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Defined Benefit Pension Plans - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost, non-service cost	$ 2,409,000	$ 2,490,000	$ 7,210,000	$ 7,461,000
Contributions by employer			0	0
U.K. Plan
Defined Benefit Plan Disclosure [Line Items]
Contributions by employer			$ 2,222,000	$ 1,904,000

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