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Debt - Schedule of Annual Maturities of Debt (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
May 31, 2022
Nov. 30, 2021
Debt Instrument [Line Items]      
3Q 2022   $ 397  
4Q 2022   943  
2023   2,837  
2024   4,705  
2025   4,415  
2026   4,512  
Thereafter   18,116  
Long-term debt   35,925  
Short-term borrowings   2,675 $ 2,790
Revolver Facility Expires August 2024 | Unsecured Debt      
Debt Instrument [Line Items]      
Short-term borrowings   2,700 $ 2,800
Term 6 months    
Revolving credit facility      
Debt Instrument [Line Items]      
Available for borrowing   $ 300