STOCK-BASED COMPENSATION - Combined Stock Option Activity (Details) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) $ / shares shares
Shares
Options outstanding, beginning of period (in shares) | shares	7,391
Granted (in shares) | shares	1,574
Exercised (in shares) | shares	(1,170)
Forfeited (in shares) | shares	(606)
Options outstanding, end of period (in shares) | shares	7,189
Vested and expected to vest (in shares) | shares	6,176
Exercisable (in shares) | shares	3,398
Weighted-average Exercise Price
Options outstanding, beginning of period (in dollars per share) | $ / shares	$ 59.88
Granted (in dollars per share) | $ / shares	129.71
Exercised (in dollars per share) | $ / shares	47.93
Forfeited (in dollars per share) | $ / shares	85.69
Options outstanding, end of period (in dollars per share) | $ / shares	74.94
Vested and expected to vest (in dollars per share) | $ / shares	71.97
Exercisable (in dollars per share) | $ / shares	$ 50.06
Weighted-average remaining contractual term
Vested and expected to vest	6 years 8 months 12 days
Exercisable	5 years 4 months 24 days
Aggregate intrinsic value
Vested and expected to vest | $	$ 267,722
Exercisable | $	$ 210,796