Employee Equity-Based Compensation - Stock Option Activity (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Number of Shares
Outstanding, beginning balance (shares)	8,045,461	10,132,562
Granted (shares)	489,804	1,738,083
Forfeited (shares)	(370,106)	(713,070)
Exercised (shares)	(426,762)	(2,631,935)
Expired (shares)	(545,857)	(480,179)
Outstanding, ending balance (shares)	7,192,540	8,045,461	10,132,562
Exercisable, ending balance (shares)	4,865,369
Weighted Average Exercise Price per Share
Outstanding, beginning balance (dollars per share)	$ 14.18	$ 12.28
Granted (dollars per share)	7.09	8.53
Forfeited (dollars per share)	14.04	14.23
Exercised (dollars per share)	3.79	2.30
Expired (dollars per share)	19.85	18.62
Outstanding, ending balance (dollars per share)	13.89	$ 14.18	$ 12.28
Exercisable, ending balance (dollars per share)	$ 14.44
Cash received from the exercise of options	$ 1,600,000
Tax benefit from share-based compensation	0
Intrinsic value of options exercised	3,300,000	$ 23,500,000	$ 2,300,000
Fair value of shares vesting	$ 11,100,000	$ 9,000,000	$ 9,900,000