Share-Based Compensation - Share-Based Compensation Awards Available for Grant or Issuance (Detail)	12 Months Ended
Jun. 30, 2018 shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Balance beginning	2,947,069
Additional shares authorized	2,346,384
Stock options granted	(61,825)
Deferred stock units granted	(1,331,073)
Market stock units granted	(300,071)
Performance stock units granted	(315,380)
Market stock units performance adjustment	68,003
Purchases under employee stock purchase plan	(486,263)
Forfeited	692,035
Plan shares expired	(4,500)
Fungible Shares Ratio Adjustment	(1,344,162)
Balance ending	2,210,217
2010 Employee Stock Purchase Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Balance beginning	380,170
Additional shares authorized	346,384
Purchases under employee stock purchase plan	(486,263)
Balance ending	240,291
2001 [Member] \| Incentive Compensation Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Forfeited	4,500
Plan shares expired	(4,500)
2010 [Member] \| Incentive Compensation Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Balance beginning	2,566,899
Additional shares authorized	2,000,000
Stock options granted	(61,825)
Deferred stock units granted	(1,331,073)
Market stock units granted	(300,071)
Performance stock units granted	(315,380)
Market stock units performance adjustment	68,003
Forfeited	687,535
Fungible Shares Ratio Adjustment	(1,344,162)
Balance ending	1,969,926

Deferred stock units granted.

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Share based compensation arrangement by share based payment award equity instruments other than options adjustments for performance results attained.

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- Definition

Share based compensation arrangement by share based payment award equity instruments other than options performance stock units grants in period.

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Share based compensation arrangement by share based payment award fungible shares ratio adjustment.

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Share based compensation arrangement by share based payment award plan shares expired.

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Share based compensation arrangement by share based payment awards forfeitures in period.

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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).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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=109197908&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

Number of additional shares authorized for issuance under an established share-based compensation plan.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Net number of share options (or share units) granted during the period.

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-Publisher FASB
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-Topic 718
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- Definition

The number of shares purchased on the open market during the period for issuance to employees under the plan.

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-Name Accounting Standards Codification
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