TAXATION - Reconciliation of Changes in Unrecognized Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of period	$ 61.9	$ 69.9	$ 20.0
Additions for tax positions related to the current year	15.9	6.6	1.4
Additions for tax positions related to prior years	14.2	2.2	1.2
Additions for tax positions related to prior years of acquired entities	0.0	0.0	54.1
Reductions for tax positions related to prior years	(3.5)	(9.9)	(4.0)
Reductions related to lapse of statute of limitations	(1.9)	(6.9)	(2.8)
Balance at end of period	$ 86.6	$ 61.9	$ 69.9