Restructuring (Tables)

12 Months Ended

Dec. 31, 2017

Restructuring and Related Activities [Abstract]

Summary of Restructuring Charges for Ongoing Activities

The following table details the amounts reported in Restructuring expense on the consolidated statement of income since the implementation of these plans: 

	Cumulative Amount		For the Quarter Ended								Cumulative Amount
(In millions)	As of December 31, 2016		March 31, 2017		June 30, 2017		September 30, 2017		December 31, 2017		As of December 31, 2017
Severance and related expense	$	6.1	$	0.5	$	0.1	$	—	$	—	$	6.7
Other	6.2		0.2		0.6		0.3		0.6		7.9
Total restructuring charges	$	12.3	$	0.7	$	0.7	$	0.3	$	0.6	$	14.6

Schedule of Restructuring Reserve Activity

The table below details the activity in 2017:

(In millions)	Balance as of December 31, 2016		Charged to Earnings		Payments Made			Release of Liability			Balance as of December 31, 2017
Severance and related expense	$	8.3	$	0.5	$	(4.9	)	$	(0.7	)	$	3.2
Other	0.6		1.8		(2.4		)	—			—
Total	$	8.9	$	2.3	$	(7.3	)	$	(0.7	)	$	3.2