Earning per share [Line Items]

No definition available.

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- Definition

Represents the number of American depositary shares ("ADSs") for each share of the entity's common stock.

+ References

No definition available.

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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- Definition

Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of call options and warrants using the treasury stock method.

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- Definition

Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of convertible debt securities using the if-converted method.

+ References

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- Definition

Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

+ References

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- Definition

The after-tax amount of interest recognized in the period associated with any convertible debt.

+ References

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- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent, and includes adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions.

+ References

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- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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No definition available.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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EARNINGS PER SHARE (Details)	9 Months Ended
EARNINGS PER SHARE (Details)	Sep. 30, 2015 USD ($) $ / shares shares	Sep. 30, 2015 CNY (¥) ¥ / shares shares	Sep. 30, 2014 CNY (¥) ¥ / shares shares	Nov. 18, 2015	Nov. 17, 2015
Numerator:
Net income attributable to Ctrip's shareholders	$ 382,643,340	¥ 2,431,928,022	¥ 467,164,487
Eliminate the dilutive effect of interest expense of convertible bond \| ¥		145,195,565	9,190,333
Numerator for diluted earnings per share \| ¥		¥ 2,577,123,587	¥ 476,354,820
Denominator:
Denominator for basic earnings per ordinary share - weighted average ordinary shares outstanding	35,460,682	35,460,682	34,038,621
Dilutive effect of share options	3,033,214	3,033,214	3,059,411
Dilutive effect of convertible bond	6,134,484	6,134,484	1,727,690
Dilutive effect of convertible bond sold warrants	497,812	497,812	892,676
Denominator for diluted earnings per ordinary share	45,126,192	45,126,192	39,718,398
Earning per share
Number of outstanding weighted average ordinary shares excluded from the calculation of diluted earnings per common share	2,478,334	2,478,334	4,877,790
2018 Convertible Senior Notes
Earning per share
Number of outstanding weighted average ordinary shares excluded from the calculation of diluted earnings per common share			2,551,346
Priceline Convertible Notes
Earning per share
Number of outstanding weighted average ordinary shares excluded from the calculation of diluted earnings per common share			303,891
Stock options
Earning per share
Number of outstanding weighted average ordinary shares excluded from the calculation of diluted earnings per common share	430,029	430,029	72,302
Sold Warrants
Earning per share
Number of outstanding weighted average ordinary shares excluded from the calculation of diluted earnings per common share	2,048,305	2,048,305	1,950,251
Ordinary shares
Earning per share
Basic (in dollars per share) \| (per share)	$ 10.79	¥ 68.58	¥ 13.72
Diluted (in dollars per share) \| (per share)	8.99	57.11	11.99
ADS
Denominator:
Ratio of American depositary shares ("ADSs") to ordinary shares				8	4
Earning per share
Basic (in dollars per share) \| (per share)	1.35	8.58	1.71
Diluted (in dollars per share) \| (per share)	$ 1.13	¥ 7.14	¥ 1.50