Equity Based Compensation	3 Months Ended
Equity Based Compensation	Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Equity Based Compensation	ity compensation expense was $9.6 million and $11.5 million for the three months ended March 31, 2017 and 2016, respectively. In the first quarter of 2017, the Company granted 0.2 million stock appreciation rights at $129.72 weighted average exercise price per share and 0.2 million performance contingent units to employees. Additionally, non-employee directors were granted a total of 8,177 shares of common stock. As of March 31, 2017, 1.8 million share options at a weighted average strike price per share of $60.33 were vested and exercisable, with a remaining weighted average exercise period of 5.0 years.

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