Equity Based Compensation - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
Sep. 30, 2015	Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity-based compensation	$ 17.0	$ 12.0
2013 LTIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award shares authorized	30,000,000
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation award, vested	100,000	400,000
Restricted Stock Units [Member] \| Settled in Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock units granted	200,000	0
Stock based compensation award, vested	100,000	300,000
Restricted Stock Units [Member] \| Settled in Cash [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation award, vested		100,000
Stock based compensation award		$ 0.9
Performance Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock units granted	3,700,000	3,100,000
Stock based compensation award, vested	1,200,000	2,000,000
Performance Stock Units [Member] \| Settled in Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock units granted	2,600,000	2,000,000
Stock based compensation award, vested	1,000,000	1,500,000
Performance Stock Units [Member] \| Settled in Cash [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation award, vested	200,000	500,000
Stock based compensation award	$ 3.3	$ 8.2
Move Inc [Member] \| Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Converted stock	4,300,000
Assumed options exercised	200,000
Move Inc [Member] \| Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Converted stock	2,500,000

Share based compensation arrangement by share based payment award assumed options exercised.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section S99

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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- Definition

The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

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-Name Accounting Standards Codification

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- Definition

Aggregate cash paid by the entity during the period to settle equity instruments granted under equity-based payment arrangements.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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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

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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- 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

No definition available.

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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

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-Topic 718

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