Comprehensive Income (Reclassification out of AOCL) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of goods sold; Selling, general and administrative expenses	$ (767.0)	$ (813.8)	$ (1,355.8)	$ (1,425.5)
non-cash pension settlement loss	(60.6)	0.0	(60.6)	0.0
Income tax benefit (expense)	(28.8)	(45.3)	(42.4)	(51.4)
Foreign currency adjustments on sale of businesses			53.2
Net of tax	0.0	(22.9)	(2.1)	(22.9)
(Losses)/Gains on Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Foreign currency adjustments on sale of businesses			3.3
Defined Benefit Plan Items [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Foreign currency adjustments on sale of businesses			47.8
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Foreign currency adjustments on sale of businesses	0.0	(22.9)	2.1	(22.9)
Reclassification out of Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net of tax	(47.8)	(22.7)	(53.2)	(20.8)
Reclassification out of Accumulated Other Comprehensive Loss [Member] | (Losses)/Gains on Cash Flow Hedges [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax benefit (expense)	0.5	(0.6)	1.0	(1.6)
Net of tax	(1.5)	2.0	(3.3)	5.6
Reclassification out of Accumulated Other Comprehensive Loss [Member] | (Losses)/Gains on Cash Flow Hedges [Member] | Commodity Futures Contracts [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of goods sold; Selling, general and administrative expenses	(2.0)	2.6	(4.3)	7.2
Reclassification out of Accumulated Other Comprehensive Loss [Member] | Defined Benefit Plan Items [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of goods sold; Selling, general and administrative expenses	(1.0)	(2.4)	(3.0)	(4.7)
Income tax benefit (expense)	15.3	0.6	15.8	1.2
Net of tax	$ (46.3)	$ (1.8)	$ (47.8)	$ (3.5)