ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2022		Jun. 30, 2021		Jun. 30, 2022		Jun. 30, 2021
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ (897.1)	[1]	$ (973.8)	[2]	$ (854.7)		$ (867.2)
Reclassifications into earnings:
Ending balance	(955.9)	[1]	(999.5)	[2]	(955.9)	[1]	(999.5)	[2]
Amortization of net actuarial loss and prior service cost, tax	0.2		0.2		0.4		0.4
Total
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(1,033.2)	[1]	(1,177.1)	[2]	(1,085.5)		(1,133.8)
Other comprehensive income other than reclassifications	14.8		30.8		65.7		(13.7)
Reclassifications into earnings:
Total reclassifications into earnings	1.1		1.3		2.5		2.5
Ending balance	(1,017.3)	[1]	(1,145.0)	[2]	(1,017.3)	[1]	(1,145.0)	[2]
Foreign Currency Translation Adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(1,011.4)		(1,082.7)		(1,062.2)		(1,038.2)
Other comprehensive income other than reclassifications	14.2		30.8		65.0		(13.7)
Reclassifications into earnings:
Total reclassifications into earnings	0.0		0.0		0.0		0.0
Ending balance	(997.2)		(1,051.9)		(997.2)		(1,051.9)
Net Investment Hedges
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(4.3)		(4.3)		(4.3)		(4.3)
Other comprehensive income other than reclassifications	0.0		0.0		0.0		0.0
Reclassifications into earnings:
Total reclassifications into earnings	0.0		0.0		0.0		0.0
Ending balance	(4.3)		(4.3)		(4.3)		(4.3)
Cash Flow Hedges
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	0.1				0.0
Other comprehensive income other than reclassifications	0.6				0.7
Reclassifications into earnings:
Total reclassifications into earnings	0.0				0.0
Ending balance	0.7				0.7
Pension and Postretirement Benefits
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(17.6)		(90.1)		(19.0)		(91.3)
Other comprehensive income other than reclassifications	0.0		0.0		0.0		0.0
Reclassifications into earnings:
Total reclassifications into earnings	1.1		1.3		2.5		2.5
Ending balance	$ (16.5)		$ (88.8)		$ (16.5)		$ (88.8)

[1] The number of shares of Common Stock (par value $0.01 per share) outstanding at June 30, 2022 was 101.34.

[2] The number of shares of Common Stock (par value $0.01 per share) outstanding at June 30, 2021 was 101.34.