Line of Credit Facility, Additional Borrowing Capacity

No definition available.

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

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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+ Details

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

- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

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+ Details

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

- Definition

Increase for accrued, but unpaid interest on the debt instrument for the period.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(f))
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+ Details

Name:	us-gaap_DebtInstrumentIncreaseAccruedInterest
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types: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

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

- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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

- Definition

Face (par) amount of the original debt instrument that was repurchased.

+ References

No definition available.

+ Details

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

- Definition

Amount of interest payable on debt, including, but not limited to, trade payables.

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+ Details

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

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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+ Details

Name:	us-gaap_LineOfCredit
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

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

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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- Details

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- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByMeasurementBasisAxis=us-gaap_EstimateOfFairValueFairValueDisclosureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentRedemptionPeriodAxis=us-gaap_DebtInstrumentRedemptionPeriodOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_ConvertibleDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=expe_TwoPointFivePercentSeniorNotesDueOnTwoZeroTwoTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=expe_ConvertibleSeniorNotesDue2026Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Debt - Additional Information (Detail)		3 Months Ended
Debt - Additional Information (Detail)	Mar. 03, 2022 EUR (€)	Mar. 31, 2022 USD ($)	Dec. 31, 2021 EUR (€)	Dec. 31, 2021 USD ($)
Revolving Credit Facility
Debt Instrument [Line Items]
Senior unsecured notes principal amount		$ 0		$ 0
Credit facility		1,145,000,000
Letter of Credit
Debt Instrument [Line Items]
Letters of credit issued under the credit facility		$ 36,000,000		14,000,000
Debt Instrument, Redemption, Period Two \| Revolving Credit Facility \| Minimum
Debt Instrument [Line Items]
Debt, interest rate		1.00%
Debt Instrument, Redemption, Period Two \| Revolving Credit Facility \| Maximum
Debt Instrument [Line Items]
Debt, interest rate		1.75%
Debt Instrument, Redemption, Period Three \| Revolving Credit Facility \| Minimum \| Base Rate
Debt Instrument [Line Items]
Debt, interest rate		0.00%
Debt Instrument, Redemption, Period Three \| Revolving Credit Facility \| Maximum \| Base Rate
Debt Instrument [Line Items]
Debt, interest rate		0.75%
Senior Notes
Debt Instrument [Line Items]
Accrued interest related to senior notes		$ 57,000,000		98,000,000
Senior Notes \| Estimate of Fair Value Measurement
Debt Instrument [Line Items]
Fair value of senior notes		$ 6,800,000,000		8,000,000,000
Senior Notes \| Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Debt instrument redemption price percentage		101.00%
Convertible Debt \| Estimate of Fair Value Measurement
Debt Instrument [Line Items]
Fair value of senior notes		$ 1,200,000,000		$ 1,200,000,000
2.5% (€650 million) senior notes due 2022
Debt Instrument [Line Items]
Debt, interest rate			2.50%	2.50%
2.5% (€650 million) senior notes due 2022 \| Senior Notes
Debt Instrument [Line Items]
Debt, interest rate	2.50%		2.50%	2.50%
Debt instrument, redeemed amount \| €	€ 650,000,000
Debt instrument redemption price percentage	100.00%
Accrued and unpaid interest \| €	€ 12,000,000
Senior unsecured notes principal amount \| €			€ 650,000,000
0% convertible senior notes due 2026 \| Convertible Debt
Debt Instrument [Line Items]
Debt, interest rate		0.00%	0.00%	0.00%
Senior unsecured notes principal amount		$ 1,000,000,000
Foreign Credit Facility
Debt Instrument [Line Items]
Additional borrowing capacity		855,000,000
Credit facility borrowings outstanding		$ 0		$ 0
Foreign Credit Facility \| Debt Instrument, Redemption, Period Two \| Minimum
Debt Instrument [Line Items]
Debt, interest rate		1.25%
Foreign Credit Facility \| Debt Instrument, Redemption, Period Two \| Maximum
Debt Instrument [Line Items]
Debt, interest rate		2.00%
Foreign Credit Facility \| Debt Instrument, Redemption, Period Three \| Minimum \| Base Rate
Debt Instrument [Line Items]
Debt, interest rate		0.25%
Foreign Credit Facility \| Debt Instrument, Redemption, Period Three \| Maximum \| Base Rate
Debt Instrument [Line Items]
Debt, interest rate		1.00%