NOTES PAYABLE - Narrative (Details) - USD ($) $ in Billions	9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
Debt Instrument [Line Items]
Medium term notes called during the period	$ 1.9	$ 1.7
Maximum borrowing capacity from U.S. Treasury	$ 1.5
Discount notes
Debt Instrument [Line Items]
Maturities of notes	1 year
Maximum amount of discount notes outstanding at any month end	$ 2.2	$ 2.1
Medium-term notes | Minimum
Debt Instrument [Line Items]
Maturities of notes	6 months
Medium-term notes | Maximum
Debt Instrument [Line Items]
Maturities of notes	25 years