Stock-Based Compensation (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 28, 2013		Dec. 29, 2012	Dec. 31, 2011
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Phantom Units Granted Under Director Deferral Program, Shares Outstanding	290,000
Common stock, capital shares reserved for future issuance	110,000,000
Unrecognized compensation cost related to nonvested share-based compensation grants	$ 373
Weighted-average period for recognizing unrecognized compensation	2 years
Percent of liability awards granted to senior officers	40.00%
PEPUnit
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Award performance period	3 years
Weighted-average intrinsic value of RSUs granted	$ 68.48	[1]	$ 64.85
Percent of equity awards granted to Senior Officers as performance-based RSUs	60.00%
Restricted Stock Units (RSUs)
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Weighted-average intrinsic value of RSUs granted	$ 76.30	[1]	$ 66.64	$ 63.87
Award equivalence, ratio of stock options to RSUs	1
Percent of equity awards granted to Senior Officers as performance-based RSUs				50.00%
Stock Options
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Acquisition-related awards remaining vesting period	3 years
Stock option exercisable life	10 years
Award equivalence, ratio of stock options to RSUs	4
Percent of equity awards granted to Senior Officers as performance-based RSUs				50.00%

[1] Weighted-average intrinsic value at grant date.