Leases and Other Commitments (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010
Leases [Abstract]
Rent expense on all operating leases	$ 166	$ 154	$ 150
Operating leases, 2012	150
Operating leases, 2013	123
Operating leases, 2014	93
Operating leases, 2015	69
Operating leases, 2016	59
Operating leases, 2017 and beyond	95
Operating leases, total minimum payments	589
Capital leases, 2012	1
Capital leases, 2013	1
Capital leases, 2014	1
Capital leases, 2015	1
Capital leases, 2016	0
Capital leases, 2017 and beyond	1
Capital leases, total minimum payments	5
Amount representing interest	(1)
Obligations under capital leases	4
Obligations due within one year	1
Long-term obligations under capital leases	$ 3