XML 111 R88.htm IDEA: XBRL DOCUMENT
v3.8.0.1

TAXATION - Effect of preferential tax (Details) - CNY (¥) | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Income tax holiday |  |  |
Tax holiday effect | ¥ 345,292,589 | ¥ 177,799,057 | ¥ 162,896,542
ADS |  |  |
Income tax holiday |  |  |
Basic net income per ADS effect (in RMB per share) | ¥ 0.65 | ¥ 0.38 | ¥ 1.08
Diluted net income per ADS effect (in RMB per share) | ¥ 0.60 | ¥ 0.38 | ¥ 0.86

X
- Definition The basic per share effect of the aggregate dollar amount of the income tax benefit resulting from the income tax holidays granted to the entity by taxing jurisdictions. + References No definition available. + Details
Name: | ctrp_BasicNetIncomePerShareEffect
Namespace Prefix: | ctrp_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The diluted per share effect of the aggregate dollar amount of the income tax benefit resulting from the income tax holidays granted to the entity by taxing jurisdictions. + References No definition available. + Details
Name: | ctrp_DilutedNetIncomePerShareEffect
Namespace Prefix: | ctrp_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of income taxes from which a reporting entity is exempt or for which it will receive a reduction in income taxes as a result of the income tax holiday granted by the taxing jurisdiction. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 11.C) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330215-122817 + Details
Name: | us-gaap_IncomeTaxHolidayAggregateDollarAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_IncomeTaxHolidayLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=ctrp_AdsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |