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Stockholders' Equity - Additional Information (Detail) - $ / shares		3 Months Ended
	Jul. 29, 2016	Jun. 30, 2016
Repurchase of shares		525,000
Shares repurchased average price		$ 74.55
Subsequent Event [Member]
Repurchase of shares	182,500
Shares repurchased average price	$ 77.48
Stock repurchase remaining number of shares authorized to be repurchased	4,898,500

X

- Definition

Stock repurchase program average price during the period.

+ References

No definition available.

+ Details

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- Definition

The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

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X

- Definition

Number of shares that have been repurchased and retired during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30
-Article 5

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