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Inventories (Tables)
 12 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
Inventories
Inventories consist of:
 
    
2021
      2020  
Raw materials and supplies
   
$
1,598
 
    $ 1,226  
Work-in-process
   
 
400
 
      340  
Finished goods
   
 
506
 
      470  
Tooling and engineering
   
 
1,465
 
      1,408  
    
 
 
     
 
 
  
    
$
3,969
 
    $ 3,444  
    
 
 
     
 
 
  
Tooling and engineering inventory represents costs incurred on tooling and engineering services contracts in excess of billed and unbilled amounts included in accounts receivable.