SUBSEQUENT EVENT (Details) - USD ($) $ / shares in Units, $ in Millions			1 Months Ended	3 Months Ended	12 Months Ended
	May 05, 2021	Apr. 27, 2021	Jan. 31, 2021	Mar. 31, 2021	Dec. 31, 2020	Jan. 25, 2021	Dec. 11, 2020
Class A common stock
Subsequent Events
Common stock, par value (in dollars per share)				$ 0.01	$ 0.01
Number of shares authorized				524,173,073	524,173,073
Gross proceeds				$ 581.6
Class A common stock | At-the-market equity offerings
Subsequent Events
Gross proceeds			$ 596.9		$ 272.8
Number of shares issued			187,100,000		91,000,000.0
Sales agents fees paid			$ 14.9		$ 6.8
Class A common stock | Equity Distribution Agreement [Member]
Subsequent Events
Common stock, par value (in dollars per share)						$ 0.01	$ 0.01
Number of shares authorized						50,000,000.0	178,000,000.0
Gross proceeds				$ 596.9
Number of shares issued				187,066,293
Sales agents fees paid				$ 14.9
Class B common stock
Subsequent Events
Common stock, par value (in dollars per share)				$ 0.01	$ 0.01
Number of shares authorized				0	51,769,784
Subsequent Events | Class A common stock
Subsequent Events
Common stock, par value (in dollars per share)		$ 0.01
Increase in authorized capital		500,000,000
Number of shares authorized		1,024,173,073
Gross proceeds	$ 153.0
Number of shares issued	15,500,000
Sales agents fees paid	$ 3.8
Subsequent Events | Class A common stock | At-the-market equity offerings
Subsequent Events
Number of shares authorized		43,000,000
Subsequent Events | Class A common stock | Equity Distribution Agreement [Member]
Subsequent Events
Common stock, par value (in dollars per share)		$ 0.01
Number of shares authorized		43,000,000