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Inventories
6 Months Ended
Jun. 30, 2021
Inventory Disclosure [Abstract]  
Inventories Inventories
June 30, 2021December 31, 2020
Total productive material, supplies and work in process$8,124 $5,117 
Finished product, including service parts4,978 5,118 
Total inventories$13,102 $10,235 
Inventories at June 30, 2021 increased primarily due to certain vehicles being manufactured without final components as a result of the global semiconductor supply shortage.