RETIREMENT BENEFITS - Fair Values of Pension Plan and Other Postretirement Benefit Plan Assets (Details) - USD ($)
$ in Millions |
Dec. 31, 2024 |
Dec. 31, 2023 |
| Liabilities: |
|
|
| Target Allocation |
100.00%
|
100.00%
|
| Actual Allocation |
100.00%
|
100.00%
|
| Pension plans |
|
|
| Assets: |
|
|
| Plan assets |
$ 14,621
|
$ 14,760
|
| Liabilities: |
|
|
| Derivatives |
(33)
|
|
| Total |
$ 14,588
|
|
| Pension plans | Equity |
|
|
| Liabilities: |
|
|
| Target Allocation |
41.00%
|
41.00%
|
| Actual Allocation |
41.00%
|
40.00%
|
| Pension plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 2,930
|
$ 2,730
|
| Pension plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 2,991
|
$ 2,999
|
| Pension plans | Fixed income |
|
|
| Liabilities: |
|
|
| Target Allocation |
30.00%
|
30.00%
|
| Actual Allocation |
31.00%
|
32.00%
|
| Pension plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
$ 1,780
|
$ 1,973
|
| Pension plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
48
|
44
|
| Pension plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
1,715
|
1,724
|
| Pension plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
792
|
777
|
| Pension plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
255
|
429
|
| Pension plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
$ 1,924
|
$ 2,053
|
| Liabilities: |
|
|
| Target Allocation |
12.00%
|
12.00%
|
| Actual Allocation |
13.00%
|
14.00%
|
| Pension plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
$ 237
|
$ 245
|
| Liabilities: |
|
|
| Target Allocation |
3.00%
|
3.00%
|
| Actual Allocation |
2.00%
|
2.00%
|
| Pension plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 1,797
|
$ 1,761
|
| Liabilities: |
|
|
| Target Allocation |
9.00%
|
9.00%
|
| Actual Allocation |
12.00%
|
12.00%
|
| Pension plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
$ 152
|
$ 25
|
| Liabilities: |
|
|
| Target Allocation |
3.00%
|
3.00%
|
| Actual Allocation |
1.00%
|
|
| Pension plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
$ 0
|
|
| Liabilities: |
|
|
| Target Allocation |
2.00%
|
2.00%
|
| Actual Allocation |
0.00%
|
|
| Other postretirement benefit plans |
|
|
| Assets: |
|
|
| Plan assets |
$ 1,139
|
$ 1,096
|
| Liabilities: |
|
|
| Derivatives |
1
|
|
| Total |
$ 1,138
|
|
| Target Allocation |
100.00%
|
100.00%
|
| Actual Allocation |
100.00%
|
100.00%
|
| Other postretirement benefit plans | Equity |
|
|
| Liabilities: |
|
|
| Target Allocation |
61.00%
|
60.00%
|
| Actual Allocation |
62.00%
|
61.00%
|
| Other postretirement benefit plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 192
|
$ 172
|
| Other postretirement benefit plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 137
|
$ 135
|
| Other postretirement benefit plans | Fixed income |
|
|
| Liabilities: |
|
|
| Target Allocation |
29.00%
|
30.00%
|
| Actual Allocation |
28.00%
|
28.00%
|
| Other postretirement benefit plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
$ 54
|
$ 57
|
| Other postretirement benefit plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
1
|
2
|
| Other postretirement benefit plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
48
|
47
|
| Other postretirement benefit plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
99
|
92
|
| Other postretirement benefit plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
16
|
23
|
| Other postretirement benefit plans | Trust-owned life insurance |
|
|
| Assets: |
|
|
| Plan assets |
478
|
456
|
| Other postretirement benefit plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
$ 54
|
$ 57
|
| Liabilities: |
|
|
| Target Allocation |
4.00%
|
4.00%
|
| Actual Allocation |
5.00%
|
6.00%
|
| Other postretirement benefit plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
$ 6
|
$ 6
|
| Liabilities: |
|
|
| Target Allocation |
1.00%
|
1.00%
|
| Actual Allocation |
1.00%
|
1.00%
|
| Other postretirement benefit plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 50
|
$ 48
|
| Liabilities: |
|
|
| Target Allocation |
3.00%
|
3.00%
|
| Actual Allocation |
4.00%
|
4.00%
|
| Other postretirement benefit plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
$ 4
|
$ 1
|
| Liabilities: |
|
|
| Target Allocation |
1.00%
|
1.00%
|
| Actual Allocation |
0.00%
|
|
| Other postretirement benefit plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
$ 0
|
|
| Liabilities: |
|
|
| Target Allocation |
1.00%
|
1.00%
|
| Actual Allocation |
0.00%
|
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans |
|
|
| Assets: |
|
|
| Plan assets |
$ 4,670
|
$ 4,646
|
| Liabilities: |
|
|
| Derivatives |
0
|
|
| Total |
4,670
|
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
2,095
|
1,959
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
1,959
|
1,947
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
255
|
371
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
361
|
369
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
0
|
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
0
|
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans |
|
|
| Assets: |
|
|
| Plan assets |
175
|
170
|
| Liabilities: |
|
|
| Derivatives |
0
|
|
| Total |
175
|
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
94
|
85
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
54
|
53
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
16
|
21
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Trust-owned life insurance |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
11
|
11
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
0
|
|
| Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
0
|
|
| Significant Other Observable Inputs (Level 2) | Pension plans |
|
|
| Assets: |
|
|
| Plan assets |
6,202
|
6,399
|
| Liabilities: |
|
|
| Derivatives |
(33)
|
|
| Total |
6,169
|
|
| Significant Other Observable Inputs (Level 2) | Pension plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
835
|
771
|
| Significant Other Observable Inputs (Level 2) | Pension plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
1,032
|
1,052
|
| Significant Other Observable Inputs (Level 2) | Pension plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
1,780
|
1,973
|
| Significant Other Observable Inputs (Level 2) | Pension plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
48
|
44
|
| Significant Other Observable Inputs (Level 2) | Pension plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
1,715
|
1,724
|
| Significant Other Observable Inputs (Level 2) | Pension plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
792
|
777
|
| Significant Other Observable Inputs (Level 2) | Pension plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
0
|
58
|
| Significant Other Observable Inputs (Level 2) | Pension plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Significant Other Observable Inputs (Level 2) | Pension plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Significant Other Observable Inputs (Level 2) | Pension plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Significant Other Observable Inputs (Level 2) | Pension plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
0
|
|
| Significant Other Observable Inputs (Level 2) | Pension plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
0
|
|
| Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans |
|
|
| Assets: |
|
|
| Plan assets |
861
|
825
|
| Liabilities: |
|
|
| Derivatives |
1
|
|
| Total |
860
|
|
| Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
98
|
87
|
| Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
83
|
82
|
| Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
54
|
57
|
| Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
1
|
2
|
| Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
48
|
47
|
| Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
99
|
92
|
| Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
0
|
2
|
| Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Trust-owned life insurance |
|
|
| Assets: |
|
|
| Plan assets |
478
|
456
|
| Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
0
|
|
| Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
0
|
|
| Net Asset Value as a Practical Expedient (NAV) | Pension plans |
|
|
| Assets: |
|
|
| Plan assets |
3,749
|
3,715
|
| Liabilities: |
|
|
| Derivatives |
0
|
|
| Total |
3,749
|
|
| Net Asset Value as a Practical Expedient (NAV) | Pension plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Net Asset Value as a Practical Expedient (NAV) | Pension plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Net Asset Value as a Practical Expedient (NAV) | Pension plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Net Asset Value as a Practical Expedient (NAV) | Pension plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Net Asset Value as a Practical Expedient (NAV) | Pension plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Net Asset Value as a Practical Expedient (NAV) | Pension plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Net Asset Value as a Practical Expedient (NAV) | Pension plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Net Asset Value as a Practical Expedient (NAV) | Pension plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
1,563
|
1,684
|
| Net Asset Value as a Practical Expedient (NAV) | Pension plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
237
|
245
|
| Net Asset Value as a Practical Expedient (NAV) | Pension plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
1,797
|
1,761
|
| Net Asset Value as a Practical Expedient (NAV) | Pension plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
152
|
25
|
| Net Asset Value as a Practical Expedient (NAV) | Pension plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
0
|
|
| Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans |
|
|
| Assets: |
|
|
| Plan assets |
103
|
101
|
| Liabilities: |
|
|
| Derivatives |
0
|
|
| Total |
103
|
|
| Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Trust-owned life insurance |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
43
|
46
|
| Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
6
|
6
|
| Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
50
|
48
|
| Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
4
|
1
|
| Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
$ 0
|
|
| Alabama Power |
|
|
| Liabilities: |
|
|
| Target Allocation |
100.00%
|
|
| Actual Allocation |
100.00%
|
|
| Alabama Power | Pension plans |
|
|
| Assets: |
|
|
| Plan assets |
$ 3,555
|
$ 3,579
|
| Liabilities: |
|
|
| Derivatives |
(8)
|
|
| Total |
$ 3,547
|
|
| Target Allocation |
100.00%
|
100.00%
|
| Actual Allocation |
100.00%
|
100.00%
|
| Alabama Power | Pension plans | Equity |
|
|
| Liabilities: |
|
|
| Target Allocation |
41.00%
|
41.00%
|
| Actual Allocation |
41.00%
|
40.00%
|
| Alabama Power | Pension plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 712
|
$ 663
|
| Alabama Power | Pension plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 727
|
$ 727
|
| Alabama Power | Pension plans | Fixed income |
|
|
| Liabilities: |
|
|
| Target Allocation |
30.00%
|
30.00%
|
| Actual Allocation |
31.00%
|
32.00%
|
| Alabama Power | Pension plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
$ 433
|
$ 479
|
| Alabama Power | Pension plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
12
|
11
|
| Alabama Power | Pension plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
417
|
418
|
| Alabama Power | Pension plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
193
|
188
|
| Alabama Power | Pension plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
62
|
104
|
| Alabama Power | Pension plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
$ 468
|
$ 497
|
| Liabilities: |
|
|
| Target Allocation |
12.00%
|
12.00%
|
| Actual Allocation |
13.00%
|
14.00%
|
| Alabama Power | Pension plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
$ 57
|
$ 59
|
| Liabilities: |
|
|
| Target Allocation |
3.00%
|
3.00%
|
| Actual Allocation |
2.00%
|
2.00%
|
| Alabama Power | Pension plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 437
|
$ 427
|
| Liabilities: |
|
|
| Target Allocation |
9.00%
|
9.00%
|
| Actual Allocation |
12.00%
|
12.00%
|
| Alabama Power | Pension plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
$ 37
|
$ 6
|
| Liabilities: |
|
|
| Target Allocation |
3.00%
|
3.00%
|
| Actual Allocation |
1.00%
|
|
| Alabama Power | Pension plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
$ 0
|
|
| Liabilities: |
|
|
| Target Allocation |
2.00%
|
2.00%
|
| Actual Allocation |
0.00%
|
|
| Alabama Power | Other postretirement benefit plans |
|
|
| Assets: |
|
|
| Plan assets |
$ 418
|
$ 402
|
| Liabilities: |
|
|
| Target Allocation |
100.00%
|
100.00%
|
| Actual Allocation |
100.00%
|
100.00%
|
| Alabama Power | Other postretirement benefit plans | Equity |
|
|
| Liabilities: |
|
|
| Target Allocation |
68.00%
|
67.00%
|
| Actual Allocation |
68.00%
|
66.00%
|
| Alabama Power | Other postretirement benefit plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 24
|
$ 22
|
| Alabama Power | Other postretirement benefit plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 25
|
$ 25
|
| Alabama Power | Other postretirement benefit plans | Fixed income |
|
|
| Liabilities: |
|
|
| Target Allocation |
23.00%
|
23.00%
|
| Actual Allocation |
24.00%
|
23.00%
|
| Alabama Power | Other postretirement benefit plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
$ 14
|
$ 16
|
| Alabama Power | Other postretirement benefit plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
14
|
14
|
| Alabama Power | Other postretirement benefit plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
11
|
8
|
| Alabama Power | Other postretirement benefit plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
2
|
3
|
| Alabama Power | Other postretirement benefit plans | Trust-owned life insurance |
|
|
| Assets: |
|
|
| Plan assets |
294
|
280
|
| Alabama Power | Other postretirement benefit plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
$ 16
|
$ 17
|
| Liabilities: |
|
|
| Target Allocation |
3.00%
|
4.00%
|
| Actual Allocation |
4.00%
|
6.00%
|
| Alabama Power | Other postretirement benefit plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
$ 2
|
$ 2
|
| Liabilities: |
|
|
| Target Allocation |
1.00%
|
1.00%
|
| Actual Allocation |
1.00%
|
1.00%
|
| Alabama Power | Other postretirement benefit plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 15
|
$ 15
|
| Liabilities: |
|
|
| Target Allocation |
3.00%
|
3.00%
|
| Actual Allocation |
3.00%
|
4.00%
|
| Alabama Power | Other postretirement benefit plans | Private Credit |
|
|
| Liabilities: |
|
|
| Target Allocation |
|
1.00%
|
| Alabama Power | Other postretirement benefit plans | Infrastructure |
|
|
| Liabilities: |
|
|
| Target Allocation |
|
1.00%
|
| Alabama Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans |
|
|
| Assets: |
|
|
| Plan assets |
$ 1,135
|
$ 1,127
|
| Liabilities: |
|
|
| Derivatives |
0
|
|
| Total |
1,135
|
|
| Alabama Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
509
|
476
|
| Alabama Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
476
|
472
|
| Alabama Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
62
|
90
|
| Alabama Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
88
|
89
|
| Alabama Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
0
|
|
| Alabama Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
0
|
|
| Alabama Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans |
|
|
| Assets: |
|
|
| Plan assets |
38
|
38
|
| Alabama Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
17
|
16
|
| Alabama Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
16
|
16
|
| Alabama Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
2
|
3
|
| Alabama Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Trust-owned life insurance |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
3
|
3
|
| Alabama Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Significant Other Observable Inputs (Level 2) | Pension plans |
|
|
| Assets: |
|
|
| Plan assets |
1,509
|
1,552
|
| Liabilities: |
|
|
| Derivatives |
(8)
|
|
| Total |
1,501
|
|
| Alabama Power | Significant Other Observable Inputs (Level 2) | Pension plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
203
|
187
|
| Alabama Power | Significant Other Observable Inputs (Level 2) | Pension plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
251
|
255
|
| Alabama Power | Significant Other Observable Inputs (Level 2) | Pension plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
433
|
479
|
| Alabama Power | Significant Other Observable Inputs (Level 2) | Pension plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
12
|
11
|
| Alabama Power | Significant Other Observable Inputs (Level 2) | Pension plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
417
|
418
|
| Alabama Power | Significant Other Observable Inputs (Level 2) | Pension plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
193
|
188
|
| Alabama Power | Significant Other Observable Inputs (Level 2) | Pension plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
0
|
14
|
| Alabama Power | Significant Other Observable Inputs (Level 2) | Pension plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Significant Other Observable Inputs (Level 2) | Pension plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Significant Other Observable Inputs (Level 2) | Pension plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Significant Other Observable Inputs (Level 2) | Pension plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
0
|
|
| Alabama Power | Significant Other Observable Inputs (Level 2) | Pension plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
0
|
|
| Alabama Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans |
|
|
| Assets: |
|
|
| Plan assets |
349
|
333
|
| Alabama Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
7
|
6
|
| Alabama Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
9
|
9
|
| Alabama Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
14
|
16
|
| Alabama Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
14
|
14
|
| Alabama Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
11
|
8
|
| Alabama Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Trust-owned life insurance |
|
|
| Assets: |
|
|
| Plan assets |
294
|
280
|
| Alabama Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans |
|
|
| Assets: |
|
|
| Plan assets |
911
|
900
|
| Liabilities: |
|
|
| Derivatives |
0
|
|
| Total |
911
|
|
| Alabama Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
380
|
408
|
| Alabama Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
57
|
59
|
| Alabama Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
437
|
427
|
| Alabama Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
37
|
6
|
| Alabama Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
0
|
|
| Alabama Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans |
|
|
| Assets: |
|
|
| Plan assets |
31
|
31
|
| Alabama Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Trust-owned life insurance |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Alabama Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
13
|
14
|
| Alabama Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
2
|
2
|
| Alabama Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 15
|
$ 15
|
| Georgia Power |
|
|
| Liabilities: |
|
|
| Target Allocation |
100.00%
|
100.00%
|
| Actual Allocation |
100.00%
|
100.00%
|
| Georgia Power | Pension plans |
|
|
| Assets: |
|
|
| Plan assets |
$ 4,538
|
$ 4,615
|
| Liabilities: |
|
|
| Derivatives |
(10)
|
|
| Total |
$ 4,528
|
|
| Target Allocation |
100.00%
|
|
| Actual Allocation |
100.00%
|
|
| Georgia Power | Pension plans | Equity |
|
|
| Liabilities: |
|
|
| Target Allocation |
41.00%
|
41.00%
|
| Actual Allocation |
41.00%
|
40.00%
|
| Georgia Power | Pension plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 911
|
$ 852
|
| Georgia Power | Pension plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 928
|
$ 938
|
| Georgia Power | Pension plans | Fixed income |
|
|
| Liabilities: |
|
|
| Target Allocation |
30.00%
|
30.00%
|
| Actual Allocation |
31.00%
|
32.00%
|
| Georgia Power | Pension plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
$ 552
|
$ 617
|
| Georgia Power | Pension plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
15
|
14
|
| Georgia Power | Pension plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
532
|
539
|
| Georgia Power | Pension plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
246
|
243
|
| Georgia Power | Pension plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
79
|
134
|
| Georgia Power | Pension plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
$ 597
|
$ 642
|
| Liabilities: |
|
|
| Target Allocation |
12.00%
|
12.00%
|
| Actual Allocation |
13.00%
|
14.00%
|
| Georgia Power | Pension plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
$ 73
|
$ 77
|
| Liabilities: |
|
|
| Target Allocation |
3.00%
|
3.00%
|
| Actual Allocation |
2.00%
|
2.00%
|
| Georgia Power | Pension plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 558
|
$ 551
|
| Liabilities: |
|
|
| Target Allocation |
9.00%
|
9.00%
|
| Actual Allocation |
12.00%
|
12.00%
|
| Georgia Power | Pension plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
$ 47
|
$ 8
|
| Liabilities: |
|
|
| Target Allocation |
3.00%
|
3.00%
|
| Actual Allocation |
1.00%
|
0.00%
|
| Georgia Power | Pension plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
$ 0
|
$ 0
|
| Liabilities: |
|
|
| Target Allocation |
2.00%
|
2.00%
|
| Actual Allocation |
0.00%
|
0.00%
|
| Georgia Power | Other postretirement benefit plans |
|
|
| Assets: |
|
|
| Plan assets |
$ 420
|
$ 409
|
| Liabilities: |
|
|
| Target Allocation |
100.00%
|
100.00%
|
| Actual Allocation |
100.00%
|
100.00%
|
| Georgia Power | Other postretirement benefit plans | Equity |
|
|
| Liabilities: |
|
|
| Target Allocation |
59.00%
|
58.00%
|
| Actual Allocation |
59.00%
|
57.00%
|
| Georgia Power | Other postretirement benefit plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 59
|
$ 53
|
| Georgia Power | Other postretirement benefit plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 57
|
$ 56
|
| Georgia Power | Other postretirement benefit plans | Fixed income |
|
|
| Liabilities: |
|
|
| Target Allocation |
35.00%
|
35.00%
|
| Actual Allocation |
33.00%
|
35.00%
|
| Georgia Power | Other postretirement benefit plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
$ 14
|
$ 16
|
| Georgia Power | Other postretirement benefit plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
14
|
14
|
| Georgia Power | Other postretirement benefit plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
48
|
47
|
| Georgia Power | Other postretirement benefit plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
10
|
13
|
| Georgia Power | Other postretirement benefit plans | Trust-owned life insurance |
|
|
| Assets: |
|
|
| Plan assets |
184
|
176
|
| Georgia Power | Other postretirement benefit plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
$ 17
|
$ 18
|
| Liabilities: |
|
|
| Target Allocation |
3.00%
|
3.00%
|
| Actual Allocation |
4.00%
|
4.00%
|
| Georgia Power | Other postretirement benefit plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
$ 2
|
$ 2
|
| Liabilities: |
|
|
| Target Allocation |
1.00%
|
1.00%
|
| Actual Allocation |
1.00%
|
1.00%
|
| Georgia Power | Other postretirement benefit plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 15
|
$ 14
|
| Liabilities: |
|
|
| Target Allocation |
2.00%
|
2.00%
|
| Actual Allocation |
3.00%
|
3.00%
|
| Georgia Power | Other postretirement benefit plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
|
$ 0
|
| Liabilities: |
|
|
| Target Allocation |
|
1.00%
|
| Actual Allocation |
|
0.00%
|
| Georgia Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans |
|
|
| Assets: |
|
|
| Plan assets |
$ 1,451
|
$ 1,451
|
| Liabilities: |
|
|
| Derivatives |
0
|
|
| Total |
1,451
|
|
| Georgia Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
652
|
611
|
| Georgia Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
608
|
609
|
| Georgia Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
79
|
116
|
| Georgia Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
112
|
115
|
| Georgia Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans |
|
|
| Assets: |
|
|
| Plan assets |
82
|
80
|
| Georgia Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
52
|
47
|
| Georgia Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
16
|
16
|
| Georgia Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
10
|
13
|
| Georgia Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Trust-owned life insurance |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
4
|
4
|
| Georgia Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
|
0
|
| Georgia Power | Significant Other Observable Inputs (Level 2) | Pension plans |
|
|
| Assets: |
|
|
| Plan assets |
1,924
|
2,001
|
| Liabilities: |
|
|
| Derivatives |
(10)
|
|
| Total |
1,914
|
|
| Georgia Power | Significant Other Observable Inputs (Level 2) | Pension plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
259
|
241
|
| Georgia Power | Significant Other Observable Inputs (Level 2) | Pension plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
320
|
329
|
| Georgia Power | Significant Other Observable Inputs (Level 2) | Pension plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
552
|
617
|
| Georgia Power | Significant Other Observable Inputs (Level 2) | Pension plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
15
|
14
|
| Georgia Power | Significant Other Observable Inputs (Level 2) | Pension plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
532
|
539
|
| Georgia Power | Significant Other Observable Inputs (Level 2) | Pension plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
246
|
243
|
| Georgia Power | Significant Other Observable Inputs (Level 2) | Pension plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
0
|
18
|
| Georgia Power | Significant Other Observable Inputs (Level 2) | Pension plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Significant Other Observable Inputs (Level 2) | Pension plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Significant Other Observable Inputs (Level 2) | Pension plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Significant Other Observable Inputs (Level 2) | Pension plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Significant Other Observable Inputs (Level 2) | Pension plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans |
|
|
| Assets: |
|
|
| Plan assets |
308
|
299
|
| Georgia Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
7
|
6
|
| Georgia Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
41
|
40
|
| Georgia Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
14
|
16
|
| Georgia Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
14
|
14
|
| Georgia Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
48
|
47
|
| Georgia Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Trust-owned life insurance |
|
|
| Assets: |
|
|
| Plan assets |
184
|
176
|
| Georgia Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
|
0
|
| Georgia Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans |
|
|
| Assets: |
|
|
| Plan assets |
1,163
|
1,163
|
| Liabilities: |
|
|
| Derivatives |
0
|
|
| Total |
1,163
|
|
| Georgia Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
485
|
527
|
| Georgia Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
73
|
77
|
| Georgia Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
558
|
551
|
| Georgia Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
47
|
8
|
| Georgia Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans |
|
|
| Assets: |
|
|
| Plan assets |
30
|
30
|
| Georgia Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Trust-owned life insurance |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Georgia Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
13
|
14
|
| Georgia Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
2
|
2
|
| Georgia Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 15
|
14
|
| Georgia Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
|
0
|
| Mississippi Power |
|
|
| Liabilities: |
|
|
| Target Allocation |
100.00%
|
|
| Actual Allocation |
100.00%
|
|
| Mississippi Power | Pension plans |
|
|
| Assets: |
|
|
| Plan assets |
$ 667
|
$ 675
|
| Liabilities: |
|
|
| Derivatives |
(2)
|
|
| Total |
$ 665
|
|
| Target Allocation |
100.00%
|
100.00%
|
| Actual Allocation |
100.00%
|
100.00%
|
| Mississippi Power | Pension plans | Equity |
|
|
| Liabilities: |
|
|
| Target Allocation |
41.00%
|
41.00%
|
| Actual Allocation |
41.00%
|
40.00%
|
| Mississippi Power | Pension plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 135
|
$ 124
|
| Mississippi Power | Pension plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 136
|
$ 137
|
| Mississippi Power | Pension plans | Fixed income |
|
|
| Liabilities: |
|
|
| Target Allocation |
30.00%
|
30.00%
|
| Actual Allocation |
31.00%
|
32.00%
|
| Mississippi Power | Pension plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
$ 81
|
$ 90
|
| Mississippi Power | Pension plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
2
|
2
|
| Mississippi Power | Pension plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
78
|
79
|
| Mississippi Power | Pension plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
36
|
36
|
| Mississippi Power | Pension plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
12
|
20
|
| Mississippi Power | Pension plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
$ 87
|
$ 94
|
| Liabilities: |
|
|
| Target Allocation |
12.00%
|
12.00%
|
| Actual Allocation |
13.00%
|
14.00%
|
| Mississippi Power | Pension plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
$ 11
|
$ 11
|
| Liabilities: |
|
|
| Target Allocation |
3.00%
|
3.00%
|
| Actual Allocation |
2.00%
|
2.00%
|
| Mississippi Power | Pension plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 82
|
$ 81
|
| Liabilities: |
|
|
| Target Allocation |
9.00%
|
9.00%
|
| Actual Allocation |
12.00%
|
12.00%
|
| Mississippi Power | Pension plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
$ 7
|
$ 1
|
| Liabilities: |
|
|
| Target Allocation |
3.00%
|
3.00%
|
| Actual Allocation |
1.00%
|
0.00%
|
| Mississippi Power | Pension plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
$ 0
|
$ 0
|
| Liabilities: |
|
|
| Target Allocation |
2.00%
|
2.00%
|
| Actual Allocation |
0.00%
|
0.00%
|
| Mississippi Power | Other postretirement benefit plans |
|
|
| Assets: |
|
|
| Plan assets |
$ 23
|
$ 24
|
| Liabilities: |
|
|
| Target Allocation |
100.00%
|
100.00%
|
| Actual Allocation |
100.00%
|
100.00%
|
| Mississippi Power | Other postretirement benefit plans | Equity |
|
|
| Liabilities: |
|
|
| Target Allocation |
34.00%
|
34.00%
|
| Actual Allocation |
32.00%
|
33.00%
|
| Mississippi Power | Other postretirement benefit plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 4
|
$ 4
|
| Mississippi Power | Other postretirement benefit plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 4
|
$ 4
|
| Mississippi Power | Other postretirement benefit plans | Fixed income |
|
|
| Liabilities: |
|
|
| Target Allocation |
43.00%
|
43.00%
|
| Actual Allocation |
44.00%
|
44.00%
|
| Mississippi Power | Other postretirement benefit plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
$ 7
|
$ 7
|
| Mississippi Power | Other postretirement benefit plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
2
|
2
|
| Mississippi Power | Other postretirement benefit plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
1
|
1
|
| Mississippi Power | Other postretirement benefit plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
1
|
1
|
| Mississippi Power | Other postretirement benefit plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
$ 2
|
$ 3
|
| Liabilities: |
|
|
| Target Allocation |
10.00%
|
10.00%
|
| Actual Allocation |
11.00%
|
11.00%
|
| Mississippi Power | Other postretirement benefit plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
$ 0
|
$ 0
|
| Liabilities: |
|
|
| Target Allocation |
2.00%
|
2.00%
|
| Actual Allocation |
2.00%
|
2.00%
|
| Mississippi Power | Other postretirement benefit plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 2
|
$ 2
|
| Liabilities: |
|
|
| Target Allocation |
7.00%
|
7.00%
|
| Actual Allocation |
10.00%
|
10.00%
|
| Mississippi Power | Other postretirement benefit plans | Private Credit |
|
|
| Liabilities: |
|
|
| Target Allocation |
|
3.00%
|
| Mississippi Power | Other postretirement benefit plans | Infrastructure |
|
|
| Liabilities: |
|
|
| Target Allocation |
|
1.00%
|
| Mississippi Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans |
|
|
| Assets: |
|
|
| Plan assets |
$ 214
|
$ 212
|
| Liabilities: |
|
|
| Derivatives |
0
|
|
| Total |
214
|
|
| Mississippi Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
97
|
89
|
| Mississippi Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
89
|
89
|
| Mississippi Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
12
|
17
|
| Mississippi Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
16
|
17
|
| Mississippi Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans |
|
|
| Assets: |
|
|
| Plan assets |
7
|
8
|
| Mississippi Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
3
|
3
|
| Mississippi Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
3
|
3
|
| Mississippi Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
1
|
1
|
| Mississippi Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
0
|
1
|
| Mississippi Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Significant Other Observable Inputs (Level 2) | Pension plans |
|
|
| Assets: |
|
|
| Plan assets |
282
|
293
|
| Liabilities: |
|
|
| Derivatives |
(2)
|
|
| Total |
280
|
|
| Mississippi Power | Significant Other Observable Inputs (Level 2) | Pension plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
38
|
35
|
| Mississippi Power | Significant Other Observable Inputs (Level 2) | Pension plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
47
|
48
|
| Mississippi Power | Significant Other Observable Inputs (Level 2) | Pension plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
81
|
90
|
| Mississippi Power | Significant Other Observable Inputs (Level 2) | Pension plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
2
|
2
|
| Mississippi Power | Significant Other Observable Inputs (Level 2) | Pension plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
78
|
79
|
| Mississippi Power | Significant Other Observable Inputs (Level 2) | Pension plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
36
|
36
|
| Mississippi Power | Significant Other Observable Inputs (Level 2) | Pension plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
0
|
3
|
| Mississippi Power | Significant Other Observable Inputs (Level 2) | Pension plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Significant Other Observable Inputs (Level 2) | Pension plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Significant Other Observable Inputs (Level 2) | Pension plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Significant Other Observable Inputs (Level 2) | Pension plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Significant Other Observable Inputs (Level 2) | Pension plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans |
|
|
| Assets: |
|
|
| Plan assets |
12
|
12
|
| Mississippi Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
1
|
1
|
| Mississippi Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
1
|
1
|
| Mississippi Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
7
|
7
|
| Mississippi Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
2
|
2
|
| Mississippi Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
1
|
1
|
| Mississippi Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans |
|
|
| Assets: |
|
|
| Plan assets |
171
|
170
|
| Liabilities: |
|
|
| Derivatives |
0
|
|
| Total |
171
|
|
| Mississippi Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
71
|
77
|
| Mississippi Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
11
|
11
|
| Mississippi Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
82
|
81
|
| Mississippi Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
7
|
1
|
| Mississippi Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans |
|
|
| Assets: |
|
|
| Plan assets |
4
|
4
|
| Mississippi Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
2
|
2
|
| Mississippi Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Mississippi Power | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
2
|
2
|
| Southern Power | Pension plans |
|
|
| Assets: |
|
|
| Plan assets |
$ 188
|
$ 187
|
| Liabilities: |
|
|
| Target Allocation |
100.00%
|
100.00%
|
| Actual Allocation |
100.00%
|
100.00%
|
| Southern Power | Pension plans | Equity |
|
|
| Liabilities: |
|
|
| Target Allocation |
41.00%
|
41.00%
|
| Actual Allocation |
41.00%
|
40.00%
|
| Southern Power | Pension plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 38
|
$ 34
|
| Southern Power | Pension plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 38
|
$ 38
|
| Southern Power | Pension plans | Fixed income |
|
|
| Liabilities: |
|
|
| Target Allocation |
30.00%
|
30.00%
|
| Actual Allocation |
31.00%
|
32.00%
|
| Southern Power | Pension plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
$ 23
|
$ 25
|
| Southern Power | Pension plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
1
|
1
|
| Southern Power | Pension plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
22
|
22
|
| Southern Power | Pension plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
10
|
10
|
| Southern Power | Pension plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
3
|
6
|
| Southern Power | Pension plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
$ 25
|
$ 26
|
| Liabilities: |
|
|
| Target Allocation |
12.00%
|
12.00%
|
| Actual Allocation |
13.00%
|
14.00%
|
| Southern Power | Pension plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
$ 3
|
$ 3
|
| Liabilities: |
|
|
| Target Allocation |
3.00%
|
3.00%
|
| Actual Allocation |
2.00%
|
2.00%
|
| Southern Power | Pension plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 23
|
$ 22
|
| Liabilities: |
|
|
| Target Allocation |
9.00%
|
9.00%
|
| Actual Allocation |
12.00%
|
12.00%
|
| Southern Power | Pension plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
$ 2
|
$ 0
|
| Liabilities: |
|
|
| Target Allocation |
3.00%
|
3.00%
|
| Actual Allocation |
1.00%
|
0.00%
|
| Southern Power | Pension plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
$ 0
|
$ 0
|
| Liabilities: |
|
|
| Target Allocation |
2.00%
|
2.00%
|
| Actual Allocation |
0.00%
|
0.00%
|
| Southern Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans |
|
|
| Assets: |
|
|
| Plan assets |
$ 60
|
$ 59
|
| Southern Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
27
|
24
|
| Southern Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
25
|
25
|
| Southern Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
3
|
5
|
| Southern Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
5
|
5
|
| Southern Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Power | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Power | Significant Other Observable Inputs (Level 2) | Pension plans |
|
|
| Assets: |
|
|
| Plan assets |
80
|
82
|
| Southern Power | Significant Other Observable Inputs (Level 2) | Pension plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
11
|
10
|
| Southern Power | Significant Other Observable Inputs (Level 2) | Pension plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
13
|
13
|
| Southern Power | Significant Other Observable Inputs (Level 2) | Pension plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
23
|
25
|
| Southern Power | Significant Other Observable Inputs (Level 2) | Pension plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
1
|
1
|
| Southern Power | Significant Other Observable Inputs (Level 2) | Pension plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
22
|
22
|
| Southern Power | Significant Other Observable Inputs (Level 2) | Pension plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
10
|
10
|
| Southern Power | Significant Other Observable Inputs (Level 2) | Pension plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
0
|
1
|
| Southern Power | Significant Other Observable Inputs (Level 2) | Pension plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Power | Significant Other Observable Inputs (Level 2) | Pension plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Power | Significant Other Observable Inputs (Level 2) | Pension plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Power | Significant Other Observable Inputs (Level 2) | Pension plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Power | Significant Other Observable Inputs (Level 2) | Pension plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans |
|
|
| Assets: |
|
|
| Plan assets |
48
|
46
|
| Southern Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
20
|
21
|
| Southern Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
3
|
3
|
| Southern Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
23
|
22
|
| Southern Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
2
|
0
|
| Southern Power | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Pension plans |
|
|
| Assets: |
|
|
| Plan assets |
$ 983
|
$ 989
|
| Liabilities: |
|
|
| Target Allocation |
100.00%
|
100.00%
|
| Actual Allocation |
100.00%
|
100.00%
|
| Southern Company Gas | Pension plans | Equity |
|
|
| Liabilities: |
|
|
| Target Allocation |
41.00%
|
41.00%
|
| Actual Allocation |
41.00%
|
40.00%
|
| Southern Company Gas | Pension plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 198
|
$ 182
|
| Southern Company Gas | Pension plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 201
|
$ 201
|
| Southern Company Gas | Pension plans | Fixed income |
|
|
| Liabilities: |
|
|
| Target Allocation |
30.00%
|
30.00%
|
| Actual Allocation |
31.00%
|
32.00%
|
| Southern Company Gas | Pension plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
$ 120
|
$ 132
|
| Southern Company Gas | Pension plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
3
|
3
|
| Southern Company Gas | Pension plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
115
|
116
|
| Southern Company Gas | Pension plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
53
|
52
|
| Southern Company Gas | Pension plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
17
|
29
|
| Southern Company Gas | Pension plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
$ 129
|
$ 138
|
| Liabilities: |
|
|
| Target Allocation |
12.00%
|
12.00%
|
| Actual Allocation |
13.00%
|
14.00%
|
| Southern Company Gas | Pension plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
$ 16
|
$ 16
|
| Liabilities: |
|
|
| Target Allocation |
3.00%
|
3.00%
|
| Actual Allocation |
2.00%
|
2.00%
|
| Southern Company Gas | Pension plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 121
|
$ 118
|
| Liabilities: |
|
|
| Target Allocation |
9.00%
|
9.00%
|
| Actual Allocation |
12.00%
|
12.00%
|
| Southern Company Gas | Pension plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
$ 10
|
$ 2
|
| Liabilities: |
|
|
| Target Allocation |
3.00%
|
3.00%
|
| Actual Allocation |
1.00%
|
|
| Southern Company Gas | Pension plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
$ 0
|
|
| Liabilities: |
|
|
| Target Allocation |
2.00%
|
2.00%
|
| Actual Allocation |
0.00%
|
|
| Southern Company Gas | Other postretirement benefit plans |
|
|
| Assets: |
|
|
| Plan assets |
$ 138
|
$ 127
|
| Liabilities: |
|
|
| Target Allocation |
100.00%
|
100.00%
|
| Actual Allocation |
100.00%
|
100.00%
|
| Southern Company Gas | Other postretirement benefit plans | Equity |
|
|
| Liabilities: |
|
|
| Target Allocation |
72.00%
|
72.00%
|
| Actual Allocation |
73.00%
|
72.00%
|
| Southern Company Gas | Other postretirement benefit plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 77
|
$ 69
|
| Southern Company Gas | Other postretirement benefit plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 24
|
$ 24
|
| Southern Company Gas | Other postretirement benefit plans | Fixed income |
|
|
| Liabilities: |
|
|
| Target Allocation |
26.00%
|
26.00%
|
| Actual Allocation |
25.00%
|
26.00%
|
| Southern Company Gas | Other postretirement benefit plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
$ 1
|
$ 1
|
| Southern Company Gas | Other postretirement benefit plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
1
|
1
|
| Southern Company Gas | Other postretirement benefit plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
32
|
29
|
| Southern Company Gas | Other postretirement benefit plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
1
|
1
|
| Southern Company Gas | Other postretirement benefit plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
$ 1
|
$ 1
|
| Liabilities: |
|
|
| Target Allocation |
1.00%
|
1.00%
|
| Actual Allocation |
1.00%
|
1.00%
|
| Southern Company Gas | Other postretirement benefit plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 1
|
$ 1
|
| Liabilities: |
|
|
| Target Allocation |
1.00%
|
1.00%
|
| Actual Allocation |
1.00%
|
1.00%
|
| Southern Company Gas | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans |
|
|
| Assets: |
|
|
| Plan assets |
$ 315
|
$ 310
|
| Southern Company Gas | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
142
|
130
|
| Southern Company Gas | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
132
|
130
|
| Southern Company Gas | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
17
|
25
|
| Southern Company Gas | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
24
|
25
|
| Southern Company Gas | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
0
|
|
| Southern Company Gas | Quoted Prices in Active Markets for Identical Assets (Level 1) | Pension plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
0
|
|
| Southern Company Gas | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans |
|
|
| Assets: |
|
|
| Plan assets |
3
|
5
|
| Southern Company Gas | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
1
|
2
|
| Southern Company Gas | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
1
|
2
|
| Southern Company Gas | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
1
|
1
|
| Southern Company Gas | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other postretirement benefit plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Significant Other Observable Inputs (Level 2) | Pension plans |
|
|
| Assets: |
|
|
| Plan assets |
416
|
430
|
| Southern Company Gas | Significant Other Observable Inputs (Level 2) | Pension plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
56
|
52
|
| Southern Company Gas | Significant Other Observable Inputs (Level 2) | Pension plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
69
|
71
|
| Southern Company Gas | Significant Other Observable Inputs (Level 2) | Pension plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
120
|
132
|
| Southern Company Gas | Significant Other Observable Inputs (Level 2) | Pension plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
3
|
3
|
| Southern Company Gas | Significant Other Observable Inputs (Level 2) | Pension plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
115
|
116
|
| Southern Company Gas | Significant Other Observable Inputs (Level 2) | Pension plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
53
|
52
|
| Southern Company Gas | Significant Other Observable Inputs (Level 2) | Pension plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
0
|
4
|
| Southern Company Gas | Significant Other Observable Inputs (Level 2) | Pension plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Significant Other Observable Inputs (Level 2) | Pension plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Significant Other Observable Inputs (Level 2) | Pension plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Significant Other Observable Inputs (Level 2) | Pension plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
0
|
|
| Southern Company Gas | Significant Other Observable Inputs (Level 2) | Pension plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
0
|
|
| Southern Company Gas | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans |
|
|
| Assets: |
|
|
| Plan assets |
133
|
120
|
| Southern Company Gas | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
76
|
67
|
| Southern Company Gas | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
23
|
22
|
| Southern Company Gas | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
1
|
1
|
| Southern Company Gas | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
1
|
1
|
| Southern Company Gas | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
32
|
29
|
| Southern Company Gas | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Significant Other Observable Inputs (Level 2) | Other postretirement benefit plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Net Asset Value as a Practical Expedient (NAV) | Pension plans |
|
|
| Assets: |
|
|
| Plan assets |
252
|
249
|
| Southern Company Gas | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Net Asset Value as a Practical Expedient (NAV) | Pension plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Net Asset Value as a Practical Expedient (NAV) | Pension plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Mortgage- and asset-backed securities |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
105
|
113
|
| Southern Company Gas | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Special situations |
|
|
| Assets: |
|
|
| Plan assets |
16
|
16
|
| Southern Company Gas | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
121
|
118
|
| Southern Company Gas | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Private Credit |
|
|
| Assets: |
|
|
| Plan assets |
10
|
2
|
| Southern Company Gas | Net Asset Value as a Practical Expedient (NAV) | Pension plans | Infrastructure |
|
|
| Assets: |
|
|
| Plan assets |
0
|
|
| Southern Company Gas | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans |
|
|
| Assets: |
|
|
| Plan assets |
2
|
2
|
| Southern Company Gas | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Domestic equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | International equity |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | U.S. Treasury, government, and agency bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Corporate bonds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Pooled funds |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Cash equivalents and other |
|
|
| Assets: |
|
|
| Plan assets |
0
|
0
|
| Southern Company Gas | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Real estate investments |
|
|
| Assets: |
|
|
| Plan assets |
1
|
1
|
| Southern Company Gas | Net Asset Value as a Practical Expedient (NAV) | Other postretirement benefit plans | Private equity |
|
|
| Assets: |
|
|
| Plan assets |
$ 1
|
$ 1
|