Trade Accounts Receivable and Allowance (Tables)

6 Months Ended

Jun. 30, 2020

Receivables [Abstract]

Trade Accounts Receivable Allowance for doubtful Accounts Rollforward

The following table shows changes to our allowance for doubtful accounts for the three and six months ended June 30, 2020. Excluded from the amounts below is the portion of the allowance recorded for revenue adjustments, as that portion is not credit-related nor due to a customer’s inability to meet its financial obligations.

	Three Months Ended		Six Months Ended
(in millions)	June 30, 2020
Balance at beginning of period	$	1.0	$	0.9
Charges to expense	0.8		1.1
Write-offs	(0.4)		(0.7)
Recoveries	—		0.1
Balance at end of period	$	1.4	$	1.4