Pensions and Other Postretirement Benefits Net Periodic Benefit Cost (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Pension Benefits, U.S. Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service Cost	$ 14.9	$ 12.2
Interest Cost	21.9	21.1
Expected Return on Plan Assets	(25.5)	(22.2)
Amortization of Net Actuarial Loss	14.6	11.5
Amortization of Prior Service Credit	0	(0.1)
Total	25.9	22.5
Pension Benefits, Non U.S. Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service Cost	1.1	1.2
Interest Cost	2.1	2.1
Expected Return on Plan Assets	(3.0)	(2.7)
Amortization of Net Actuarial Loss	0.3	0.1
Amortization of Prior Service Credit	0	0
Total	0.5	0.7
Other Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service Cost	0.2	0.4
Interest Cost	2.0	2.4
Expected Return on Plan Assets	(0.2)	(0.2)
Amortization of Net Actuarial Loss	0	0
Amortization of Prior Service Credit	(1.2)	(0.6)
Total	$ 0.8	$ 2.0