Income Taxes (Additional Information) (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		12 Months Ended
	Feb. 28, 2018	Apr. 28, 2018	Jan. 27, 2018	Jul. 28, 2018
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
Tax Cuts and Jobs Act of 2017, provisional tax expense			11,100
Tax Cuts and Jobs Act of 2017, transition tax expense			9,000
Tax Cuts and Jobs Act of 2017, re-measurement of net deferred tax assets			900
Unrecognized tax benefits			2,000
Unrecognized tax benefits that would impact effective tax rate			1,600
Unrecognized tax benefit that could be reduced in next 12 months			$ 250
Subsequent Event
Income Tax Contingency [Line Items]
Foreign earnings repatriated	$ 26,000
Foreign Tax Authority | Subsequent Event
Income Tax Contingency [Line Items]
Income Taxes Paid	$ 1,200
Forecast
Income Tax Contingency [Line Items]
Blended federal tax rate				27.00%
Foreign earnings repatriated		$ 67,000