Benefit Plans - Expected Future Services to Be Paid by Plans (Detail) $ in Millions	Dec. 31, 2016 USD ($)
U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
2016	$ 13.9
2017	16.2
2018	18.5
2019	19.3
2020	19.3
Thereafter	113.4
Non-US Pension Plans
Defined Benefit Plan Disclosure [Line Items]
2016	4.3
2017	4.6
2018	5.5
2019	7.3
2020	5.2
Thereafter	33.1
Other Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
2016	3.1
2017	3.1
2018	3.1
2019	3.0
2020	2.9
Thereafter	$ 12.5