Accumulated Other Comprehensive (Loss) - Reclassifications Out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of Sales	$ 1,442.2	$ 1,315.2	$ 4,069.4	$ 3,820.0
Other Expense, Net	1.1	4.2	2.2	7.1
Prior Service Credits	0.2	0.0	(150.8)	(0.1)
Total before Tax	87.3	86.8	146.7	294.6
Tax Expense	8.3	16.9	21.2	60.9
Net of Tax	$ 79.3	$ 70.0	126.2	$ 234.2
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net of Tax			(122.2)
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			(6.8)
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			(0.9)
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			5.1
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]
Actuarial (Losses) Gains			156.6
Total before Tax			(156.6)
Tax Expense			(31.1)
Net of Tax			(125.5)
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			(0.2)
Actuarial (Losses) Gains			(1.3)
Total before Tax			1.5
Tax Expense			0.3
Net of Tax			$ 1.2