Income Taxes (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017	Sep. 26, 2020	Sep. 29, 2018
Operating Loss Carryforwards [Line Items]
Effective income tax rate			20.20%	24.60%	13.60%
Out-of-period adjustment - increase tax expense decrease deferred tax asset			$ 39
Tax benefit from U.S. corporate tax rate reduction		$ (11)			$ (11)
Discrete tax expense related to changes in our reinvestment assertion		5
Transition tax liability on accumulated foreign earnings		94			94	$ 157		$ (16)
Tax reserves for transition tax on foreign earnings	$ 47	$ 47		$ 47	47
Pension contributions			32	28	287
Discrete tax benefit remeasurement of deferred taxes following a legal entity restructuring					44
Undistributed earnings of foreign subsidiaries			900			2,400
Amount of unrecognized deferred tax liability on undistributed earnings of foreign subsidiaries			23
Accumulated foreign earnings considered permanently reinvested						$ 2,600
Tax benefits of carryforwards	279		329	279
Valuation allowance	146		192	146
Income taxes paid	255		$ 281	537	188
U.S percentage of tax provision			60.00%
Projected additions to unrecognized tax benefits related to ongoing intercompany pricing activity			$ 4
Unrecognized tax benefits that would affect the Company's effective tax rate in future periods			56
Deferred Tax Liabilities, Gross	878		902	878
Deferred tax liabilities	$ 364		308	$ 364
Tax reserves released as a result of finalization of an IRS tax examination							$ 32
Discretionary pension contribution
Operating Loss Carryforwards [Line Items]
Pension contributions					$ 250
Current liabilities
Operating Loss Carryforwards [Line Items]
Increase in Unrecognized Tax Benefits is Reasonably Possible			$ 19