Derivatives and Currency Exchange Risk Management - Classification and Fair Value Amounts of Derivative Instruments in Balance Sheets (Details) - USD ($) $ in Millions	Oct. 30, 2020	Apr. 24, 2020
Derivatives, Fair Value [Line Items]
Derivative Assets, Fair Value	$ 87	$ 402
Derivative Liabilities, Fair Value	201	42
Currency exchange rate contracts
Derivatives, Fair Value [Line Items]
Derivative Assets, Fair Value	83	399
Derivative Liabilities, Fair Value	201	17
Total return swaps
Derivatives, Fair Value [Line Items]
Derivative Assets, Fair Value	2
Derivative Liabilities, Fair Value		25
Cross-currency interest rate contracts
Derivatives, Fair Value [Line Items]
Derivative Assets, Fair Value	2	3
Derivatives designated as hedging instruments
Derivatives, Fair Value [Line Items]
Derivative Assets, Fair Value	50	374
Derivative Liabilities, Fair Value	158	4
Derivatives designated as hedging instruments | Currency exchange rate contracts | Other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets, Fair Value	44	271
Derivatives designated as hedging instruments | Currency exchange rate contracts | Other assets
Derivatives, Fair Value [Line Items]
Derivative Assets, Fair Value	6	103
Derivatives designated as hedging instruments | Currency exchange rate contracts | Other accrued expenses
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Fair Value	88	2
Derivatives designated as hedging instruments | Currency exchange rate contracts | Other liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Fair Value	70	2
Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Derivative Assets, Fair Value	37	28
Derivative Liabilities, Fair Value	43	38
Derivatives not designated as hedging instruments | Currency exchange rate contracts | Other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets, Fair Value	33	25
Derivatives not designated as hedging instruments | Currency exchange rate contracts | Other accrued expenses
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Fair Value	43	13
Derivatives not designated as hedging instruments | Total return swaps | Other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets, Fair Value	2	0
Derivatives not designated as hedging instruments | Total return swaps | Other accrued expenses
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Fair Value	0	25
Derivatives not designated as hedging instruments | Cross-currency interest rate contracts | Other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets, Fair Value	2	3
Derivatives not designated as hedging instruments | Cross-currency interest rate contracts | Other accrued expenses
Derivatives, Fair Value [Line Items]
Derivative Liabilities, Fair Value	$ 0	$ 0