Financial Instruments and Fair Value Measurements - Summary of Investments at Cost or Amortized Cost (Detail) - USD ($) $ in Millions	Jul. 30, 2021	Apr. 30, 2021
Schedule of Available-for-sale Securities [Line Items]
Cost or amortized cost	$ 150	$ 167
Corporate Bonds
Schedule of Available-for-sale Securities [Line Items]
Cost or amortized cost	46	58
U.S. Treasury and Government Debt Securities
Schedule of Available-for-sale Securities [Line Items]
Cost or amortized cost	7	8
Certificates of Deposit
Schedule of Available-for-sale Securities [Line Items]
Cost or amortized cost	55	61
Mutual Funds
Schedule of Available-for-sale Securities [Line Items]
Cost or amortized cost	$ 42	$ 40