FINANCIAL INSTRUMENTS AND FAIR VALUE - Schedule of Carrying Values and Fair Values of Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Carrying Value:
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 2,262.1	$ 2,261.6
Fair Value:
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 2,206.7	2,218.5
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	$ 404.2	403.9
Senior Notes \| 4.50% Senior Notes due 2028 \| Fair Value:
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 399.5	399.9
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	$ 794.2	793.4
Senior Notes \| 4.625% Senior Notes due 2029 \| Fair Value:
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 776.0	778.0
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	$ 443.5	443.2
Senior Notes \| 4.75% Senior Notes due 2030 \| Fair Value:
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	$ 431.7	433.9
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	$ 594.3	593.9
Senior Notes \| 5.00% Senior Notes due 2032 \| Fair Value:
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	573.0	579.0
Mortgage notes payable bearing interest at fixed rates
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt	26.6	27.7
Long-term Debt	$ 26.0	$ 27.2

Contractual interest rate for funds borrowed, under the debt agreement.

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