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FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS - Schedule of Long-term Debt Carrying Value and Fair Value (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Carrying Value
Debt Instrument
Debt, fair value	$ 1,381.8	$ 1,390.6
Fair Value
Debt Instrument
Debt, fair value	$ 1,376.9	1,340.4
4.00% Senior Notes | Senior Notes
Debt Instrument
Interest rate (as a percentage)	4.00%
4.00% Senior Notes | Carrying Value | Senior Notes
Debt Instrument
Debt, fair value	$ 750.0	750.0
4.00% Senior Notes | Fair Value | Senior Notes
Debt Instrument
Debt, fair value	$ 732.7	701.5
6.375% Senior Notes | Senior Notes
Debt Instrument
Interest rate (as a percentage)	6.375%
6.375% Senior Notes | Carrying Value | Senior Notes
Debt Instrument
Debt, fair value	$ 500.0	500.0
6.375% Senior Notes | Fair Value | Senior Notes
Debt Instrument
Debt, fair value	512.3	502.4
Real estate related | Carrying Value
Debt Instrument
Debt, fair value	131.8	140.6
Real estate related | Fair Value
Debt Instrument
Debt, fair value	$ 131.9	$ 136.4

X

- Definition

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

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