Segment, Geographic, and Significant Customer Information - Schedule of Financial Information by Segment (Parenthetical) (Details) - USD ($) $ in Millions	12 Months Ended
Apr. 28, 2023	Apr. 29, 2022	Apr. 30, 2021
Segment Reporting [Abstract]
Unallocated cost of revenue stock-based compensation expense	$ 24	$ 17	$ 14
Unallocated cost of revenue amortization of intangible assets	$ 42	$ 33	$ 41

Unallocated cost of revenue amortization of intangible assets.

No definition available.

Name:	ntap_UnallocatedCostOfRevenueAmortizationOfIntangibleAssets
Namespace Prefix:	ntap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration