Fair value of financial instruments (Tables)	12 Months Ended
Fair value of financial instruments (Tables)	Dec. 31, 2023
Fair Value Disclosures
Carrying amount and estimated fair value of financial instruments with corresponding level in the fair value hierarchy	The following tables present the carrying amount and estimated fair values of financial instruments with their corresponding level in the fair value hierarchy. The aggregate fair value amounts of the financial instruments disclosed do not represent management’s estimate of the underlying value of the Corporation. December 31, 2023 Carrying Measured (In thousands) amount Level 1 Level 2 Level 3 at NAV Fair value Financial Assets: Cash and due from banks $ 420,462 $ 420,462 $ - $ - $ - $ 420,462 Money market investments 6,998,871 6,991,758 7,113 - - 6,998,871 Trading account debt securities, excluding derivatives [1] 31,568 16,859 14,425 284 - 31,568 Debt securities available-for-sale [1] 16,729,044 3,936,036 12,789,902 3,106 - 16,729,044 Debt securities held-to-maturity: U.S. Treasury securities $ 8,121,411 $ - $ 8,092,339 $ - $ - $ 8,092,339 Obligations of Puerto Rico, States and political subdivisions 59,628 - 7,007 52,671 - 59,678 Collateralized mortgage obligation-federal agency 1,556 - 1,395 13 - 1,408 Securities in wholly owned statutory business trusts 5,960 - 5,960 - - 5,960 Total debt securities held-to-maturity $ 8,188,555 $ - $ 8,106,701 $ 52,684 $ - $ 8,159,385 Equity securities: FHLB stock $ 49,549 $ - $ 49,549 $ - $ - $ 49,549 FRB stock 98,948 - 98,948 - - 98,948 Other investments 45,229 - 37,965 7,869 310 46,144 Total equity securities $ 193,726 $ - $ 186,462 $ 7,869 $ 310 $ 194,641 Loans held-for-sale $ 4,301 $ - $ 4,328 $ - $ - $ 4,328 Loans held-in-portfolio 34,335,630 - - 33,376,255 - 33,376,255 Mortgage servicing rights 118,109 - - 118,109 - 118,109 Derivatives 24,419 - 24,419 - - 24,419 December 31, 2023 Carrying Measured (In thousands) amount Level 1 Level 2 Level 3 at NAV Fair value Financial Liabilities: Deposits: Demand deposits $ 55,116,351 $ - $ 55,116,351 $ - $ - $ 55,116,351 Time deposits 8,501,892 - 8,154,823 - - 8,154,823 Total deposits $ 63,618,243 $ - $ 63,271,174 $ - $ - $ 63,271,174 Assets sold under agreements to repurchase $ 91,384 $ - $ 91,386 $ - $ - $ 91,386 Notes payable: FHLB advances $ 394,665 $ - $ 377,851 $ - $ - $ 377,851 Unsecured senior debt securities 393,937 - 400,848 - - 400,848 Junior subordinated deferrable interest debentures (related to trust preferred securities) 198,346 - 180,076 - - 180,076 Total notes payable $ 986,948 $ - $ 958,775 $ - $ - $ 958,775 Derivatives $ 21,103 $ - $ 21,103 $ - $ - $ 21,103 [1] Refer to Note 28 to the Consolidated Financial Statements for the fair value by class of financial asset and its hierarchy level. December 31, 2022 Carrying Measured (In thousands) amount Level 1 Level 2 Level 3 at NAV Fair value Financial Assets: Cash and due from banks $ 469,501 $ 469,501 $ - $ - $ - $ 469,501 Money market investments 5,614,595 5,607,937 6,658 - - 5,614,595 Trading account debt securities, excluding derivatives [1] 27,723 13,069 14,119 535 - 27,723 Debt securities available-for-sale [1] 17,804,374 1,908,589 15,894,074 1,711 - 17,804,374 Debt securities held-to-maturity: U.S. Treasury securities $ 8,453,467 $ - $ 8,372,601 $ - $ - $ 8,372,601 Obligations of Puerto Rico, States and political subdivisions 59,010 - - 61,617 - 61,617 Collateralized mortgage obligation-federal agency 19 - - 19 - 19 Securities in wholly owned statutory business trusts 5,959 - 5,959 - - 5,959 Total debt securities held-to-maturity $ 8,518,455 $ - $ 8,378,560 $ 61,636 $ - $ 8,440,196 Equity securities: FHLB stock $ 65,861 $ - $ 65,861 $ - $ - $ 65,861 FRB stock 96,206 - 96,206 - - 96,206 Other investments 33,787 - 29,302 4,966 330 34,598 Total equity securities $ 195,854 $ - $ 191,369 $ 4,966 $ 330 $ 196,665 Loans held-for-sale $ 5,381 $ - $ - $ 5,404 $ - $ 5,404 Loans held-in-portfolio 31,357,467 - - 29,366,365 - 29,366,365 Mortgage servicing rights 128,350 - - 128,350 - 128,350 Derivatives 19,229 - 19,229 - - 19,229 December 31, 2022 Carrying Measured (In thousands) amount Level 1 Level 2 Level 3 at NAV Fair value Financial Liabilities: Deposits: Demand deposits $ 54,445,825 $ - $ 54,445,825 $ - $ - $ 54,445,825 Time deposits 6,781,402 - 6,464,943 - - 6,464,943 Total deposits $ 61,227,227 $ - $ 60,910,768 $ - $ - $ 60,910,768 Assets sold under agreements to repurchase $ 148,609 $ - $ 148,566 $ - $ - $ 148,566 Other short-term borrowings [2] 365,000 - 365,000 - - 365,000 Notes payable: FHLB advances $ 389,282 $ - $ 361,951 $ - $ - $ 361,951 Unsecured senior debt securities 299,109 - 300,027 - - 300,027 Junior subordinated deferrable interest debentures (related to trust preferred securities) 198,319 - 173,938 - - 173,938 Total notes payable $ 886,710 $ - $ 835,916 $ - $ - $ 835,916 Derivatives $ 17,000 $ - $ 17,000 $ - $ - $ 17,000 [1] Refer to Note 28 to the Consolidated Financial Statements for the fair value by class of financial asset and its hierarchy level. [2] Refer to Note 17 to the Consolidated Financial Statements for the composition of other short-term borrowings.