CONTINGENCIES AND COMMITMENTS (Details) $ in Millions	Mar. 31, 2024 USD ($) vacation_ownership_unit transaction
Commitments and Contingencies Disclosure [Line Items]
Purchase commitment obligation due, remainder of 2024	$ 65
Purchase commitment obligation due, 2025	82
Purchase commitment obligation due, 2026	41
Surety bonds issued	122
Guarantor obligations, maximum exposure, remainder of year	9
Bali, Indonesia
Commitments and Contingencies Disclosure [Line Items]
Purchase commitment	$ 36
Number of transactions | transaction	2
Khao Lak, Thailand
Commitments and Contingencies Disclosure [Line Items]
Purchase commitment	$ 37
Purchase commitment obligation due, 2025	4
Purchase commitment obligation due, 2026	31
Purchase commitment obligation due, 2027	$ 2
Number of vacation ownership units, acquisition pending | vacation_ownership_unit	60
32 Unit Transaction | Bali, Indonesia
Commitments and Contingencies Disclosure [Line Items]
Purchase commitment obligation due, remainder of 2024	$ 4
Purchase commitment obligation due, 2025	10
Purchase commitment obligation due, 2026	$ 1
Number of vacation ownership units, acquisition pending | vacation_ownership_unit	32
26 Unit Transaction | Bali, Indonesia
Commitments and Contingencies Disclosure [Line Items]
Purchase commitment obligation due, remainder of 2024	$ 4
Purchase commitment obligation due, 2025	2
Purchase commitment obligation due, 2026	14
Purchase commitment obligation due, 2027	$ 1
Number of vacation ownership units, acquisition pending | vacation_ownership_unit	26
Securitization Transaction
Commitments and Contingencies Disclosure [Line Items]
Letters of credit outstanding	$ 32
Revolving corporate credit facility, net
Commitments and Contingencies Disclosure [Line Items]
Letters of credit outstanding	33
Letter of credit
Commitments and Contingencies Disclosure [Line Items]
Letters of credit outstanding	1
Exchange & Third-Party Management
Commitments and Contingencies Disclosure [Line Items]
Guarantor obligations, maximum exposure	4
Guarantor obligations, maximum exposure, remainder of year	1
Guarantor obligations, maximum exposure, due in 2025	1
Guarantor obligations, maximum exposure, due in 2026	1
Guarantor obligations, maximum exposure, due in 2027	1
Guarantor obligations, maximum exposure, due in 2028 (less than)	$ 1
Guarantor obligations, ownership percentage	95.00%
Information technology hardware and software
Commitments and Contingencies Disclosure [Line Items]
Purchase commitment	$ 81
Purchase commitment obligation due, remainder of 2024	29
Purchase commitment obligation due, 2025	26
Purchase commitment obligation due, 2026	16
Purchase commitment obligation due, 2027	6
Purchase commitment obligation due, 2028	4
Purchase commitment obligation due, thereafter (less than)	$ 1