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false false 0 0 true false false 9 false false false false 0 0 true false false 10 false false false false 0 0 true false false xbrli:stringItemType string No definition available. false 6 Service cost 4 us-gaap_DefinedBenefitPlanServiceCost us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 true true false false 1000000 1 true false false 2 true true false false 1000000 1 true false false 3 true true false false 8000000 8 true false false 4 true true false false 12000000 12 true false false 5 true true false false 0 0 true false false 6 true true false false 1000000 1 true false false 7 true true false false 1000000 1 true false false 8 true true false false 3000000 3 true false false 9 true true false false 7000000 7 true false false 10 true true false false 14000000 14 true false false xbrli:monetaryItemType monetary The actuarial present value of benefits attributed by the pension benefit 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The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph a, h false 7 Interest cost 4 us-gaap_DefinedBenefitPlanInterestCost us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 3000000 3 true false false 2 false true false false 5000000 5 true false false 3 false true false false 27000000 27 true false false 4 false true false false 41000000 41 true false false 5 false true false false 2000000 2 true false false 6 false true false false 3000000 3 true false false 7 false true false false 7000000 7 true false false 8 false true false false 12000000 12 true false false 9 false true false false 25000000 25 true false false 10 false true false false 51000000 51 true false false xbrli:monetaryItemType monetary The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph a, h false 8 Expected return on plan assets 4 us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false true false false -27000000 -27 true false false 4 false true false false -40000000 -40 true false false 5 false false false false 0 0 true false false 6 false false false false 0 0 true false false 7 false false false false 0 0 true false false 8 false true false false -14000000 -14 true false false 9 false true false false -26000000 -26 true false false 10 false true false false -53000000 -53 true false false xbrli:monetaryItemType monetary An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets. 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