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Commitments and Contingencies - Available Lines of Credit, Outstanding Standby Letter of Credits, and Bonds (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Oct. 18, 2019
Line of Credit Facility [Line Items]      
Multicurrency revolving line of credit     $ 500,000
Net available for additional standby LOCs under sub-facility $ 253,244 $ 240,941  
Credit Facility [Member]      
Line of Credit Facility [Line Items]      
Multicurrency revolving line of credit 500,000 500,000  
Letters of Credit Outstanding, Amount (46,756) (59,059)  
Line of Credit Facility, Remaining Borrowing Capacity 253,200    
Unsecured Multicurrency Revolving Lines of Credit [Member]      
Line of Credit Facility [Line Items]      
Multicurrency revolving line of credit 93,562 84,318  
Letters of Credit Outstanding, Amount (20,377) (21,853)  
Short-term borrowings 0 0  
Line of Credit Facility, Remaining Borrowing Capacity 73,185 62,465  
Surety Bond [Member]      
Line of Credit Facility [Line Items]      
Unsecured surety bonds in force 247,358 271,164  
Line of Credit [Member]      
Line of Credit Facility [Line Items]      
Long-term Line of Credit 0 0  
Line of Credit Facility, Remaining Borrowing Capacity $ 453,244 $ 440,941