Comprehensive Income (Reclassification out of AOCL) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Cost of goods sold; Selling, general and administrative expenses	$ (761.3)	$ (704.2)	$ (1,343.8)	$ (1,235.8)
Income tax (expense)/benefit	(50.9)	(42.9)	(60.7)	(55.9)
Reclassification out of Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net of tax	0.5	(3.1)	1.3	(7.4)
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 (expense)/benefit	(1.0)	1.2	(2.1)	2.9
Net of tax	1.8	(2.2)	3.8	(5.3)
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	2.8	(3.4)	5.9	(8.2)
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	(1.9)	(1.4)	(3.6)	(3.1)
Income tax (expense)/benefit	0.6	0.5	1.1	1.0
Net of tax	$ (1.3)	$ (0.9)	$ (2.5)	$ (2.1)