CREDIT CARD AND OTHER LOANS - Schedule of Information Relating To Credit Card Loans To Borrowers (Details) - Credit Card Loans - Contractual Interest Rate Reduction - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Financing Receivable, Troubled Debt Restructuring [Line Items]
Account balance	$ 90	$ 100	$ 251	$ 258
% of Total credit card loans	0.50%	0.60%	1.40%	1.50%
Weighted average interest rate reduction (% points)	23.90%	23.20%	23.90%	23.10%

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