Commitments and Contingencies - Available Lines of Credit, Outstanding Standby Letter of Credits, and Bonds (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022	Oct. 18, 2019
Line of Credit Facility [Line Items]
Multicurrency revolving line of credit			$ 500,000,000
Credit Facility [Member]
Line of Credit Facility [Line Items]
Multicurrency revolving line of credit	$ 500,000,000	$ 500,000,000
Standby LOCs issued and outstanding	(59,059,000)	(55,990,000)
Line of credit facility, remaining borrowing capacity	240,941,000	244,010,000
Unsecured Multicurrency Revolving Lines of Credit [Member]
Line of Credit Facility [Line Items]
Multicurrency revolving line of credit	84,318,000	81,781,000
Standby LOCs issued and outstanding	(21,853,000)	(22,530,000)
Short-term borrowings	0	0
Line of credit facility, remaining borrowing capacity	62,465,000	59,251,000
Surety Bond [Member]
Line of Credit Facility [Line Items]
Unsecured surety bonds in force	271,164,000	285,754,000
Line of Credit
Line of Credit Facility [Line Items]
Long-term borrowings	0	0
Line of credit facility, remaining borrowing capacity	$ 440,941,000	$ 444,010,000