COMMON SHARES (Details) (USD $)
In Millions, except Share data, unless otherwise specified
12 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2013
Nov. 30, 2012
Oct. 31, 2012
Dec. 31, 2013
Share Incentive Plan and 2011 Equity Incentive Plan
Dec. 31, 2013
Beijing DPC, Beijing Sunwin, and Pactera Financial Solution
Dec. 31, 2013
Common Stock
Share- based compensation plan
Dec. 31, 2012
Common Stock
Share- based compensation plan
Dec. 31, 2011
Common Stock
Share- based compensation plan
Dec. 31, 2012
ADS
Dec. 31, 2013
ADS
Common Shares                      
Common share consolidation ratio in connection with the merger of equals with VanceInfo 13.9482                    
Number of ordinary share represented by each American Depository Share   1 1 19              
Shares authorized under repurchase program                   $ 30  
Period over which shares will be repurchased under the repurchase program                   12 months  
Shares repurchased                     4,643,359
Total consideration for repurchase of shares                     $ 30
Number of repurchased shares cancelled                     2,900,000
Shares issued for future delivery to employees                     1,743,359
Number of common shares issued           319,556          
Vesting of nonvested shares award (in shares)         150,975            
Issuance of common shares for share-based compensation             1,743,359 2,150,814 1,075,406    
Common shares, outstanding (in shares) 88,312,068 85,503,321                  
Par value of common stock issued (in dollars per share) $ 0.00139482 $ 0.00139482