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Equity Based Compensation	9 Months Ended
Equity Based Compensation	Sep. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Equity Based Compensation	Equity Based Compensation Equity compensation expense was $5.7 million and $5.3 million in the third quarter of 2015 and 2014, respectively. In the first quarter of 2015, the Company granted 0.3 million stock appreciation rights at $90.06 weighted average exercise price per share and 0.2 million performance contingent units to employees. Additionally, non-employee directors were granted a total of 15,174 shares of common stock. As of September 30, 2015, 1.7 million share options at a weighted average strike price per share of $53.54 were vested and exercisable, with a remaining weighted average exercise period of 4.9 years. As of September 30, 2015, the total compensation cost of non-vested awards not yet recognized in the condensed consolidated financial statements was $27.7 million. It is estimated that these costs will vest over a weighted average period of 2.0 years.