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Inventories - Schedule of Inventories (Details) - USD ($)
$ in Millions
Jun. 30, 2022
Dec. 31, 2021
Inventory Disclosure [Abstract]    
Finished goods $ 1,680 $ 1,747
Raw materials and work in process 6,542 6,220
Supplies 217 196
Total (approximates current cost) 8,439 8,163
Decrease to LIFO cost (140) (16)
Total current and noncurrent inventories 8,299 8,147
Recognized as:    
Inventories 5,535 5,953
Other assets $ 2,764 $ 2,194