Equity - Reclassification of AOCI (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Tax (expense) benefit	$ 0	$ (1)
Net of tax	0	3
Postretirement and Postemployment Benefits Reclassification To Net Income Pre Tax [Abstract]
Net experience loss, pre-tax	2	1
Prior service cost, pre-tax	3	4
Total before tax	5
Postretirement and Postemployment Benefits Reclassification To Net Income After Tax [Abstract]
Tax (expense) benefit	(1)
Net of tax	4
Total reclassifications for the quarter, net of tax	4
Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified from AOCI into income	0	(4)
Tax (expense) benefit	0
Net of tax	0
Cash Flow Hedging [Member] | Foreign Currency Exchange Contracts [Member] | Cost of Goods Sold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified from AOCI into income	2
Cash Flow Hedging [Member] | Interest Rate Contracts [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified from AOCI into income	1
Cash Flow Hedging [Member] | Commodity Contracts [Member] | Cost of Goods Sold [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified from AOCI into income	$ (3)