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Convertible Redeemable Preferred Shares (Narrative) (Details) ¥ / shares in Units, ¥ in Thousands | 1 Months Ended | 6 Months Ended | 8 Months Ended | 12 Months Ended | 34 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Oct. 31, 2014 CNY (¥) ¥ / shares shares | Aug. 31, 2014 CNY (¥) shares | Sep. 30, 2012 CNY (¥) | Jan. 31, 2011 CNY (¥) | Jun. 30, 2011 CNY (¥) | Aug. 19, 2010 CNY (¥) | Dec. 31, 2016 CNY (¥) shares | Dec. 31, 2016 USD ($) shares | Dec. 31, 2015 CNY (¥) shares | Dec. 31, 2014 CNY (¥) shares | Dec. 31, 2013 shares | Sep. 30, 2012 CNY (¥) | Oct. 31, 2014 $ / shares
Convertible Redeemable Preferred Shares [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Deemed dividend |  |  |  |  |  |  |  |  |  | ¥ 16,666 |  |  |
Ordinary shares repurchased | shares |  |  |  |  |  |  |  |  |  | 1,925,063 |  |  |
Consideration paid to repurchase ordinary shares |  |  |  |  |  |  | 50,842 |  | 13,958 | ¥ 20,963 |  |  |
Proceeds from issuance of Series D convertible redeemable preferred shares, net |  |  |  |  |  |  |  |  |  | 145,746 |  |  |
Stock Issued During Period, Shares, New Issues | shares |  |  |  |  |  |  | 9,000,000 | 9,000,000 | 37,950,000 |  |  |  |
Founding Shareholders [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible Redeemable Preferred Shares [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Ordinary shares repurchased | shares |  | 1,925,063 |  |  |  |  |  |  |  |  |  |  |
Consideration paid to repurchase ordinary shares |  | ¥ 20,964 |  |  |  |  |  |  |  |  |  |  |
Series A equity interests [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible Redeemable Preferred Shares [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Interest compounding rate (as a percent) |  |  |  |  |  |  |  |  | 12.50% |  |  |  |
Conversion ratio |  |  |  |  |  |  |  |  | 1 |  |  |  |
Series B equity interests [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible Redeemable Preferred Shares [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Interest compounding rate (as a percent) |  |  |  |  |  |  |  |  | 12.50% |  |  |  |
Conversion ratio |  |  |  |  |  |  |  |  | 1 |  |  |  |
Series C1 equity interests [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible Redeemable Preferred Shares [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Interest compounding rate (as a percent) |  |  |  |  |  |  | 15.00% | 15.00% |  |  |  |  |
Conversion ratio |  |  |  |  |  |  | 1 | 1 |  |  |  |  |
Fair value of shares determined by the Company with the assistance of independent valuation firm |  |  | ¥ 270,923 |  |  |  |  |  |  |  |  | ¥ 270,923 |
Deemed dividend |  |  | ¥ 4,683 |  |  |  |  |  |  |  |  |  |
Series A Shares [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible Redeemable Preferred Shares [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issued upon conversion of equity interests | shares |  |  |  |  |  |  |  |  |  |  | 19,622,241 |  |
Series B Shares [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible Redeemable Preferred Shares [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issued upon conversion of equity interests | shares |  |  |  |  |  |  |  |  |  |  | 26,532,203 |  |
Series C1 Shares [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible Redeemable Preferred Shares [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issued upon conversion of equity interests | shares |  |  |  |  |  |  |  |  |  |  | 29,056,332 |  |
Series C2 Shares [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible Redeemable Preferred Shares [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of shares determined by the Company with the assistance of independent valuation firm |  | 37,630 |  |  |  |  |  |  |  |  |  |  |
Deemed dividend |  | 16,666 |  |  |  |  |  |  |  | ¥ 16,666 |  |  |
Proceeds from issuance of Series D convertible redeemable preferred shares, net |  | ¥ 20,964 |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues | shares |  | 1,925,063 |  |  |  |  |  |  |  |  |  |  |
Series D Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible Redeemable Preferred Shares [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of Series D convertible redeemable preferred shares, net | ¥ 145,746 |  |  |  |  |  |  |  |  |  |  |  |
Par value of preferred share (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.0001
Issue price per share | (per share) | ¥ 19.69 |  |  |  |  |  |  |  |  |  |  |  | $ 3.20
Stock Issued During Period, Shares, New Issues | shares | 7,504,324 |  |  |  |  |  |  |  |  |  |  |  |
Alibaba [Member] | Shanghai Baozun [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible Redeemable Preferred Shares [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity interest acquired by investors |  |  |  |  |  |  |  |  |  |  |  | 25.16% |
Alibaba [Member] | Shanghai Baozun [Member] | Series A equity interests [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible Redeemable Preferred Shares [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity interest acquired by investors |  |  |  |  |  | 39.56% |  |  |  |  |  |  |
Total consideration |  |  |  |  |  | ¥ 32,732 |  |  |  |  |  |  |
Alibaba [Member] | Shanghai Baozun [Member] | Series B equity interests [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible Redeemable Preferred Shares [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity interest acquired by investors |  |  |  | 7.29% |  |  |  |  |  |  |  |  |
Total consideration |  |  |  | ¥ 12,859 |  |  |  |  |  |  |  |  |
Crescent Castle and New Access [Member] | Shanghai Baozun [Member] | Series B equity interests [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible Redeemable Preferred Shares [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity interest acquired by investors |  |  |  |  | 27.55% |  |  |  |  |  |  |  |
Total consideration |  |  |  |  | ¥ 119,120 |  |  |  |  |  |  |  |
Group of investors including existing preferred share investors [Member] | Shanghai Baozun [Member] | Series C1 equity interests [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible Redeemable Preferred Shares [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity interest acquired by investors |  |  | 27.62% |  |  |  |  |  |  |  |  |  |
Total consideration |  |  | ¥ 266,240 |  |  |  |  |  |  |  |  |  |

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