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Long-Term Compensation (Details 2) (RSU and PSA [Member], USD $)
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6 Months Ended |
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Jun. 30, 2012
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RSU and PSA [Member]
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| Compensation awards other than options | |
| Number of Shares, Beginning balance | 1,684,713 |
| Granted | 1,606,377 |
| Distributed | (666,533) |
| Forfeited/ Expired | (42,041) |
| Number of Shares, Ending balance | 2,582,516 |
| Weighted Average Grant-Date Fair Value, Ending balance | $ 31.98 |
| Vested, end of period | 48,735 |
| X | ||||||||||
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- Definition
Share based compensation arrangement by share based payment award equity instruments other than options distribution in period. No definition available.
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- Definition
Share based compensation arrangement by share based payment award equity instruments other than options forfeited and expiration. No definition available.
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| X | ||||||||||
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- Definition
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested end of period No definition available.
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- Definition
The weighted average fair value of share based compensation 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. No definition available.
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- Details
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| X | ||||||||||
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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). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Number of shares reserved for issuance under non-option equity instrument agreements awarded that validly exist and are outstanding, including vested instruments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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