Income Taxes (Change In Valuation Allowance Against Deferred Tax Assets) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Income Taxes [Abstract]
Balance at beginning of year	$ 46	$ 36	$ 28
Additions charged to income tax expense	12	12	11
Reductions credited to income tax expense	0	(1)	(2)
Currency translation adjustments	1	(1)	(1)
Balance at end of year	$ 59	$ 46	$ 36