XML 107 R101.htm IDEA: XBRL DOCUMENT v3.23.3

Transfer of Financial Assets - Fair Value of Servicing Assets (Detail) - JPY (¥) ¥ in Millions	Sep. 30, 2023	Mar. 31, 2023
Transfers and Servicing [Abstract]
Beginning balance	¥ 101,375	¥ 83,732
Ending balance	¥ 114,501	¥ 101,375

X

- Definition

Servicing Asset At Amortized Cost Fair Value

+ References

No definition available.

+ Details

Name:	ck0001070304_ServicingAssetAtAmortizedCostFairValue
Namespace Prefix:	ck0001070304_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

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