CONTINGENCIES AND COMMITMENTS (Details) $ in Millions	Sep. 30, 2026 USD ($) vacation_ownership_unit
Commitments and Contingencies Disclosure [Line Items]
Surety bonds issued	$ 140
Guarantor obligations, maximum exposure, remainder of year	$ 7
Exchange & Third-Party Management
Commitments and Contingencies Disclosure [Line Items]
Guarantor obligations, ownership percentage	95.00%
Revolving corporate credit facility, net
Commitments and Contingencies Disclosure [Line Items]
Letters of credit outstanding	$ 4
Revolving corporate credit facility, net \| Securitization Transaction
Commitments and Contingencies Disclosure [Line Items]
Letters of credit outstanding	3
Letter of credit
Commitments and Contingencies Disclosure [Line Items]
Letters of credit outstanding	21
Nashville, Tennessee
Commitments and Contingencies Disclosure [Line Items]
Purchase commitment obligation due, 2027	$ 122
Number of vacation ownership units, acquisition pending \| vacation_ownership_unit	168
Thailand \| 60 Unit Transaction
Commitments and Contingencies Disclosure [Line Items]
Purchase commitment	$ 37
Purchase commitment obligation due, 2027	4
Purchase commitment obligation due, 2028	$ 33
Number of vacation ownership units, acquisition pending \| vacation_ownership_unit	60
Information technology hardware and software
Commitments and Contingencies Disclosure [Line Items]
Purchase commitment	$ 140
Purchase commitment obligation due, remainder of 2026	35
Purchase commitment obligation due, 2027	49
Purchase commitment obligation due, 2028	28
Purchase commitment obligation due, 2029	11
Purchase commitment obligation due, 2030	11
Purchase commitment obligation due, thereafter	$ 6

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

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 605
-Name Accounting Standards Codification
-Section 55
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477548/944-605-55-15

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 605
-Name Accounting Standards Codification
-Section 55
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477548/944-605-55-12

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Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.9-06)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477314/942-235-S99-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-4

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3

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Amount of purchase arrangement to be paid in fourth fiscal year following current fiscal year. Includes, but is not limited to, recorded and unrecorded purchase obligations, long-term purchase commitment, and short-term purchase commitment. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of purchase arrangement to be paid in second fiscal year following current fiscal year. Includes, but is not limited to, recorded and unrecorded purchase obligations, long-term purchase commitment, and short-term purchase commitment. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Commitments and Contingencies Disclosure [Line Items]

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Guarantor Obligations, Maximum Exposure, Undiscounted, Remainder Of Fiscal Year

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Guarantor Obligations, Ownership Percentage

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Number Of Vacation Ownership Units, Acquisition Pending

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Purchase Obligation Due, After Year Four

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- Definition

Surety Bonds issued.

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