Summary of Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Schedule for Company's allowance for doubtful accounts

Changes in the Company's allowance for doubtful accounts follows:

(in millions)	2019		2018		2017
Balance as of January 1	$	5.1	$	6.5	$	3.9
Increase (decrease) to reserve	1.4		(0.5)		1.2
Amounts acquired	0.6		—		2.0
Amounts written off	(0.5)		(0.9)		(0.6)
Balance as of December 31	$	6.6	$	5.1	$	6.5

Summary of the Effects of Adopting ASC 842

Following is a summary of the effects of adopting ASC 842 on the Condensed Consolidated Balance Sheet:

	January 1, 2019
(in millions)	Balances Without Adoption		Effect of Adoption Higher/(Lower)		Balances With Adoption
Other current assets	$	75.3	$	(0.5)	$	74.8
Other long-term assets	22.9		69.6		92.5
Accrued and other current liabilities	258.0		21.4		279.4
Other long-term liabilities	266.5		47.7		314.2