SHARE-BASED COMPENSATION - RSU Activity (Details) - RSUs $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($) $ / shares shares
Number of Shares
Beginning balance (in shares) | shares	0.0
Granted (in shares) | shares	0.4
Vested (in shares) | shares	0.0
Forfeited, expired or canceled (in shares) | shares	0.0
Ending balance (in shares) | shares	0.4
Weighted-Average Grant Date Fair Value per Share
Beginning balance, weighted-average grant date fair value (in dollars per shares) | $ / shares	$ 0
Granted, weighted-average grant date fair value (in dollars per shares) | $ / shares	17.72
Vested, weighted-average grant date fair value (in dollars per shares) | $ / shares	7.25
Forfeited, expired or canceled, weighted-average grant date fair value (in dollars per share) | $ / shares	22.89
Ending balance, weighted-average grant date fair value (in dollars per shares) | $ / shares	$ 18.41
Aggregate Intrinsic Value
Beginning balance | $	$ 0.0
Vested | $	0.3
Ending balance | $	$ 6.2