Stock Purchase and Award Plans - Stock-based Compensation Expense (Details) - USD ($) $ in Millions	12 Months Ended
Apr. 29, 2022	Apr. 30, 2021	Apr. 24, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 359	$ 344	$ 297
Income tax benefits	(62)	(59)	(51)
Total stock-based compensation expense, net of tax	297	285	246
Cost of products sold
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	36	35	28
Research and development expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	40	38	36
Selling, general, and administrative expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	283	272	233
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	70	72	61
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	184	185	205
Performance share units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	66	49	0
Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 39	$ 38	$ 31

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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