Share-Based Compensation Share-Based Compensation (Narrative) (Details) shares in Millions, $ in Millions	12 Months Ended
	Dec. 30, 2017 USD ($) option / rsu shares		Dec. 31, 2016 USD ($)	Dec. 26, 2015 USD ($)
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Common stock, capital shares reserved for future issuance | shares	74
Allocated Share-based Compensation Expense	$ 292		$ 284	$ 295
Allocated Share-Based Compensation Liability Awards	13		5	0
Restructuring, Settlement and Impairment Provisions, Share-based Compensation	(2)		5	4
Allocated Share-based Compensation Expense, After Merger/Integration and Restructuring/Impairment	303		294	299
Income tax benefits recognized in earnings related to share-based compensation	89	[1]	$ 91	$ 77
Unrecognized compensation cost related to nonvested share-based compensation grants	$ 314
Weighted-average period for recognizing unrecognized compensation	2 years
Acquisition-related awards remaining vesting period	3 years
Percent of liability awards granted to senior officers	34.00%			40.00%
PEPunit
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Acquisition-related awards remaining vesting period	3 years
Restricted Stock Units (RSUs)
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Award equivalence, ratio of stock options to RSUs | option / rsu	4
Stock Options
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Stock option exercisable life	10 years
Award equivalence, ratio of stock options to RSUs | option / rsu	1
PEP Equity Performance Unit [Member]
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Percent of equity awards granted to Senior Officers as performance-based RSUs	66.00%			60.00%

[1] Reflects tax rates effective for the 2017 tax year.