Amounts Included in Accumulated Other Comprehensive Income (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
U.S. Plan
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net Actuarial Loss	$ 382.9	$ 310.7
Prior Service Cost	(3.1)	(3.5)
Gross Amount in Accumulated Other Comprehensive Income	379.8	307.2
Income Tax Effect	143.3	119.5
Net Amount in Accumulated Other Comprehensive Income	236.5	187.7
Non U.S. Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net Actuarial Loss	60.5	40.9
Gross Amount in Accumulated Other Comprehensive Income	60.5	40.9
Income Tax Effect	6.3	4.8
Net Amount in Accumulated Other Comprehensive Income	54.2	36.1
Supplemental Plan
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net Actuarial Loss	81.5	64.2
Prior Service Cost	1.1	1.6
Gross Amount in Accumulated Other Comprehensive Income	82.6	65.8
Income Tax Effect	30.9	25.6
Net Amount in Accumulated Other Comprehensive Income	$ 51.7	$ 40.2