MEZZANINE EQUITY, COMMON STOCK AND STOCKHOLDERS' (DEFICIT) EQUITY - Schedule Of Activity Related To Time-Based And Market-Based RSUs (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Time-Based RSUs
Number of RSUs
Unvested restricted stock, beginning balance (in shares)	47,711,649
Granted in acquisitions (in shares)	124,934
Granted (in shares)	33,044,671
Vested (in shares)	(27,881,049)
Forfeited (in shares)	(3,572,135)
Unvested restricted stock, ending balance (in shares)	49,428,070	47,711,649
Weighted- average grant date fair value
Unvested restricted stock, weighted-average grant date fair value, beginning balance (in dollars per share)	$ 10.84
Granted acquisition, weighted-average grant date fair value (in dollars per share)	50.63
Granted, weighted-average grant date fair value (in dollars per share)	38.26
Vested, weighted-average grant date fair value (in dollars per share)	19.57
Forfeited, weighted-average grant date fair value (in dollars per share)	23.36
Unvested restricted stock, weighted-average grant date fair value, ending balance (in dollars per share)	$ 31.78	$ 10.84
Market-Based RSUs
Number of RSUs
Unvested restricted stock, beginning balance (in shares)	27,663,658
Granted (in shares)	35,520,000
Vested (in shares)	(4,264,814)	0	0
Forfeited (in shares)	0
Unvested restricted stock, ending balance (in shares)	58,918,844	27,663,658
Weighted- average grant date fair value
Unvested restricted stock, weighted-average grant date fair value, beginning balance (in dollars per share)	$ 0.29
Granted, weighted-average grant date fair value (in dollars per share)	22.68
Vested, weighted-average grant date fair value (in dollars per share)	2.34
Forfeited, weighted-average grant date fair value (in dollars per share)	0
Unvested restricted stock, weighted-average grant date fair value, ending balance (in dollars per share)	$ 23.50	$ 0.29