VACATION OWNERSHIP NOTES RECEIVABLE - Future Principal Payments, Net of Reserves, and Interest Rates of Vacation Ownership Notes Receivable (Details) $ in Millions	Mar. 31, 2021 USD ($)
Acquired
Future Minimum Payments Receivable
2021, remaining	$ 31
2022	40
2023	40
2024	38
2025	35
Thereafter	101
Total Vacation ownership notes receivable, net of reserve	285
Acquired \| Non-Securitized
Future Minimum Payments Receivable
2021, remaining	4
2022	4
2023	4
2024	4
2025	5
Thereafter	19
Total Vacation ownership notes receivable, net of reserve	40
Acquired \| Securitized
Future Minimum Payments Receivable
2021, remaining	27
2022	36
2023	36
2024	34
2025	30
Thereafter	82
Total Vacation ownership notes receivable, net of reserve	$ 245
Acquired \| Weighted Average
Future Minimum Payments Receivable
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	13.50%
Acquired \| Weighted Average \| Non-Securitized
Future Minimum Payments Receivable
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	13.50%
Acquired \| Weighted Average \| Securitized
Future Minimum Payments Receivable
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	13.50%
Acquired \| Minimum
Future Minimum Payments Receivable
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	3.00%
Acquired \| Minimum \| Non-Securitized
Future Minimum Payments Receivable
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	3.00%
Acquired \| Minimum \| Securitized
Future Minimum Payments Receivable
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	6.00%
Acquired \| Maximum
Future Minimum Payments Receivable
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	17.90%
Acquired \| Maximum \| Non-Securitized
Future Minimum Payments Receivable
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	17.90%
Acquired \| Maximum \| Securitized
Future Minimum Payments Receivable
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	15.90%
Originated
Future Minimum Payments Receivable
2021, remaining	$ 119
2022	155
2023	153
2024	152
2025	154
Thereafter	751
Total Vacation ownership notes receivable, net of reserve	1,484
Originated \| Non-Securitized
Future Minimum Payments Receivable
2021, remaining	32
2022	37
2023	33
2024	31
2025	30
Thereafter	228
Total Vacation ownership notes receivable, net of reserve	391
Originated \| Securitized
Future Minimum Payments Receivable
2021, remaining	87
2022	118
2023	120
2024	121
2025	124
Thereafter	523
Total Vacation ownership notes receivable, net of reserve	$ 1,093
Originated \| Weighted Average
Future Minimum Payments Receivable
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	12.70%
Originated \| Weighted Average \| Non-Securitized
Future Minimum Payments Receivable
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	12.70%
Originated \| Weighted Average \| Securitized
Future Minimum Payments Receivable
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	12.70%
Originated \| Minimum
Future Minimum Payments Receivable
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	0.00%
Originated \| Minimum \| Non-Securitized
Future Minimum Payments Receivable
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	0.00%
Originated \| Minimum \| Securitized
Future Minimum Payments Receivable
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	0.00%
Originated \| Maximum
Future Minimum Payments Receivable
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	18.00%
Originated \| Maximum \| Non-Securitized
Future Minimum Payments Receivable
Time-sharing Transactions, Stated Interest Rate for Notes Receivable	18.00%
Originated \| Maximum \| Securitized
Future Minimum Payments Receivable
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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- Definition

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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