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EMPLOYEE BENEFITS (Details) (CNY) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
EMPLOYEE BENEFITS |  |  |
Expense of Employee Benefits | 440,884,906 | 334,150,368 | 234,725,030

X
- Definition The amount of expense related to government sponsored employee benefits during the period. + References No definition available. + Details
Name: | ctrp_ExpenseOfEmployeeBenefits
Namespace Prefix: | ctrp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | us-gaap_CompensationAndRetirementDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration