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Debt - Debt Maturities, Assuming the Exercise of all Extensions that are Exercisable Solely at our Option (Detail)
$ in Millions
Mar. 31, 2020
USD ($)
Debt Disclosure [Abstract]  
2020 $ 19
2021 1,709
2022 97
2023 827
2024 676
Thereafter(1) 1,556 [1]
Debt and capital lease obligations, gross $ 4,884
[1] Assumes the exercise of all extensions that are exercisable solely at our option.