EQUITY COMPENSATION - Restricted Units (Details) - USD ($) $ / shares in Units, $ in Millions					12 Months Ended
	Dec. 17, 2021	Sep. 16, 2021	Jun. 16, 2021	Mar. 17, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Equity compensation
Dividend declared and paid per class A common stock (in dollars per share)	$ 0.47	$ 0.47	$ 0.47	$ 0.47	$ 1.88
Distribution equivalents made to holders					$ 28.1
Class A Common Stock
Equity compensation
Shares delivered in period (in shares)					4,500,000	3,100,000
Dividend declared and paid per class A common stock (in dollars per share)					$ 1.88	$ 1.60	$ 1.28
Restricted units
Equity compensation
Shares delivered in period (in shares)					8,300,000	5,500,000
Restricted Units
Balance at the beginning of the period (in shares)					16,299,664
Granted (in shares)					9,683,848
Vested (in shares)					(6,397,649)
Forfeited (in shares)					(1,262,827)
Balance at the end of the period (in shares)					18,323,036	16,299,664
Weighted Average Grant Date Fair Value Per Unit
Balance at the beginning of the period (in dollars per share)					$ 24.30
Granted (in dollars per share)					46.19
Vested (in dollars per share)					20.78
Forfeited (in dollars per share)					30.51
Balance at the end of the period (in dollars per share)					$ 36.43	$ 24.30
Unrecognized compensation expenses					$ 462.0
Weighted average period of compensation expense expected to be recognized					3 years 2 months 26 days
Restricted units | Senior executives
Equity compensation
Annual award vesting percentage					25.00%