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Debt - Future Maturities of Long-Term Debt (Detail)
$ in Millions
Mar. 31, 2020
USD ($)
Maturities of Long-term Debt [Abstract]  
2021 $ 500
2022 700
2023 500
2024 800
Thereafter 3,425
Long Term Debt Maturities Repayments Of Principal Total $ 5,925