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Share-based payments - Share-based compensation expenses (Details) - CNY (¥) ¥ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Share-based compensation expenses |  |  |
Share-based compensation expenses | ¥ (671,210) | ¥ (667,098) | ¥ (475,653)
Fulfillment expenses |  |  |
Share-based compensation expenses |  |  |
Share-based compensation expenses | (73,151) | (73,235) | (38,428)
Marketing expenses |  |  |
Share-based compensation expenses |  |  |
Share-based compensation expenses | (41,063) | (40,364) | (38,459)
Technology and content expenses |  |  |
Share-based compensation expenses |  |  |
Share-based compensation expenses | (203,594) | (206,073) | (183,122)
General and administrative expenses |  |  |
Share-based compensation expenses |  |  |
Share-based compensation expenses | ¥ (353,402) | ¥ (347,426) | ¥ (215,644)

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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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. + References No definition available. + Details
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