Allowance for Doubtful Accounts (Tables)

12 Months Ended

Dec. 31, 2021

Allowance for Doubtful Accounts

Schedule of the components for allowance for doubtful accounts

The following is a summary of the components for allowance for doubtful accounts (in millions):

Balance at December 31, 2018	$	3.8
Additions		1.5
Deductions		(1.9	)
Balance at December 31, 2019		3.4
Additions		0.9
Deductions		(1.3	)
Balance at December 31, 2020		3.0
Additions		2.2
Deductions		(1.0	)
Balance at December 31, 2021	$	4.2