Fair value of financial instruments (Tables)	12 Months Ended
Fair value of financial instruments (Tables)	Dec. 31, 2024
Fair Value Disclosures
Carrying amount and estimated fair value of financial instruments with corresponding level in the fair value hierarchy	December 31, 2024 Carrying Measured (In thousands) amount Level 1 Level 2 Level 3 at NAV Fair value Financial Assets: Cash and due from banks $ 419,638 $ 419,638 $ - $ - $ - $ 419,638 Money market investments 6,380,948 6,371,180 9,768 - - 6,380,948 Trading account debt securities, excluding derivatives [1] 32,783 2,814 29,752 217 - 32,783 Debt securities available-for-sale [1] 18,245,903 7,512,171 10,730,998 2,734 - 18,245,903 Debt securities held-to-maturity: U.S. Treasury securities $ 7,693,418 $ - $ 7,623,824 $ - $ - $ 7,623,824 Obligations of Puerto Rico, States and political subdivisions 51,865 - 6,866 44,711 - 51,577 Collateralized mortgage obligation-federal agency 1,518 - 1,304 - - 1,304 Securities in wholly owned statutory business trusts 5,959 - 5,959 - - 5,959 Total debt securities held-to-maturity $ 7,752,760 $ - $ 7,637,953 $ 44,711 $ - $ 7,682,664 Equity securities: FHLB stock $ 55,786 $ - $ 55,786 $ - $ - $ 55,786 FRB stock 100,304 - 100,304 - - 100,304 Other investments 52,076 - 45,664 6,528 381 52,573 Total equity securities $ 208,166 $ - $ 201,754 $ 6,528 $ 381 $ 208,663 Loans held-for-sale $ 5,423 $ - $ 5,423 $ - $ - $ 5,423 Loans held-in-portfolio 36,361,628 - - 35,652,539 - 35,652,539 Mortgage servicing rights 108,103 - - 108,103 - 108,103 Derivatives 26,023 - 26,023 - - 26,023 December 31, 2024 Carrying Measured (In thousands) amount Level 1 Level 2 Level 3 at NAV Fair value Financial Liabilities: Deposits: Demand deposits $ 55,871,463 $ - $ 55,871,463 $ - $ - $ 55,871,463 Time deposits 9,012,882 - 8,795,803 - - 8,795,803 Total deposits $ 64,884,345 $ - $ 64,667,266 $ - $ - $ 64,667,266 Assets sold under agreements to repurchase $ 54,833 $ - $ 54,845 $ - $ - $ 54,845 Other short-term borrowings [2] 225,000 - 225,000 - - 225,000 Notes payable: FHLB advances $ 302,722 $ - $ 295,023 $ - $ - $ 295,023 Unsecured senior debt securities 395,198 - 415,148 - - 415,148 Junior subordinated deferrable interest debentures (related to trust preferred securities) 198,373 - 189,758 - - 189,758 Total notes payable $ 896,293 $ - $ 899,929 $ - $ - $ 899,929 Derivatives $ 22,832 $ - $ 22,832 $ - $ - $ 22,832 [1] Refer to Note 27 to the Consolidated Financial Statements for the fair value by class of financial asset and its hierarchy level. [2] Refer to Note 16 to the Consolidated Financial Statements for the composition of other short-term borrowings. 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 27 to the Consolidated Financial Statements for the fair value by class of financial asset and its hierarchy level.