Components of Company's Net Periodic Benefit Cost (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
U.S. Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service Cost	$ 8.9	$ 10.7	$ 26.5	$ 32.1
Interest Cost	10.3	10.2	31.1	30.6
Expected Return on Plan Assets	(21.7)	(19.7)	(65.3)	(59.1)
Amortization
Net Actuarial (Gain) Loss	8.6	6.5	25.8	19.5
Prior Service Cost	(0.1)	0.4	(0.3)	1.2
Net Periodic Benefit Expense (Benefit)	6.0	8.1	17.8	24.3
Non U.S. Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Interest Cost	1.6	1.6	4.7	4.9
Expected Return on Plan Assets	(1.7)	(2.1)	(4.9)	(6.2)
Amortization
Net Actuarial (Gain) Loss	0.2	0.1	0.6	0.1
Net Periodic Benefit Expense (Benefit)	0.1	(0.4)	0.4	(1.2)
Supplemental Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service Cost	0.8	0.8	2.2	2.4
Interest Cost	1.2	1.1	3.4	3.3
Amortization
Net Actuarial (Gain) Loss	1.5	1.4	4.5	4.2
Prior Service Cost	0.2	0.1	0.4	0.3
Net Periodic Benefit Expense (Benefit)	3.7	3.4	10.5	10.2
Other Postretirement Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service Cost	0.1	0.1	0.2	0.3
Interest Cost	0.3	0.7	1.0	2.1
Amortization
Net Actuarial (Gain) Loss	(0.7)	0.4	(1.6)	1.2
Prior Service Cost	(1.2)	(1.3)	(3.8)	(3.9)
Net Periodic Benefit Expense (Benefit)	$ (1.5)	$ (0.1)	$ (4.2)	$ (0.3)