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Debt - Schedule of Annual Maturities of Debt (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Aug. 31, 2022
Nov. 30, 2021
Debt Instrument [Line Items]      
4Q 2022   $ 991  
2023   2,377  
2024   4,935  
2025   4,258  
2026   4,385  
Thereafter   17,862  
Long-term debt   34,808  
Short-term borrowings   2,675 $ 2,790
Revolving credit facility      
Debt Instrument [Line Items]      
Available for borrowing   300  
Revolver Facility Expires August 2024 | Unsecured Debt      
Debt Instrument [Line Items]      
Short-term borrowings   $ 2,700  
Term 6 months