Subsequent Events Narrative (Details) - USD ($)	May 05, 2020	Jul. 14, 2020
Series A Preferred Stock
Subsequent Event [Line Items]
Preferred stock, dividend rate, percentage	9.50%
Subsequent Event \| Unsecured Senior Notes
Subsequent Event [Line Items]
Senior unsecured notes principal amount		$ 1,250,000,000
Subsequent Event \| 3.600% senior notes due 2023 \| Unsecured Senior Notes
Subsequent Event [Line Items]
Senior unsecured notes principal amount		$ 500,000,000
Debt, interest rate (percentage)		3.60%
Senior notes issued price percentage		99.922%
Subsequent Event \| 4.625% senior notes due 2027 \| Unsecured Senior Notes
Subsequent Event [Line Items]
Senior unsecured notes principal amount		$ 750,000,000
Debt, interest rate (percentage)		4.625%
Senior notes issued price percentage		99.997%

The senior notes were issued at a percentage of par (less than 100% of par results in a discount).

No definition available.

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

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

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

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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=120391452&loc=d3e13212-122682

+ Details

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- Definition

The percentage rate used to calculate dividend payments on preferred stock.

+ References

No definition available.

+ Details

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

- 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

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- Details

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- Details

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- Details

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- Details

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- Details

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