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Debt, Credit Facilities and Commitments and Contingencies - Summary of Maturities of Long-Term Debt (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Long-term Debt, Fiscal Year Maturity [Abstract]    
2022 $ 12,428  
2023 4,167  
2024 7,219  
2025 8,771  
2026 6,000  
Thereafter 37,377  
Total obligations and commitments 75,962  
Fair value hedges, unamortized bond premiums and discounts, deferred financing costs and finance lease obligations 708  
Total long-term debt and finance lease obligations $ 76,670 $ 86,022