Income Taxes (Additional Information) (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended	12 Months Ended
	Feb. 28, 2018	Apr. 28, 2018	Jan. 27, 2018	Apr. 28, 2018	Jul. 28, 2018	Dec. 31, 2017
Income Tax Contingency [Line Items]
Undistributed earnings for certain foreign subsidiaries						$ 75,000
Tax Cuts and Jobs Act of 2017, tax expense for foreign withholding tax		$ 1,200	$ 1,200	$ 1,200
Foreign earnings repatriated		67,000
Tax Cuts and Jobs Act of 2017, provisional tax expense				11,100
Tax Cuts and Jobs Act of 2017, transition tax expense		8,900		8,900
Tax Cuts and Jobs Act of 2017, re-measurement of net deferred tax assets		1,000		1,000
Unrecognized tax benefits		2,000		2,000
Unrecognized tax benefits that would impact effective tax rate		1,700		1,700
Unrecognized tax benefit that could be reduced in next 12 months		250		$ 250
Foreign Tax Authority
Income Tax Contingency [Line Items]
Income taxes paid	$ 1,200	$ 1,200
Forecast
Income Tax Contingency [Line Items]
Blended federal tax rate					27.00%