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1. Basis of Presentation and Use of Estimates Accounts Receivables Allowance for Credit Loss (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]        
Accounts Receivable, Allowance for Credit Loss $ 15.2 $ 12.9 $ 15.0 $ 15.1
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) 0.5 (1.8)    
Allowance for Loan and Lease Losses, Write-offs (0.4) (0.5)    
Accounts Receivable, Allowance for Credit Loss, Recovery $ 0.1 $ 0.1