Income Taxes (Income Tax Expense) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013	Dec. 28, 2012		Dec. 30, 2011
Earnings From Continuing Operations [Abstract]
Earnings Before Income Taxes	$ 2,922	$ 2,971	[1]	$ 2,940	[1]
Current [Abstract]
Federal	671	450	[1]	370	[1]
State	87	66	[1]	107	[1]
Total Current	758	516	[1]	477	[1]
Deferred [Abstract]
Federal	285	530	[1]	614	[1]
State	15	62	[1]	(5)	[1]
Subtotal Deferred	300	592	[1]	609	[1]
Income Tax Expense (Benefit)	$ 1,058	$ 1,108	[1]	$ 1,086	[1]

[1] See the revision of prior period financial statements in Note 1. Nature of Operations and Significant Accounting Policies.