XML 129 R123.htm IDEA: XBRL DOCUMENT v3.23.3

Long-Duration Insurance Contracts Relating to Life Insurance Operations - Schedule of Liability For Future Policy Benefit, Weighted Average Discount Rates (Detail)	Sep. 30, 2023	Mar. 31, 2023
Yen-denominated insurance (First Sector)
Liability for Future Policy Benefit, Activity [Line Items]
Weighted average of the original discount rates	1.60%	1.60%
Weighted average of the current discount rates	2.10%	1.90%
Yen-denominated insurance (Third Sector)
Liability for Future Policy Benefit, Activity [Line Items]
Weighted average of the original discount rates	1.70%	1.70%
Weighted average of the current discount rates	2.00%	1.80%
Foreign currency denominated insurance
Liability for Future Policy Benefit, Activity [Line Items]
Weighted average of the original discount rates	3.00%	2.90%
Weighted average of the current discount rates	6.00%	5.20%

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

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 55
-Paragraph 29E
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480046/944-40-55-29E

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480081/944-40-50-6

+ Details

Name:	us-gaap_LiabilityForFuturePolicyBenefitActivityLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Current weighted-average discount rate used to measure liability for future policy benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 55
-Paragraph 29E
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480046/944-40-55-29E

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (b)(6)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480081/944-40-50-6

+ Details

Name:	us-gaap_LiabilityForFuturePolicyBenefitCurrentWeightedAverageDiscountRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Original weighted-average discount rate at contract issue date used to measure liability for future policy benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 55
-Paragraph 29E
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480046/944-40-55-29E

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (b)(6)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480081/944-40-50-6

+ Details

Name:	us-gaap_LiabilityForFuturePolicyBenefitWeightedAverageInterestAccretionRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	srt_ProductOrServiceAxis=ck0001070304_FirstSectorYendenominatedInsuranceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=ck0001070304_ThirdSectorYendenominatedInsuranceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=ck0001070304_ForeigncurrencyDenominatedInsuranceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: