Revenue - Narrative (Details) - USD ($) $ in Millions	6 Months Ended
	Oct. 30, 2020	Apr. 24, 2020
Disaggregation of Revenue [Line Items]
Deferred revenue	$ 317	$ 303
Revenue recognized that was previously included in deferred revenue	162
Estimated revenue expected to be recognized in future periods related to unsatisfied performance obligations	$ 1,100
Period over which remaining performance obligations are expected to be recognized as revenue	four years
Other accrued expenses
Disaggregation of Revenue [Line Items]
Rebate obligations	$ 955	706
Deferred revenue	225	213
Reduction of accounts receivable
Disaggregation of Revenue [Line Items]
Rebate obligations	464	321
Other liabilities
Disaggregation of Revenue [Line Items]
Deferred revenue	$ 92	$ 90