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v3.23.3

Long-Duration Insurance Contracts Relating to Life Insurance Operations - Schedule of Policy Account Balance And Market Risk Benefits (Detail) - Variable Annuity And Variable Life Insurance - JPY (¥) ¥ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2023 | Mar. 31, 2023
Policyholder Account Balance [Line Items] |  |
Beginning balance | ¥ 163,734 | ¥ 198,905
Effect of changes other than through net income and other comprehensive income | (13,848) | (28,754)
Surrenders and withdrawals | (4,125) | (4,083)
Transfer in | (4,257) | (14,093)
Benefit payments | (5,435) | (10,762)
Others | (31) | 184
Changes through net income | 10,121 | (6,343)
Effect of changes in fair value of corresponding investment assets | 15,531 | (2,347)
Fee income | (1,893) | (3,938)
Effect of changes in fair value of market risk benefits | (3,517) | (58)
Changes through other comprehensive income | 170 | (74)
Effect of changes in the instrument-specific credit risk | 170 | (74)
Ending balance | 160,177 | 163,734
Policyholder account balances | 157,190 | 157,399
Market risk benefits | 2,987 | 6,335
Total | ¥ 160,177 | ¥ 163,734

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- Definition Amount, before effect of reinsurance and after accumulated increase (decrease) in instrument-specific credit risk, of contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (h)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480016/944-40-65-2 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29G -Publisher FASB -URI https://asc.fasb.org//1943274/2147480046/944-40-55-29G Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-7B Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480112/944-40-45-3 + Details
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