Other Operating and Non-Operating Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Nonoperating Income (Expense) [Abstract]
Product line discontinuance charges	$ 1.0	$ 0.0	$ 9.0	$ 0.0
Environmental Remediation Expense	(2.0)	0.0	(2.0)	0.0
Severance Costs	(1.0)	(2.0)	(5.0)	(5.0)
Canadian wage subsidies	5.0	0.0	9.0	0.0
Standard Product Warranty Accrual, Other Operating Charges and Credits	0.0	0.0	0.0	4.0
Interest expense	(5.0)	(5.0)	(16.0)	(14.0)
Amortization of debt charges	0.0	0.0	(1.0)	(1.0)
Interest Costs Capitalized Adjustment	0.0		0.0	(1.0)
Capitalized Interest Cost, net of reversals		(1.0)
Interest Expense	(5.0)	(6.0)	(17.0)	(14.0)
Interest Income	0.0	2.0	1.0	8.0
Marketable Securities, Gain (Loss)	0.0	0.0	3.0	0.0
SERP market adjustments	0.0	0.0	(1.0)	(1.0)
Investment income	0.0	2.0	3.0	9.0
Net periodic pension cost, excluding service cost	0.0	(1.0)	(1.0)	(2.0)
Gain on acquisition of controlling interest	0.0	0.0	0.0	14.0
Foreign currency gain (loss)	0.0	0.0	5.0	(4.0)
Total non-operating income (expense)	0.0	(1.0)	4.0	8.0
Severance costs related to curtailment	0.0	(2.0)	0.0	(3.0)
Non Cash Other Operating Charges And Credits	0.0	0.0	2.0	1.0
Other Operating Charges And Credits, Net	$ 3.0	$ (3.0)	$ (5.0)	$ (2.0)