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DEBT - Schedule of long-term debt (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023	Mar. 16, 2022	Dec. 15, 2020	Jan. 12, 2017
Debt Instrument
Total debt	$ 1,439.6	$ 1,439.2
Debt issuance costs	(5.7)
3.650% Senior Notes due January 2027
Debt Instrument
Total debt	648.1	647.9
Debt instrument face amount	$ 650.0	$ 650.0			$ 650.0
Interest rate (as a percent)	3.65%	3.65%			3.65%
1.625% Senior Notes due December 2030
Debt Instrument
Total debt	$ 495.0	$ 494.8
Debt instrument face amount	$ 500.0	$ 500.0		$ 500.0
Interest rate (as a percent)	1.625%	1.625%		1.625%
3.000% Senior Notes due March 2032
Debt Instrument
Total debt	$ 296.5	$ 296.5
Debt instrument face amount	$ 300.0	$ 300.0	$ 300.0
Interest rate (as a percent)	3.00%	3.00%	3.00%
Revolving Credit Agreement
Debt Instrument
Total debt	$ 0.0

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