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Debt - Schedule of Contractual Maturities of Debt Obligations (Detail)
$ in Millions
Sep. 30, 2021
USD ($)
Maturities Of Long Term Debt [Abstract]  
2021 (remaining) $ 2.2
2022 9.0
2023 9.0
2024 9.0
2025 9.0
2026 $ 788.5