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Gain on disposals of long-lived assets (Details) - CNY (¥) ¥ in Thousands | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Feb. 28, 2019 | Feb. 27, 2019
Long lived asset, disposal gain loss [Line Items] |  |  |  |
Total gross asset value to be disposed to JD LPC Fund |  |  |  | ¥ 10,900,000
Gain on disposals of long-lived assets | ¥ 3,070,297 | ¥ 0 |  |
Gain on disposals of completed assets to JD LPC Fund | ¥ 3,000,000 |  |  |
JD LPC Fund |  |  |  |
Long lived asset, disposal gain loss [Line Items] |  |  |  |
Total committed capital |  |  | ¥ 4,800,000 |
JD LPC Fund | General partner |  |  |  |
Long lived asset, disposal gain loss [Line Items] |  |  |  |
Committed percentage of the total capital (as a percent) |  |  | 20.00% |
JD LPC Fund | GIC |  |  |  |
Long lived asset, disposal gain loss [Line Items] |  |  |  |
Committed percentage of the total capital (as a percent) |  |  | 80.00% |

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- Definition Amount of assets held-for-sale that are not part of a disposal group. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 15 -Paragraph 4 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=77912953&loc=d3e400-110220 + Details
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