Restructuring Activities - Restructuring Activities (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 142.5	$ 52.2	$ 7.6
Other associated costs	34.3	4.0
Total	176.8	56.2
2011-2014 Integration and Optimization Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	144.9	52.2
Other associated costs	22.2
Total	167.1	52.2
EPC [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(1.3)	1.0
Other associated costs	12.1	4.0
Total	10.8	5.0
Other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(1.1)	(1.0)
Other associated costs
Total	$ (1.1)	$ (1.0)