Change In Plan Assets (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
U.S. Plan
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value at beginning of year	$ 1,342.0	$ 1,440.8
Actual Return on Assets	110.0	(25.0)
Employer Contributions	0.0	0.0
Settlement	0.0	0.0
Benefits Paid	(58.5)	(73.8)
Foreign Exchange Rate Changes	0.0	0.0
Fair Value at end of year	1,393.5	1,342.0
Non U.S. Plans
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair Value at beginning of year	144.3	157.6
Actual Return on Assets	21.9	1.3
Employer Contributions	4.3	4.6
Settlement	(7.3)	0.0
Benefits Paid	(2.4)	(9.4)
Foreign Exchange Rate Changes	(21.5)	(9.8)
Fair Value at end of year	$ 139.3	$ 144.3