XML 84 R67.htm IDEA: XBRL DOCUMENT v3.22.0.1
Financing Arrangements - Long-term debt (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Financing Arrangements    
Less debt issuance costs (deduction from liability) $ (3.1) $ (1.8)
Total long-term debt 141.9 198.2
Principal payments during each of the next five years and thereafter    
2022 0.0  
2023 0.0  
2024 0.0  
2025 0.0  
2026 145.0  
Line Of Credit Maturities On March 2026    
Financing Arrangements    
Total debt $ 145.0  
Line of Credit matures February 2022    
Financing Arrangements    
Total debt   200.0
Letters of credit    
Financing Arrangements    
Term of letters of credit from the date of issuance 1 year  
Principal payments during each of the next five years and thereafter    
Letters of credit outstanding $ 14.0 $ 16.2