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FAIR VALUE MEASUREMENT (Tables)

9 Months Ended

Sep. 30, 2025

Fair Value Disclosures [Abstract]

Schedule of Fair Value Hierarchy for Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following tables present the Company’s fair value hierarchy for those assets and liabilities measured at fair value on a recurring basis as of September 30, 2025 and December 31, 2024 (in millions):

			September 30, 2025
			Total						Level 1						Level 2						Level 3
Assets:
U.S. Treasury securities (1)			$	0.3					$	0.3					$	—					$	—
Marketable securities (1):
Mutual funds			26.8						26.8						—						—
Money market funds			7.1						7.1						—						—
Note receivable - building sale (2)			6.6						—						—						6.6
Total assets			$	40.8					$	34.2					$	—					$	6.6

			December 31, 2024
			Total						Level 1						Level 2						Level 3
Assets:
U.S. Treasury securities (1)			$	70.0					$	70.0					$	—					$	—
Marketable securities (1):
Mutual funds			23.8						23.8						—						—
Money market funds			16.5						16.5						—						—
Note receivable - building sale (3)			6.2						—						—						6.2
Total assets			$	116.5					$	110.3					$	—					$	6.2

___________________________

(1)These amounts are reflected within financial investments in the condensed consolidated balance sheets.

(2)This amount is reflected within other current assets, net in the condensed consolidated balance sheets.

(3)This amount is reflected within other assets, net in the condensed consolidated balance sheets.

Schedule of Fair Value Hierarchy for Assets and Liabilities Measured on a Nonrecurring Basis

The following tables present the Company’s fair value hierarchy for certain assets and liabilities held by the Company as of September 30, 2025 and December 31, 2024 (in millions):

			September 30, 2025
			Total						Level 1						Level 2						Level 3
Assets:
U.S. Treasury securities (1)			$	0.3					$	0.3					$	—					$	—
Deferred compensation plan assets (1)			33.9						33.9						—						—
Note receivable - building sale (2)			6.6						—						—						6.6
Total assets			$	40.8					$	34.2					$	—					$	6.6
Liabilities:
Deferred compensation plan liabilities (3)			$	33.9					$	33.9					$	—					$	—
Debt (4)			1,363.3						—						1,363.3						—
Total liabilities			$	1,397.2					$	33.9					$	1,363.3					$	—

			December 31, 2024
			Total						Level 1						Level 2						Level 3
Assets:
U.S. Treasury securities (1)			$	70.0					$	70.0					$	—					$	—
Deferred compensation plan assets (1)			40.3						40.3						—						—
Note receivable - building sale (5)			6.2						—						—						6.2
Total assets			$	116.5					$	110.3					$	—					$	6.2
Liabilities:
Deferred compensation plan liabilities (3)			$	40.3					$	40.3					$	—					$	—
Debt (4)			1,317.0						—						1,317.0						—
Total liabilities			$	1,357.3					$	40.3					$	1,317.0					$	—

___________________________

(1)These amounts are reflected within financial investments in the condensed consolidated balance sheets.

(2)This amount is reflected within other current assets in the condensed consolidated balance sheets.

(3)These amounts are reflected within other non-current liabilities in the condensed consolidated balance sheets.

(4)These balances are presented at fair value in this table, but are carried at their historical value within the condensed consolidated balance sheets.

(5)This amount is reflected within other assets, net in the condensed consolidated balance sheets.

Schedule of Fair Value of Debt Obligation

At September 30, 2025 and December 31, 2024, the fair values of the Company’s debt obligations were as follows (in millions):

			September 30, 2025						December 31, 2024
3.650% Senior Notes			$	646.7					$	638.4
1.625% Senior Notes			439.7						416.2
3.000% Senior Notes			276.9						262.4

Summary of Changes in the Fair Value of Level 3 Financial Assets

The following table sets forth a summary of changes in the fair value of the Company’s Level 3 financial assets and liabilities during the three and nine months ended September 30, 2025 (in millions):

			Level 3 Financial Assets for the Three Months Ended September 30, 2025
			Balance at Beginning of Period						Gains during Period						Adjustments						Additions						Settlements						Foreign Currency Translation						Balance at End of Period
Assets:
Note receivable - building sale			$	6.4					$	0.2					$	—					$	—					$	—					$	—					$	6.6
Total assets			$	6.4					$	0.2					$	—					$	—					$	—					$	—					$	6.6

			Level 3 Financial Assets for the Nine Months Ended September 30, 2025
			Balance at Beginning of Period						Gains during Period						Adjustments						Additions						Settlements						Foreign Currency Translation						Balance at End of Period
Assets:
Note receivable - building sale			$	6.2					$	0.4					$	—					$	—					$	—					$	—					$	6.6
Total assets			$	6.2					$	0.4					$	—					$	—					$	—					$	—					$	6.6

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