Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	8 Months Ended	12 Months Ended
	Dec. 31, 2017	Apr. 24, 2020	Apr. 26, 2019	Apr. 27, 2018	Jan. 25, 2019	Apr. 28, 2017
Income Tax Contingency [Line Items]
U.S. federal corporate tax rate	35.00%	21.00%
Discrete tax expense on deferred tax assets and liabilities				$ 108
Tax expense related to deferred tax assets for equity-based compensation awards		$ 15	$ 16		$ 6
Percentage of transition tax on accumulated foreign earnings and profits, due to TCJA		15.50%
Percentage of transition tax on remaining foreign earnings due to TCJA		8.00%
Discrete tax expense for the estimated U.S. federal and state income tax impacts of the transition tax				732
Reduction in provisional estimate due to TCJA			5
Global minimum tax expense for federal and state impacts		$ 32	22	0
Deferred tax assets, decrease in valuation allowance		$ 19
Operating loss and credit carryforwards, expiration dates range, minimum		2021
Operating loss and credit carryforwards, expiration dates range, maximum		2038
Gross unrecognized tax benefits		$ 211	296	348		$ 218
Gross unrecognized tax benefits included in other long-term liabilities		136	252
Unrecognized tax benefits that would affect provision for income taxes		136
Provisional gross unrecognized tax benefits				114
Tax penalties and interest on unrecognized tax benefits		8	4	$ 5
Accrued tax penalties and interest on unrecognized tax benefits		10	$ 18
Federal Income Tax
Income Tax Contingency [Line Items]
Operating loss carry forwards		1
Tax credit carry forward amount		2
State and Local Income Tax
Income Tax Contingency [Line Items]
Operating loss carry forwards		26
Tax credit carry forward amount		131
Foreign Income Tax
Income Tax Contingency [Line Items]
Operating loss carry forwards		3
Tax credit carry forward amount		$ 23
Staff Accounting Bulletin 118
Income Tax Contingency [Line Items]
Maximum measurement period due to TCJA		1 year