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FINANCIAL INSTRUMENTS AND FAIR VALUE - Schedule of Carrying Values and Fair Values of Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Carrying Value:
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 2,261.1	$ 2,260.6
Fair Value:
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 2,197.5	2,115.8
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%
Senior Notes | 4.50% Senior Notes due 2028 | Carrying Value:
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 403.7	403.4
Senior Notes | 4.50% Senior Notes due 2028 | Fair Value:
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 397.9	385.8
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%
Senior Notes | 4.625% Senior Notes due 2029 | Carrying Value:
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 792.6	791.9
Senior Notes | 4.625% Senior Notes due 2029 | Fair Value:
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 772.0	742.0
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%
Senior Notes | 4.75% Senior Notes due 2030 | Carrying Value:
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 443.0	442.8
Senior Notes | 4.75% Senior Notes due 2030 | Fair Value:
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 429.4	412.7
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%
Senior Notes | 5.00% Senior Notes due 2032 | Carrying Value:
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 593.5	593.0
Senior Notes | 5.00% Senior Notes due 2032 | Fair Value:
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	570.0	546.0
Mortgage notes payable bearing interest at fixed rates
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	28.2	29.3
Long-term Debt	$ 28.4	$ 29.6

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