Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
Dec. 31, 2014 apportionment_issue	Dec. 31, 2013	Dec. 28, 2012
Income Taxes [Line Items]
Tax benefits (costs) from share-based compensation	$ 89,000,000	$ 66,000,000	$ 76,000,000
Tax credits included in provision for income taxes	4,000,000us-gaap_IncomeTaxCreditsAndAdjustments	3,000,000us-gaap_IncomeTaxCreditsAndAdjustments	3,000,000us-gaap_IncomeTaxCreditsAndAdjustments
Tax provision (benefit) applicable to other comprehensive income	5,000,000	2,000,000	5,000,000
Cumulative unremitted earnings of subsidiaries	894,000,000
Change in unrecognized tax benefits	(24,000,000)	5,000,000	(10,000,000)
Unrecognized tax benefits that, if recognized, would impact the effective tax rate	7,000,000	12,000,000	13,000,000
State apportionment issues resolved during the next 12 months	2
Tax credits subject to expiration	28,000,000
Tax credits not subject to expiration	153,000,000
Net operating loss benefits	10,000,000	14,000,000
Net operating losses	1,200,000,000us-gaap_OperatingLossCarryforwards
Net operating losses subject to expiration	561,000,000
Net cash payments (receipts) for income tax (refunds)	172,000,000us-gaap_IncomeTaxesPaidNet	77,000,000us-gaap_IncomeTaxesPaidNet	(17,000,000)us-gaap_IncomeTaxesPaidNet
International Issue Relating to Financing Activity and US Federal Tax Issue
Income Taxes [Line Items]
Change in unrecognized tax benefits, amount of unrecorded benefit	$ 4,000,000

Deferred Tax Assets, Tax Credit Carryforwards, Not Subject To Expiration

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Deferred Tax Assets, Tax Credit Carryforwards, Subject To Expiration

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements or realized from the exercise of stock options and the conversion of similar instruments during the annual period recognized in income during the period.

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Number of State Apportionment Issues, Expected To Resolve Within The Next Twelve Months

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The sum of domestic, foreign and state and local operating loss carryforwards used to reduce taxable income under enacted tax laws.

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Undistributed Earnings Of Foreign Subsidiaries Reinvested Indefinitely

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are subject to expiration dates.

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A credit or adjustment for government or taxing authority authorized decrease in taxes owed as a result of meeting certain tax policy conditions.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Amount of tax expense (benefit) allocated to other comprehensive income (loss) attributable to parent entity.

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The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

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The net amount of all increases and decreases in unrecognized tax benefits for the period.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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