Sale and Leaseback Transactions (Details) (Narrative) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012
Sale Leaseback Transaction [Line Items]
Gain (loss) on sale of property, plant and equipment	$ (48)	$ 0
Property in Austin Texas
Sale Leaseback Transaction [Line Items]
Proceeds from sale of property, plant, and equipment	164
Gain (loss) on sale of property, plant and equipment	(52)
Net book value, property, plant and equipment sold	216
Sale Leaseback Transaction, Lease Terms	The lease expires in March 2025 and provides for one 10-year optional renewal.
Property in Markham Canada
Sale Leaseback Transaction [Line Items]
Proceeds from sale of property, plant, and equipment	13
Gain (loss) on sale of property, plant and equipment	6
Net book value, property, plant and equipment sold	7
Sale Leaseback Transaction, Lease Terms	The lease expires in March 2014 and provides for one 6-month renewal option.
Sale Leaseback Transactions
Sale Leaseback Transaction [Line Items]
Gain (loss) on sale of property, plant and equipment	$ (46)