Income Taxes (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Operating Loss Carryforwards [Line Items]
Effective income tax rate	25.20%	20.60%	22.60%
Excess Tax Benefit From Share Based Compensation	$ 36
Venezuela Deconsolidation Loss Amount	(72)	$ 0	$ 0
Non-cash gain from deconsolidation	0	49	0
Amount Recognized in Income Due to Inflationary Accounting		112
Accumulated foreign earnings considered permanently reinvested	1,900	2,000	2,200
Deferred taxes related to foreign earnings not considered indefinitely reinvested			1
Unremitted foreign earnings			23
Tax benefits of carryforwards	119	55
Valuation allowance	113	45
Income taxes paid	$ 256	337	414
U.S percentage of tax provision	80.00%
Unrecognized tax benefits classified as current liabilities	$ 16
Projected additions to unrecognized tax benefits related to ongoing intercompany pricing activity	6
Unrecognized tax benefits that would affect the Company's effective tax rate in future periods	42
Income Tax Examination, Interest Expense	2	3	3
Accrued tax-related interest and penalties	$ 19	17	$ 20
U.S. Snacks | Selling, General and Administrative Expenses | Variable Interest Entity, Primary Beneficiary [Member]
Operating Loss Carryforwards [Line Items]
Non-cash gain from deconsolidation		$ 67