Accounts Receivable (Tables)

3 Months Ended

Mar. 31, 2021

Receivables [Abstract]

Summary of Accounts Receivable, Allowance for Credit Loss

The following table sets forth activities in our allowance for credit losses (in millions):

	Total
Balance as of December 31, 2020	$	57.3
Charges to allowance for credit losses	3.6
Write-off of uncollectible receivables	(13.8)
Recoveries of credit losses	0.4
Balance as of March 31, 2021	$	47.5