Recorded Amounts and Estimated Fair Values of Long-term Debt and Derivative Financial Instruments (Detail) (USD $) In Millions, unless otherwise specified	Mar. 30, 2013	Dec. 31, 2012
Derivative [Line Items]
Total Debt	$ 2,598	$ 2,457
Carrying (Reported) Amount, Fair Value Disclosure
Derivative [Line Items]
Variable rate debt	570	428
Fixed rate debt	2,028	2,029
Total Debt	2,598	2,457
Estimate of Fair Value, Fair Value Disclosure
Derivative [Line Items]
Variable rate debt	570	428
Fixed rate debt	2,067	2,081
Total Debt	$ 2,637	$ 2,509

The portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a rate subject to change from time to time.

No definition available.

Name:	us-gaap_LongtermDebtPercentageBearingVariableInterestAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant