VACATION OWNERSHIP NOTES RECEIVABLE - Future Principal Payments, Net of Reserves, and Interest Rates of Vacation Ownership Notes Receivable (Details) $ in Millions	Jun. 30, 2025 USD ($)
Originated
Future Minimum Payments Receivable [Line Items]
2025, remaining	$ 125
2026	224
2027	221
2028	221
2029	213
Thereafter	1,396
Balance at Mar 31, 2024	$ 2,400
Originated \| Weighted Average
Future Minimum Payments Receivable [Line Items]
Time-sharing transactions, stated interest rate for notes receivable	12.90%
Originated \| Minimum
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	20.90%
Originated \| Non-securitized
Future Minimum Payments Receivable [Line Items]
2025, remaining	$ 52
2026	72
2027	61
2028	54
2029	44
Thereafter	227
Balance at Mar 31, 2024	$ 510
Originated \| Non-securitized \| Weighted Average
Future Minimum Payments Receivable [Line Items]
Time-sharing transactions, stated interest rate for notes receivable	11.60%
Originated \| Non-securitized \| Minimum
Future Minimum Payments Receivable [Line Items]
Time-sharing transactions, stated interest rate for notes receivable	0.00%
Originated \| Non-securitized \| Maximum
Future Minimum Payments Receivable [Line Items]
Time-sharing transactions, stated interest rate for notes receivable	20.90%
Originated \| Securitized
Future Minimum Payments Receivable [Line Items]
2025, remaining	$ 73
2026	152
2027	160
2028	167
2029	169
Thereafter	1,169
Balance at Mar 31, 2024	$ 1,890
Originated \| Securitized \| Weighted Average
Future Minimum Payments Receivable [Line Items]
Time-sharing transactions, stated interest rate for notes receivable	13.30%
Originated \| Securitized \| Minimum
Future Minimum Payments Receivable [Line Items]
Time-sharing transactions, stated interest rate for notes receivable	0.00%
Originated \| Securitized \| Maximum
Future Minimum Payments Receivable [Line Items]
Time-sharing transactions, stated interest rate for notes receivable	20.90%
Acquired
Future Minimum Payments Receivable [Line Items]
2025, remaining	$ 14
2026	22
2027	17
2028	11
2029	7
Thereafter	14
Balance at Mar 31, 2024	$ 85
Acquired \| Weighted Average
Future Minimum Payments Receivable [Line Items]
Time-sharing transactions, stated interest rate for notes receivable	14.10%
Acquired \| Minimum
Future Minimum Payments Receivable [Line Items]
Time-sharing transactions, stated interest rate for notes receivable	0.00%
Acquired \| Maximum
Future Minimum Payments Receivable [Line Items]
Time-sharing transactions, stated interest rate for notes receivable	21.90%
Acquired \| Non-securitized
Future Minimum Payments Receivable [Line Items]
2025, remaining	$ 4
2026	3
2027	2
2028	1
2029	1
Thereafter	1
Balance at Mar 31, 2024	$ 12
Acquired \| Non-securitized \| Weighted Average
Future Minimum Payments Receivable [Line Items]
Time-sharing transactions, stated interest rate for notes receivable	13.80%
Acquired \| Non-securitized \| Minimum
Future Minimum Payments Receivable [Line Items]
Time-sharing transactions, stated interest rate for notes receivable	0.00%
Acquired \| Non-securitized \| Maximum
Future Minimum Payments Receivable [Line Items]
Time-sharing transactions, stated interest rate for notes receivable	21.90%
Acquired \| Securitized
Future Minimum Payments Receivable [Line Items]
2025, remaining	$ 10
2026	19
2027	15
2028	10
2029	6
Thereafter	13
Balance at Mar 31, 2024	$ 73
Acquired \| Securitized \| Weighted Average
Future Minimum Payments Receivable [Line Items]
Time-sharing transactions, stated interest rate for notes receivable	14.20%
Acquired \| Securitized \| Minimum
Future Minimum Payments Receivable [Line Items]
Time-sharing transactions, stated interest rate for notes receivable	0.00%
Acquired \| Securitized \| Maximum
Future Minimum Payments Receivable [Line Items]
Time-sharing transactions, stated interest rate for notes receivable	21.90%

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
-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

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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).

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- Definition

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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- Definition

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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- Definition

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).

+ References

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- Definition

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

+ References

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

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- Definition

Future Minimum Payments Receivable [Line Items]

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- Definition

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

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- Definition

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