XML 97 R74.htm IDEA: XBRL DOCUMENT
v3.8.0.1

INVESTMENTS - Impairments - CNY (¥) ¥ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Impairments |  |  |
Carrying value, cost method impairments apply non-recurring fair value measures | ¥ 0 | ¥ 0 | ¥ 0
Carrying value, equity method impairments apply non-recurring fair value measures | 0 | 0 | 0
Other income/ (expense) |  |  |
Impairments |  |  |
Impairment charges under available-for-sale investments | 272 | 36 | 0
Impairment charges under equity method investments | 64 | 0 | 0
Impairment charges under cost method investments | ¥ 139 | ¥ 12 | ¥ 0

X
- Definition The carrying value for the cost method impairments apply non-recurring fair value measures. + References No definition available. + Details
Name: | ctrp_CostMethodInvestmentsImpairmentNonRecurringFairValueMeasures
Namespace Prefix: | ctrp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The carrying value for the equity method impairments apply non-recurring fair value measures. + References No definition available. + Details
Name: | ctrp_EquityMethodInvestmentsImpairmentNonRecurringFairValueMeasures
Namespace Prefix: | ctrp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of impairment charges of available-for-sale securities. + References No definition available. + Details
Name: | ctrp_ImpairmentChargesAvailableForSaleSecurities
Namespace Prefix: | ctrp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of impairment charges under cost method investments. + References No definition available. + Details
Name: | ctrp_ImpairmentChargesCostMethodInvestments
Namespace Prefix: | ctrp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of impairment charges of equity method investments. + References No definition available. + Details
Name: | ctrp_ImpairmentChargesEquityMethodInvestments
Namespace Prefix: | ctrp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_OtherNonoperatingIncomeExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |