Business Segments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Business Segments [Abstract]
Number of business segments	3
Segment Reporting Information [Line Items]
Revenues	$ 2,117.7	$ 1,804.3
Income (loss) before income taxes	182.9	171.8
DPS [Member]
Segment Reporting Information [Line Items]
Revenues	1,269.0	1,042.1
Income (loss) before income taxes	154.4	135.3
V&M [Member]
Segment Reporting Information [Line Items]
Revenues	521.5	491.2
Income (loss) before income taxes	113.4	92.6
PCS [Member]
Segment Reporting Information [Line Items]
Revenues	327.2	271.0
Income (loss) before income taxes	22.0	10.6
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Income (loss) before income taxes	$ (106.9)	$ (66.7)