Stock-Based Compensation (Detail Textual) $ in Millions	3 Months Ended
Sep. 30, 2016 USD ($) shares
2006 Stock Incentive Plan \| PRSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period to establish average share price for performance measurement	90 days
2006 Stock Incentive Plan \| PRSUs \| September 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
PRSUs granted	180,570
2006 Stock Incentive Plan \| PRSUs \| September 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
PRSUs granted	208,160
Period to establish average share price for performance measurement	90 days
2006 Stock Incentive Plan \| PRSUs \| September2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
PRSUs granted	193,420
Period to establish average share price for performance measurement	90 days
2006 Stock Incentive Plan \| RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost \| $	$ 51.9
Weighted-average period to recognize unrecognized compensation cost (in years)	3 years
2006 Stock Incentive Plan \| RSUs \| October 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage of awards	50.00%
2006 Stock Incentive Plan \| RSUs \| October 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage of awards	50.00%
2006 Stock Incentive Plan \| RSUs \| September 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of additional awards to be issued pursuant to condition	19,190
2006 Stock Incentive Plan \| RSUs \| September 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of additional awards to be issued pursuant to condition	11,811
2006 Stock Incentive Plan \| RSUs \| September2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of additional awards to be issued pursuant to condition	193,420
Description of vesting of awards	In addition to the performance and market conditions, there is a service vesting condition which stipulates that 50 percent of the earned award will vest on October 1, 2019 and 50 percent of the earned award will vest on October 1, 2020
2006 Plan And Predecessor Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for grants	12,450,000
Cumulative grants of equity instruments awarded	13,978,332
Number of cumulative equity instruments forfeited	4,217,234

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- Definition

Cumulative grants of equity instruments awarded.

+ References

No definition available.

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Cumulative of equity instruments awards forfeited.

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Represents the number of additional awards to be issued pursuant to the condition.

+ References

No definition available.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Description of award terms as to how many shares or portion of an award are no longer contingent on satisfaction of either a service condition, market condition or a performance condition, thereby giving the employee the legal right to convert the award to shares, to sell the shares, and be entitled to the cash proceeds of such sale. For example, vesting may be expressed as being 25 percent of the shares under option on each anniversary of the grant date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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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.

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Percentage of vesting of share-based compensation awards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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