XML 150 R147.htm IDEA: XBRL DOCUMENT
v3.25.3

Segment Information (Segment Assets) (Detail) - JPY (¥) ¥ in Millions | Sep. 30, 2025 | Mar. 31, 2025
--- | --- | ---
Segment Reporting Information [Line Items] |  |  |  |  |
Installment loans |  | ¥ 4,208,241 |  | ¥ 4,081,019 |
Investment in operating leases |  | 2,086,405 |  | 1,967,178 |
Investment in securities |  | 3,393,331 |  | 3,234,547 |
Property under facility operations and servicing assets |  | 767,159 |  | 771,851 |
Inventories |  | 240,377 |  | 229,229 |
Equity method investments |  | 1,240,679 |  | 1,320,015 |
Other assets |  | 2,524,635 |  | 2,226,849 |
Segment Assets |  | 17,604,283 |  | 16,866,251 |
Operating Segment |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net investment in leases |  | 1,200,551 |  | 1,167,339 |
Installment loans |  | 4,208,241 |  | 4,081,013 |
Investment in operating leases |  | 2,077,912 |  | 1,958,039 |
Investment in securities |  | 3,392,746 |  | 3,234,127 |
Property under facility operations and servicing assets |  | 833,342 |  | 838,424 |
Inventories |  | 240,152 |  | 228,997 |
Advances for finance lease and operating lease |  | 110,183 |  | 116,873 |
Equity method investments |  | 1,240,439 |  | 1,319,707 |
Advances for property under facility operations |  | 85,588 |  | 78,404 |
Goodwill, intangible assets acquired in business combinations |  | 1,293,656 | [1] | 1,108,962 | [2]
Other assets | [3] | 2,393,408 |  | 2,324,742 |
Segment Assets |  | 17,076,218 |  | 16,456,627 |
Operating Segment | Corporate Financial Services and Maintenance Leasing |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net investment in leases |  | 569,392 |  | 569,380 |
Installment loans |  | 397,929 |  | 424,370 |
Investment in operating leases |  | 583,204 |  | 557,625 |
Investment in securities |  | 32,341 |  | 29,690 |
Property under facility operations and servicing assets |  | 43,219 |  | 43,857 |
Inventories |  | 643 |  | 433 |
Advances for finance lease and operating lease |  | 5,242 |  | 6,177 |
Equity method investments |  | 8,338 |  | 16,375 |
Advances for property under facility operations |  | 19 |  | 143 |
Goodwill, intangible assets acquired in business combinations |  | 24,774 | [1] | 25,268 | [2]
Other assets | [3] | 190,215 |  | 211,247 |
Segment Assets |  | 1,855,316 |  | 1,884,565 |
Operating Segment | Real Estate |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net investment in leases |  | 42,489 |  | 45,810 |
Installment loans |  | 21 |  | 30 |
Investment in operating leases |  | 329,729 |  | 311,377 |
Investment in securities |  | 10,042 |  | 6,209 |
Property under facility operations and servicing assets |  | 158,463 |  | 175,153 |
Inventories |  | 192,716 |  | 182,652 |
Advances for finance lease and operating lease |  | 66,865 |  | 78,044 |
Equity method investments |  | 206,442 |  | 177,956 |
Advances for property under facility operations |  | 7,578 |  | 7,401 |
Goodwill, intangible assets acquired in business combinations |  | 49,752 | [1] | 50,801 | [2]
Other assets | [3] | 96,249 |  | 122,860 |
Segment Assets |  | 1,160,346 |  | 1,158,293 |
Operating Segment | PE Investment And Concession |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net investment in leases |  | 1,375 |  | 1,640 |
Installment loans |  | 129,094 |  | 124,411 |
Investment in operating leases |  | 46,504 |  | 46,796 |
Investment in securities |  | 6,371 |  | 6,117 |
Property under facility operations and servicing assets |  | 66,860 |  | 53,832 |
Inventories |  | 41,897 |  | 41,021 |
Advances for finance lease and operating lease |  | 39 |  | 3 |
Equity method investments |  | 190,703 |  | 148,274 |
Advances for property under facility operations |  | 3,383 |  | 728 |
Goodwill, intangible assets acquired in business combinations |  | 337,643 | [1] | 331,003 | [2]
Other assets | [3] | 230,925 |  | 269,119 |
Segment Assets |  | 1,054,794 |  | 1,022,944 |
Operating Segment | Environment and Energy |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net investment in leases |  | 1,838 |  | 2,092 |
Installment loans |  | 4,884 |  | 3,609 |
Investment in operating leases |  | 229 |  | 237 |
Investment in securities |  | 148,462 |  | 32,032 |
Property under facility operations and servicing assets |  | 487,081 |  | 487,241 |
Inventories |  | 2,330 |  | 2,551 |
Advances for finance lease and operating lease |  | 0 |  | 0 |
Equity method investments |  | 10,365 |  | 170,946 |
Advances for property under facility operations |  | 74,608 |  | 70,081 |
Goodwill, intangible assets acquired in business combinations |  | 112,496 | [1] | 120,743 | [2]
Other assets | [3] | 135,079 |  | 126,643 |
Segment Assets |  | 977,372 |  | 1,016,175 |
Operating Segment | Insurance |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net investment in leases |  | 0 |  | 0 |
Installment loans |  | 13,849 |  | 12,805 |
Investment in operating leases |  | 26,050 |  | 26,167 |
Investment in securities |  | 2,296,469 |  | 2,234,453 |
Property under facility operations and servicing assets |  | 0 |  | 0 |
Inventories |  | 0 |  | 0 |
Advances for finance lease and operating lease |  | 0 |  | 0 |
Equity method investments |  | 40,348 |  | 35,865 |
Advances for property under facility operations |  | 0 |  | 0 |
Goodwill, intangible assets acquired in business combinations |  | 4,452 | [1] | 4,452 | [2]
Other assets | [3] | 759,477 |  | 695,492 |
Segment Assets |  | 3,140,645 |  | 3,009,234 |
Operating Segment | Banking and credit |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net investment in leases |  | 0 |  | 0 |
Installment loans |  | 2,631,885 |  | 2,511,736 |
Investment in operating leases |  | 0 |  | 0 |
Investment in securities |  | 255,716 |  | 305,441 |
Property under facility operations and servicing assets |  | 0 |  | 0 |
Inventories |  | 0 |  | 0 |
Advances for finance lease and operating lease |  | 0 |  | 0 |
Equity method investments |  | 43,840 |  | 43,934 |
Advances for property under facility operations |  | 0 |  | 0 |
Goodwill, intangible assets acquired in business combinations |  | 0 | [1] | 0 | [2]
Other assets | [3] | 322,176 |  | 283,460 |
Segment Assets |  | 3,253,617 |  | 3,144,571 |
Operating Segment | Aircraft and Ships |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net investment in leases |  | 11,768 |  | 0 |
Installment loans |  | 25,993 |  | 36,119 |
Investment in operating leases |  | 626,577 |  | 599,813 |
Investment in securities |  | 4,506 |  | 9,387 |
Property under facility operations and servicing assets |  | 26 |  | 28 |
Inventories |  | 1,842 |  | 1,588 |
Advances for finance lease and operating lease |  | 34,820 |  | 27,816 |
Equity method investments |  | 402,807 |  | 402,567 |
Advances for property under facility operations |  | 0 |  | 0 |
Goodwill, intangible assets acquired in business combinations |  | 50,960 | [1] | 43,024 | [2]
Other assets | [3] | 96,755 |  | 111,631 |
Segment Assets |  | 1,256,054 |  | 1,231,973 |
Operating Segment | ORIX USA |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net investment in leases |  | 428 |  | 451 |
Installment loans |  | 721,213 |  | 652,805 |
Investment in operating leases |  | 27,312 |  | 21,260 |
Investment in securities |  | 508,690 |  | 487,022 |
Property under facility operations and servicing assets |  | 75,660 |  | 76,469 |
Inventories |  | 518 |  | 137 |
Advances for finance lease and operating lease |  | 0 |  | 0 |
Equity method investments |  | 79,389 |  | 54,817 |
Advances for property under facility operations |  | 0 |  | 0 |
Goodwill, intangible assets acquired in business combinations |  | 329,036 | [1] | 171,884 | [2]
Other assets | [3] | 174,922 |  | 129,094 |
Segment Assets |  | 1,917,168 |  | 1,593,939 |
Operating Segment | ORIX Europe |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net investment in leases |  | 0 |  | 0 |
Installment loans |  | 0 |  | 0 |
Investment in operating leases |  | 0 |  | 0 |
Investment in securities |  | 95,095 |  | 86,008 |
Property under facility operations and servicing assets |  | 0 |  | 0 |
Inventories |  | 0 |  | 0 |
Advances for finance lease and operating lease |  | 0 |  | 0 |
Equity method investments |  | 8,517 |  | 8,578 |
Advances for property under facility operations |  | 0 |  | 0 |
Goodwill, intangible assets acquired in business combinations |  | 377,703 | [1] | 354,801 | [2]
Other assets | [3] | 238,474 |  | 219,919 |
Segment Assets |  | 719,789 |  | 669,306 |
Operating Segment | Asia and Australia |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net investment in leases |  | 573,261 |  | 547,966 |
Installment loans |  | 283,373 |  | 315,128 |
Investment in operating leases |  | 438,307 |  | 394,764 |
Investment in securities |  | 35,054 |  | 37,768 |
Property under facility operations and servicing assets |  | 2,033 |  | 1,844 |
Inventories |  | 206 |  | 615 |
Advances for finance lease and operating lease |  | 3,217 |  | 4,833 |
Equity method investments |  | 249,690 |  | 260,395 |
Advances for property under facility operations |  | 0 |  | 51 |
Goodwill, intangible assets acquired in business combinations |  | 6,840 | [1] | 6,986 | [2]
Other assets | [3] | 149,136 |  | 155,277 |
Segment Assets |  | ¥ 1,741,117 |  | ¥ 1,725,627 |
[1] | In ORIX USA segment, there are no goodwill or intangible assets acquired in business combinations related to noncontrolling interests. Goodwill and intangible assets acquired in business combinations related to redeemable noncontrolling interests amount to ¥45,355 million. In ORIX Europe segment, goodwill and intangible assets acquired in business combinations related to noncontrolling interests amount to ¥6,841 million, and there are no goodwill or intangible assets related to redeemable noncontrolling interests.
[2] | In ORIX USA segment, there are no goodwill or intangible assets acquired in business combinations related to noncontrolling interests or redeemable noncontrolling interests. In ORIX Europe segment, goodwill and intangible assets acquired in business combinations related to noncontrolling interests amount to ¥6,660 million, and there are no goodwill or intangible assets related to redeemable noncontrolling interests.
[3] | Other assets include cash and cash equivalents, restricted cash, allowance for credit losses, trade notes, accounts and other receivables, office facilities, loans to ORIX and its subsidiaries, and reinsurance recoverables.

X
- Definition Advances for finance lease and operating lease. + References No definition available. + Details
Name: | ck0001070304_AdvancesForFinanceLeaseAndOperatingLease
Namespace Prefix: | ck0001070304_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Advances for property under facility operations. + References No definition available. + Details
Name: | ck0001070304_AdvancesForPropertyUnderFacilityOperations
Namespace Prefix: | ck0001070304_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reflects the sum of the gross carrying amounts of the various categories of loans made to individuals or corporate borrowers. + References No definition available. + Details
Name: | ck0001070304_InstallmentLoans
Namespace Prefix: | ck0001070304_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Investment In Operating Leases. + References No definition available. + Details
Name: | ck0001070304_InvestmentInOperatingLeases
Namespace Prefix: | ck0001070304_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Investment in securities. + References No definition available. + Details
Name: | ck0001070304_InvestmentInSecurities
Namespace Prefix: | ck0001070304_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Net investment in leases. + References No definition available. + Details
Name: | ck0001070304_NetInvestmentInLeases
Namespace Prefix: | ck0001070304_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Property under Facility Operations + References No definition available. + Details
Name: | ck0001070304_PropertyUnderFacilityOperations
Namespace Prefix: | ck0001070304_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of asset recognized for present right to economic benefit. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 235 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-05(b)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477314/942-235-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 235 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478671/942-235-S50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(i)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 28 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-28 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 64 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481620/480-10-55-64 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 605 -Name Accounting Standards Codification -Section 55 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477548/944-605-55-14 Reference 8: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 605 -Name Accounting Standards Codification -Section 55 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477548/944-605-55-11 Reference 9: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 48 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-48 Reference 10: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 49 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-49 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 270 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482964/270-10-50-1 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (ee) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-32 Reference 13: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-32 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 15: http://www.xbrl.org/2003/role/disclosureRef -Topic 810 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (bb) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481203/810-10-50-3 Reference 16: http://www.xbrl.org/2003/role/disclosureRef -Topic 810 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 25 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481231/810-10-45-25 Reference 17: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1 Reference 18: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 Reference 19: http://www.xbrl.org/2003/role/exampleRef -Topic 852 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481372/852-10-55-10 Reference 20: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479168/946-830-55-12 Reference 21: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(12)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 22: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(8)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1 Reference 23: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(18)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 24: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(i)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 25: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(ii)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 26: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iii)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 27: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iii)(A)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 28: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iv)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 29: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(5)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 30: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(i)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 31: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(A)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 32: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(B)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 33: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iv)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 34: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(5)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 35: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 852 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481404/852-10-50-7 Reference 36: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 30 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 Reference 37: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(11)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 + Details
Name: | us-gaap_Assets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of asset acquired in business combination and recognized at acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479907/805-20-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479907/805-20-50-1 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 270 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482964/270-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (ee) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-32 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481664/323-10-45-1 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(10)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 25 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-25 + Details
Name: | us-gaap_EquityMethodInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 852 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481372/852-10-55-10 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483467/210-10-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_InventoryNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of assets classified as other. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 605 -Name Accounting Standards Codification -Section 55 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477548/944-605-55-14 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 605 -Name Accounting Standards Codification -Section 55 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477548/944-605-55-11 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 49 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-49 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479168/946-830-55-12 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(10)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_OtherAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001070304_CorporateFinancialServicesAndMaintenanceLeasingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001070304_SegmentsRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001070304_PeInvestmentAndConcessionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001070304_EnvironmentAndEnergyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001070304_InsuranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001070304_BankingAndCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001070304_AircraftAndShipsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001070304_ORIXUsaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001070304_OrixEuropeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ck0001070304_AsiaAndAustraliaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |