1.0.0.3 false STATEMENTS OF CONSOLIDATED COMPREHENSIVE INCOME (USD $) In Millions false 1 $ false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 u002 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 false 2 $ false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 u002 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 false 3 $ false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 u002 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 2 Statement of Income and Comprehensive Income [Abstract] 0 us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 3 Net Income 1 us-gaap_NetIncomeLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 true true 372000000 372 false false 2 true true 446000000 446 false false 3 true true 395000000 395 false false No definition available. No authoritative reference available. false 4 Other comprehensive income (loss): 1 us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 5 Adjustment to pension and other postretirement plans (net of tax of $28, $32 and $2) 2 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false true 7000000 7 false false 2 false true -79000000 -79 false false 3 false true 34000000 34 false false No definition available. No authoritative reference available. false 6 Net deferred gain (loss) from cash flow hedges (net of tax of $6, $2 and $-0-) 2 us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 0 0 false false 2 false true -4000000 -4 false false 3 false true 11000000 11 false false No definition available. No authoritative reference available. false 7 Reclassification of deferred gain from cash flow hedges realized in net income (net of tax of $14, $2 and $-0-) 2 us-gaap_OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 0 0 false false 2 false true -4000000 -4 false false 3 false true -20000000 -20 false false No definition available. No authoritative reference available. false 8 Other comprehensive income (loss) 2 us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 7000000 7 false false 2 false true -87000000 -87 false false 3 false true 25000000 25 false false No definition available. No authoritative reference available. true 9 Comprehensive income 1 us-gaap_ComprehensiveIncomeNetOfTax us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 true true 379000000 379 false false 2 true true 359000000 359 false false 3 true true 420000000 420 false false No definition available. No authoritative reference available. true false 3 8 false Millions UnKnown UnKnown false true