Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jul. 01, 2018	Sep. 30, 2018
Income Tax Contingency [Line Items]
Net income tax benefit for provisional remeasurement of certain deferred taxes and related amounts	$ (82)
Provisional of income tax expense for estimated effects of transition tax, net of adjustments related to uncertain tax positions	233
Forecast [Member]
Income Tax Contingency [Line Items]
Corporate income tax blended rate		24.50%
Other Long-Term Liabilities [Member]
Income Tax Contingency [Line Items]
Provisional of income tax expense for estimated effects of transition tax, net of adjustments related to uncertain tax positions	$ 237