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Long-Term Debt and Short-Term Borrowings - Additional Information (Detail)
$ in Thousands
Dec. 31, 2018
USD ($)
Debt Disclosure [Abstract]  
Future annual aggregate maturities, 2019 $ 1,331,907
Future annual aggregate maturities, 2020 536
Future annual aggregate maturities, 2021 0
Future annual aggregate maturities, 2022 300,000
Future annual aggregate maturities, 2023 458,452
Future annual aggregate maturities, thereafter $ 1,025,000