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Segment Reporting - Property and equipment for the companys geographic operations (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2019 CNY (¥)	Dec. 31, 2018 CNY (¥)	Dec. 31, 2017 CNY (¥)
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 3,673,792	¥ 25,576,204	¥ 15,763,557	¥ 11,594,792
PRC
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues		21,308,083	15,757,603	11,587,563
Property and equipment, net		1,498,423	1,295,171
Non-PRC
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues		4,268,121	5,954	¥ 7,229
Property and equipment, net		¥ 757,937	¥ 1,148

X

- Definition

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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No definition available.

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