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Leases and Rentals - Future Minimum Operating Lease Payments Under Non-Cancellable Operating Leases (Detail)
$ in Millions
Dec. 31, 2016
USD ($)
Leases [Abstract]  
2017 $ 22.8
2018 21.0
2019 18.4
2020 16.1
2021 15.4
2022 and thereafter 63.0
Total minimum lease payments $ 156.7