XML 105 R31.htm IDEA: XBRL DOCUMENT v2.4.0.6
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 12 Months Ended
Dec. 31, 2011
Estimated Useful lives Of Fixed Assets

Fixed assets are stated at cost less accumulated depreciation. Depreciation or amortization is recorded on a straight-line basis over the shorter of the estimated useful lives of the assets or the term of the related lease, as follows:

 

Office building    - 45 years

Office building related facility, machinery and equipment

    - 15 years
Computer equipment    - 3 or 5 years
Internal use software development costs    - 3 years
Office equipment    - 3 or 5 years
Vehicles    - 5 years
Leasehold improvements    - over the shorter of lease terms or estimated useful lives of the   assets

 

 
Intangible Assets, Weighted Average Useful Lives from Date of Purchase

Intangible assets have weighted average useful lives from the date of purchase as follows:

 

Land use right    - 50 years
Customer relationships    - 9.3 years
Software    - 4.8 years
Trademarks    - 10 years
User list    - 3.0 years
Others    - 4.2 years