Benefit Plans - Expected Future Services to Be Paid by Plans (Detail) $ in Millions	Dec. 31, 2015 USD ($)
U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
2016	$ 12.6
2017	13.4
2018	16.0
2019	18.5
2020	19.4
Thereafter	112.0
Non-US Pension Plans
Defined Benefit Plan Disclosure [Line Items]
2016	14.4
2017	15.8
2018	16.8
2019	18.3
2020	19.7
Thereafter	103.2
Other Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
2016	3.3
2017	3.2
2018	3.2
2019	3.1
2020	3.0
Thereafter	$ 13.4