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Debt Obligation - Schedule Required Annual Principal Payments of Long-term Debt, Excluding Debt Issuance Cost (Detail)
$ in Millions
Dec. 31, 2019
USD ($)
Long Term Debt Maturity [Line Items]  
2021 $ 2,679
2022 2,002
2023 4,446
2024 2,923
2025 and thereafter 13,131
Total $ 25,181