INCOME TAXES - ASC Topic 718 (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounting Pronouncements
Effective tax (benefit) rate (as a percent)	23.10%	22.30%	20.30%
Maximum
Accounting Pronouncements
Tax benefit realized from dividends on share-based payment awards	$ 0.1	$ 0.1	$ 0.1
ASC Topic 718, Compensation - Stock Compensation
Accounting Pronouncements
Effective tax (benefit) rate (as a percent)	0.50%	0.90%	(0.80%)