Other Expense Restructuring and Related Charges (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Payments to Acquire Property, Plant, and Equipment	$ 126.4	$ 104.7	$ 130.8
Severance charges	2.6	3.1	0.0
Other restructuring charges	2.0	3.8	0.0
Restructuring Reserve [Roll Forward]
Balance, December 31, 2017	3.3
Charges	4.9	9.1	0.0
Non-cash asset write-downs	(2.3)	(2.2)	$ (0.7)
Balance, December 31, 2018	1.5	3.3
Severance and benefits [Member]
Restructuring Reserve [Roll Forward]
Balance, December 31, 2017	2.3
Charges	2.6
Cash payments	(3.5)
Non-cash asset write-downs	0.0
Balance, December 31, 2018	1.4	2.3
Asset-related charges [Member]
Restructuring Reserve [Roll Forward]
Balance, December 31, 2017	0.0
Charges	0.3
Cash payments	0.0
Non-cash asset write-downs	(0.3)
Balance, December 31, 2018	0.0	0.0
Other charges [Member]
Restructuring Reserve [Roll Forward]
Balance, December 31, 2017	0.0
Charges	2.0
Cash payments	0.0
Non-cash asset write-downs	(2.0)
Balance, December 31, 2018	0.0	0.0
2018 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	4.9
Severance charges	2.6
Asset impairment charges, patent and equipment	0.3
Other restructuring charges	2.0
Restructuring Reserve [Roll Forward]
Balance, December 31, 2017	2.3
Charges	4.9
Cash payments	(3.5)
Non-cash asset write-downs	(2.3)
Balance, December 31, 2018	1.4	$ 2.3
2016 Restructuring Plan [Member] [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0.3
Restructuring Reserve [Roll Forward]
Balance, December 31, 2018	0.1
Maximum [Member] | 2018 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	$ 16.0