Credit Agreement Original Amount

No definition available.

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Balance Type:	credit
Period Type:	instant

- Definition

The maximun percentage of the prior year's exces cash flow that the entity is required to make as an annual prepayment on the term loan.

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Annual Prepayment, Net Cash Proceeds from Assets Sales with Reinvestment Rights

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Annual Prepayment, Net Cash Proceeds from Issuance of Debt

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Increase (Decrease) in Interest Rate

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Percentage Secured by Outstanding Capital Stock or Other Equity Interests of Certain Foreign Subsidiaries

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Percentage Secured by Outstanding Capital Stock or Other Equity Interests of Substantially All Direct and Indirect Domestic Subsidiaries

+ References

No definition available.

+ Details

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Namespace Prefix:	expe_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Estimated Prepayment Of Long-Term Debt, Amount

+ References

No definition available.

+ Details

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Namespace Prefix:	expe_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

First Lien Leverage Ratio, Maximum

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Term Loan Original Amount

+ References

No definition available.

+ Details

Name:	expe_TermLoanOriginalAmount
Namespace Prefix:	expe_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of the frequency of periodic payments (monthly, quarterly, annual).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the required periodic payments applied to principal.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of debt issuance costs (for example, but not limited to, legal, accounting, broker, and regulatory fees).

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

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- Details

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- Details

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Term Loan Narrative (Details) - Orbitz		6 Months Ended	12 Months Ended
Term Loan Narrative (Details) - Orbitz	Apr. 15, 2014	Jun. 30, 2015 USD ($) Rate	Dec. 31, 2014 USD ($) Rate	Dec. 31, 2013 USD ($)	Mar. 25, 2013 USD ($)
Debt Instrument [Line Items]
Revolver, maximum borrowing capacity		$ 80,000,000
Term Loan Original Amount		450,000,000
Revolver, maximum borrowing capacity					$ 515,000,000
Estimated prepayment of long-term debt, amount		$ 24,100,000	$ 25,900,000
Term loan, frequency of periodic installments		quarterly	quarterly
Term loan, annual prepayment, max percent of excess cash flow \| Rate		50.00%	50.00%
Annual prepayment, percentage net cash proceeds from asset sales subject to certain reinvestment rights \| Rate		100.00%	100.00%
Annual prepayment, percentage net cash proceeds of any issuance of debt other than debt permitted to be incurred under the Credit Agreement \| Rate		100.00%	100.00%
Debt, Long-term and Short-term, Combined Amount		$ 429,599,000	$ 447,750,000
Term loan, effective interest rate \| Rate		4.94%	4.94%
Debt Instrument, Percentage Secured by Outstanding Capital Stock or Other Equity Interests of Substantially All Direct and Indirect Domestic Subsidiaries		100.00%	100.00%
Debt Instrument, Percentage Secured by Outstanding Capital Stock or Other Equity Interests of Certain Foreign Subsidiaries		65.00%	65.00%
First Lien Leverage Ratio, Maximum		5.00	5.00
Debt Issuance Cost			$ 6,700,000
Unamortized Debt Issuance Expense			2,200,000
2013 Credit Agreement [Member]
Debt Instrument [Line Items]
Revolver, maximum borrowing capacity		$ 530,000,000.0
Debt, Long-term and Short-term, Combined Amount			$ 0	$ 443,250,000
Minimum [Member]
Debt Instrument [Line Items]
Increase (decrease) in interest rate		0.00%	0.00%
Maximum [Member]
Debt Instrument [Line Items]
Increase (decrease) in interest rate		25.00%	25.00%
Eurocurrency Rate [Member]
Debt Instrument [Line Items]
Term loan, description of variable rate basis		Eurocurrency Rate is equal to the LIBOR rate as determined by the British Bankers Association	The Eurocurrency Rate is equal to the LIBOR rate as determined by the British Bankers Association
Base Rate [Member]
Debt Instrument [Line Items]
Term loan, description of variable rate basis		The Base Rate for any day is equal to the greater of (a) the Fed Funds Rate in effect plus 0.5%, (b) the Credit Suisse AG prime rate and (c) the one-month Eurocurrency Rate	The Base Rate for any day is equal to the greater of (a) the Fed Funds Rate in effect plus 0.5%, (b) the Credit Suisse AG prime rate and (c) the one-month Eurocurrency Rate
Fixed Rate [Domain]
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount		$ 200,000,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolver, maximum borrowing capacity		$ 80,000,000
Revolver, maximum borrowing capacity			$ 80,000,000		$ 80,000,000
Revolving Credit Facility [Member] \| Eurocurrency Rate [Member]
Debt Instrument [Line Items]
Term loan, basis spread on variable rate \| Rate		3.00%
Revolving Credit Facility [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Term loan, basis spread on variable rate \| Rate		2.00%
Term Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Term	5 years
Term loan, periodic installments		$ 1,125,000
Term Loan [Member] \| Eurocurrency Rate [Member]
Debt Instrument [Line Items]
Term loan, basis spread on variable rate \| Rate		3.50%
Term Loan [Member] \| Eurocurrency Rate [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Term loan, basis spread on variable rate \| Rate		1.00%
Term Loan [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Term loan, basis spread on variable rate \| Rate		2.50%
Eurocurrency Rate [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Term loan, basis spread on variable rate		1.00%
LIBOR
Debt Instrument [Line Items]
Debt, Long-term and Short-term, Combined Amount		$ 229,600,000