Stock-Based Compensation (Details 2) (USD $)	3 Months Ended
Sep. 30, 2011
Restricted Stock Award [Member]
Changes in restricted stock awards
Unvested restricted stock awards, June 30, 2011, Shares	89,315
Vested, Shares	(45,596)
Forfeited, Shares	(291)
Unvested restricted stock awards, September 30, 2011, Shares	43,428
Weighted Average Fair Value, Unvested restricted stock awards, June 30, 2011	$ 32.90
Weighted Average Fair Value, Vested	$ 33.79
Weighted Average Fair Value, Forfeited	$ 29.60
Weighted Average Fair Value, Unvested restricted stock awards, September 30, 2011	$ 31.99
Restricted Stock Units - Performance Vesting [Member]
Changes in restricted stock awards
Unvested restricted stock awards, June 30, 2011, Shares	116,368
Granted, Shares	129,977
Unvested restricted stock awards, September 30, 2011, Shares	246,345
Weighted Average Fair Value, Unvested restricted stock awards, June 30, 2011	$ 26.89
Weighted Average Fair Value, Granted	$ 38.95
Weighted Average Fair Value, Unvested restricted stock awards, September 30, 2011	$ 31.27
Restricted Stock Units - Time Vesting [Member]
Changes in restricted stock awards
Unvested restricted stock awards, June 30, 2011, Shares	906,082
Granted, Shares	333,595
Vested, Shares	(197,315)
Forfeited, Shares	(4,493)
Unvested restricted stock awards, September 30, 2011, Shares	1,037,869
Weighted Average Fair Value, Unvested restricted stock awards, June 30, 2011	$ 25.81
Weighted Average Fair Value, Granted	$ 38.95
Weighted Average Fair Value, Vested	$ 25.60
Weighted Average Fair Value, Forfeited	$ 31.27
Weighted Average Fair Value, Unvested restricted stock awards, September 30, 2011	$ 30.05
EPS performance based portion of STEP [Member]
Changes in restricted stock awards
Unvested restricted stock awards, June 30, 2011, Shares	431,789
Forfeited, Shares	(431,789)
Unvested restricted stock awards, September 30, 2011, Shares	0
Weighted Average Fair Value, Unvested restricted stock awards, June 30, 2011	$ 35.23
Weighted Average Fair Value, Forfeited	$ 35.23
Weighted Average Fair Value, Unvested restricted stock awards, September 30, 2011	$ 0
TSR performance based portion of STEP [Member]
Changes in restricted stock awards
Unvested restricted stock awards, June 30, 2011, Shares	232,497
Forfeited, Shares	(232,497)
Unvested restricted stock awards, September 30, 2011, Shares	0
Weighted Average Fair Value, Unvested restricted stock awards, June 30, 2011	$ 8.21
Weighted Average Fair Value, Forfeited	$ 8.21
Weighted Average Fair Value, Unvested restricted stock awards, September 30, 2011	$ 0

Share based payment award equity instruments other than options forfeited in period weighted average fair value.

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- Definition

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

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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

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- Definition

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).

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

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-Topic 718

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- Definition

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.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

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-Publisher FASB

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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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.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(a)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(b)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Name Accounting Standards Codification

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- Definition

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

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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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