New Accounting Pronouncements (Details) - USD ($) $ in Millions	Oct. 25, 2019	Apr. 27, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use assets	$ 989
Total lease liability	$ 1,010
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use assets		$ 1,000
Total lease liability		$ 1,000