2.2.0.7 false Income Taxes - Additional Information (Detail) (USD $) 137 - Disclosure - Income Taxes - Additional Information (Detail) true false In Millions false false 1 USD false false shares Standard http://www.xbrl.org/2003/instance shares 0 pure Standard http://www.xbrl.org/2003/instance pure 0 iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 iso4217_USD_per_shares Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares 0 $ false 2 USD false false iso4217_USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 iso4217_USD_per_shares Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares 0 shares Standard http://www.xbrl.org/2003/instance shares 0 $ 5 Gross unrecognized tax benefits 3 us-gaap_UnrecognizedTaxBenefits us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 true true false false 879000000 879 false false false 2 true true false false 971000000 971 false false false xbrli:monetaryItemType monetary The gross amount of unrecognized tax benefits (tax reductions recognized in financial reports but excluded from tax returns) pertaining to uncertain tax positions taken in tax returns as of the beginning balance sheet date, excluding amounts pertaining to examined tax returns. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph a false 6 Unrecognized tax benefits that would affect the effective tax rate 3 us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 346000000 346 false false false 2 false true false false 307000000 307 false false false xbrli:monetaryItemType monetary The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph b false 7 Unrecognized tax benefits, gross interest and penalties accrued 3 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued us-gaap true credit instant No definition available. false false false false false false false false false false false false 1 false true false false 217000000 217 false false false 2 false true false false 291000000 291 false false false xbrli:monetaryItemType monetary This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph c Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 15, 16 false 8 Reduction in gross unrecognized tax benefit in connection with the settlement 3 us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease us-gaap true na duration No definition available. false false false false false false false false false false false false 1 false true false false 100000000 100 false false false 2 false false false false 0 0 false false false xbrli:monetaryItemType monetary The net amount of all increases and decreases in unrecognized tax benefits for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph a false 9 Tax benefit recognized in connection with the settlement 3 us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions us-gaap true debit duration No definition available. false false false false false false false false false false false false 1 true true false false 52000000 52 false false false 2 false false false false 0 0 false false false xbrli:monetaryItemType monetary Reflects the effects of adjustments of previously recorded tax expense, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, IRS tax settlement and unusual repatriation of foreign earnings. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 10A, 10B, 10C Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 10 -Subparagraph b false 2 5 false Millions UnKnown UnKnown false true