v3.26.1
Segment Information (Detail) - JPY (¥)
¥ in Millions
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Segment Reporting Information [Line Items]      
Revenues ¥ 3,330,831 ¥ 2,874,821 ¥ 2,814,361
Interest expense 193,889 169,051 188,328
Costs of operating leases 411,939 394,821 356,760
Life insurance costs 479,937 384,753 433,863
Costs of Goods and Real Estate Sold 331,988 271,833 268,627
Services Expense 634,329 604,145 560,101
Selling, general and administrative expenses 711,775 646,054 627,633
Total Segment Expenses 2,874,583 2,542,995 2,453,648
Equity in Net income (Loss) of equity method investments and others 123,872 57,182 36,774
Segment profits 456,248 331,826 360,713
Other significant non-cash items:      
Depreciation and amortization 404,791 399,527 364,242
Increase in policy liabilities and policy account balances 395,623 268,258 186,193
Bargain Purchase Gain 0 3,750 0
Operating Leases [Member]      
Segment Reporting Information [Line Items]      
Revenues 641,185 624,444 535,490
Life Insurance Premiums And Related Investment Income [Member]      
Segment Reporting Information [Line Items]      
Revenues 640,159 515,259 558,923
Sales of Goods and Real Estate [Member]      
Segment Reporting Information [Line Items]      
Revenues 442,586 373,155 373,914
Services income      
Segment Reporting Information [Line Items]      
Revenues 1,112,383 1,019,283 965,010
Asia and Australia      
Other significant non-cash items:      
Bargain Purchase Gain   3,750  
Operating Segment      
Segment Reporting Information [Line Items]      
Finance revenues 367,141 329,677 350,231
Revenues 3,326,146 2,871,405 2,804,921
Interest expense 170,167 136,966 122,909
Costs of operating leases 409,019 391,591 353,820
Life insurance costs 480,603 384,910 433,827
Costs of Goods and Real Estate Sold 330,001 270,221 265,611
Services Expense 634,308 605,625 557,505
Other (income) and expense 60,614 26,230 3,945
Selling, general and administrative expenses 680,118 614,256 598,774
Provision for credit losses, and write-downs of long-lived assets and securities 51,923 45,211 23,008
Total Segment Expenses 2,816,753 2,475,010 2,359,399
Equity in Net income (Loss) of equity method investments and others 223,204 148,273 115,999
Segment profits 732,597 544,668 561,521
Other significant non-cash items:      
Depreciation and amortization 398,983 393,892 358,825
Increase in policy liabilities and policy account balances 395,623 268,258 186,193
Bargain Purchase Gain 0 3,750 0
Impairment of goodwill and intangible assets 57,444 14,295 0
Expenditures for long-lived assets 803,190 836,320 664,569
Operating Segment | Gains on investment securities and dividends [Member]      
Segment Reporting Information [Line Items]      
Revenues 129,054 14,444 31,986
Operating Segment | Operating Leases [Member]      
Segment Reporting Information [Line Items]      
Revenues 635,142 619,417 530,607
Operating Segment | Life Insurance Premiums And Related Investment Income [Member]      
Segment Reporting Information [Line Items]      
Revenues 642,904 518,084 561,533
Operating Segment | Sales of Goods and Real Estate [Member]      
Segment Reporting Information [Line Items]      
Revenues 439,529 370,483 368,927
Operating Segment | Services income      
Segment Reporting Information [Line Items]      
Revenues 1,112,376 1,019,300 961,637
Operating Segment | Corporate Financial Services and Maintenance Leasing      
Segment Reporting Information [Line Items]      
Finance revenues 68,600 63,271 61,428
Revenues 487,842 460,699 444,959
Interest expense 12,025 7,306 5,418
Costs of operating leases 211,610 201,286 192,850
Life insurance costs 0 0 0
Costs of Goods and Real Estate Sold 3,778 3,335 3,234
Services Expense 61,398 57,372 58,896
Other (income) and expense 18,505 18,305 14,896
Selling, general and administrative expenses 88,127 89,599 88,621
Provision for credit losses, and write-downs of long-lived assets and securities 3,348 2,199 960
Total Segment Expenses 398,791 379,402 364,875
Equity in Net income (Loss) of equity method investments and others 11,689 9,032 3,160
Segment profits 100,740 90,329 83,244
Other significant non-cash items:      
Depreciation and amortization 168,128 158,166 153,208
Increase in policy liabilities and policy account balances 0 0 0
Bargain Purchase Gain 0 0 0
Impairment of goodwill and intangible assets 0 0 0
Expenditures for long-lived assets 237,759 211,006 184,794
Operating Segment | Corporate Financial Services and Maintenance Leasing | Gains on investment securities and dividends [Member]      
Segment Reporting Information [Line Items]      
Revenues 1,639 2,647 2,626
Operating Segment | Corporate Financial Services and Maintenance Leasing | Operating Leases [Member]      
Segment Reporting Information [Line Items]      
Revenues 301,626 282,433 266,871
Operating Segment | Corporate Financial Services and Maintenance Leasing | Life Insurance Premiums And Related Investment Income [Member]      
Segment Reporting Information [Line Items]      
Revenues 0 0 0
Operating Segment | Corporate Financial Services and Maintenance Leasing | Sales of Goods and Real Estate [Member]      
Segment Reporting Information [Line Items]      
Revenues 4,689 4,202 3,934
Operating Segment | Corporate Financial Services and Maintenance Leasing | Services income      
Segment Reporting Information [Line Items]      
Revenues 111,288 108,146 110,100
Operating Segment | Real Estate      
Segment Reporting Information [Line Items]      
Finance revenues 5,052 4,860 6,134
Revenues 530,901 497,780 471,692
Interest expense 5,721 2,616 3,016
Costs of operating leases 24,962 24,167 24,972
Life insurance costs 0 0 0
Costs of Goods and Real Estate Sold 108,329 89,593 90,931
Services Expense 275,837 264,952 248,195
Other (income) and expense (2,512) 1,664 722
Selling, general and administrative expenses 46,996 43,405 41,542
Provision for credit losses, and write-downs of long-lived assets and securities 878 3,098 1,285
Total Segment Expenses 460,211 429,495 410,663
Equity in Net income (Loss) of equity method investments and others 7,819 2,256 6,026
Segment profits 78,509 70,541 67,055
Other significant non-cash items:      
Depreciation and amortization 19,797 18,992 18,376
Increase in policy liabilities and policy account balances 0 0 0
Bargain Purchase Gain 0 0 0
Impairment of goodwill and intangible assets 0 0 0
Expenditures for long-lived assets 65,955 78,824 57,828
Operating Segment | Real Estate | Gains on investment securities and dividends [Member]      
Segment Reporting Information [Line Items]      
Revenues 953 1,282 857
Operating Segment | Real Estate | Operating Leases [Member]      
Segment Reporting Information [Line Items]      
Revenues 52,300 61,321 50,205
Operating Segment | Real Estate | Life Insurance Premiums And Related Investment Income [Member]      
Segment Reporting Information [Line Items]      
Revenues 0 0 0
Operating Segment | Real Estate | Sales of Goods and Real Estate [Member]      
Segment Reporting Information [Line Items]      
Revenues 126,074 107,859 111,013
Operating Segment | Real Estate | Services income      
Segment Reporting Information [Line Items]      
Revenues 346,522 322,458 303,483
Operating Segment | PE Investment And Concession      
Segment Reporting Information [Line Items]      
Finance revenues 15,243 12,140 6,679
Revenues 441,953 377,931 379,168
Interest expense 5,321 3,833 2,978
Costs of operating leases 23,331 26,389 26,244
Life insurance costs 0 0 0
Costs of Goods and Real Estate Sold 212,658 173,652 168,404
Services Expense 59,934 48,890 58,677
Other (income) and expense (3,460) 10,622 (2,330)
Selling, general and administrative expenses 92,620 88,370 89,864
Provision for credit losses, and write-downs of long-lived assets and securities 8,044 1,743 366
Total Segment Expenses 398,448 353,499 344,203
Equity in Net income (Loss) of equity method investments and others 82,106 74,440 9,002
Segment profits 125,611 98,872 43,967
Other significant non-cash items:      
Depreciation and amortization 20,049 25,053 26,644
Increase in policy liabilities and policy account balances 0 0 0
Bargain Purchase Gain 0 0 0
Impairment of goodwill and intangible assets 1,092 11,149 0
Expenditures for long-lived assets 16,874 14,594 20,345
Operating Segment | PE Investment And Concession | Gains on investment securities and dividends [Member]      
Segment Reporting Information [Line Items]      
Revenues 1,861 851 1,207
Operating Segment | PE Investment And Concession | Operating Leases [Member]      
Segment Reporting Information [Line Items]      
Revenues 36,441 42,698 41,529
Operating Segment | PE Investment And Concession | Life Insurance Premiums And Related Investment Income [Member]      
Segment Reporting Information [Line Items]      
Revenues 0 0 0
Operating Segment | PE Investment And Concession | Sales of Goods and Real Estate [Member]      
Segment Reporting Information [Line Items]      
Revenues 301,345 252,969 249,085
Operating Segment | PE Investment And Concession | Services income      
Segment Reporting Information [Line Items]      
Revenues 87,063 69,273 80,668
Operating Segment | Environment and Energy      
Segment Reporting Information [Line Items]      
Finance revenues 11,938 1,402 1,478
Revenues 209,231 186,021 165,598
Interest expense 15,499 13,170 11,093
Costs of operating leases 20 18 18
Life insurance costs 0 0 0
Costs of Goods and Real Estate Sold 2,050 1,786 2,236
Services Expense 131,543 136,118 110,106
Other (income) and expense (5,158) 446 (4,633)
Selling, general and administrative expenses 26,037 22,582 18,670
Provision for credit losses, and write-downs of long-lived assets and securities 6,772 20,573 151
Total Segment Expenses 176,763 194,693 137,641
Equity in Net income (Loss) of equity method investments and others 83,304 3,749 10,115
Segment profits 115,772 (4,923) 38,072
Other significant non-cash items:      
Depreciation and amortization 32,268 33,457 23,975
Increase in policy liabilities and policy account balances 0 0 0
Bargain Purchase Gain 0 0 0
Impairment of goodwill and intangible assets 3,614 0 0
Expenditures for long-lived assets 59,772 50,720 54,959
Operating Segment | Environment and Energy | Gains on investment securities and dividends [Member]      
Segment Reporting Information [Line Items]      
Revenues 20,553 3,128 1,784
Operating Segment | Environment and Energy | Operating Leases [Member]      
Segment Reporting Information [Line Items]      
Revenues 89 79 79
Operating Segment | Environment and Energy | Life Insurance Premiums And Related Investment Income [Member]      
Segment Reporting Information [Line Items]      
Revenues 0 0 0
Operating Segment | Environment and Energy | Sales of Goods and Real Estate [Member]      
Segment Reporting Information [Line Items]      
Revenues 3,311 3,307 3,771
Operating Segment | Environment and Energy | Services income      
Segment Reporting Information [Line Items]      
Revenues 173,340 178,105 158,486
Operating Segment | Insurance      
Segment Reporting Information [Line Items]      
Finance revenues 141 280 300
Revenues 643,045 518,363 563,869
Interest expense 545 256 14
Costs of operating leases 0 0 0
Life insurance costs 480,603 384,910 433,827
Costs of Goods and Real Estate Sold 0 0 0
Services Expense 0 0 0
Other (income) and expense (3) (110) 98
Selling, general and administrative expenses 58,979 58,904 59,309
Provision for credit losses, and write-downs of long-lived assets and securities 30 4 (2)
Total Segment Expenses 540,154 443,964 493,246
Equity in Net income (Loss) of equity method investments and others 0 0 203
Segment profits 102,891 74,399 70,826
Other significant non-cash items:      
Depreciation and amortization 20,121 24,219 17,138
Increase in policy liabilities and policy account balances 395,623 268,258 186,193
Bargain Purchase Gain 0 0 0
Impairment of goodwill and intangible assets 0 0 0
Expenditures for long-lived assets 513 116 350
Operating Segment | Insurance | Gains on investment securities and dividends [Member]      
Segment Reporting Information [Line Items]      
Revenues 0 0 0
Operating Segment | Insurance | Operating Leases [Member]      
Segment Reporting Information [Line Items]      
Revenues 0 0 0
Operating Segment | Insurance | Life Insurance Premiums And Related Investment Income [Member]      
Segment Reporting Information [Line Items]      
Revenues 642,904 518,084 561,533
Operating Segment | Insurance | Sales of Goods and Real Estate [Member]      
Segment Reporting Information [Line Items]      
Revenues 0 0 0
Operating Segment | Insurance | Services income      
Segment Reporting Information [Line Items]      
Revenues 0 (1) 2,036
Operating Segment | Banking and credit      
Segment Reporting Information [Line Items]      
Finance revenues 78,903 60,290 80,653
Revenues 76,439 63,304 88,574
Interest expense 19,809 7,184 5,302
Costs of operating leases 0 0 0
Life insurance costs 0 0 0
Costs of Goods and Real Estate Sold 0 0 0
Services Expense 7,399 7,590 6,254
Other (income) and expense (89) 40 (306)
Selling, general and administrative expenses 23,854 20,822 32,886
Provision for credit losses, and write-downs of long-lived assets and securities 188 (176) 4,064
Total Segment Expenses 51,161 35,460 48,200
Equity in Net income (Loss) of equity method investments and others 1,934 1,447 56,979
Segment profits 27,212 29,291 97,353
Other significant non-cash items:      
Depreciation and amortization (766) 571 1,821
Increase in policy liabilities and policy account balances 0 0 0
Bargain Purchase Gain 0 0 0
Impairment of goodwill and intangible assets 0 0 0
Expenditures for long-lived assets 155 20 12
Operating Segment | Banking and credit | Gains on investment securities and dividends [Member]      
Segment Reporting Information [Line Items]      
Revenues (5,348) 100 600
Operating Segment | Banking and credit | Operating Leases [Member]      
Segment Reporting Information [Line Items]      
Revenues 0 0 0
Operating Segment | Banking and credit | Life Insurance Premiums And Related Investment Income [Member]      
Segment Reporting Information [Line Items]      
Revenues 0 0 0
Operating Segment | Banking and credit | Sales of Goods and Real Estate [Member]      
Segment Reporting Information [Line Items]      
Revenues 0 0 0
Operating Segment | Banking and credit | Services income      
Segment Reporting Information [Line Items]      
Revenues 2,884 2,914 7,321
Operating Segment | Aircraft and Ships      
Segment Reporting Information [Line Items]      
Finance revenues 3,853 5,769 7,769
Revenues 130,016 119,592 65,191
Interest expense 19,386 20,159 11,596
Costs of operating leases 46,309 40,986 18,853
Life insurance costs 0 0 0
Costs of Goods and Real Estate Sold 1,120 864 96
Services Expense 8,268 6,724 1,783
Other (income) and expense (1,527) 68 (3,600)
Selling, general and administrative expenses 15,328 11,967 10,345
Provision for credit losses, and write-downs of long-lived assets and securities 4 3 3
Total Segment Expenses 88,888 80,771 39,076
Equity in Net income (Loss) of equity method investments and others 25,480 28,599 18,251
Segment profits 66,608 67,420 44,366
Other significant non-cash items:      
Depreciation and amortization 32,231 30,808 20,366
Increase in policy liabilities and policy account balances 0 0 0
Bargain Purchase Gain 0 0 0
Impairment of goodwill and intangible assets 0 0 0
Expenditures for long-lived assets 230,164 300,251 174,525
Operating Segment | Aircraft and Ships | Gains on investment securities and dividends [Member]      
Segment Reporting Information [Line Items]      
Revenues 272 (24) (130)
Operating Segment | Aircraft and Ships | Operating Leases [Member]      
Segment Reporting Information [Line Items]      
Revenues 102,827 96,856 48,074
Operating Segment | Aircraft and Ships | Life Insurance Premiums And Related Investment Income [Member]      
Segment Reporting Information [Line Items]      
Revenues 0 0 0
Operating Segment | Aircraft and Ships | Sales of Goods and Real Estate [Member]      
Segment Reporting Information [Line Items]      
Revenues 1,093 852 97
Operating Segment | Aircraft and Ships | Services income      
Segment Reporting Information [Line Items]      
Revenues 21,971 16,139 9,381
Operating Segment | ORIX USA      
Segment Reporting Information [Line Items]      
Finance revenues 106,559 102,627 112,545
Revenues 272,219 154,228 173,426
Interest expense 52,997 40,016 47,466
Costs of operating leases 2,851 1,496 547
Life insurance costs 0 0 0
Costs of Goods and Real Estate Sold 1,659 307 310
Services Expense 1,947 2,823 4,331
Other (income) and expense 51,322 (3,382) (2,078)
Selling, general and administrative expenses 123,875 95,406 85,483
Provision for credit losses, and write-downs of long-lived assets and securities 25,342 7,669 7,937
Total Segment Expenses 259,993 144,335 143,996
Equity in Net income (Loss) of equity method investments and others (11,272) 30,022 (1,499)
Segment profits 954 39,915 27,931
Other significant non-cash items:      
Depreciation and amortization 2,779 2,687 2,872
Increase in policy liabilities and policy account balances 0 0 0
Bargain Purchase Gain 0 0 0
Impairment of goodwill and intangible assets 52,738 1,175 0
Expenditures for long-lived assets 4,328 2,326 184
Operating Segment | ORIX USA | Gains on investment securities and dividends [Member]      
Segment Reporting Information [Line Items]      
Revenues 89,425 119 6,446
Operating Segment | ORIX USA | Operating Leases [Member]      
Segment Reporting Information [Line Items]      
Revenues 2,670 861 1,225
Operating Segment | ORIX USA | Life Insurance Premiums And Related Investment Income [Member]      
Segment Reporting Information [Line Items]      
Revenues 0 0 0
Operating Segment | ORIX USA | Sales of Goods and Real Estate [Member]      
Segment Reporting Information [Line Items]      
Revenues 2,535 543 602
Operating Segment | ORIX USA | Services income      
Segment Reporting Information [Line Items]      
Revenues 71,030 50,078 52,608
Operating Segment | ORIX Europe      
Segment Reporting Information [Line Items]      
Finance revenues 3,360 4,077 2,409
Revenues 291,086 257,267 227,151
Interest expense 687 665 289
Costs of operating leases 0 0 0
Life insurance costs 0 0 0
Costs of Goods and Real Estate Sold 0 0 0
Services Expense 72,084 66,446 54,224
Other (income) and expense 4,586 4,231 2,666
Selling, general and administrative expenses 157,595 138,859 130,496
Provision for credit losses, and write-downs of long-lived assets and securities 148 115 217
Total Segment Expenses 235,100 210,316 187,892
Equity in Net income (Loss) of equity method investments and others 7,065 (2,578) 2,379
Segment profits 63,051 44,373 41,638
Other significant non-cash items:      
Depreciation and amortization 7,039 6,234 7,003
Increase in policy liabilities and policy account balances 0 0 0
Bargain Purchase Gain 0 0 0
Impairment of goodwill and intangible assets 0 1,971 0
Expenditures for long-lived assets 655 1,143 388
Operating Segment | ORIX Europe | Gains on investment securities and dividends [Member]      
Segment Reporting Information [Line Items]      
Revenues 13,869 4,408 10,711
Operating Segment | ORIX Europe | Operating Leases [Member]      
Segment Reporting Information [Line Items]      
Revenues 0 0 0
Operating Segment | ORIX Europe | Life Insurance Premiums And Related Investment Income [Member]      
Segment Reporting Information [Line Items]      
Revenues 0 0 0
Operating Segment | ORIX Europe | Sales of Goods and Real Estate [Member]      
Segment Reporting Information [Line Items]      
Revenues 0 0 0
Operating Segment | ORIX Europe | Services income      
Segment Reporting Information [Line Items]      
Revenues 273,857 248,782 214,031
Operating Segment | Asia and Australia      
Segment Reporting Information [Line Items]      
Finance revenues 73,492 74,961 70,836
Revenues 243,414 236,220 225,293
Interest expense 38,177 41,761 35,737
Costs of operating leases 99,936 97,249 90,336
Life insurance costs 0 0 0
Costs of Goods and Real Estate Sold 407 684 400
Services Expense 15,898 14,710 15,039
Other (income) and expense (1,050) (5,654) (1,490)
Selling, general and administrative expenses 46,707 44,342 41,558
Provision for credit losses, and write-downs of long-lived assets and securities 7,169 9,983 8,027
Total Segment Expenses 207,244 203,075 189,607
Equity in Net income (Loss) of equity method investments and others 15,079 1,306 11,383
Segment profits 51,249 34,451 47,069
Other significant non-cash items:      
Depreciation and amortization 97,337 93,705 87,422
Increase in policy liabilities and policy account balances 0 0 0
Bargain Purchase Gain 0 3,750 0
Impairment of goodwill and intangible assets 0 0 0
Expenditures for long-lived assets 187,015 177,320 171,184
Operating Segment | Asia and Australia | Gains on investment securities and dividends [Member]      
Segment Reporting Information [Line Items]      
Revenues 5,830 1,933 7,885
Operating Segment | Asia and Australia | Operating Leases [Member]      
Segment Reporting Information [Line Items]      
Revenues 139,189 135,169 122,624
Operating Segment | Asia and Australia | Life Insurance Premiums And Related Investment Income [Member]      
Segment Reporting Information [Line Items]      
Revenues 0 0 0
Operating Segment | Asia and Australia | Sales of Goods and Real Estate [Member]      
Segment Reporting Information [Line Items]      
Revenues 482 751 425
Operating Segment | Asia and Australia | Services income      
Segment Reporting Information [Line Items]      
Revenues ¥ 24,421 ¥ 23,406 ¥ 23,523