ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME - Changes in Accumulated Other Comprehensive (Loss) Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balance	$ 2,349.1	$ 2,500.8	$ 2,318.1
Balance	2,344.3	2,349.1	2,500.8
Accumulated Other Comprehensive (Loss) Income
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balance	(298.1)	(197.4)	(194.8)
Other comprehensive (loss) income before reclassifications, net	(20.3)	(102.2)	(21.5)
Reclassifications, pretax	(35.9)	1.5	18.9
Tax benefit reclassified	8.4
Balance	(345.9)	(298.1)	(197.4)
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balance	(315.7)	(169.4)	(138.8)
Other comprehensive (loss) income before reclassifications, net	(25.5)	(146.3)	(30.6)
Reclassifications, pretax	0.0	0.0	0.0
Tax benefit reclassified	0.0
Balance	(341.2)	(315.7)	(169.4)
Pension and Post-retirement Plans
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balance	(5.5)	(0.3)	(3.2)
Other comprehensive (loss) income before reclassifications, net	3.4	(5.2)	2.9
Reclassifications, pretax	0.0	0.0	0.0
Tax benefit reclassified	0.0
Balance	(2.1)	(5.5)	(0.3)
Available-for-Sale Debt Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balance	1.1	0.0	0.0
Other comprehensive (loss) income before reclassifications, net	(1.1)	1.1	0.0
Reclassifications, pretax	0.0	0.0	0.0
Tax benefit reclassified	0.0
Balance	0.0	1.1	0.0
Derivative Financial Instrument Revaluation
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balance	22.0	(27.7)	(52.8)
Other comprehensive (loss) income before reclassifications, net	2.9	48.2	6.2
Reclassifications, pretax	(35.9)	1.5	18.9
Tax benefit reclassified	8.4
Balance	$ (2.6)	$ 22.0	$ (27.7)