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Commitments and Contingencies - Available Lines of Credit, Outstanding Standby Letter of Credits, and Bonds (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
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 $ 244,063 $ 235,626  
Credit Facility [Member]      
Line of Credit Facility [Line Items]      
Multicurrency revolving line of credit 500,000 500,000  
Letters of Credit Outstanding, Amount (55,937) (64,374)  
Line of Credit Facility, Remaining Borrowing Capacity 244,100    
Unsecured Multicurrency Revolving Lines of Credit [Member]      
Line of Credit Facility [Line Items]      
Multicurrency revolving line of credit 71,594 94,845  
Letters of Credit Outstanding, Amount (18,365) (19,957)  
Short-term borrowings 0 0  
Line of Credit Facility, Remaining Borrowing Capacity 53,229 74,888  
Surety Bond [Member]      
Line of Credit Facility [Line Items]      
Unsecured surety bonds in force 281,343 281,270  
Line of Credit [Member]      
Line of Credit Facility [Line Items]      
Long-term Line of Credit 0 0  
Line of Credit Facility, Remaining Borrowing Capacity $ 444,063 $ 435,626