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Subsequent Events (Details) - Orbitz - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2014 | Feb. 12, 2015
Subsequent Event [Line Items] |  |
Potential Contract Exit Termination Payments Owed | $ 115.0 |
Subsequent Event [Member] |  |
Subsequent Event [Line Items] |  |
Sale of Stock, Price Per Share |  | $ 12.00
Expedia, Inc. [Member] |  |
Subsequent Event [Line Items] |  |
Potential Contract Exit Termination Payments Owed | $ 57.5 |

X
- Definition Termination payments made during the period relating to the early termination of an agreement. + References No definition available. + Details
Name: | expe_ContractExitTerminationPayments
Namespace Prefix: | expe_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination. + References No definition available. + Details
Name: | us-gaap_BusinessAcquisitionSharePrice
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | dei_LegalEntityAxis=expe_OrbitzMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | expe_CompanyAxis=expe_ExpediaInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |