Pensions and Other Postretirement Benefits Net Periodic Benefit Cost (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Amortization of Actuarial Loss	$ (11.6)	$ (8.0)
Pension Benefits, U.S. Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service Cost	12.2	10.6
Interest Cost	21.1	19.4
Expected Return on Plan Assets	(22.2)	(21.9)
Amortization of Actuarial Loss	11.5	8.0
Amortization of Prior Service Credit	(0.1)	(0.1)
Total	22.5	16.0
Pension Benefits, Non U.S. Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service Cost	1.2	1.2
Interest Cost	2.1	2.2
Expected Return on Plan Assets	(2.7)	(3.1)
Amortization of Actuarial Loss	0.1	0
Amortization of Prior Service Credit	0	0
Total	0.7	0.3
Other Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service Cost	0.4	0.5
Interest Cost	2.4	2.5
Expected Return on Plan Assets	(0.2)	(0.2)
Amortization of Actuarial Loss	0	0
Amortization of Prior Service Credit	(0.6)	(0.6)
Total	$ 2.0	$ 2.2