DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Narrative) (Details) - USD ($)	Sep. 30, 2024	Dec. 31, 2023
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, notional amount	$ 22,711,000,000	$ 22,148,000,000
Deferred losses	117,000,000
Derivatives (included in other liabilities)	295,000,000	333,000,000
Cash collateral pledged for derivative liabilities	4,000,000
Additional collateral that would be required to be pledge if credit rating was downgraded by one notch	0
Parent
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives (included in other liabilities)	295,000,000
Derivatives designated as hedging instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, notional amount	5,418,000,000	6,521,000,000
Other liabilities
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives (included in other liabilities)	295,000,000	333,000,000
Other liabilities | Derivatives designated as hedging instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives (included in other liabilities)	0	0
Cash Flow Hedging | Pay-Fixed, receive-floating swap | Derivatives designated as hedging instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, notional amount	3,600,000,000
Cash Flow Hedging | Asset hedges: Pay-fixed interest rate swaps | Derivatives designated as hedging instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, notional amount	1,000,000,000
Cash Flow Hedging | Receive-fixed interest rate swaps | Derivatives designated as hedging instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, notional amount	350,000,000	1,450,000,000
Cash Flow Hedging | Other liabilities | Receive-fixed interest rate swaps | Derivatives designated as hedging instruments:
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives (included in other liabilities)	$ 0	$ 0