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Debt - Debt Outstanding Matures on Calendar Year Basis (Detail)
$ in Millions
Jun. 30, 2020
USD ($)
Debt Disclosure [Abstract]  
Q3 - Q4 2020 $ 74.0
2021 103.8
2022 88.3
2023 336.5
2024 0.0
2025 19.3
Thereafter 400.0
Total debt $ 1,021.9