Change in Projected Benefit Obligation (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
U.S. Plan
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Beginning Balance	$ 1,091.5	$ 919.7
Service Cost	37.8	32.7	$ 30.3
Interest Cost	44.7	44.4	42.1
Actuarial (Gain) Loss	(93.7)	153.1
Benefits Paid	(73.8)	(58.4)
Foreign Exchange Rate Changes	0.0	0.0
Ending Balance	1,006.5	1,091.5	919.7
Non U.S. Plans
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Beginning Balance	184.6	164.7
Service Cost	0.0	0.0	0.0
Interest Cost	5.7	6.9	6.6
Actuarial (Gain) Loss	(12.0)	33.2
Benefits Paid	(9.4)	(6.6)
Foreign Exchange Rate Changes	(12.4)	(13.6)
Ending Balance	156.5	184.6	164.7
Supplemental Plan
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Beginning Balance	123.0	101.5
Service Cost	3.6	3.1	1.6
Interest Cost	5.0	4.8	4.4
Actuarial (Gain) Loss	(8.1)	23.1
Benefits Paid	(9.6)	(9.5)
Foreign Exchange Rate Changes	0.0	0.0
Ending Balance	$ 113.9	$ 123.0	$ 101.5