Changes in Projected Benefit Obligation Amount (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Pension Benefits, U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Benefit Obligation at Beginning of Year	$ 1,579.8	$ 1,352.7
Service Cost	48.8	42.7	36.5
Interest Cost	84.4	77.6	71.1
Plan Participant Contributions	0	0
Actuarial (Gain) Loss	291.4	138.4
Benefits and Expenses Paid	(36.5)	(31.6)
Plan Amendments	0	0
Curtailment	0	0
Change in Foreign Exchange Rates	0	0
Benefit Obligation at End of Year	1,967.9	1,579.8	1,352.7
Accumulated Benefit Obligation at December 31	1,822.3	1,462.2
Fair Value of Plan Assets at Beginning of Year	1,170.8	1,179.6
Actual Return on Plan Assets	161.8	18.5
Employer Contributions	57.5	4.3
Plan Participant Contributions	0	0
Benefits and Expenses Paid	(36.5)	(31.6)
Change in Foreign Exchange Rates	0	0
Fair Value of Plan Assets at End of Year	1,353.6	1,170.8	1,179.6
Underfunded (Overfunded) Status	614.3	409.0
Pension Benefits, Non U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Benefit Obligation at Beginning of Year	170.4	152.9
Service Cost	4.2	4.8	4.9
Interest Cost	8.5	8.8	9.5
Plan Participant Contributions	0	0
Actuarial (Gain) Loss	9.4	9.3
Benefits and Expenses Paid	(3.9)	(4.1)
Plan Amendments	0	0
Curtailment	0	0
Change in Foreign Exchange Rates	8.8	(1.3)
Benefit Obligation at End of Year	197.4	170.4	152.9
Accumulated Benefit Obligation at December 31	187.3	160.9
Fair Value of Plan Assets at Beginning of Year	188.0	176.0
Actual Return on Plan Assets	8.6	12.5
Employer Contributions	4.1	4.7
Plan Participant Contributions	0	0
Benefits and Expenses Paid	(3.9)	(4.1)
Change in Foreign Exchange Rates	8.8	(1.1)
Fair Value of Plan Assets at End of Year	205.6	188.0	176.0
Underfunded (Overfunded) Status	(8.2)	(17.6)
Other Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Benefit Obligation at Beginning of Year	190.9	185.1
Service Cost	1.6	1.9	2.6
Interest Cost	9.6	10.0	10.8
Plan Participant Contributions	3.5	3.4
Actuarial (Gain) Loss	19.1	5.6
Benefits and Expenses Paid	(16.7)	(15.1)
Plan Amendments	(5.0)	0
Curtailment	(4.2)	0
Change in Foreign Exchange Rates	0	0
Benefit Obligation at End of Year	198.8	190.9	185.1
Fair Value of Plan Assets at Beginning of Year	11.7	11.9
Actual Return on Plan Assets	0.3	0.2
Employer Contributions	12.7	11.3
Plan Participant Contributions	3.5	3.4
Benefits and Expenses Paid	(16.7)	(15.1)
Change in Foreign Exchange Rates	0	0
Fair Value of Plan Assets at End of Year	11.5	11.7	11.9
Underfunded (Overfunded) Status	$ 187.3	$ 179.2