Stock-Based Compensation (Details 2) (USD $)	3 Months Ended
Sep. 30, 2012
Restricted Stock Award [Member]
Changes in restricted stock awards
Unvested restricted stock awards, June 30, 2012, Shares	24,030
Vested, Shares	(21,359)
Forfeited, Shares	(190)
Unvested restricted stock awards, September 30, 2012	2,481
Weighted Average Fair Value, Unvested restricted stock awards, June 30, 2012	$ 28.83
Weighted Average Fair Value, Vested	$ 29.60
Weighted Average Fair Value, Forfeited	$ 29.60
Weighted Average Fair Value, Unvested restricted stock awards, September 30, 2012	$ 22.16
Restricted Stock Units - Performance Vesting [Member]
Changes in restricted stock awards
Unvested restricted stock awards, June 30, 2012, Shares	246,345
Granted, Shares	131,693
Vested, Shares	0
Forfeited, Shares	0
Unvested restricted stock awards, September 30, 2012	378,038
Weighted Average Fair Value, Unvested restricted stock awards, June 30, 2012	$ 31.27
Weighted Average Fair Value, Granted	$ 36.76
Weighted Average Fair Value, Vested	$ 0.00
Weighted Average Fair Value, Forfeited	$ 0.00
Weighted Average Fair Value, Unvested restricted stock awards, September 30, 2012	$ 32.18
Restricted Stock Units - Time Vesting [Member]
Changes in restricted stock awards
Unvested restricted stock awards, June 30, 2012, Shares	971,767
Granted, Shares	348,772
Vested, Shares	(218,554)
Forfeited, Shares	(23,193)
Unvested restricted stock awards, September 30, 2012	1,078,792
Weighted Average Fair Value, Unvested restricted stock awards, June 30, 2012	$ 30.47
Weighted Average Fair Value, Granted	$ 36.76
Weighted Average Fair Value, Vested	$ 30.26
Weighted Average Fair Value, Forfeited	$ 32.82
Weighted Average Fair Value, Unvested restricted stock awards, September 30, 2012	$ 32.49

The weighted average fair value at grant date for nonvested equity-based awards issued 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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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- Definition

The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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