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Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Mar. 30, 2019	Mar. 31, 2018	Sep. 29, 2018
Income Tax Disclosure [Abstract]
Effective tax rate for continuing operations	18.50%	25.30%	20.90%	(54.00%)
Effective Income Tax Rate Reconciliation, Tax Contingency, Domestic, Percent		(2.20%)		(79.30%)
Unrecognized tax benefits	$ 303		$ 303		$ 308
Decrease in Unrecognized Tax Benefits is Reasonably Possible	$ 60		$ 60

X

- Definition

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 the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in domestic income tax contingency.

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Amount of unrecognized tax benefits.

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