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DEBT - Schedule of long-term debt (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Jan. 29, 2021	Dec. 31, 2020	Oct. 31, 2013	Jun. 30, 2012
Debt Instrument [Line Items]
Unamortized debt issuance costs and discounts	$ (10.4)	$ (22.3)
Total debt	1,366.6	2,004.9
Less: current borrowings	367.3	277.6
Long-term debt	$ 999.3	$ 1,727.3
Senior notes \| 6.50% Senior notes due 2026
Debt Instrument [Line Items]
Interest rate, stated percentage	6.50%	6.50%	6.50%
Long-term debt, gross	$ 202.9	$ 633.1
Unsecured debt \| 3.40% 2012 Private placement notes due 2022
Debt Instrument [Line Items]
Interest rate, stated percentage	3.40%	3.40%				3.40%
Long-term debt, gross	$ 0.0	$ 169.9
Unsecured debt \| 3.15% 2013 Private placement notes due 2023
Debt Instrument [Line Items]
Interest rate, stated percentage	3.15%	3.15%			3.15%
Long-term debt, gross	$ 272.2	$ 288.8
Unsecured debt \| 5.75% 2020 Private placement notes due 2025
Debt Instrument [Line Items]
Interest rate, stated percentage	5.75%	5.75%		5.75%
Long-term debt, gross	$ 213.5	$ 226.5
Unsecured debt \| 4.00% 2012 Private placement notes due 2027
Debt Instrument [Line Items]
Interest rate, stated percentage	4.00%	4.00%				4.00%
Long-term debt, gross	$ 80.1	$ 84.9
Unsecured debt \| 4.00% 2012 Private placement notes due 2032
Debt Instrument [Line Items]
Interest rate, stated percentage	4.00%	4.00%				4.00%
Long-term debt, gross	$ 106.7	$ 113.3
Unsecured debt \| 3.75% 2013 Private placement notes due 2033
Debt Instrument [Line Items]
Interest rate, stated percentage	3.75%	3.75%			3.75%
Long-term debt, gross	$ 106.7	$ 113.3
Bank borrowings and other
Debt Instrument [Line Items]
Long-term debt, gross	$ 394.9	$ 397.4