Other Income - Net (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 28, 2012	Dec. 30, 2011	Dec. 31, 2010
Component of Other Income, Nonoperating [Line Items]
Total Other Income - Net	$ 73	$ 22	$ 32
Gross Revenue from Real Estate	106	51	54
Interest Income [Member]
Component of Other Income, Nonoperating [Line Items]
Total Other Income - Net	5	5	6
Income from Real Estate Operations [Member]
Component of Other Income, Nonoperating [Line Items]
Total Other Income - Net	81	25	30
Miscellaneous Expense [Member]
Component of Other Income, Nonoperating [Line Items]
Total Other Income - Net	$ (13)	$ (8)	$ (4)