PREFERRED STOCK AND COMMON SHAREHOLDERS’ EQUITY - Schedule of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 589.2	$ 858.8	$ 1,362.4	$ 1,461.1	$ 1,591.9	$ 1,714.1
Amounts reclassified from accumulated other comprehensive loss	0.0	(0.1)	0.0	(0.4)	(0.4)	(0.4)
Tax effect of adjustments	0.0	0.0	0.2	0.8	(0.1)	(0.5)
Ending balance	580.8	589.2	858.8	1,513.5	1,461.1	1,591.9
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(155.6)	(238.2)	(282.9)	(249.0)	(241.6)	(215.5)
Ending balance	(170.4)	(155.6)	(238.2)	(178.1)	(249.0)	(241.6)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(148.0)	(230.8)	(276.0)	(242.1)	(234.4)	(206.7)
Current year adjustments, before reclassifications	(14.9)	82.8	45.2	73.4	(7.7)	(27.7)
Ending balance	(162.9)	(148.0)	(230.8)	(168.7)	(242.1)	(234.4)
Net Benefit Plan Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(6.5)	(6.5)	(6.5)	(7.4)	(7.4)	(7.4)
Ending balance	(6.5)	(6.5)	(6.5)	(7.4)	(7.4)	(7.4)
Unrealized Gain (Loss) on Derivative Instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1.1)	(0.9)	(0.4)	0.5	0.2	(1.4)
Current year adjustments, before reclassifications	0.1	(0.1)	(0.7)	(2.9)	0.8	2.5
Amounts reclassified from accumulated other comprehensive loss	0.0	(0.1)	0.0	(0.4)	(0.4)	(0.4)
Tax effect of adjustments	0.0	0.0	0.2	0.8	(0.1)	(0.5)
Ending balance	$ (1.0)	$ (1.1)	$ (0.9)	$ (2.0)	$ 0.5	$ 0.2