Restructuring Charges (Tables)

12 Months Ended

Dec. 31, 2016

February 2015 Restructuring Plan

Schedule of the components of restructuring liability

(in millions)	Severance		Facilities		Other costs		Total
Balance, December 31, 2015	$	—	$	—	$	—	$	—
Provision for restructuring charges		—		0.2		—		0.2
Cash payments		—		(0.2)		—		(0.2)
Balance, December 31, 2016	$	—	$	—	$	—	$	—

October 2015 Restructuring Plan

Schedule of the components of restructuring liability

(in millions)	Severance		Facilities		Other costs		Total
Balance, December 31, 2015	$	0.4	$	—	$	—	$	0.4
Provision for restructuring charges		2.4		3.2		—		5.6
Cash payments		(2.7)		(3.2)		—		(5.9)
Balance, December 31, 2016	$	0.1	$	—	$	—	$	0.1