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FAIR VALUE MEASUREMENT - Fair Values of Debt Obligations (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024	Mar. 16, 2022	Dec. 15, 2020	Jan. 12, 2017
Debt
Debt obligations	$ 1,363.3	$ 1,317.0
Level 2
Debt
Debt obligations	$ 1,363.3	$ 1,317.0
3.650% Senior Notes
Debt
Interest rate (as a percent)	3.65%	3.65%			3.65%
3.650% Senior Notes | Level 2
Debt
Debt obligations	$ 646.7	$ 638.4
1.625% Senior Notes
Debt
Interest rate (as a percent)	1.625%	1.625%		1.625%
1.625% Senior Notes | Level 2
Debt
Debt obligations	$ 439.7	$ 416.2
3.000% Senior Notes
Debt
Interest rate (as a percent)	3.00%	3.00%	3.00%
3.000% Senior Notes | Level 2
Debt
Debt obligations	$ 276.9	$ 262.4

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- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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- Definition

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

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