INCOME TAXES - Provision for income taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Current
United States	$ (0.5)	$ 0.2	$ (18.3)
Outside United States	118.9	206.0	69.5
Total current income taxes	118.4	206.2	51.2
Deferred
United States	0.0	0.0	(2.8)
Outside United States	(13.0)	(95.1)	(29.0)
Total deferred income taxes	(13.0)	(95.1)	(31.8)
Provision for income taxes	$ 105.4	$ 111.1	$ 19.4