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Debt and Financing Arrangements (Details) - USD ($)
Mar. 31, 2022
Dec. 31, 2021
Unsecured local credit facilities    
Line of Credit Facility [Line Items]    
Weighted average interest rate 0.27% 2.57%
Available borrowings $ 38,200,000  
Other short-term borrowings, outstanding borrowings 16,300,000 $ 100,000
Revolving Credit Facility    
Line of Credit Facility [Line Items]    
Outstanding borrowings $ 81,000,000 0
Weighted average interest rate 2.61%  
Available borrowings $ 306,700,000  
Letters of credit outstanding 12,300,000  
Letters of Credit    
Line of Credit Facility [Line Items]    
Outstanding borrowings 15,700,000 17,300,000
Line of credit secured 12,800,000 $ 14,300,000
Maximum commitment $ 57,100,000