|
Employee Benefits, Balances of Pension Plan And Other Benefits Plan Assets Measured at Fair Value (Details) (USD $)
In Millions, unless otherwise specified
|
Dec. 31, 2011
|
Dec. 31, 2010
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Fair value of plan assets at end of year |
$ 9,061 |
$ 9,639 |
|
Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
646 |
711 |
| Payable upon return of securities loaned |
(5) |
(5) |
| Net receivables (payables) |
(1) |
(9) |
| Fair value of plan assets at end of year |
640 |
697 |
|
Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
9,229 |
10,065 |
| Payable upon return of securities loaned |
(145) |
(145) |
| Net receivables (payables) |
(23) |
(281) |
| Fair value of plan assets at end of year |
9,061 |
9,639 |
|
Level 1 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
285 |
345 |
|
Level 1 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
3,101 |
3,835 |
|
Level 2 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
314 |
318 |
|
Level 2 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
5,336 |
5,383 |
|
Level 3 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
47 |
48 |
|
Level 3 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
792 |
847 |
|
Cash and cash equivalents [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
213 |
254 |
|
Cash and cash equivalents [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
432 |
535 |
|
Cash and cash equivalents [Member] | Level 1 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
180 |
220 |
|
Cash and cash equivalents [Member] | Level 1 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
47 |
|
Cash and cash equivalents [Member] | Level 2 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
33 |
34 |
|
Cash and cash equivalents [Member] | Level 2 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
432 |
488 |
|
Cash and cash equivalents [Member] | Level 3 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
Cash and cash equivalents [Member] | Level 3 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
Long duration fixed income [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
87 |
|
|
Long duration fixed income [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
2,606 |
|
|
Long duration fixed income [Member] | Level 1 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
13 |
|
|
Long duration fixed income [Member] | Level 1 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
376 |
|
|
Long duration fixed income [Member] | Level 2 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
74 |
|
|
Long duration fixed income [Member] | Level 2 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
2,229 |
|
|
Long duration fixed income [Member] | Level 3 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
|
|
Long duration fixed income [Member] | Level 3 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
1 |
|
|
Intermediate (core) fixed income [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
64 |
119 |
|
Intermediate (core) fixed income [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
474 |
2,271 |
|
Intermediate (core) fixed income [Member] | Level 1 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
4 |
10 |
|
Intermediate (core) fixed income [Member] | Level 1 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
88 |
297 |
|
Intermediate (core) fixed income [Member] | Level 2 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
60 |
109 |
|
Intermediate (core) fixed income [Member] | Level 2 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
380 |
1,964 |
|
Intermediate (core) fixed income [Member] | Level 3 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
Intermediate (core) fixed income [Member] | Level 3 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
6 |
10 |
|
High-yield fixed income [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
12 |
14 |
|
High-yield fixed income [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
377 |
408 |
|
High-yield fixed income [Member] | Level 1 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
High-yield fixed income [Member] | Level 1 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
10 |
1 |
|
High-yield fixed income [Member] | Level 2 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
12 |
14 |
|
High-yield fixed income [Member] | Level 2 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
366 |
406 |
|
High-yield fixed income [Member] | Level 3 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
High-yield fixed income [Member] | Level 3 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
1 |
1 |
|
International fixed income [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
11 |
8 |
|
International fixed income [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
331 |
263 |
|
International fixed income [Member] | Level 1 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
5 |
0 |
|
International fixed income [Member] | Level 1 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
147 |
0 |
|
International fixed income [Member] | Level 2 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
6 |
8 |
|
International fixed income [Member] | Level 2 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
184 |
263 |
|
International fixed income [Member] | Level 3 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
International fixed income [Member] | Level 3 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
Specialty fixed income [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
|
3 |
|
Specialty fixed income [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
|
95 |
|
Specialty fixed income [Member] | Level 1 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
|
0 |
|
Specialty fixed income [Member] | Level 1 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
|
0 |
|
Specialty fixed income [Member] | Level 2 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
|
3 |
|
Specialty fixed income [Member] | Level 2 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
|
95 |
|
Specialty fixed income [Member] | Level 3 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
|
0 |
|
Specialty fixed income [Member] | Level 3 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
|
0 |
|
Domestic large-cap stocks [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
70 |
83 |
|
Domestic large-cap stocks [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
1,765 |
2,194 |
|
Domestic large-cap stocks [Member] | Level 1 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
39 |
43 |
|
Domestic large-cap stocks [Member] | Level 1 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
1,163 |
1,323 |
|
Domestic large-cap stocks [Member] | Level 2 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
31 |
40 |
|
Domestic large-cap stocks [Member] | Level 2 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
600 |
867 |
|
Domestic large-cap stocks [Member] | Level 3 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
Domestic large-cap stocks [Member] | Level 3 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
2 |
4 |
|
Domestic mid-cap stocks [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
33 |
29 |
|
Domestic mid-cap stocks [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
547 |
392 |
|
Domestic mid-cap stocks [Member] | Level 1 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
12 |
9 |
|
Domestic mid-cap stocks [Member] | Level 1 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
364 |
263 |
|
Domestic mid-cap stocks [Member] | Level 2 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
21 |
20 |
|
Domestic mid-cap stocks [Member] | Level 2 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
183 |
129 |
|
Domestic mid-cap stocks [Member] | Level 3 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
Domestic mid-cap stocks [Member] | Level 3 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
Domestic small-cap stocks [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
26 |
48 |
|
Domestic small-cap stocks [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
291 |
888 |
|
Domestic small-cap stocks [Member] | Level 1 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
9 |
28 |
|
Domestic small-cap stocks [Member] | Level 1 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
281 |
851 |
|
Domestic small-cap stocks [Member] | Level 2 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
17 |
20 |
|
Domestic small-cap stocks [Member] | Level 2 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
10 |
37 |
|
Domestic small-cap stocks [Member] | Level 3 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
Domestic small-cap stocks [Member] | Level 3 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
International stocks [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
59 |
77 |
|
International stocks [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
920 |
1,357 |
|
International stocks [Member] | Level 1 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
19 |
31 |
|
International stocks [Member] | Level 1 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
570 |
948 |
|
International stocks [Member] | Level 2 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
40 |
46 |
|
International stocks [Member] | Level 2 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
349 |
403 |
|
International stocks [Member] | Level 3 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
International stocks [Member] | Level 3 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
1 |
6 |
|
Emerging market stocks [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
19 |
23 |
|
Emerging market stocks [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
574 |
700 |
|
Emerging market stocks [Member] | Level 1 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
Emerging market stocks [Member] | Level 1 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
Emerging market stocks [Member] | Level 2 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
19 |
23 |
|
Emerging market stocks [Member] | Level 2 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
574 |
700 |
|
Emerging market stocks [Member] | Level 3 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
Emerging market stocks [Member] | Level 3 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
Real estate/timber[Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
15 |
15 |
|
Real estate/timber[Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
457 |
465 |
|
Real estate/timber[Member] | Level 1 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
3 |
3 |
|
Real estate/timber[Member] | Level 1 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
102 |
105 |
|
Real estate/timber[Member] | Level 2 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
Real estate/timber[Member] | Level 2 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
Real estate/timber[Member] | Level 3 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
12 |
12 |
|
Real estate/timber[Member] | Level 3 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
355 |
360 |
|
Multi-strategy hedge funds [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
8 |
10 |
|
Multi-strategy hedge funds [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
251 |
313 |
|
Multi-strategy hedge funds [Member] | Level 1 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
Multi-strategy hedge funds [Member] | Level 1 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
Multi-strategy hedge funds [Member] | Level 2 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
Multi-strategy hedge funds [Member] | Level 2 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
Multi-strategy hedge funds [Member] | Level 3 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
8 |
10 |
|
Multi-strategy hedge funds [Member] | Level 3 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
251 |
313 |
|
Private equity [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
4 |
4 |
|
Private equity [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
129 |
112 |
|
Private equity [Member] | Level 1 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
Private equity [Member] | Level 1 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
Private equity [Member] | Level 2 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
Private equity [Member] | Level 2 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
Private equity [Member] | Level 3 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
4 |
4 |
|
Private equity [Member] | Level 3 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
129 |
112 |
|
Other [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
25 |
24 |
|
Other [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
75 |
72 |
|
Other [Member] | Level 1 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
1 |
1 |
|
Other [Member] | Level 1 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
0 |
0 |
|
Other [Member] | Level 2 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
1 |
1 |
|
Other [Member] | Level 2 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
29 |
31 |
|
Other [Member] | Level 3 [Member] | Other benefits plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
23 |
22 |
|
Other [Member] | Level 3 [Member] | Pension plan assets [Member]
|
|
|
| Balances of Pension Plan And Other Benefits Plan Assets Measured At Fair Value [Abstract] |
|
|
| Total plan investments |
$ 46 |
$ 41 |