Components of Net Periodic Benefit Cost (Detail) (USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Pension Benefits, U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service Cost	$ 10.7	$ 9.2	$ 32.0	$ 27.4
Interest Cost	19.4	17.8	58.2	53.4
Expected Return on Plan Assets	(21.9)	(17.7)	(65.7)	(52.9)
Defined Benefit Plan, Net Periodic Benefit Cost	16.1	16.6	48.1	49.8
Amortization of:
Net Actuarial Loss	8.0	7.4	24.0	22.3
Prior Service Credit	(0.1)	(0.1)	(0.4)	(0.4)
Pension Benefits, Non U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service Cost	1.1	0.9	3.5	3.4
Interest Cost	2.3	2.4	6.7	7.1
Expected Return on Plan Assets	(3.1)	(2.7)	(9.2)	(7.9)
Defined Benefit Plan, Net Periodic Benefit Cost	0.3	1.2	1.0	4.4
Amortization of:
Net Actuarial Loss	0	0.6	0	1.8
Prior Service Credit	0	0	0	0
Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service Cost	0.5	0.6	1.4	1.9
Interest Cost	2.5	2.7	7.5	8.1
Expected Return on Plan Assets	(0.2)	(0.2)	(0.5)	(0.5)
Defined Benefit Plan, Net Periodic Benefit Cost	2.2	2.5	6.5	7.6
Amortization of:
Net Actuarial Loss	0	0	0	0
Prior Service Credit	$ (0.6)	$ (0.6)	$ (1.9)	$ (1.9)