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Debt - Schedule of Annual Maturities of Debt (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Feb. 28, 2022
Nov. 30, 2021
Debt Instrument [Line Items]      
2Q 2022   $ 182  
3Q 2022   409  
4Q 2022   982  
2023   2,898  
2024   4,825  
2025   4,522  
2026   4,598  
Thereafter   17,304  
Total   35,721  
Short-term borrowings   2,741 $ 2,790
Revolver Facility Expires August 2024 | Unsecured Debt      
Debt Instrument [Line Items]      
Short-term borrowings   2,700  
Term 6 months    
Revolving credit facility      
Debt Instrument [Line Items]      
Available for borrowing   $ 300