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Schedule of current finance debt (Details) - USD ($)
$ in Millions
Jun. 30, 2022
Dec. 31, 2021
Finance Debt    
Short-term debt $ 151 $ 108
Current portion of long-term debt 3,497 3,063
Accrued interest on short and long-term debt 468 470
Total $ 4,116 $ 3,641