Changes In Accumulated Other Comprehensive Loss - Reclassifications out of AOCI (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cost of Sales	$ 5,067.5	$ 5,077.0	$ 3,696.1
Other Expense, Net	9.2	7.2	3.0
Total before Tax	(353.5)	(347.8)	(253.0)
Tax Expense	20.4	11.8	(321.7)
Total, Net of Tax	(333.5)	$ (337.2)	$ (576.4)
Amount Reclassified from Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total, Net of Tax	45.1
Amount Reclassified from Accumulated Other Comprehensive Loss | Derivatives Instruments:
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total, Net of Tax	(1.7)
Amount Reclassified from Accumulated Other Comprehensive Loss | Derivatives Instruments: | Commodity Contract
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cost of Sales	(1.8)
Amount Reclassified from Accumulated Other Comprehensive Loss | Derivatives Instruments: | Foreign currency contracts
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Expense, Net	(1.3)
Amount Reclassified from Accumulated Other Comprehensive Loss | Derivatives Instruments: | Interest rate contracts
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest Expense, Net	1.4
Amount Reclassified from Accumulated Other Comprehensive Loss | Amortization of Defined Benefit Pension Plans: | Pension Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Prior Service Costs (Credits)	0.2
Actuarial Losses (Gains)	49.2
Total before Tax	49.4
Tax Expense	0.0
Total, Net of Tax	49.4
Amount Reclassified from Accumulated Other Comprehensive Loss | Amortization of Defined Benefit Pension Plans: | Posretirement Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Prior Service Costs (Credits)	(0.3)
Actuarial Losses (Gains)	(2.3)
Total, Net of Tax	$ (2.6)