| 2012年 3月31日 | 2013年 3月31日 | 2014年 3月31日 | 2015年 3月31日 | 2016年 3月31日 | 2017年 3月31日 | 2018年 3月31日 | 2019年 3月31日 | 2020年 3月31日 | 2021年 3月31日 | 2022年 3月31日 | 2023年 3月31日 | 2024年 3月31日 | |
| 現金預け金 | - | 648,897 | 1,451,492 | 881,776 | 1,129,213 | 1,398,691 | 1,465,663 | 1,355,966 | 1,614,134 | 1,919,075 | 1,625,159 | 1,992,878 | 3,273,282 |
| コールローン及び買入手形 | - | 18,806 | 36,451 | 30,000 | - | 4,472 | - | - | - | - | - | 28,302 | 44,698 |
| 買入金銭債権 | - | 112,318 | 105,857 | 93,412 | 81,763 | 44,243 | 36,332 | 30,994 | 63,575 | 46,187 | 31,512 | 38,287 | 90,771 |
| 特定取引資産 | - | 287,907 | 249,115 | 317,399 | 336,345 | 244,113 | 205,295 | 204,415 | 213,707 | 170,376 | 149,014 | 166,722 | 200,096 |
| 金銭の信託 | - | 233,847 | 199,117 | 233,918 | 255,526 | 241,681 | 234,924 | 305,879 | 415,107 | 393,949 | 388,177 | 413,476 | 379,201 |
| 有価証券 | - | 1,842,344 | 1,557,020 | 1,477,352 | 1,227,859 | 1,014,635 | 1,123,522 | 1,130,286 | 957,040 | 929,717 | 674,609 | 1,572,791 | 1,592,652 |
| 貸出金 | - | 4,292,464 | 4,319,830 | 4,461,281 | 4,562,923 | 4,833,452 | 4,895,963 | 4,986,839 | 5,110,404 | 5,233,605 | 5,241,817 | 6,888,803 | 7,788,914 |
| 外国為替 | - | 33,857 | 25,656 | 18,537 | 17,024 | 19,617 | 32,511 | 29,546 | 73,879 | 83,730 | 56,510 | 72,388 | 70,290 |
| 割賦売掛金 | - | - | - | - | - | - | - | - | - | - | 947,406 | 1,074,968 | 1,233,216 |
| その他資産 | - | 770,905 | 724,963 | 788,647 | 799,420 | 895,158 | 856,213 | 851,287 | 1,007,605 | 1,154,474 | 1,334,725 | 365,033 | 437,577 |
| 有形固定資産 | - | 52,716 | 50,143 | 46,285 | 48,781 | 47,980 | 50,261 | 45,341 | 69,414 | 63,878 | 60,989 | 57,931 | 58,935 |
| 建物(純額) | - | 20,580 | 19,142 | 17,174 | 16,640 | 13,891 | 11,747 | 11,805 | 12,350 | 12,454 | 11,552 | 10,925 | 10,581 |
| 建設仮勘定 | - | 226 | 545 | 465 | 382 | 258 | 215 | 266 | 741 | 87 | 49 | 200 | 123 |
| 土地 | - | 7,286 | 5,914 | 3,949 | 3,336 | 3,180 | 2,680 | 2,665 | 2,665 | 2,475 | 1,798 | 1,798 | 1,731 |
| その他(純額) | - | 5,661 | 6,731 | 7,079 | 7,300 | 8,217 | 7,619 | 6,125 | 6,508 | 5,632 | 4,405 | 4,813 | 5,098 |
| 有形リース資産 | - | 18,961 | 17,810 | 17,615 | 21,120 | 22,432 | 27,998 | 24,479 | 47,148 | 43,228 | 43,184 | 40,193 | 41,400 |
| 建設仮勘定 | - | 226 | 545 | 465 | 382 | 258 | 215 | 266 | 741 | 87 | 49 | 200 | 123 |
| その他(純額) | - | 5,661 | 6,731 | 7,079 | 7,300 | 8,217 | 7,619 | 6,125 | 6,508 | 5,632 | 4,405 | 4,813 | 5,098 |
| リース債権及びリース投資資産 | - | 203,590 | 227,764 | 227,047 | 211,453 | 191,488 | 171,429 | 176,553 | 193,445 | 192,147 | 190,859 | 211,002 | 241,277 |
| 無形固定資産 | - | 68,429 | 57,643 | 49,655 | 48,897 | 52,020 | 59,484 | 67,189 | 67,073 | 68,685 | 62,604 | 61,051 | 59,799 |
| ソフトウエア | - | 20,491 | 18,693 | 19,437 | 25,888 | 34,099 | 45,298 | 54,499 | 52,405 | 49,608 | 46,265 | 44,727 | 44,856 |
| のれん | - | 35,394 | 28,949 | 23,197 | 18,114 | 14,683 | 11,910 | 10,989 | 10,626 | 13,460 | 11,007 | 10,745 | 9,664 |
| 無形リース資産 | - | 3 | 3 | 3 | 1 | - | - | 3 | 65 | 50 | 106 | 151 | 125 |
| その他 | - | 51 | 815 | 667 | 703 | 732 | 985 | 1,007 | 1,479 | 1,374 | 1,372 | 1,354 | 1,362 |
| 無形資産 | - | 12,487 | 9,182 | 6,350 | 4,188 | 2,504 | 1,290 | 690 | 2,496 | 4,191 | 3,852 | 4,072 | 3,791 |
| その他 | - | 51 | 815 | 667 | 703 | 732 | 985 | 1,007 | 1,479 | 1,374 | 1,372 | 1,354 | 1,362 |
| その他資産 | - | 770,905 | 724,963 | 788,647 | 799,420 | 895,158 | 856,213 | 851,287 | 1,007,605 | 1,154,474 | 1,334,725 | 365,033 | 437,577 |
| 有形固定資産 | - | 52,716 | 50,143 | 46,285 | 48,781 | 47,980 | 50,261 | 45,341 | 69,414 | 63,878 | 60,989 | 57,931 | 58,935 |
| 建物(純額) | - | 20,580 | 19,142 | 17,174 | 16,640 | 13,891 | 11,747 | 11,805 | 12,350 | 12,454 | 11,552 | 10,925 | 10,581 |
| 建設仮勘定 | - | 226 | 545 | 465 | 382 | 258 | 215 | 266 | 741 | 87 | 49 | 200 | 123 |
| 土地 | - | 7,286 | 5,914 | 3,949 | 3,336 | 3,180 | 2,680 | 2,665 | 2,665 | 2,475 | 1,798 | 1,798 | 1,731 |
| その他(純額) | - | 5,661 | 6,731 | 7,079 | 7,300 | 8,217 | 7,619 | 6,125 | 6,508 | 5,632 | 4,405 | 4,813 | 5,098 |
| 有形リース資産 | - | 18,961 | 17,810 | 17,615 | 21,120 | 22,432 | 27,998 | 24,479 | 47,148 | 43,228 | 43,184 | 40,193 | 41,400 |
| 建設仮勘定 | - | 226 | 545 | 465 | 382 | 258 | 215 | 266 | 741 | 87 | 49 | 200 | 123 |
| その他(純額) | - | 5,661 | 6,731 | 7,079 | 7,300 | 8,217 | 7,619 | 6,125 | 6,508 | 5,632 | 4,405 | 4,813 | 5,098 |
| 繰延税金資産 | - | - | - | - | - | - | - | 15,096 | 16,977 | 9,985 | 10,725 | 9,575 | 12,522 |
| 無形固定資産 | - | 68,429 | 57,643 | 49,655 | 48,897 | 52,020 | 59,484 | 67,189 | 67,073 | 68,685 | 62,604 | 61,051 | 59,799 |
| ソフトウエア | - | 20,491 | 18,693 | 19,437 | 25,888 | 34,099 | 45,298 | 54,499 | 52,405 | 49,608 | 46,265 | 44,727 | 44,856 |
| のれん | - | 35,394 | 28,949 | 23,197 | 18,114 | 14,683 | 11,910 | 10,989 | 10,626 | 13,460 | 11,007 | 10,745 | 9,664 |
| 無形リース資産 | - | 3 | 3 | 3 | 1 | - | - | 3 | 65 | 50 | 106 | 151 | 125 |
| その他 | - | 51 | 815 | 667 | 703 | 732 | 985 | 1,007 | 1,479 | 1,374 | 1,372 | 1,354 | 1,362 |
| 無形資産 | - | 12,487 | 9,182 | 6,350 | 4,188 | 2,504 | 1,290 | 690 | 2,496 | 4,191 | 3,852 | 4,072 | 3,791 |
| その他 | - | 51 | 815 | 667 | 703 | 732 | 985 | 1,007 | 1,479 | 1,374 | 1,372 | 1,354 | 1,362 |
| 支払承諾見返 | - | 511,032 | 358,414 | 291,795 | 280,620 | 346,675 | 395,301 | 456,759 | 526,520 | 567,777 | 584,708 | 842,797 | 665,306 |
| 退職給付に係る資産 | - | - | 1,567 | 3,625 | 2,394 | 7,075 | 13,261 | 10,931 | 5,683 | 19,482 | 19,499 | 17,235 | 26,504 |
| 貸倒引当金 | - | -161,810 | -137,358 | -108,232 | -91,732 | -100,154 | -100,840 | -98,034 | -107,998 | -112,897 | -119,466 | -118,413 | -126,058 |
| 繰延税金資産 | - | - | - | - | - | - | - | 15,096 | 16,977 | 9,985 | 10,725 | 9,575 | 12,522 |
| 資産 | - | 9,029,335 | 9,321,103 | 8,889,853 | 8,928,789 | 9,258,324 | 9,456,660 | 9,571,172 | 10,226,571 | 10,740,174 | 10,311,448 | 13,694,831 | 16,048,988 |
| 支払承諾見返 | - | 511,032 | 358,414 | 291,795 | 280,620 | 346,675 | 395,301 | 456,759 | 526,520 | 567,777 | 584,708 | 842,797 | 665,306 |
| 貸倒引当金 | - | -161,810 | -137,358 | -108,232 | -91,732 | -100,154 | -100,840 | -98,034 | -107,998 | -112,897 | -119,466 | -118,413 | -126,058 |
| 資産 | - | 9,029,335 | 9,321,103 | 8,889,853 | 8,928,789 | 9,258,324 | 9,456,660 | 9,571,172 | 10,226,571 | 10,740,174 | 10,311,448 | 13,694,831 | 16,048,988 |
| 預金 | - | 5,252,935 | 5,733,223 | 5,367,167 | 5,499,992 | 5,489,248 | 5,628,169 | 5,351,564 | 5,849,211 | 6,056,191 | 5,771,056 | 7,853,464 | 8,992,787 |
| 譲渡性預金 | - | 204,600 | 117,223 | 85,565 | 301,001 | 373,673 | 438,927 | 570,580 | 455,950 | 515,140 | 627,010 | 2,128,833 | 2,552,195 |
| コールマネー及び売渡手形 | - | 170,094 | 180,000 | 230,000 | 40,000 | 53,600 | - | 145,000 | 165,000 | 30,000 | 3,654 | 7,648 | 63,033 |
| 債券貸借取引受入担保金 | - | 47,069 | 317,599 | 103,369 | 118,139 | 337,952 | 433,462 | 510,229 | 350,407 | 395,449 | 237,530 | 220,099 | 383,794 |
| 特定取引負債 | - | 240,099 | 218,585 | 267,976 | 294,326 | 212,241 | 184,582 | 182,363 | 183,943 | 148,393 | 134,068 | 147,807 | 169,446 |
| 借用金 | - | 719,292 | 643,431 | 805,217 | 801,742 | 789,670 | 739,578 | 684,077 | 881,991 | 1,026,679 | 978,424 | 607,092 | 1,274,744 |
| 外国為替 | - | 174 | 37 | 27 | 75 | 102 | 102 | 471 | 687 | 889 | 1,905 | 2,579 | 1,451 |
| 社債 | - | 174,286 | 177,248 | 157,505 | 95,121 | 112,600 | 85,000 | 92,335 | 166,500 | 367,534 | 380,104 | 367,071 | 317,721 |
| 短期社債 | - | 82,800 | 86,900 | 96,000 | 129,400 | 168,000 | 175,700 | 191,000 | 221,300 | 218,800 | 189,200 | 33,500 | 31,000 |
| その他負債 | - | 630,759 | 497,804 | 481,359 | 380,458 | 388,307 | 367,734 | 347,383 | 404,973 | 374,978 | 416,356 | 465,242 | 586,094 |
| 社債 | - | 174,286 | 177,248 | 157,505 | 95,121 | 112,600 | 85,000 | 92,335 | 166,500 | 367,534 | 380,104 | 367,071 | 317,721 |
| 賞与引当金 | - | 7,604 | 7,782 | 8,774 | 8,419 | 8,519 | 8,489 | 8,598 | 8,560 | 8,504 | 9,977 | 10,069 | 10,474 |
| その他負債 | - | 630,759 | 497,804 | 481,359 | 380,458 | 388,307 | 367,734 | 347,383 | 404,973 | 374,978 | 416,356 | 465,242 | 586,094 |
| 退職給付引当金 | - | 7,309 | - | - | - | - | - | - | - | - | - | - | - |
| 賞与引当金 | - | 7,604 | 7,782 | 8,774 | 8,419 | 8,519 | 8,489 | 8,598 | 8,560 | 8,504 | 9,977 | 10,069 | 10,474 |
| 役員賞与引当金 | - | 54 | 67 | 88 | 77 | 75 | 51 | 44 | 47 | 41 | 39 | 8 | 30 |
| 睡眠債券払戻損失引当金 | - | - | - | - | 2,903 | 3,737 | 4,130 | 3,764 | 3,513 | 3,355 | 2,853 | 2,300 | 2,115 |
| 退職給付に係る負債 | - | - | 10,116 | 8,749 | 8,791 | 8,256 | 8,366 | 8,232 | 8,422 | 8,084 | 8,149 | 8,355 | 7,459 |
| 支払承諾 | - | 511,032 | 358,414 | 291,795 | 280,620 | 346,675 | 395,301 | 456,759 | 526,520 | 567,777 | 584,708 | 842,797 | 665,306 |
| 役員退職慰労引当金 | - | 245 | 119 | 95 | - | - | - | - | 50 | 19 | 23 | 8 | 8 |
| 負債 | - | 8,345,690 | 8,598,512 | 8,136,091 | 8,135,665 | 8,437,537 | 8,600,625 | 8,674,529 | 9,316,086 | 9,809,431 | 9,387,131 | 12,728,325 | 15,082,263 |
| 睡眠預金払戻損失引当金 | - | - | - | - | - | - | - | - | 621 | 391 | 393 | 354 | 369 |
| 睡眠債券払戻損失引当金 | - | - | - | - | 2,903 | 3,737 | 4,130 | 3,764 | 3,513 | 3,355 | 2,853 | 2,300 | 2,115 |
| 利息返還損失引当金 | - | 34,983 | 208,201 | 170,250 | 133,695 | 101,846 | 74,687 | 63,025 | 49,308 | 39,096 | 31,635 | 30,569 | 24,228 |
| 繰延税金負債 | - | - | - | - | - | - | - | - | 119 | 393 | 472 | 522 | - |
| 支払承諾 | - | 511,032 | 358,414 | 291,795 | 280,620 | 346,675 | 395,301 | 456,759 | 526,520 | 567,777 | 584,708 | 842,797 | 665,306 |
| 負債 | - | 8,345,690 | 8,598,512 | 8,136,091 | 8,135,665 | 8,437,537 | 8,600,625 | 8,674,529 | 9,316,086 | 9,809,431 | 9,387,131 | 12,728,325 | 15,082,263 |
| 資本金 | - | 512,204 | 512,204 | 512,204 | 512,204 | 512,204 | 512,204 | 512,204 | 512,204 | 512,204 | 512,204 | 512,204 | 512,204 |
| 資本剰余金 | - | 79,461 | 79,461 | 79,461 | 79,461 | 78,506 | 78,506 | 78,506 | 78,506 | 72,961 | 72,961 | 72,961 | 72,954 |
| 利益剰余金 | - | 107,288 | 146,002 | 209,419 | 267,716 | 312,538 | 361,368 | 346,562 | 389,600 | 431,623 | 449,547 | 390,305 | 438,410 |
| 自己株式 | - | -72,558 | -72,558 | -72,558 | -72,559 | -79,539 | -89,540 | -37,729 | -61,097 | -81,464 | -98,612 | -1,639 | -61,802 |
| 株主資本 | - | 626,395 | 665,110 | 728,526 | 786,823 | 823,710 | 862,538 | 899,544 | 919,214 | 935,324 | 936,101 | 973,831 | 961,767 |
| その他有価証券評価差額金 | - | 3,825 | 6,288 | 10,830 | 11,911 | 10,299 | 5,187 | 10,041 | 4,755 | -593 | -11,667 | -20,811 | -19,490 |
| 繰延ヘッジ損益 | - | -11,605 | -8,769 | -11,501 | -14,770 | -13,925 | -14,457 | -16,391 | -15,719 | -16,799 | -13,940 | -4,330 | -6,450 |
| 評価・換算差額等 | - | -6,305 | -7,409 | 2,496 | -5,466 | -4,770 | -8,754 | -7,500 | -16,219 | -13,031 | -15,836 | -11,833 | 984 |
| 為替換算調整勘定 | - | 1,475 | 267 | 3,682 | 362 | 199 | -1,573 | -1,527 | -1,670 | -1,133 | 5,587 | 11,703 | 19,445 |
| 純資産 | 627,657 | 683,644 | 722,590 | 753,762 | 793,124 | 820,786 | 856,034 | 896,642 | 910,485 | 930,742 | 924,316 | 966,506 | 966,724 |
| 退職給付に係る調整累計額 | - | - | -5,195 | -515 | -2,970 | -1,344 | 2,089 | 378 | -3,585 | 5,495 | 4,182 | 1,605 | 7,480 |
| 評価・換算差額等 | - | -6,305 | -7,409 | 2,496 | -5,466 | -4,770 | -8,754 | -7,500 | -16,219 | -13,031 | -15,836 | -11,833 | 984 |
| 非支配株主持分 | - | - | - | 21,528 | 11,254 | 1,262 | 1,930 | 4,498 | 7,364 | 8,300 | 4,052 | 4,507 | 3,972 |
| 純資産 | 627,657 | 683,644 | 722,590 | 753,762 | 793,124 | 820,786 | 856,034 | 896,642 | 910,485 | 930,742 | 924,316 | 966,506 | 966,724 |
| 負債純資産 | - | 9,029,335 | 9,321,103 | 8,889,853 | 8,928,789 | 9,258,324 | 9,456,660 | 9,571,172 | 10,226,571 | 10,740,174 | 10,311,448 | 13,694,831 | 16,048,988 |