Subsequent Events - Additional Information (Details) - Inspirato [Member] - USD ($) $ in Millions		9 Months Ended
Jun. 30, 2021	Sep. 30, 2021
Subsequent Event [Line Items]
Business Combination, Consideration Transferred		$ 1,070
Business Combination, Valuation adjusted upward		20
Minimum [Member]
Subsequent Event [Line Items]
Business Combination, Integration Related Costs		$ 15
Subsequent Event [Member]
Subsequent Event [Line Items]
Business Combination, Consideration Transferred	$ 1,070
Business Combination, Valuation adjusted upward	20
Subsequent Event [Member] \| Minimum [Member]
Subsequent Event [Line Items]
Business Combination, Integration Related Costs	$ 15

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6613-128477

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6578-128477

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