Equity - Reclassification of AOCI (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012		Jun. 29, 2013	Jun. 30, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified from AOCI into income	$ (2)			$ (2)
Tax (expense) benefit	0	(2)		0	(3)
Net of tax	(2)	3		(2)	6
Postretirement and Postemployment Benefits Reclassification To Net Income Pre Tax [Abstract]
Net experience loss, pre-tax	1	1	[1]	3	2	[1]
Prior service cost, pre-tax	3	3	[1]	6	7	[1]
Total before tax	4			9
Postretirement and Postemployment Benefits Reclassification To Net Income After Tax [Abstract]
Tax (expense) benefit	(1)			(2)
Net of tax	3			7
Total reclassifications for the quarter, net of tax	1			5
Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified from AOCI into income	2	(5)		2	(9)
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	(3)			(5)
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)			(2)
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	$ 2			$ 5

[1] Amounts have been revised as discussed in Note 2 and Note 7 to the financial statements.