SEGMENT INFORMATION (Tables)	12 Months Ended
SEGMENT INFORMATION (Tables)	Dec. 31, 2023
SEGMENT INFORMATION [Abstract]
Schedule Of Segment Reporting Information By Segment [Text Block]	Mortgage Banking Consumer (Retail) Banking Commercial and Corporate Banking Treasury and Investments United States Operations Virgin Islands Operations Total (In thousands) Year Ended December 31, 2023 Interest income $ 126,625 $ 354,970 $ 265,395 $ 116,382 $ 132,490 $ 27,624 $ 1,023,486 Net (charge) credit for transfer of funds (47,915) 356,262 (210,737) (93,405) (4,205) - - Interest expense - (135,796) - (36,893) (48,862) (4,825) (226,376) Net interest income (loss) 78,710 575,436 54,658 (13,916) 79,423 22,799 797,110 Provision for credit losses - (benefit) expense (7,531) 65,887 (6,189) 20 8,687 66 60,940 Non-interest income 11,400 83,241 21,277 2,038 6,697 8,041 132,694 Direct non-interest expenses 23,469 173,158 39,718 3,799 34,682 27,900 302,726 Segment income (loss) $ 74,172 $ 419,632 $ 42,406 $ (15,697) $ 42,751 $ 2,874 $ 566,138 Average earnings assets $ 2,143,179 $ 3,295,486 $ 3,780,195 $ 6,186,018 $ 2,072,292 $ 389,489 $ 17,866,659 Mortgage Banking Consumer (Retail) Banking Commercial and Corporate Banking Treasury and Investments United States Operations Virgin Islands Operations Total (In thousands) Year Ended December 31, 2022 Interest income $ 130,185 $ 302,631 $ 205,888 $ 104,215 $ 94,782 $ 24,913 $ 862,614 Net (charge) credit for transfer of funds (31,265) 173,917 (96,066) (43,838) (2,748) - - Interest expense - (33,924) - (20,777) (11,549) (1,071) (67,321) Net interest income 98,920 442,624 109,822 39,600 80,485 23,842 795,293 Provision for credit losses - (benefit) expense (7,643) 57,123 (20,241) (434) (3,073) 1,964 27,696 Non-interest income (loss) 15,950 78,457 18,189 (74) 2,860 7,710 123,092 Direct non-interest expenses 23,049 162,663 37,131 3,702 33,365 27,911 287,821 Segment income $ 99,464 $ 301,295 $ 111,121 $ 36,258 $ 53,053 $ 1,677 $ 602,868 Average earnings assets $ 2,233,245 $ 2,918,800 $ 3,626,107 $ 7,300,208 $ 2,069,030 $ 369,504 $ 18,516,894 Mortgage Banking Consumer (Retail) Banking Commercial and Corporate Banking Treasury and Investments United States Operations Virgin Islands Operations Total (In thousands) Year ended December 31, 2021: Interest income $ 144,203 $ 271,127 $ 201,684 $ 67,841 $ 82,194 $ 27,659 $ 794,708 Net (charge) credit for transfer of funds (39,565) 38,859 (9,767) 14,687 (4,214) - - Interest expense - (28,283) - (23,197) (12,013) (1,286) (64,779) Net interest income 104,638 281,703 191,917 59,331 65,967 26,373 729,929 Provision for credit losses - (benefit) expense (16,030) 20,322 (67,544) (136) (975) (1,335) (65,698) Non-interest income 24,278 69,774 16,032 227 3,963 6,890 121,164 Direct non-interest expenses 29,125 165,357 36,219 4,093 33,902 28,084 296,780 Segment income $ 115,821 $ 165,798 $ 239,274 $ 55,601 $ 37,003 $ 6,514 $ 620,011 Average earnings assets $ 2,506,365 $ 2,551,278 $ 3,793,945 $ 7,827,326 $ 2,126,528 $ 430,499 $ 19,235,941
Reconciliation of the Reportable Segment Financial Information [Table Text Block]	The following table presents a reconciliation of the reportable segment financial information to the consolidated totals for the indicated periods: Year Ended December 31, 2023 2022 2021 (In thousands) Net income: Total income for segments $ 566,138 $ 602,868 $ 620,011 Other operating expenses (1) 168,702 155,284 192,194 Income before income taxes 397,436 447,584 427,817 Income tax expense 94,572 142,512 146,792 Total consolidated net income $ 302,864 $ 305,072 $ 281,025 Average assets: Total average earning assets for segments $ 17,866,659 $ 18,516,894 $ 19,235,941 Average non-earning assets 839,764 861,755 1,067,092 Total consolidated average assets $ 18,706,423 $ 19,378,649 $ 20,303,033 (1) Expenses pertaining to corporate administrative functions that support the operating segment, but are not specifically attributable to or managed by any segment, are not included in the reported financial results of the operating segments. The unallocated corporate expenses include certain general and administrative expenses and related depreciation and amortization expenses.
Schedule of revenues and selected balance sheet data by geography [Table Text Block]	The following table presents revenues (interest income plus non-interest income) and selected balance sheet data by geography based on the location in which the transaction was originated as of the indicated dates: 2023 2022 2021 (In thousands) Revenues: Puerto Rico $ 981,328 $ 855,441 $ 795,166 United States 139,187 97,642 86,157 Virgin Islands 35,665 32,623 34,549 Total consolidated revenues $ 1,156,180 $ 985,706 $ 915,872 Selected Balance Sheet Information: Total assets: Puerto Rico $ 16,308,000 $ 16,020,987 $ 18,175,910 United States 2,141,427 2,213,333 2,189,440 Virgin Islands 460,122 400,164 419,925 Loans: Puerto Rico $ 9,745,872 $ 9,097,013 $ 8,755,434 United States 2,022,261 2,088,351 1,948,716 Virgin Islands 424,718 379,767 391,663 Deposits: Puerto Rico (1) $ 13,429,303 $ 12,933,570 $ 14,113,874 United States (2) 1,631,402 1,623,725 1,928,749 Virgin Islands 1,495,280 1,586,172 1,742,271 (1) For 2023, 2022, and 2021, includes $ 420.2 million, $ 1.4 million, and $ 34.2 million, respectively, of brokered CDs allocated to Puerto Rico operations. (2) For 2023, 2022, and 2021 includes $ 363.1 million, $ 104.4 million, and $ 66.2 million, respectively, of brokered CDs allocated to United States operations.