Revenue - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
Apr. 26, 2024	Apr. 28, 2023
Disaggregation of Revenue [Abstract]
Revenue recognized	$ 2,218	$ 2,171

Amount of revenue recognized that was previously included in balance of contract with customer liability obligation as of the beginning of the period.

No definition available.

Name:	ntap_RevenueRecognizedFromBeginningContractWithCustomerLiability
Namespace Prefix:	ntap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration