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Pension and Other Employee Benefits (Schedule of Fair Value Measurements of the Company's Pension Plan Assets By Asset Category And By Level) (Details) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
|
Dec. 31, 2011
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Dec. 31, 2010
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|---|---|---|---|
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Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | $ 1,169 | $ 752 | $ 627 |
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Domestic Pension Plan [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 16,733 | 14,931 | |
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Domestic Pension Plan [Member] | Level 1 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 6,575 | 6,772 | |
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Domestic Pension Plan [Member] | Level 2 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 8,989 | 7,407 | |
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Domestic Pension Plan [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 1,169 | 752 | |
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US Equities [Member] | Domestic Pension Plan [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 4,626 | 4,590 | |
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US Equities [Member] | Domestic Pension Plan [Member] | Level 1 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 1,817 | 2,804 | |
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US Equities [Member] | Domestic Pension Plan [Member] | Level 2 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 2,809 | 1,786 | |
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US Equities [Member] | Domestic Pension Plan [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Developed [Member] | Domestic Pension Plan [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 2,350 | 1,860 | |
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Developed [Member] | Domestic Pension Plan [Member] | Level 1 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 1,834 | 1,520 | |
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Developed [Member] | Domestic Pension Plan [Member] | Level 2 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 516 | 340 | |
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Developed [Member] | Domestic Pension Plan [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Emerging [Member] | Domestic Pension Plan [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 658 | 471 | |
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Emerging [Member] | Domestic Pension Plan [Member] | Level 1 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 553 | 410 | |
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Emerging [Member] | Domestic Pension Plan [Member] | Level 2 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 105 | 61 | |
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Emerging [Member] | Domestic Pension Plan [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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US Government Agencies Debt Securities [Member] | Domestic Pension Plan [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 69 | 540 | |
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US Government Agencies Debt Securities [Member] | Domestic Pension Plan [Member] | Level 1 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 69 | 525 | |
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US Government Agencies Debt Securities [Member] | Domestic Pension Plan [Member] | Level 2 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 15 | |
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US Government Agencies Debt Securities [Member] | Domestic Pension Plan [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Investment grade bonds [Member] | Domestic Pension Plan [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 1,989 | 1,515 | |
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Investment grade bonds [Member] | Domestic Pension Plan [Member] | Level 1 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 69 | |
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Investment grade bonds [Member] | Domestic Pension Plan [Member] | Level 2 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 1,989 | 1,446 | |
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Investment grade bonds [Member] | Domestic Pension Plan [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Non-Investment Grade Bonds [Member] | Domestic Pension Plan [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 336 | 458 | |
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Non-Investment Grade Bonds [Member] | Domestic Pension Plan [Member] | Level 1 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Non-Investment Grade Bonds [Member] | Domestic Pension Plan [Member] | Level 2 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 336 | 458 | |
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Non-Investment Grade Bonds [Member] | Domestic Pension Plan [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Foreign Government Debt Securities [Member] | Domestic Pension Plan [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 181 | 112 | |
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Foreign Government Debt Securities [Member] | Domestic Pension Plan [Member] | Level 1 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 181 | 0 | |
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Foreign Government Debt Securities [Member] | Domestic Pension Plan [Member] | Level 2 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 112 | |
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Foreign Government Debt Securities [Member] | Domestic Pension Plan [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Core Fixed Income [Member] | Domestic Pension Plan [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 1,519 | 890 | |
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Core Fixed Income [Member] | Domestic Pension Plan [Member] | Level 1 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 1,281 | 619 | |
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Core Fixed Income [Member] | Domestic Pension Plan [Member] | Level 2 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 238 | 271 | |
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Core Fixed Income [Member] | Domestic Pension Plan [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Global multi sector fixed income investments [Member] | Domestic Pension Plan [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 202 | 341 | |
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Global multi sector fixed income investments [Member] | Domestic Pension Plan [Member] | Level 1 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 139 | |
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Global multi sector fixed income investments [Member] | Domestic Pension Plan [Member] | Level 2 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 202 | 202 | |
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Global multi sector fixed income investments [Member] | Domestic Pension Plan [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Fixed Income Funds [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 67 | 53 | 53 |
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Fixed Income Funds [Member] | Domestic Pension Plan [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 297 | 502 | |
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Fixed Income Funds [Member] | Domestic Pension Plan [Member] | Level 1 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Fixed Income Funds [Member] | Domestic Pension Plan [Member] | Level 2 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 230 | 449 | |
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Fixed Income Funds [Member] | Domestic Pension Plan [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 67 | 53 | |
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Securitized fixed income securities [Member] | Domestic Pension Plan [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 480 | 307 | |
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Securitized fixed income securities [Member] | Domestic Pension Plan [Member] | Level 1 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Securitized fixed income securities [Member] | Domestic Pension Plan [Member] | Level 2 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 480 | 307 | |
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Securitized fixed income securities [Member] | Domestic Pension Plan [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Cash and Cash Equivalents [Member] | Domestic Pension Plan [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 868 | 1,093 | |
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Cash and Cash Equivalents [Member] | Domestic Pension Plan [Member] | Level 1 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 333 | 485 | |
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Cash and Cash Equivalents [Member] | Domestic Pension Plan [Member] | Level 2 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 535 | 608 | |
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Cash and Cash Equivalents [Member] | Domestic Pension Plan [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Relative Value [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 23 | 0 |
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Relative Value [Member] | Domestic Pension Plan [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 358 | 306 | |
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Relative Value [Member] | Domestic Pension Plan [Member] | Level 1 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Relative Value [Member] | Domestic Pension Plan [Member] | Level 2 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 358 | 283 | |
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Relative Value [Member] | Domestic Pension Plan [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 23 | |
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Hedge Funds, Event Driven [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 72 | 57 | 39 |
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Hedge Funds, Event Driven [Member] | Domestic Pension Plan [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 203 | 275 | |
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Hedge Funds, Event Driven [Member] | Domestic Pension Plan [Member] | Level 1 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Hedge Funds, Event Driven [Member] | Domestic Pension Plan [Member] | Level 2 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 131 | 218 | |
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Hedge Funds, Event Driven [Member] | Domestic Pension Plan [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 72 | 57 | |
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Hedge Funds, Equity [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 5 | 0 | 22 |
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Hedge Funds, Equity [Member] | Domestic Pension Plan [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 118 | 151 | |
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Hedge Funds, Equity [Member] | Domestic Pension Plan [Member] | Level 1 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Hedge Funds, Equity [Member] | Domestic Pension Plan [Member] | Level 2 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 113 | 151 | |
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Hedge Funds, Equity [Member] | Domestic Pension Plan [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 5 | 0 | |
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Hedge Funds, Global Opportunity [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 103 | 22 | 21 |
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Hedge Funds, Global Opportunity [Member] | Domestic Pension Plan [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 1,065 | 785 | |
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Hedge Funds, Global Opportunity [Member] | Domestic Pension Plan [Member] | Level 1 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Hedge Funds, Global Opportunity [Member] | Domestic Pension Plan [Member] | Level 2 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 962 | 763 | |
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Hedge Funds, Global Opportunity [Member] | Domestic Pension Plan [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 103 | 22 | |
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Multi Strategy Funds [Member] | Domestic Pension Plan [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 501 | 193 | |
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Multi Strategy Funds [Member] | Domestic Pension Plan [Member] | Level 1 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 501 | 193 | |
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Multi Strategy Funds [Member] | Domestic Pension Plan [Member] | Level 2 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Multi Strategy Funds [Member] | Domestic Pension Plan [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Private Equity Funds [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 406 | 301 | 252 |
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Private Equity Funds [Member] | Domestic Pension Plan [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 406 | 301 | |
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Private Equity Funds [Member] | Domestic Pension Plan [Member] | Level 1 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Private Equity Funds [Member] | Domestic Pension Plan [Member] | Level 2 [Member]
|
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Private Equity Funds [Member] | Domestic Pension Plan [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 406 | 301 | |
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Private Real Estate Funds [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 299 | 182 | 156 |
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Private Real Estate Funds [Member] | Domestic Pension Plan [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 299 | 182 | |
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Private Real Estate Funds [Member] | Domestic Pension Plan [Member] | Level 1 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Private Real Estate Funds [Member] | Domestic Pension Plan [Member] | Level 2 [Member]
|
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Private Real Estate Funds [Member] | Domestic Pension Plan [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 299 | 182 | |
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Insurance Contracts [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 25 | 25 | 23 |
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Insurance Contracts [Member] | Domestic Pension Plan [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 25 | 25 | |
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Insurance Contracts [Member] | Domestic Pension Plan [Member] | Level 1 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Insurance Contracts [Member] | Domestic Pension Plan [Member] | Level 2 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Insurance Contracts [Member] | Domestic Pension Plan [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 25 | 25 | |
|
Cash collateral for borrowed securities [Member] | Domestic Pension Plan [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | (15) | (63) | |
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Cash collateral for borrowed securities [Member] | Domestic Pension Plan [Member] | Level 1 [Member]
|
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Cash collateral for borrowed securities [Member] | Domestic Pension Plan [Member] | Level 2 [Member]
|
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| Defined Benefit Plan, Fair Value of Plan Assets | (15) | (63) | |
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Cash collateral for borrowed securities [Member] | Domestic Pension Plan [Member] | Level 3 [Member]
|
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Other Funds [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 192 | 89 | 61 |
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Other Funds [Member] | Domestic Pension Plan [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 198 | 97 | |
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Other Funds [Member] | Domestic Pension Plan [Member] | Level 1 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | 6 | 8 | |
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Other Funds [Member] | Domestic Pension Plan [Member] | Level 2 [Member]
|
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| Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
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Other Funds [Member] | Domestic Pension Plan [Member] | Level 3 [Member]
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| Defined Benefit Plan, Fair Value of Plan Assets | $ 192 | $ 89 |