The (Provision for) Benefit from Income Taxes (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 28, 2012
Income Tax Disclosure [Abstract]
Federal, Current	$ (224)us-gaap_CurrentFederalTaxExpenseBenefit	$ (139)us-gaap_CurrentFederalTaxExpenseBenefit	$ 6us-gaap_CurrentFederalTaxExpenseBenefit
State, Current	(43)	(17)	(8)
Non-U.S., Current	(47)us-gaap_CurrentForeignTaxExpenseBenefit	(44)us-gaap_CurrentForeignTaxExpenseBenefit	(34)us-gaap_CurrentForeignTaxExpenseBenefit
Current Income Tax Expense (Benefit)	(314)us-gaap_CurrentIncomeTaxExpenseBenefit	(200)us-gaap_CurrentIncomeTaxExpenseBenefit	(36)us-gaap_CurrentIncomeTaxExpenseBenefit
Federal, Deferred	(21)	(68)	(211)
State, Deferred	(5)	(10)	(30)
Non-U.S., Deferred	5	7	(1)
Deferred Income Tax Expense (Benefit)	(21)us-gaap_DeferredIncomeTaxExpenseBenefit	(71)us-gaap_DeferredIncomeTaxExpenseBenefit	(242)us-gaap_DeferredIncomeTaxExpenseBenefit
(Provision) benefit for income taxes	$ (335)us-gaap_IncomeTaxExpenseBenefit	$ (271)us-gaap_IncomeTaxExpenseBenefit	$ (278)us-gaap_IncomeTaxExpenseBenefit

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

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Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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