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JD Technology reorganization (Details) - CNY (¥) ¥ in Millions |  | 1 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Mar. 31, 2021 | Jun. 30, 2020 | Jun. 30, 2017 | Dec. 31, 2018
JD Technology [Member] |  |  |  |
JD Technology reorganization |  |  |  |
Additional cash in investment | ¥ 4,000 | ¥ 1,780 |  |
Equity method investment, ownership percentage | 41.70% | 36.80% |  |
JD Technology [Member] |  |  |  |
JD Technology reorganization |  |  |  |
Percentage of equity interest converted from profit sharing right |  | 36.80% |  |
Additional cash in investment | ¥ 4,000 | ¥ 1,780 |  |
Dual Class Voting Shareholding Structure [Member] | JD Technology [Member] |  |  |  |
JD Technology reorganization |  |  |  |
Percentage of Voting Right |  | 18.70% |  |
Held-for-sale | JD Technology [Member] |  |  |  |
JD Technology reorganization |  |  |  |
Percentage of equity stake disposed |  |  | 68.60% |
Amount raised |  |  | ¥ 14,300 |
Percentage of profit sharing right |  |  | 40.00% | 36.00%
Percentage of equity interest can be converted from profit sharing right |  |  | 40.00% | 36.00%

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