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Inventories (Tables)
12 Months Ended
Mar. 31, 2020
Inventory Disclosure [Abstract]  
Summary of Inventories
Inventories are comprised of the following:
                 
 
Yen in millions
 
 
March 31
 
 
2019
 
 
2020
 
Finished products
   
407,295
     
345,231
 
Work in process
   
154,178
     
149,969
 
Raw materials, purchased components and supplies
   
91,805
     
94,769
 
   
 
 
   
 
 
 
Inventories
   
653,278
     
589,969