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Inventories, net (Details)
¥ in Millions, $ in Millions
Dec. 31, 2022
CNY (¥)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
CNY (¥)
Inventories      
Inventory, Gross ¥ 82,064   ¥ 77,900
Inventory valuation allowance (4,115)   (2,299)
Inventories, net 77,949 $ 11,302 75,601
Products      
Inventories      
Inventory, Gross 80,966   77,422
Packing materials and others      
Inventories      
Inventory, Gross ¥ 1,098   ¥ 478