FINANCIAL INSTRUMENTS AND FAIR VALUE (Summary of Carrying Values and Fair Values of Debt) (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total carrying value	$ 2,228.6	$ 2,227.7
Total fair value	$ 2,067.5	2,085.1
Senior Notes | 4.50% Senior Notes due 2028
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Stated interest rate of debt instrument	4.50%
Total carrying value	$ 403.0	402.8
Total fair value	$ 383.7	384.8
Senior Notes | 4.625% Senior Notes due 2029
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Stated interest rate of debt instrument	4.625%
Total carrying value	$ 790.8	790.4
Total fair value	$ 736.0	744.0
Senior Notes | 4.75% Senior Notes due 2030
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Stated interest rate of debt instrument	4.75%
Total carrying value	$ 442.4	442.2
Total fair value	$ 404.8	410.3
Senior Notes | 5.00% Senior Notes due 2032
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Stated interest rate of debt instrument	5.00%
Total carrying value	$ 592.4	592.3
Total fair value	$ 543.0	$ 546.0