Change in Projected Benefit Obligation (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
U.S. Plan
Schedule of Defined Benefit Plan Change in Benefit Obligation [Line Items]
Beginning Balance	$ 919.7	$ 1,030.4
Service Cost	32.7	30.3	35.3
Interest Cost	44.4	42.1	41.4
Actuarial (Gain) Loss	153.1	(125.4)
Benefits Paid	(58.4)	(57.7)
Ending Balance	1,091.5	919.7	1,030.4
Non U.S. Plans
Schedule of Defined Benefit Plan Change in Benefit Obligation [Line Items]
Beginning Balance	164.7	158.1
Interest Cost	6.9	6.6	6.2
Actuarial (Gain) Loss	33.2	0.4
Benefits Paid	(6.6)	(5.0)
Foreign Exchange Rate Changes	(13.6)	4.6
Ending Balance	184.6	164.7	158.1
Supplemental Plan
Schedule of Defined Benefit Plan Change in Benefit Obligation [Line Items]
Beginning Balance	101.5	106.4
Service Cost	3.1	1.6	3.0
Interest Cost	4.8	4.4	4.5
Actuarial (Gain) Loss	23.1	(0.5)
Benefits Paid	(9.5)	(10.4)
Ending Balance	$ 123.0	$ 101.5	$ 106.4