VACATION OWNERSHIP NOTES RECEIVABLE - Future Principal Payments, Net of Reserves, and Interest Rates of Vacation Ownership Notes Receivable (Details) $ in Millions	Jun. 30, 2020 USD ($)
Acquired
Future Minimum Payments Receivable [Line Items]
2020	$ 24
2021	47
2022	47
2023	47
2024	45
Thereafter	153
Total Vacation ownership notes receivable, net of reserve	363
Acquired \| Non-Securitized
Future Minimum Payments Receivable [Line Items]
2020	2
2021	3
2022	3
2023	3
2024	4
Thereafter	14
Total Vacation ownership notes receivable, net of reserve	29
Acquired \| Securitized Vacation Ownership Notes Receivable
Future Minimum Payments Receivable [Line Items]
2020	22
2021	44
2022	44
2023	44
2024	41
Thereafter	139
Total Vacation ownership notes receivable, net of reserve	$ 334
Acquired \| Weighted Average
Future Minimum Payments Receivable [Line Items]
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	13.40%
Acquired \| Weighted Average \| Non-Securitized
Future Minimum Payments Receivable [Line Items]
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	13.40%
Acquired \| Weighted Average \| Securitized Vacation Ownership Notes Receivable
Future Minimum Payments Receivable [Line Items]
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	13.50%
Acquired \| Minimum
Future Minimum Payments Receivable [Line Items]
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	3.00%
Acquired \| Minimum \| Non-Securitized
Future Minimum Payments Receivable [Line Items]
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	3.00%
Acquired \| Minimum \| Securitized Vacation Ownership Notes Receivable
Future Minimum Payments Receivable [Line Items]
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	6.00%
Acquired \| Maximum
Future Minimum Payments Receivable [Line Items]
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	17.90%
Acquired \| Maximum \| Non-Securitized
Future Minimum Payments Receivable [Line Items]
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	17.90%
Acquired \| Maximum \| Securitized Vacation Ownership Notes Receivable
Future Minimum Payments Receivable [Line Items]
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	15.90%
Originated
Future Minimum Payments Receivable [Line Items]
2020	$ 86
2021	167
2022	167
2023	166
2024	166
Thereafter	899
Total Vacation ownership notes receivable, net of reserve	1,651
Originated \| Non-Securitized
Future Minimum Payments Receivable [Line Items]
2020	17
2021	26
2022	22
2023	18
2024	16
Thereafter	89
Total Vacation ownership notes receivable, net of reserve	188
Originated \| Securitized Vacation Ownership Notes Receivable
Future Minimum Payments Receivable [Line Items]
2020	69
2021	141
2022	145
2023	148
2024	150
Thereafter	810
Total Vacation ownership notes receivable, net of reserve	$ 1,463
Originated \| Weighted Average
Future Minimum Payments Receivable [Line Items]
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	12.60%
Originated \| Weighted Average \| Non-Securitized
Future Minimum Payments Receivable [Line Items]
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	12.10%
Originated \| Weighted Average \| Securitized Vacation Ownership Notes Receivable
Future Minimum Payments Receivable [Line Items]
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	12.70%
Originated \| Minimum
Future Minimum Payments Receivable [Line Items]
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	0.00%
Originated \| Minimum \| Non-Securitized
Future Minimum Payments Receivable [Line Items]
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	0.00%
Originated \| Minimum \| Securitized Vacation Ownership Notes Receivable
Future Minimum Payments Receivable [Line Items]
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	0.00%
Originated \| Maximum
Future Minimum Payments Receivable [Line Items]
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	18.00%
Originated \| Maximum \| Non-Securitized
Future Minimum Payments Receivable [Line Items]
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	18.00%
Originated \| Maximum \| Securitized Vacation Ownership Notes Receivable
Future Minimum Payments Receivable [Line Items]
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	17.50%

Amount of notes receivable related to time share sales, net of allowance for uncollectible accounts and deferred profit.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 978
-SubTopic 310
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=68077313&loc=d3e27327-108691

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Amount, before allowance for uncollectible account, of notes receivable for time-sharing transaction maturing in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 978
-SubTopic 310
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=68077313&loc=d3e27327-108691

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Amount, before allowance for uncollectible account, of notes receivable for time-sharing transaction maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount, before allowance for uncollectible account, of notes receivable for time-sharing transaction maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount, before allowance for uncollectible account, of notes receivable for time-sharing transaction maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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- Definition

Stated interest rate of notes receivable from time-sharing transactions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 978
-SubTopic 310
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=68077313&loc=d3e27327-108691

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- Definition

Time-Sharing Transaction, Notes Receivable, Maturity, after Year Four

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