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Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended		9 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 30, 2017	Apr. 01, 2017	Mar. 31, 2018	Apr. 01, 2017	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018	Sep. 30, 2017
Federal Statutory Income Tax Rates [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		35.00%
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability	$ 9	$ 994		$ 1,003
Effective Income Tax Rate Reconciliation, Tax Contingency, Domestic, Percent	(2.20%)			(79.30%)
Effective tax rate for continuing operations	25.30%		34.30%	(54.00%)	34.70%
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent	4.40%			1.90%
Unrecognized tax benefits	$ 305			$ 305					$ 316
Decrease in Unrecognized Tax Benefits is Reasonably Possible	$ 16			$ 16
Undistributed Earnings of Foreign Subsidiaries									$ 182
Scenario, Forecast [Member]
Federal Statutory Income Tax Rates [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent						21.00%	21.00%	24.50%

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Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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