XML 51 R41.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Principal accounting policies (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2016
Principal accounting policies [Abstract] |
Schedule of property and equipment estimated useful lives and residual rate |
|  | Estimated useful lives |  | Residual rate |
Buildings |  | 40 years |  |  | 0 | %
Servers, computers and equipment |  | 3 years |  |  | 0%-5 | %
Leasehold improvements |  | Shorter of lease term or 5 years |  |  | 0 | %
Decoration of buildings |  | 10 years |  |  | 0 | %
Motor vehicles |  | 4 years |  |  | 5 | %
Furniture, fixture and office equipment |  | 5 years |  |  | 0%-5 | %
Schedule of amortization of finite-lived intangible assets is computed using the straight-line method over the following estimated useful lives |
| Estimated useful lives
Brand names | 1-15 years
Operating rights for game broadcasting | Over the contract terms
Operating rights for licensed games | Shorter of the economic life or license period of relevant online game
Software | 3 -5 years
Domain names | 15 years
Technology | 5 years
Others | 3-5 years

X
- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the estimated useful life and residual rate of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References No definition available. + Details
Name: | yy_PropertyPlantAndEquipmentEstimatedUsefulLivesAndResidualRateTableTextBlock
Namespace Prefix: | yy_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of useful life of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References No definition available. + Details
Name: | yy_ScheduleOfUsefulLifeOfFiniteLivedIntangibleAssetsTableTextBlock
Namespace Prefix: | yy_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration