Trade and Other Receivables, Net (Tables)

12 Months Ended

Dec. 31, 2021

Receivables [Abstract]

Schedule of Trade and Other Receivables, Net

Trade and other receivables, net, consist of the following:

	December 31,
	2021			2020
	(Dollars in millions)
Trade receivables from customers	$	130.3		$	95.1
Interest receivable from invested customer funds		3.2			1.8
Other		20.7			11.7
Total gross receivables		154.2			108.6
Less: reserve for sales adjustments		(4.0	)		(4.4	)
Less: allowance for doubtful accounts		(3.9	)		(3.1	)
Trade and other receivables, net	$	146.3		$	101.1

Activity Related to Allowance for Doubtful Accounts

The activity related to the allowance for doubtful accounts was as follows:

	Year Ended December 31,
	2021			2020			2019
	(Dollars in millions)
Balance at beginning of year	$	3.1		$	2.4		$	1.3
Provision for doubtful accounts		1.8			2.0			3.2
Charge-offs, net of recoveries		(1.0	)		(1.3	)		(2.1	)
Balance at end of year	$	3.9		$	3.1		$	2.4