XML 26 R76.htm IDEA: XBRL DOCUMENT v2.4.1.9

Restructuring and Other Charges - Activities Related to Restructuring Reserves (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Jan. 23, 2015	Jan. 24, 2014	Jan. 23, 2015	Jan. 24, 2014
Restructuring Cost and Reserve [Line Items]
Net charges	$ 0us-gaap_RestructuringCharges	$ 0us-gaap_RestructuringCharges	$ 0us-gaap_RestructuringCharges	$ 49.5us-gaap_RestructuringCharges
March 2014 Restructuring
Restructuring Cost and Reserve [Line Items]
Balance at beginning of period			26.5us-gaap_RestructuringReserve / us-gaap_RestructuringPlanAxis = ntap_MarchTwentyFourteenRestructuringMember
Net charges			0us-gaap_RestructuringCharges / us-gaap_RestructuringPlanAxis = ntap_MarchTwentyFourteenRestructuringMember
Cash payments			(26.5)us-gaap_PaymentsForRestructuring / us-gaap_RestructuringPlanAxis = ntap_MarchTwentyFourteenRestructuringMember
Balance at end of period	0us-gaap_RestructuringReserve / us-gaap_RestructuringPlanAxis = ntap_MarchTwentyFourteenRestructuringMember		0us-gaap_RestructuringReserve / us-gaap_RestructuringPlanAxis = ntap_MarchTwentyFourteenRestructuringMember
May 2013 Restructuring
Restructuring Cost and Reserve [Line Items]
Balance at beginning of period				0us-gaap_RestructuringReserve / us-gaap_RestructuringPlanAxis = ntap_MayTwentyThirteenRestructuringMember
Net charges				49.5us-gaap_RestructuringCharges / us-gaap_RestructuringPlanAxis = ntap_MayTwentyThirteenRestructuringMember
Cash payments				(48.9)us-gaap_PaymentsForRestructuring / us-gaap_RestructuringPlanAxis = ntap_MayTwentyThirteenRestructuringMember
Balance at end of period		$ 0.6us-gaap_RestructuringReserve / us-gaap_RestructuringPlanAxis = ntap_MayTwentyThirteenRestructuringMember		$ 0.6us-gaap_RestructuringReserve / us-gaap_RestructuringPlanAxis = ntap_MayTwentyThirteenRestructuringMember

X

- Definition

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

+ Details

Name:	us-gaap_PaymentsForRestructuring
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 5.P.4(b))

-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 5.P.3)

-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747



Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4

+ Details

Name:	us-gaap_RestructuringCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_RestructuringCostAndReserveLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 5.P.4(b))

-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4

+ Details

Name:	us-gaap_RestructuringReserve
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_RestructuringPlanAxis=ntap_MarchTwentyFourteenRestructuringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RestructuringPlanAxis=ntap_MayTwentyThirteenRestructuringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: