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Goodwill and Purchased Intangible Assets, Net - Additional Information (Detail) $ in Millions	9 Months Ended
	Jan. 26, 2024 USD ($)
Finite-Lived Intangible Assets [Line Items]
Retirement of Amortized Assets	$ 37

X

- Definition

Retirement of amortized assets.

+ References

No definition available.

+ Details

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

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 926
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483154/926-20-50-5

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
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