Change in Projected Benefit Obligation (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
U.S. Plan
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Beginning Balance	$ 1,006.5	$ 1,091.5
Service Cost	37.4	37.8	$ 32.7
Interest Cost	45.8	44.7	44.4
Actuarial (Gain) Loss	31.5	(93.7)
Settlement	0.0	0.0
Benefits Paid	(58.5)	(73.8)
Foreign Exchange Rate Changes	0.0	0.0
Ending Balance	1,062.7	1,006.5	1,091.5
Non U.S. Plans
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Beginning Balance	156.5	184.6
Service Cost	0.0	0.0	0.0
Interest Cost	4.7	5.7	6.9
Actuarial (Gain) Loss	26.0	(12.0)
Settlement	(7.3)	0.0
Benefits Paid	(2.4)	(9.4)
Foreign Exchange Rate Changes	(21.6)	(12.4)
Ending Balance	155.9	156.5	184.6
Supplemental Plan
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Beginning Balance	113.9	123.0
Service Cost	3.5	3.6	3.1
Interest Cost	5.1	5.0	4.8
Actuarial (Gain) Loss	7.4	(8.1)
Settlement	0.0	0.0
Benefits Paid	(8.8)	(9.6)
Foreign Exchange Rate Changes	0.0	0.0
Ending Balance	$ 121.1	$ 113.9	$ 123.0