v3.26.1
FAIR VALUE MEASUREMENTS - Schedule of Assets and Liabilities on Recurring Basis (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale $ 3,758 $ 3,727
Loans held for sale 282 514 [1]
Loans receivable 96 85
Derivative financial instruments 87 122
Derivative financial instruments 196 208
U.S. Treasury    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 377 356
U.S. government agencies    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 29 35
U.S. GSE    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 264 266
Agency MBS    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 758 800
Agency CMO    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 536 601
Agency commercial MBS    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 1,703 1,599
States of the U.S. and political subdivisions (municipals)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 10 19
Other debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 81 51
Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 377 356
Loans receivable 0 0
Derivative financial instruments 0 0
Derivative financial instruments 0 0
Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 3,381 3,371
Loans receivable 282 514
Derivative financial instruments 84 115
Derivative financial instruments 196 208
Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Loans receivable 34,926 33,806
Derivative financial instruments 3 7
Derivative financial instruments 0 0
Fair Value, Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 3,758 3,727
Loans held for sale 282 514
Loans receivable 96 85
Derivative financial instruments 87 122
Total assets measured at fair value on a recurring basis 4,223 4,448
Derivative financial instruments 196 208
Total liabilities measured at fair value on a recurring basis 196 208
Fair Value, Recurring | U.S. Treasury    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 377 356
Fair Value, Recurring | U.S. government agencies    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 29 35
Fair Value, Recurring | U.S. GSE    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 264 266
Fair Value, Recurring | Agency MBS    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 758 800
Fair Value, Recurring | Agency CMO    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 536 601
Fair Value, Recurring | Agency commercial MBS    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 1,703 1,599
Fair Value, Recurring | States of the U.S. and political subdivisions (municipals)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 10 19
Fair Value, Recurring | Other debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 81 51
Fair Value, Recurring | Trading    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative financial instruments 190 207
Fair Value, Recurring | Not for trading    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative financial instruments 6 1
Fair Value, Recurring | Trading    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative financial instruments 83 102
Fair Value, Recurring | Not for trading    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative financial instruments 4 20
Fair Value, Recurring | Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 377 356
Loans held for sale 0 0
Loans receivable 0 0
Derivative financial instruments 0 0
Total assets measured at fair value on a recurring basis 377 356
Derivative financial instruments 0 0
Total liabilities measured at fair value on a recurring basis 0 0
Fair Value, Recurring | Level 1 | U.S. Treasury    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 377 356
Fair Value, Recurring | Level 1 | U.S. government agencies    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 1 | U.S. GSE    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 1 | Agency MBS    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 1 | Agency CMO    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 1 | Agency commercial MBS    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 1 | States of the U.S. and political subdivisions (municipals)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 1 | Other debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 1 | Trading    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative financial instruments 0 0
Fair Value, Recurring | Level 1 | Not for trading    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative financial instruments 0 0
Fair Value, Recurring | Level 1 | Trading    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative financial instruments 0 0
Fair Value, Recurring | Level 1 | Not for trading    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative financial instruments 0 0
Fair Value, Recurring | Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 3,381 3,371
Loans held for sale 282 514
Loans receivable 0 0
Derivative financial instruments 84 115
Total assets measured at fair value on a recurring basis 3,747 4,000
Derivative financial instruments 196 208
Total liabilities measured at fair value on a recurring basis 196 208
Fair Value, Recurring | Level 2 | U.S. Treasury    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 2 | U.S. government agencies    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 29 35
Fair Value, Recurring | Level 2 | U.S. GSE    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 264 266
Fair Value, Recurring | Level 2 | Agency MBS    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 758 800
Fair Value, Recurring | Level 2 | Agency CMO    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 536 601
Fair Value, Recurring | Level 2 | Agency commercial MBS    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 1,703 1,599
Fair Value, Recurring | Level 2 | States of the U.S. and political subdivisions (municipals)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 10 19
Fair Value, Recurring | Level 2 | Other debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 81 51
Fair Value, Recurring | Level 2 | Trading    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative financial instruments 190 207
Fair Value, Recurring | Level 2 | Not for trading    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative financial instruments 6 1
Fair Value, Recurring | Level 2 | Trading    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative financial instruments 83 102
Fair Value, Recurring | Level 2 | Not for trading    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative financial instruments 1 13
Fair Value, Recurring | Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Loans held for sale 0 0
Loans receivable 96 85
Derivative financial instruments 3 7
Total assets measured at fair value on a recurring basis 99 92
Derivative financial instruments 0 0
Total liabilities measured at fair value on a recurring basis 0 0
Fair Value, Recurring | Level 3 | U.S. Treasury    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 3 | U.S. government agencies    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 3 | U.S. GSE    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 3 | Agency MBS    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 3 | Agency CMO    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 3 | Agency commercial MBS    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 3 | States of the U.S. and political subdivisions (municipals)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 3 | Other debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale 0 0
Fair Value, Recurring | Level 3 | Trading    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative financial instruments 0 0
Fair Value, Recurring | Level 3 | Not for trading    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative financial instruments 0 0
Fair Value, Recurring | Level 3 | Trading    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative financial instruments 0 0
Fair Value, Recurring | Level 3 | Not for trading    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative financial instruments $ 3 $ 7
[1] Amount represents loans for which we have elected the fair value option. See Note 19.