Equity Based Compensation	6 Months Ended
Jun. 30, 2011
Statement - Equity Based Compensation
Equity Based Compensation	11. Equity Based Compensation Equity compensation expense was $4.3 million and $3.3 million in the second quarter of 2011 and 2010, respectively, and $12.1 million and $9.9 million in the first six months of 2011 and 2010, respectively. In the first quarter of 2011, the Company granted 0.5 million stock options at a weighted average strike price of $59.74 per share and 0.2 million performance contingent units to employees. Also in the first quarter of 2011, non-employee directors were granted a total of 14,200 shares of common stock. As of June 30, 2011, 1.4 million share options at a weighted average strike price of $43.29 per share were vested and exercisable with a remaining weighted average exercise period of 4.3 years. As of June 30, 2011, the total compensation cost of non-vested awards not yet recognized in the financial statements was $31.0 million. It is estimated that these costs will vest over a weighted average period of 2.4 years.

Disclosure of compensation-related costs for share-based compensation which may include disclosure of policies, compensation plan details, allocation of stock compensation, incentive distributions, share-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph 64, 65, A240

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 93-6
-Paragraph 53

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14

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