VACATION OWNERSHIP NOTES RECEIVABLE - Schedule of Notes Receivable Reserves (Details) - Originated $ in Millions	9 Months Ended
Sep. 30, 2026 USD ($)
Time Sharing Transactions, Allowance for Uncollectible Accounts [Roll Forward]
Beginning balance	$ 527
Increase in vacation ownership notes receivable reserve	192
Securitizations	0
Clean-up call	0
Write-offs	(153)
Defaulted vacation ownership notes receivable repurchase activity	0
Ending balance	566
Non-securitized
Time Sharing Transactions, Allowance for Uncollectible Accounts [Roll Forward]
Beginning balance	242
Increase in vacation ownership notes receivable reserve	139
Securitizations	(183)
Clean-up call	56
Write-offs	(153)
Defaulted vacation ownership notes receivable repurchase activity	130
Ending balance	231
Securitized
Time Sharing Transactions, Allowance for Uncollectible Accounts [Roll Forward]
Beginning balance	285
Increase in vacation ownership notes receivable reserve	53
Securitizations	183
Clean-up call	(56)
Write-offs	0
Defaulted vacation ownership notes receivable repurchase activity	(130)
Ending balance	$ 335

Amount of credit loss expense (reversal of expense) for financing receivable.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476148/220-40-50-22

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(11))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1

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- Definition

Allowance for uncollectible accounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 978
-SubTopic 310
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479230/978-310-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 978
-SubTopic 310
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479230/978-310-50-1

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Amount of decrease in the allowance for uncollectible accounts, for time sharing transactions, from direct write-offs charged against the allowance.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 978
-SubTopic 310
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479230/978-310-50-1

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- Definition

Financing Receivable, Allowance for Credit Losses, Repurchase Activity

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- Definition

Securitized Financing Receivable

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- Definition

Time Sharing Transactions, Clean-Up Call

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