XML 21 R55.htm IDEA: XBRL DOCUMENT
v3.3.1.900

FAIR VALUE MEASUREMENT (Details 3) - CNY (¥) ¥ in Millions | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2015 | Dec. 31, 2014
Dining Secretary |  |
Significant unobservable inputs used in the valuation |  |
Loss from impairment of long-term investment (Note 9) |  | ¥ 33
Dining Secretary | Discounted cash flow |  |
Significant unobservable inputs used in the valuation |  |
WACC (as a percent) | 27.94% |
Terminal growth rate (as a percent) | 3.00% |
LoMD (as a percent) | 25.00% |
Dining Secretary | Option pricing model |  |
Significant unobservable inputs used in the valuation |  |
Time to liquidation | 3 years 4 days |
Risk-free rate (as a percent) | 4.13% |
Expected volatility (as a percent) | 41.40% |
Dividend yield (as a percent) | 0.00% |
Dining Secretary | Option pricing model | Liquidation scenario |  |
Significant unobservable inputs used in the valuation |  |
Probability (as a percent) | 45.00% |
Dining Secretary | Option pricing model | Redemption scenario |  |
Significant unobservable inputs used in the valuation |  |
Probability (as a percent) | 45.00% |
Dining Secretary | Option pricing model | IPO scenario |  |
Significant unobservable inputs used in the valuation |  |
Probability (as a percent) | 10.00% |
Happy City | Option pricing model | Liquidation scenario |  |
Significant unobservable inputs used in the valuation |  |
Probability (as a percent) | 50.00% |
Happy City | Option pricing model | Redemption scenario |  |
Significant unobservable inputs used in the valuation |  |
Probability (as a percent) | 50.00% |
Available-for-sale securities. | Tujia and LY.com | Discounted cash flow |  |
Significant unobservable inputs used in the valuation |  |
WACC (as a percent) | 19.00% |
Terminal growth rate (as a percent) | 3.00% |
LoMD (as a percent) | 28.00% |
Available-for-sale securities. | Tujia and LY.com | Option pricing model |  |
Significant unobservable inputs used in the valuation |  |
Time to liquidation | 3 years |
Risk-free rate (as a percent) | 3.43% |
Expected volatility (as a percent) | 50.89% |
Dividend yield (as a percent) | 0.00% |
Available-for-sale securities. | Tujia and LY.com | Option pricing model | Liquidation scenario |  |
Significant unobservable inputs used in the valuation |  |
Probability (as a percent) | 20.00% |
Available-for-sale securities. | Tujia and LY.com | Option pricing model | Redemption scenario |  |
Significant unobservable inputs used in the valuation |  |
Probability (as a percent) | 80.00% |
Available-for-sale securities. | Dining Secretary |  |
Significant unobservable inputs used in the valuation |  |
Loss from impairment of long-term investment (Note 9) |  | 33
Reversal of prior recognized unrealized loss |  | ¥ 4
Available-for-sale securities. | Happy City | Discounted cash flow |  |
Significant unobservable inputs used in the valuation |  |
WACC (as a percent) | 27.67% |
Terminal growth rate (as a percent) | 3.00% |
LoMD (as a percent) | 25.00% |
Available-for-sale securities. | Happy City | Option pricing model |  |
Significant unobservable inputs used in the valuation |  |
Time to liquidation | 2 years 8 months 1 day |
Risk-free rate (as a percent) | 1.567% |
Expected volatility (as a percent) | 45.40% |
Dividend yield (as a percent) | 0.00% |

X
- Definition Represents the probability rate, used as an input to measure fair value. + References No definition available. + Details
Name: | ctrp_FairValueInputsProbabilityRate
Namespace Prefix: | ctrp_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the amount of loss from impairment of long term investment. + References No definition available. + Details
Name: | ctrp_LossFromImpairmentOfLongTermInvestment
Namespace Prefix: | ctrp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of reversal after tax of unrealized holding gain (loss) on available-for-sale securities. + References No definition available. + Details
Name: | ctrp_OtherComprehensiveIncomeLossReversalOfUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
Namespace Prefix: | ctrp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueAssumptionsExpectedDividendRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueAssumptionsExpectedTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueAssumptionsExpectedVolatilityRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Risk-free interest rate assumption used in valuing an instrument. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueAssumptionsRiskFreeInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
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_FairValueInputsAssetsQuantitativeInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Adjustment to the discount rate used to measure fair value for lack of ability to convert business interests into cash quickly. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueInputsDiscountForLackOfMarketability
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueInputsDiscountRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of assumed long-term growth in revenues, used as an input to measure fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueInputsLongTermRevenueGrowthRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | invest_InvestmentIssuerAxis=ctrp_DiningSecretaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationTechniqueAxis=ctrp_DiscountedCashFlowValuationTechniqueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationTechniqueAxis=ctrp_OptionPricingModelValuationTechniqueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ctrp_ProbabilityByScenarioAxis=ctrp_LiquidationScenarioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ctrp_ProbabilityByScenarioAxis=ctrp_RedemptionScenarioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ctrp_ProbabilityByScenarioAxis=ctrp_IPOScenarioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentIssuerAxis=ctrp_HappyCityHoldingsLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_AvailableforsaleSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentIssuerAxis=ctrp_TujiaAndLydotcomMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |