Other Expense Restructuring and Related Charges (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Restructuring Cost and Reserve [Line Items]
Severance charges	$ 0.0	$ 7.9	$ 8.9
Asset impairment charges, trademark		10.0	10.0
Asset impairment charges, patent and equipment		5.0	7.3
Other restructuring costs			0.2
Restructuring and related charges		22.9	26.4
Restructuring Reserve [Roll Forward]
Balance, December 31, 2016	5.9
Charges	0.0	$ 22.9
Cash payments	(1.1)
Non-cash asset-write-downs	0.0
Balance, March 31, 2017	4.8		5.9
Severance and benefits [Member]
Restructuring Reserve [Roll Forward]
Balance, December 31, 2016	5.9
Charges	0.0
Cash payments	(1.1)
Non-cash asset-write-downs	0.0
Balance, March 31, 2017	4.8		5.9
Asset-Related Charges [Member]
Restructuring Reserve [Roll Forward]
Balance, December 31, 2016	0.0
Charges	0.0
Cash payments	0.0
Non-cash asset-write-downs	0.0
Balance, March 31, 2017	0.0		0.0
Asset-related charges [Member]
Restructuring Reserve [Roll Forward]
Balance, December 31, 2016	0.0
Charges	0.0
Cash payments	0.0
Non-cash asset-write-downs	0.0
Balance, March 31, 2017	$ 0.0		$ 0.0