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Inventories, net (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2018 USD ($)	Dec. 31, 2018 CNY (¥)	Dec. 31, 2017 CNY (¥)
Inventories
Inventory, Gross		¥ 44,898,944	¥ 42,199,152
Inventory valuation allowance		(868,860)	(498,773)
Inventories, net	$ 6,403,910	44,030,084	41,700,379
Products
Inventories
Inventory, Gross		44,678,983	41,840,945
Packing materials and others
Inventories
Inventory, Gross		¥ 219,961	¥ 358,207

X

- Definition

Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount of valuation reserve for inventory.

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