Annual report pursuant to Section 13 and 15(d)

Long-Term Debt - Annual Scheduled Principal Payments of Debt (Detail)

v3.8.0.1
Long-Term Debt - Annual Scheduled Principal Payments of Debt (Detail)
$ in Millions
Dec. 31, 2017
USD ($)
Debt Disclosure [Abstract]  
2018 $ 102.4
2019 1,250.0
2020 97.9
2021 97.5
2022 97.5
Thereafter 739.4
Total $ 2,384.7