Segment Information (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments			2
Number of operating segments which do not meet reportable unit quantitative threshold			3
Net Sales	$ 3,501.1	$ 3,266.1	$ 9,570.3	$ 9,024.4
Income (loss) from operations	204.6	184.7	562.1	508.7
Depreciation and amortization expense	(59.9)	(51.8)	(165.0)	(155.9)
Corporate [Member]
Segment Reporting Information [Line Items]
Net Sales	1,724.5	1,622.7	5,059.8	4,784.5
Income (loss) from operations	115.1	103.2	355.8	323.9
Depreciation and amortization expense	(24.0)	(24.1)	(72.1)	(72.3)
Public [Member]
Segment Reporting Information [Line Items]
Net Sales	1,468.1	1,468.8	3,848.2	3,710.3
Income (loss) from operations	106.9	101.3	261.2	244.1
Depreciation and amortization expense	(10.9)	(10.9)	(32.8)	(32.8)
Other [Member]
Segment Reporting Information [Line Items]
Net Sales	308.5	174.6	662.3	529.6
Income (loss) from operations	10.0	8.5	29.8	22.7
Depreciation and amortization expense	(8.8)	(2.2)	(13.3)	(6.5)
Headquarters [Member]
Segment Reporting Information [Line Items]
Net Sales	0.0	0.0	0.0	0.0
Income (loss) from operations	(27.4)	(28.3)	(84.7)	(82.0)
Depreciation and amortization expense	$ (16.2)	$ (14.6)	$ (46.8)	$ (44.3)