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Earnings Per Share - Reconciliation of Denominators of Basic and Diluted Earnings Per Share Computations (Detail) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Weighted-average shares outstanding used to compute basic earnings per share	70,696us-gaap_WeightedAverageNumberOfSharesOutstandingBasic	73,821us-gaap_WeightedAverageNumberOfSharesOutstandingBasic	71,985us-gaap_WeightedAverageNumberOfSharesOutstandingBasic	76,173us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Effect of dilutive common stock equivalents	3,174us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment	2,553us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment	3,137us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment	2,159us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment
Weighted-average shares outstanding and dilutive securities used to compute dilutive earnings per share	73,870us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	76,374us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	75,122us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding	78,332us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding

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- Definition

The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 45

-Paragraph 16

-URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1505-109256

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 45

-Paragraph 10

-URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1448-109256



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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Weighted-Average Number of Common Shares Outstanding

-URI http://asc.fasb.org/extlink&oid=6528421

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