Segment Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Segment Information [Line Items]
Number of Reportable Segments			2
Number of operating segments which do not meet reportable unit quantitative threshold			2
Net sales	$ 2,779.3	$ 2,584.7	$ 5,191.0	$ 4,903.9
Income (loss) from operations	153.6	136.4	273.7	240.0
Depreciation and amortization expense	(52.3)	(53.2)	(104.3)	(105.7)
Corporate [Member]
Segment Information [Line Items]
Net sales	1,537.4	1,394.4	2,941.3	2,757.2
Income (loss) from operations	103.2	92.3	197.3	177.1
Depreciation and amortization expense	(24.4)	(24.4)	(48.8)	(48.7)
Public [Member]
Segment Information [Line Items]
Net sales	1,082.6	1,040.4	1,929.4	1,858.0
Income (loss) from operations	69.1	66.1	114.7	108.2
Depreciation and amortization expense	(11.0)	(11.0)	(22.1)	(22.0)
Other [Member]
Segment Information [Line Items]
Net sales	159.3	149.9	320.3	288.7
Income (loss) from operations	8.9	5.0	14.9	7.5
Depreciation and amortization expense	(2.2)	(2.4)	(4.5)	(4.7)
Headquarters [Member]
Segment Information [Line Items]
Net sales	0	0	0	0
Income (loss) from operations	(27.6)	(27.0)	(53.2)	(52.8)
Depreciation and amortization expense	$ (14.7)	$ (15.4)	$ (28.9)	$ (30.3)