Commitments and Contingencies - Available Lines of Credit, Outstanding Standby Letter of Credits, and Bonds (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Line of Credit Facility [Line Items]
Net available for additional standby LOCs under sub-facility	$ 256,607	$ 256,176
Credit Facility [Member]
Line of Credit Facility [Line Items]
Multicurrency revolving line of credit	750,000	750,000
Letters of Credit Outstanding, Amount	(43,393)	(43,824)
Unsecured Multicurrency Revolving Lines of Credit [Member]
Line of Credit Facility [Line Items]
Multicurrency revolving line of credit	98,128	98,128
Letters of Credit Outstanding, Amount	(27,327)	(25,815)
Short-term borrowings	0	0
Line of Credit Facility, Remaining Borrowing Capacity	70,801	72,313
Surety Bond [Member]
Line of Credit Facility [Line Items]
Unsecured surety bonds in force	522,438	522,098
Line of Credit [Member]
Line of Credit Facility [Line Items]
Long-term Line of Credit	0	0
Line of Credit Facility, Remaining Borrowing Capacity	$ 706,607	$ 706,176