Retirement Benefits Net Periodic Benefit Cost (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 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	$ 29.8	$ 24.4
Interest Cost	21.8	21.1	43.7	42.2
Expected Return on Plan Assets	(25.8)	(22.1)	(51.3)	(44.3)
Amortization of Net Actuarial Loss	12.5	11.4	27.1	22.9
Amortization of Prior Service Credit	0	(0.2)	0	(0.3)
Defined Benefit Plan, Curtailments	0.7	0	0.7	0
Total	24.1	22.4	50.0	44.9
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	2.2	2.4
Interest Cost	2.1	2.1	4.2	4.2
Expected Return on Plan Assets	(3.0)	(2.8)	(6.0)	(5.5)
Amortization of Net Actuarial Loss	0.4	0.2	0.7	0.3
Amortization of Prior Service Credit	0	0	0	0
Defined Benefit Plan, Curtailments	0	0	0	0
Total	0.6	0.7	1.1	1.4
Other Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service Cost	0.2	0.4	0.4	0.8
Interest Cost	2.0	2.4	4.0	4.8
Expected Return on Plan Assets	(0.1)	(0.1)	(0.3)	(0.3)
Amortization of Net Actuarial Loss	0	0	0	0
Amortization of Prior Service Credit	(1.3)	(0.7)	(2.5)	(1.3)
Defined Benefit Plan, Curtailments	0	0	0	0
Total	$ 0.8	$ 2.0	$ 1.6	$ 4.0