ALLOWANCE FOR CREDIT LOSSES - Schedule of Allowance for Credit Losses of Brokerage Related (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Provision for credit losses			$ 34	$ 15
Brokerage Related Receivables
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 19	$ 20	15	18
Provision for credit losses	4	6	10	15
Write-offs	(8)	(6)	(10)	(13)
Ending balance	$ 15	$ 20	$ 15	$ 20