Debt securities available-for-sale (Tables)	12 Months Ended
Debt securities available-for-sale (Tables)	Dec. 31, 2022
Investments [Abstract]
Debt Securities, Available-For-Sale	At December 31, 2022 Gross Gross Weighted Amortized unrealized unrealized Fair average (In thousands) cost gains losses value yield U.S. Treasury securities Within 1 year $ 4,576,127 $ 506 $ 47,156 $ 4,529,477 2.42 % After 1 to 5 years 6,793,739 - 410,858 6,382,881 1.35 After 5 to 10 years 308,854 - 40,264 268,590 1.63 Total U.S. Treasury securities 11,678,720 506 498,278 11,180,948 1.78 Collateralized mortgage obligations - federal agencies After 1 to 5 years 3,914 - 213 3,701 1.77 After 5 to 10 years 47,979 - 3,428 44,551 1.73 After 10 years 127,639 24 10,719 116,944 2.53 Total collateralized mortgage obligations - federal agencies 179,532 24 14,360 165,196 2.30 Mortgage-backed securities After 1 to 5 years 74,328 11 3,428 70,911 2.33 After 5 to 10 years 866,757 43 58,997 807,803 2.16 After 10 years 6,762,150 932 1,184,626 5,578,456 1.61 Total mortgage-backed securities 7,703,235 986 1,247,051 6,457,170 1.68 Other After 1 to 5 years 1,062 - 2 1,060 3.98 Total other 1,062 - 2 1,060 3.98 Total debt securities available-for-sale [1] $ 19,562,549 $ 1,516 $ 1,759,691 $ 17,804,374 1.75 % [1] Includes $ 11.3 billion pledged to secure government and trust deposits, assets sold under agreements to repurchase, credit facilities and loan servicing agreements that the secured parties are not permitted to sell or repledge the collateral, of which $ 10.3 billion serve as collateral for public funds. At December 31, 2021 Gross Gross Weighted Amortized unrealized unrealized Fair average (In thousands) cost gains losses value yield U.S. Treasury securities Within 1 year $ 1,225,558 $ 13,556 $ 69 $ 1,239,045 2.33 % After 1 to 5 years 10,059,163 98,808 65,186 10,092,785 1.18 After 5 to 10 years 4,563,265 739 36,804 4,527,200 1.22 Total U.S. Treasury securities 15,847,986 113,103 102,059 15,859,030 1.27 Obligations of U.S. Government sponsored entities Within 1 year 70 - - 70 5.63 Total obligations of U.S. Government sponsored entities 70 - - 70 5.63 Collateralized mortgage obligations - federal agencies After 1 to 5 years 2,433 42 - 2,475 2.16 After 5 to 10 years 43,241 295 6 43,530 1.54 After 10 years 172,176 3,441 357 175,260 2.13 Total collateralized mortgage obligations - federal agencies 217,850 3,778 363 221,265 2.01 Mortgage-backed securities Within 1 year 11 1 - 12 4.79 After 1 to 5 years 65,749 2,380 11 68,118 2.23 After 5 to 10 years 665,600 17,998 5 683,593 1.97 After 10 years 8,263,835 68,128 195,910 8,136,053 1.67 Total mortgage-backed securities 8,995,195 88,507 195,926 8,887,776 1.69 Other After 1 to 5 years 123 5 - 128 3.62 Total other 123 5 - 128 3.62 Total debt securities available-for-sale [1] $ 25,061,224 $ 205,393 $ 298,348 $ 24,968,269 1.42 % [1] Includes $ 22 .0 billion pledged to secure government and trust deposits, assets sold under agreements to repurchase, credit facilities and loan servicing agreements that the secured parties are not permitted to sell or repledge the collateral, of which $ 20.9 billion serve as collateral for public funds.
Schedule Of Aggregate Amortized Cost And Fair Value Of Afs By Contractual Maturity	(In thousands) Amortized cost Fair value Within 1 year $ 4,576,127 $ 4,529,477 After 1 to 5 years 6,873,043 6,458,553 After 5 to 10 years 1,223,590 1,120,944 After 10 years 6,889,789 5,695,400 Total debt securities available-for-sale $ 19,562,549 $ 17,804,374
Schedule Of Realized Gain Loss	(In thousands) 2022 2021 2020 Gross realized gains $ - $ 695 $ 41 Gross realized losses - (672) - Net realized gains (losses) on sale of debt securities available -for-sale $ - $ 23 $ 41
Debt Securities Available For Sale Unrealized Loss Position Fair Value	At December 31, 2022 Less than 12 months 12 months or more Total Gross Gross Gross Fair unrealized Fair unrealized Fair unrealized (In thousands) value losses value losses value losses U.S. Treasury securities $ 6,027,786 $ 288,582 $ 3,244,572 $ 209,696 $ 9,272,358 $ 498,278 Collateralized mortgage obligations - federal agencies 139,845 10,655 22,661 3,705 162,506 14,360 Mortgage-backed securities 1,740,214 138,071 4,662,195 1,108,980 6,402,409 1,247,051 Other 60 2 - - 60 2 Total debt securities available-for-sale in an unrealized loss position $ 7,907,905 $ 437,310 $ 7,929,428 $ 1,322,381 $ 15,837,333 $ 1,759,691 At December 31, 2021 Less than 12 months 12 months or more Total Gross Gross Gross Fair unrealized Fair unrealized Fair unrealized (In thousands) value losses value losses value losses U.S. Treasury securities $ 9,590,448 $ 102,059 $ - $ - $ 9,590,448 $ 102,059 Collateralized mortgage obligations - federal agencies 35,533 334 1,084 29 36,617 363 Mortgage-backed securities 5,767,556 170,614 595,051 25,312 6,362,607 195,926 Total debt securities available-for-sale in an unrealized loss position $ 15,393,537 $ 273,007 $ 596,135 $ 25,341 $ 15,989,672 $ 298,348