ALLOWANCE FOR CREDIT LOSSES - Schedule of Allowance for Credit Losses of Brokerage Related (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Provision for credit losses	$ 26	$ 23	$ 78	$ 57
Brokerage Related Receivables
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	20	15	14	15
Provision for credit losses	3	6	23	16
Write-offs	(5)	(6)	(21)	(16)
Recoveries	0	0	2	0
Ending Balance	$ 18	$ 15	$ 18	$ 15