Estimated Future Benefit Payments (Detail) $ in Millions	Dec. 31, 2015 USD ($)
U.S. Plan
Schedule of Pension Expected Future Benefit Payments [Line Items]
2016	$ 68.0
2017	67.8
2018	69.2
2019	70.8
2020	69.1
2021-2025	345.6
Non U.S. Plans
Schedule of Pension Expected Future Benefit Payments [Line Items]
2016	2.3
2017	2.5
2018	2.9
2019	3.0
2020	3.3
2021-2025	21.4
Supplemental Plan
Schedule of Pension Expected Future Benefit Payments [Line Items]
2016	9.6
2017	12.0
2018	11.7
2019	13.0
2020	11.6
2021-2025	$ 55.6