Income Taxes Income Tax (Details) - USD ($) $ in Millions		3 Months Ended		12 Months Ended
	Jan. 01, 2018	Dec. 29, 2018	Dec. 30, 2017	Sep. 29, 2018
Income Tax [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%	21.00%		24.50%
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount			$ 400
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount			$ 2,200
Unrecognized Tax Benefits, Period Increase (Decrease)		$ 100
Unrecognized Tax Benefits		$ 700		$ 600
Cash and Cash Equivalents
Income Tax [Line Items]
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Percent		15.50%
Residual Earnings
Income Tax [Line Items]
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Percent		8.00%
Scenario, Plan
Income Tax [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		24.50%
Minimum | Scenario, Plan
Income Tax [Line Items]
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Percent		13.00%
Maximum | Scenario, Plan
Income Tax [Line Items]
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Percent		16.00%
Accounting Standards Update 2016-16
Income Tax [Line Items]
Adoption of new accounting guidance		$ 100