Goodwill and Other Intangible Assets (Intangible Assets Subject to Amortization) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Jan. 01, 2011
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 60		$ 60
Accumulated amortization	49		47
Amortization expense	2	[1]	2	[1]
Estimated aggregate annual amortization expense for fiscal year 2012	2	[1]
Estimated aggregate annual amortization expense for fiscal year 2013	2	[1]
Estimated aggregate annual amortization expense for fiscal year 2014	2	[1]
Estimated aggregate annual amortization expense for fiscal year 2015	2	[1]
Estimated aggregate annual amortization expense for fiscal year 2016	2	[1]
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	19		19
Accumulated amortization	17		16
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	41		41
Accumulated amortization	$ 32		$ 31

[1] The currently estimated aggregate amortization expense for each of the next five succeeding fiscal periods is approximately $2 million per year.