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Summary of significant accounting policies (Details 2) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2016 USD ($) | Dec. 31, 2016 CNY (¥) | Dec. 31, 2015 CNY (¥)
Other investments |  |  |
Other short term investments | $ 1,550,759 | ¥ 10,766,920,000 |
Other long term investments | $ 1,007,839 | 6,997,425,000 | ¥ 0
Lower yield investments sold to the third-party investors recorded as accrued expenses and other current liabilities |  | 18,106,270,000 | 0
Nonrecourse securitization debt |  |  |
Collateralized accounts receivables and loans |  | ¥ 17,339,490,000 | ¥ 4,320,000,000
Nonrecourse securitization debt |  |  |
Nonrecourse securitization debt |  |  |
Weighted average interest rate | 4.39% | 4.39% | 5.30%
Minimum |  |  |
Land use rights, net |  |  |
Estimated useful lives (in years) | 34 years |  |
Maximum |  |  |
Land use rights, net |  |  |
Estimated useful lives (in years) | 70 years |  |
JD Finance |  |  |
Other investments |  |  |
Other short term investments |  | ¥ 10,766,920,000 | ¥ 0
Domain names |  |  |
Intangible assets, net |  |  |
Estimated useful lives (in years) | 10 years |  |
Trademarks | Minimum |  |  |
Intangible assets, net |  |  |
Estimated useful lives (in years) | 7 years |  |
Trademarks | Maximum |  |  |
Intangible assets, net |  |  |
Estimated useful lives (in years) | 20 years |  |
Copyrights | Minimum |  |  |
Intangible assets, net |  |  |
Estimated useful lives (in years) | 2 years |  |
Copyrights | Maximum |  |  |
Intangible assets, net |  |  |
Estimated useful lives (in years) | 5 years |  |

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