Equity-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2014

Management Units

Equity-based compensation

Schedule of activity related to the Management Units provided to partner and non-partner employees

	Units			Weighted average fair value at grant date
Outstanding at January 1, 2014		882,080		$	270.05
Granted		1,609			1,224.00
Forfeited		(2,895	)		836.19
Outstanding at March 31, 2014		880,794		$	269.94
Outstanding at January 1, 2013		855,003			242.55
Granted		2,495			791.16
Forfeited		(1,272	)		101.75
Outstanding at March 31, 2013		856,226		$	244.72

Schedule of activity related to the unvested Management Units provided to partner and non-partner employees

	Shares			Weighted Average Grant Date Fair Value
Unvested Balance at January 1, 2014		452,957		$	485.44
Granted		1,609			1,224.00
Forfeited		(2,894	)		836.19
Vested		(6,352	)		501.22
Unvested Balance at March 31, 2014		445,320		$	485.61

Parent Company Investment | Management Units provided upon joining

Equity-based compensation

Summary of vesting schedule

Years 1 through 4	0	%
End of year 5	50	%
End of year 6	662/3	%
End of year 7	831/3	%
End of year 8	100	%

Parent Company Investment | Management Units are granted as part of certain partner's incentive arrangements upon joining | Partners

Equity-based compensation

Summary of vesting schedule

Years 1 and 2	0	%
End of year 3	331/3	%
End of year 4	662/3	%
End of year 5	100	%