Allowance for Doubtful Accounts

6 Months Ended

Jun. 30, 2020

Receivables [Abstract]

Allowance For Doubtful Accounts

6. ALLOWANCE FOR DOUBTFUL ACCOUNTS

The allowance for doubtful accounts consisted of the following (in millions):

	June 30,
	2020			2019
Balance at beginning of year	$	3.1		$	2.1
Provision charged to expense		0.1			—
Write-offs, less recoveries		(0.3	)		(0.1	)
Balance at end of period	$	2.9		$	2.0