Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482130/360-10-45-4

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

Leases Additional Information (Details) $ in Millions	12 Months Ended
Leases Additional Information (Details) $ in Millions	Dec. 31, 2023 USD ($) Hotel	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Lessee Disclosure [Abstract]
Hotels under operating leases	41
Hotels under finance leases	5
Number of finance leases that were the liabilities of VIEs	2
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment losses \| $	$ 38	$ 0	$ 0
Property subject to a finance lease [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment losses \| $	$ 33