v3.25.0.1
Consolidated Statements of Cash Flows - GAS - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Operating Activities:      
Consolidated net income $ 4,260 $ 3,849 $ 3,428
Adjustments to reconcile consolidated net income to net cash provided from operating activities —      
Depreciation and amortization, total 5,266 4,986 4,064
Deferred income taxes 536 63 670
Natural gas cost under recovery – long-term 0 0 207
Other, net (39) (138) 226
Changes in certain current assets and liabilities —      
-Receivables (372) 482 (771)
-Natural gas cost under recovery 0 108 158
-Other current assets (47) (106) (186)
-Accounts payable 492 (863) 1,021
-Other current liabilities 145 191 153
Net cash provided from operating activities 9,788 7,553 6,302
Investing Activities:      
Property additions (8,955) (9,095) (7,923)
Cost of removal, net of salvage (632) (592) (649)
Change in construction payables, net 106 18 203
Proceeds from dispositions 369 164 275
Other investing activities (164) (43) (133)
Net cash used for investing activities (9,400) (9,668) (8,430)
Financing Activities:      
Increase (decrease) in notes payable, net   973  
Increase (decrease) in notes payable, net (648)   (337)
Proceeds —      
Short-term borrowings 700 350 2,650
Redemptions and repurchases —      
Short-term borrowings (1,020) (1,630) (1,150)
Payment of common stock dividends (2,954) (3,035) (2,907)
Other financing activities (181) (139) (145)
Net cash provided from (used for) financing activities (208) 999 2,336
Net Change in Cash, Cash Equivalents, and Restricted Cash 180 (1,116) 208
Cash, Cash Equivalents, and Restricted Cash at Beginning of Year 921 2,037 1,829
Cash, Cash Equivalents, and Restricted Cash at End of Year 1,101 921 2,037
Cash paid during the period for —      
Interest, net of amounts capitalized 2,538 2,184 1,758
Income taxes, net 176 132 146
Noncash transactions — Accrued property additions at year-end 1,199 1,027 1,024
Southern Company Gas      
Operating Activities:      
Consolidated net income 740 615 572
Adjustments to reconcile consolidated net income to net cash provided from operating activities —      
Depreciation and amortization, total 643 582 558
Deferred income taxes 132 126 17
Impairment charges 0 0 131
Natural gas cost under recovery – long-term 0 0 207
Estimated loss on regulatory disallowance 0 (96) 0
Other, net 3 (74) (24)
Changes in certain current assets and liabilities —      
-Receivables 28 431 (345)
-Natural gas for sale, net of temporary LIFO liquidation 32 19 (77)
-Prepaid income taxes 63 (11) 19
-Natural gas cost under recovery 0 108 158
-Other current assets (52) (17) (6)
-Accounts payable (6) (276) 299
-Natural gas cost over recovery (21) 214 0
-Other current liabilities (10) (51) 10
Net cash provided from operating activities 1,552 1,762 1,519
Investing Activities:      
Property additions (1,541) (1,561) (1,533)
Cost of removal, net of salvage (88) (104) (112)
Change in construction payables, net (19) (38) 65
Investments in unconsolidated subsidiaries (82) (11) (165)
Proceeds from dispositions 3 42 150
Other investing activities 16 16 15
Net cash used for investing activities (1,711) (1,656) (1,580)
Financing Activities:      
Increase (decrease) in notes payable, net 40    
Increase (decrease) in notes payable, net   (153) (341)
Proceeds —      
Senior notes 450 500 500
First mortgage bonds 275 275 175
Short-term borrowings 0 0 50
Other long-term debt 8 37 22
Redemptions and repurchases —      
First mortgage bonds 0 (50) 0
Short-term borrowings 0 (200) (150)
Medium-term notes 0 (350) (46)
Capital contributions from parent company 16 373 406
Payment of common stock dividends (605) (585) (519)
Other financing activities (16) (1) (1)
Net cash provided from (used for) financing activities 168 (154) 96
Net Change in Cash, Cash Equivalents, and Restricted Cash 9 (48) 35
Cash, Cash Equivalents, and Restricted Cash at Beginning of Year 35 83 48
Cash, Cash Equivalents, and Restricted Cash at End of Year 44 35 83
Cash paid during the period for —      
Interest, net of amounts capitalized 329 291 258
Income taxes, net 59 91 208
Noncash transactions — Accrued property additions at year-end $ 113 $ 139 $ 177