Acquisitions, Dispositions, and Funded Research and Development Arrangements - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Jan. 23, 2026	Jan. 24, 2025	Jan. 23, 2026	Jan. 24, 2025	Apr. 25, 2025
Business Combination [Line Items]
Goodwill	$ 41,892		$ 41,892		$ 41,737
Revenue	36	$ 50	108	$ 133
Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Business Combination [Line Items]
Additional funding	283		283
Milestone payments	$ 1,200		$ 1,200
Business Combinations
Business Combination [Line Items]
Total consideration for the transaction, net of cash acquired					128
Assets acquired					159
Liabilities assumed					31
Goodwill					108
Contingent consideration					20
Business Combinations | IPR&D
Business Combination [Line Items]
Indefinite-lived intangible assets					$ 50