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Receivables, net (Notes)
6 Months Ended
Jun. 30, 2022
Receivables, Net, Current [Abstract]  
Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Receivables
Receivables consist of:
June 30, 2022December 31, 2021
Trade accounts receivable$178.0 $154.1 
Allowance for current expected credit losses(1.2)(1.4)
Unbilled receivables5.3 7.2 
Taxes receivable4.0 6.1 
Other1.1 1.4 
$187.3 $167.4