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Leases - Schedule of Future Minimum Payments Under Non-Cancelable Operating Leases (Detail)
$ in Millions
Dec. 31, 2015
USD ($)
Leases [Abstract]  
2016 $ 10.3
2017 9.2
2018 7.1
2019 5.9
2020 3.3
Thereafter 4.4
Total $ 40.2