EQUITY - Class A Common Stock Activity (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Class of Stock [Line Items]
Issuance of shares of Class A Common Stock for equity-based awards (in shares)	3,270,490	2,457,256
Cash paid for tax liabilities	$ 91.9	$ 48.8
Shares of Class A Common Stock issued in settlement of vested RSUs and share options exercised
Class of Stock [Line Items]
Issuance of shares of Class A Common Stock for equity-based awards (in shares)	4,661,031	4,146,944
Gross value of shares issued	$ 216.8	$ 127.2
Reduction of shares of Class A Common Stock issued
Class of Stock [Line Items]
Issuance of shares of Class A Common Stock for equity-based awards (in shares)	(1,972,369)	(1,585,734)
Vesting period	3 years
Restricted shares forfeited (in shares)	(949,090)
Shares of Class A Common Stock purchased related to share issuances and forfeitures
Class of Stock [Line Items]
Issuance of shares of Class A Common Stock for equity-based awards (in shares)	581,828	(103,954)
Restricted shares forfeited (in shares)	(54,597)	(1,865)
Class A Common Stock | Reduction of shares of Class A Common Stock issued
Class of Stock [Line Items]
Restricted shares issued (in shares)	168,591	102,089
Class A Common Stock | Shares of Class A Common Stock purchased related to share issuances and forfeitures
Class of Stock [Line Items]
Restricted shares issued (in shares)	636,425	163,024
Common stock shares repurchased (in shares)	(19,549)	(265,113)