STOCK-BASED COMPENSATION - Summary of Stock-Based Compensation Awards Granted (Details) - Employees shares in Thousands, $ in Thousands	9 Months Ended
	Sep. 30, 2021 USD ($) shares
Restricted stock units
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Grants in period (in shares) | shares	819
Total Fair Value | $	$ 106,286
Non-qualified stock options
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Options granted in period (in shares) | shares	1,472
Total Fair Value | $	$ 55,643
Common Stock
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Grants in period (in shares) | shares	5
Total Fair Value | $	$ 601