Income Taxes (Income Tax Expense) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 28, 2012	Dec. 30, 2011	Dec. 31, 2010
Earnings From Continuing Operations [Abstract]
Earnings from continuing operations before income taxes	$ 2,964	$ 2,888	$ 2,546
Current [Abstract]
Federal	447	353	451
State	66	104	58
Total Current	513	457	509
Deferred [Abstract]
Federal	530	614	372
State	62	(5)	102
Total Deferred	592	609	474
Income Tax Expense (Benefit)	$ 1,105	$ 1,066	$ 983