Income Taxes Deferred tax assets and deferred tax liabilities (Details) - USD ($) $ in Millions	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Deferred Income Tax [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	$ 0	$ 0
Deferred Tax Liabilities Us State Income Taxes	6	19
Deferred Tax Assets Advertising And Promotion Related	11	11
Deferred Tax Assets Wages And Payroll Taxes	15	20
Deferred Tax Assets, Inventory	17	14
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits	143	132
Tax benefits of carryforwards	279	270
Deferred Tax Assets, Hedging Transactions	9	10
Deferred Tax Liabilities, Hedging Transactions	0	0
Deferred Tax Liabilities, Property, Plant and Equipment	217	220
Deferred Tax Liabilities, Intangible Assets	526	613
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation	19	20
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	29	31
Deferred Tax Assets, Other	9	26
Deferred Tax Assets, Gross	531	534
Deferred Tax Liabilities, Gross	749	852
Deferred Tax Liabilities, Net	(364)	(484)
Deferred Tax Assets, Valuation Allowance	(146)	(166)	$ (153)	$ (131)
Deferred Tax Assets, Net of Valuation Allowance	385	368
Other Assets [Member]
Deferred Income Tax [Line Items]
Deferred Tax Assets, Net	231	246
Other liabilities
Deferred Income Tax [Line Items]
Deferred Tax Liabilities, Net	$ (595)	$ (730)