Business Segments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Business Segments [Abstract]
Number of business segments			3
Segment Reporting Information [Line Items]
Revenues	$ 2,218.3	$ 1,685.9	$ 6,076.3	$ 4,928.2
Income (loss) before income taxes	269.8	198.0	664.7	525.3
DPS [Member]
Segment Reporting Information [Line Items]
Revenues	1,279.7	977.2	3,477.6	2,845.5
Income (loss) before income taxes	198.8	196.6	510.2	474.3
V&M [Member]
Segment Reporting Information [Line Items]
Revenues	536.0	434.4	1,585.5	1,200.8
Income (loss) before income taxes	105.6	81.5	309.3	212.2
PCS [Member]
Segment Reporting Information [Line Items]
Revenues	402.6	274.3	1,013.2	881.9
Income (loss) before income taxes	41.7	24.0	79.2	88.5
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Income (loss) before income taxes	$ (76.3)	$ (104.1)	$ (234.0)	$ (249.7)