Equity - Reconciliation of Reclassifications Out of Accumulated Other Comprehensive Income (Loss), Net of Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Schedule of Reclassifications out of Accumulated Comprehensive Income (Loss) [Line Items]
Cost of sales	$ 383.1	$ 359.6	$ 409.5	$ 337.8	$ 426.1	$ 370.1	$ 404.8	$ 317.7	$ 1,490.0	$ 1,518.7	$ 1,299.4
Total before income taxes	11.3	21.2	49.9	(23.4)	(75.1)	0.8	8.7	(6.1)	59.0	(71.7)	(39.5)
Income tax provision	(2.1)	(3.1)	(3.9)	(3.3)	(3.2)	10.7	1.2	(3.9)	(12.4)	4.8	49.5
Net income (loss)	$ 9.2	$ 18.1	$ 46.0	$ (26.7)	$ (78.3)	$ 11.5	$ 9.7	$ (10.0)	46.6	(67.1)	9.4
Other expense - net									9.8	(11.5)	(6.8)
Reclassification out of Accumulated Other Comprehensive Income
Schedule of Reclassifications out of Accumulated Comprehensive Income (Loss) [Line Items]
Net income (loss)									(4.9)	(10.4)	(0.4)
Gains and Losses on Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive Income
Schedule of Reclassifications out of Accumulated Comprehensive Income (Loss) [Line Items]
Total before income taxes									(3.1)	(5.0)	(0.7)
Net income (loss)									(3.1)	(5.0)	(0.7)
Gains and Losses on Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive Income | Foreign Currency Exchange Contracts
Schedule of Reclassifications out of Accumulated Comprehensive Income (Loss) [Line Items]
Cost of sales									(3.1)	(5.0)	(0.7)
Actuarial Losses | Reclassification out of Accumulated Other Comprehensive Income
Schedule of Reclassifications out of Accumulated Comprehensive Income (Loss) [Line Items]
Other expense - net									(4.6)	(5.0)	(5.2)
Amortization of Prior Service Cost | Reclassification out of Accumulated Other Comprehensive Income
Schedule of Reclassifications out of Accumulated Comprehensive Income (Loss) [Line Items]
Other expense - net									2.8	2.7	1.3
Pension Settlement Charge | Reclassification out of Accumulated Other Comprehensive Income
Schedule of Reclassifications out of Accumulated Comprehensive Income (Loss) [Line Items]
Other expense - net										(4.5)
Pension & Postretirement | Reclassification out of Accumulated Other Comprehensive Income
Schedule of Reclassifications out of Accumulated Comprehensive Income (Loss) [Line Items]
Total before income taxes									(1.8)	(6.8)	(3.9)
Income tax provision										1.4	4.2
Net income (loss)									$ (1.8)	$ (5.4)	$ 0.3