Accumulated Other Comprehensive (Loss) - Reclassifications Out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of Sales	$ 1,278.3	$ 1,239.8
Other Expense, Net	6.5	1.2
Prior Service Credits	(151.6)	(0.1)
Total before Tax	25.3	(98.9)
Tax Expense	(5.4)	21.0
Net of Tax	19.8	$ (78.1)
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net of Tax	120.9
Reclassification out of Accumulated Other Comprehensive Income | Derivatives Instruments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before Tax	(2.6)
Tax Expense	0.5
Net of Tax	(2.1)
Reclassification out of Accumulated Other Comprehensive Income | Derivatives Instruments | Commodity Contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of Sales	(3.1)
Reclassification out of Accumulated Other Comprehensive Income | Derivatives Instruments | Foreign Currency Contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other Expense, Net	(0.4)
Reclassification out of Accumulated Other Comprehensive Income | Derivatives Instruments | Interest Rate Swap Agreements
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest Expense, Net	0.9
Reclassification out of Accumulated Other Comprehensive Income | Pension and Postretirement Benefit Plans | Pension Benefit Plans
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Prior Service Costs	0.0
Actuarial (Losses) Gains	154.1
Total before Tax	154.1
Tax Expense	(30.7)
Net of Tax	123.4
Reclassification out of Accumulated Other Comprehensive Income | Pension and Postretirement Benefit Plans | Postretirement Benefits Plan
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Prior Service Credits	(0.1)
Actuarial (Losses) Gains	(0.4)
Total before Tax	(0.5)
Tax Expense	0.1
Net of Tax	$ (0.4)