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LEASES - Additional Information (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2021 renewal_option | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items] |  |  |
Lease term | 20 years |  |
Number of renewals (or more than) | renewal_option | 1 |  |
U.S. and Canada Leased Hotels |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Impairment loss |  | $ 116 | $ 99
Legacy-Starwood Office Building |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Impairment loss from building accounted for as a finance lease |  |  | $ 34
Minimum |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Renewal term | 5 years |  |
Maximum |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Renewal term | 10 years |  |

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- Definition Lessee, Operating And Finance Lease, Number of Renewals + References No definition available. + Details
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- Definition Lessee, Operating And Finance Lease, Renewal Term + References No definition available. + Details
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- Definition Lessee, Operating And Finance Lease, Term Of Contract + References No definition available. + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123351718&loc=d3e2420-110228 + Details
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- Definition Amount of impairment loss from right-of-use asset from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 25 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123399704&loc=SL77918425-209957 + Details
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- 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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- Details
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- Details
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- Details
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- Details
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