v3.26.3
Debt Securities - Schedule of Available for Sale Securities (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Debt    
Amortized cost [1] $ 4,415 $ 2,355
Gross unrealized gains [1] 0 15
Gross unrealized losses [1] (59) (22)
Estimated fair value [1] 4,356 2,348
U.S. government and federal agency    
Debt    
Amortized cost 3,411 1,485
Gross unrealized gains 0 7
Gross unrealized losses (17) 0
Estimated fair value 3,394 1,492
State and municipal    
Debt    
Amortized cost 53 35
Gross unrealized gains 0 0
Gross unrealized losses (3) 0
Estimated fair value 50 35
Residential mortgage-backed    
Debt Securities, Available-for-sale [Line Items]    
Residential Mortgage Backed Securities pledged as collateral to the Federal Reserve 288 470
Debt    
Amortized cost [2] 343 318
Gross unrealized gains [2] 0 1
Gross unrealized losses [2] (34) (22)
Estimated fair value [2] 309 297
Asset-backed    
Debt    
Amortized cost [3] 600 509
Gross unrealized gains [3] 0 6
Gross unrealized losses [3] (5) 0
Estimated fair value [3] 595 515
Other Debt Obligations    
Debt    
Amortized cost 8 8
Gross unrealized gains 0 1
Gross unrealized losses 0 0
Estimated fair value $ 8 $ 9
[1] At September 30, 2026 and December 31, 2025, the estimated fair value of debt securities pledged by the Bank as collateral to the Federal Reserve to secure Federal Reserve discount window advances was $288 million and $470 million, respectively.
[2] Our residential mortgage-backed securities have been issued by government-sponsored entities and are collateralized by U.S. mortgages.
[3]     Our asset-backed securities are collateralized by credit card and auto loans.