Our Significant Accounting Policies (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Dec. 26, 2015
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets		$ 639,000,000
Capitalized Computer Software, Net	$ 686,000,000	791,000,000
Capitalized Computer Software, Amortization	224,000,000	214,000,000	$ 202,000,000
Shipping and handling expenses	9,900,000,000	9,700,000,000	9,400,000,000
Research and development costs	737,000,000	760,000,000	754,000,000
Amount of prepaid incentive arrangements	262,000,000	291,000,000
Advertising and other marketing activities	4,100,000,000	4,200,000,000	3,900,000,000
Advertising expenses	2,400,000,000	2,500,000,000	$ 2,400,000,000
Deferred advertising costs	46,000,000	32,000,000
Earnings per Share [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 0.08	$ 0.07