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Leases and Rentals - Future Minimum Operating Lease Payments Under Non-Cancellable Operating Leases (Detail)
$ in Millions
Dec. 31, 2018
USD ($)
Leases [Abstract]  
2018 $ 22.2
2019 16.8
2020 12.6
2021 10.2
2022 8.1
2023 and thereafter 46.4
Total minimum lease payments $ 116.3