Presentation, Summary of Significant Accounting Policies and Recent Accounting Standard Updates (Tables)

12 Months Ended

Dec. 31, 2017

Presentation, Summary of Significant Accounting Policies and Recent Accounting Standard Updates

Summary of Allowance for Doubtful Accounts

	Year Ended December 31,
(In millions)	2017		2016		2015
Balance, beginning of period	$	0.2	$	0.3	$	—
Expenses for sales returns and allowances, and uncollectible accounts, net of recoveries		0.1		(0.1)		0.3
Balance, end of period	$	0.3	$	0.2	$	0.3

Estimated Useful Lives of Related Assets

	Estimated
	Useful Lives
Buildings and improvements		5 - 33 years
Production equipment and machinery		2 - 25 years
Office furniture, equipment and other		3 - 10 years