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v3.20.1

RESTRICTED NET ASSETS (Details) - CNY (¥) ¥ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
RESTRICTED NET ASSETS |  |  |
Appropriations from after-tax profit to general reserve fund (as a percent) | 10.00% |  |
Limit of statutory reserve fund as a percentage of registered capital, after which allocations to statutory reserves are no longer required | 50.00% |  |
Appropriation to statutory reserve | ¥ 0 | ¥ 0 | ¥ 0
Restricted share capital | ¥ 1,667,461 | ¥ 1,531,183 |

X
- Definition Amount of restricted net assets of consolidated and unconsolidated subsidiaries as of the end of the most recently completed fiscal year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(e)(3)(ii)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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Balance Type: | debit
Period Type: | instant

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- Definition The percentage of net income after tax required for annual appropriation to statutory reserve. + References No definition available. + Details
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- Definition The amount of appropriation to statutory reserve made from after tax profit. + References No definition available. + Details
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- Definition The percentage of reserve level threshold for mandatory appropriation. + References No definition available. + Details
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Namespace Prefix: | yi_
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Balance Type: | na
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- References No definition available. + Details
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