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Accounts Receivable (Tables)
12 Months Ended
Dec. 31, 2021
Receivables [Abstract]  
Schedule of allowance for bad debt
The following table sets forth activities in our allowance for expected credit losses (in millions):
202120202019
Balance as of January 1, (1)
$57.3 $46.6 $39.4 
Charges to allowance for credit losses6.3 63.7 25.9 
Write-off of uncollectible receivables(35.3)(53.7)(32.2)
Recoveries of credit losses1.4 1.0 2.4 
Translation adjustments0.1 (0.3)— 
Balance as of December 31,$29.8 $57.3 $35.5 
(1)For 2020, the balance as of the beginning of the period includes the $11.1 million cumulative transition adjustment related to the implementation of ASU 2016-13.