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Restricted net assets (Details) - CNY (¥) ¥ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015
Percentage of after-tax income required to be transferred to statutory general reserve fund | 10.00% |
Reserve level threshold for mandatory appropriation requirement (as a percent) | 50.00% |
Restricted net assets | ¥ 2,678,921 | ¥ 2,685,373

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://www.xbrl.org/2003/role/presentationRef -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
Name: | us-gaap_AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the percentage of after-tax income required to be appropriated towards the general reserve fund for the entity's subsidiaries and the VIEs and VIE''s subsidiary. + References No definition available. + Details
Name: | yy_AppropriationOfAfterTaxIncomeToStatutoryGeneralReservePerAnnum
Namespace Prefix: | yy_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the level of the general reserve fund balance as a percentage of registered capital for the entity's subsidiaries and the VIEs and VIE''s subsidiary in the PRC, which must be attained before mandatory transfers to the reserve are no longer required. + References No definition available. + Details
Name: | yy_ReserveLevelThresholdForMandatoryTransferPercentage
Namespace Prefix: | yy_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant