Fair value of financial instruments (Tables)	6 Months Ended
Fair value of financial instruments (Tables)	Jun. 30, 2025
Fair Value Disclosures
Carrying amount and estimated fair value of financial instruments with corresponding level in the fair value hierarchy	June 30, 2025 Carrying Measured (In thousands) amount Level 1 Level 2 Level 3 at NAV Fair value Financial Assets: Cash and due from banks $ 400,631 $ 400,631 $ - $ - $ - $ 400,631 Money market investments 6,340,786 6,330,415 10,371 - - 6,340,786 Trading account debt securities, excluding derivatives [1] 29,643 5,813 23,624 206 - 29,643 Debt securities available-for-sale [1] 20,490,212 7,908,859 12,580,171 1,182 - 20,490,212 Debt securities held-to-maturity: U.S. Treasury securities $ 7,479,657 $ - $ 7,499,064 $ - $ - $ 7,499,064 Obligations of Puerto Rico, States and political subdivisions 48,598 - 6,820 42,361 - 49,181 Collateralized mortgage obligation-federal agency 1,510 - 1,312 - - 1,312 Securities in wholly owned statutory business trusts 5,960 - 5,960 - - 5,960 Total debt securities held-to-maturity $ 7,535,725 $ - $ 7,513,156 $ 42,361 $ - $ 7,555,517 Equity securities: FHLB stock $ 66,152 $ - $ 66,152 $ - $ - $ 66,152 FRB stock 101,252 - 101,252 - - 101,252 Other investments 54,987 - 47,009 8,047 447 55,503 Total equity securities $ 222,391 $ - $ 214,413 $ 8,047 $ 447 $ 222,907 Loans held-for-sale $ 2,898 $ - $ 2,898 $ - $ - $ 2,898 Loans held-in-portfolio 37,415,693 - - 36,611,781 - 36,611,781 Mortgage servicing rights 103,077 - - 103,077 - 103,077 Derivatives 24,792 - 24,792 - - 24,792 June 30, 2025 Carrying Measured (In thousands) amount Level 1 Level 2 Level 3 at NAV Fair value Financial Liabilities: Deposits: Demand deposits $ 57,618,705 $ - $ 57,618,705 $ - $ - $ 57,618,705 Time deposits 9,598,786 - 9,378,576 - - 9,378,576 Total deposits $ 67,217,491 $ - $ 66,997,281 $ - $ - $ 66,997,281 Assets sold under agreements to repurchase $ 56,043 $ - $ 56,049 $ - $ - $ 56,049 Other short-term borrowings [2] 550,000 - 550,000 - - 550,000 Notes payable: FHLB advances $ 214,200 $ - $ 211,087 $ - $ - $ 211,087 Unsecured senior debt securities 395,865 - 416,044 - - 416,044 Junior subordinated deferrable interest debentures (related to trust preferred securities) 198,386 - 187,515 - - 187,515 Total notes payable $ 808,451 $ - $ 814,646 $ - $ - $ 814,646 Derivatives $ 23,349 $ - $ 23,349 $ - $ - $ 23,349 [1] Refer to Note 23 to the Consolidated Financial Statements for the fair value by class of financial asset and its hierarchy level. [2] Refer to Note 15 to the Consolidated Financial Statements for the composition of other short-term borrowings. 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 23 to the Consolidated Financial Statements for the fair value by class of financial asset and its hierarchy level. [2] Refer to Note 15 to the Consolidated Financial Statements for the composition of other short-term borrowings.