ACCOUNTS RECEIVABLE - Schedule of Changes in Allowance (Details) $ in Millions	6 Months Ended
	Jun. 30, 2026 USD ($)
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance as of December 31, 2025	$ 93
Current period provision for expected credit losses	31
Write-offs charged against the allowance	(55)
Balance as of June 30, 2026	69
Fee-for-service commissions
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance as of December 31, 2025	30
Current period provision for expected credit losses	4
Write-offs charged against the allowance	(25)
Balance as of June 30, 2026	9
Real Estate Sales and Financing Segment
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance as of December 31, 2025	62
Current period provision for expected credit losses	13
Write-offs charged against the allowance	(29)
Balance as of June 30, 2026	46
Resort and club management
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance as of December 31, 2025	1
Current period provision for expected credit losses	14
Write-offs charged against the allowance	(1)
Balance as of June 30, 2026	$ 14