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Income and Expenses Relating to Life Insurance Operations (Tables) | 6 Months Ended
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Sep. 30, 2025
Insurance [Abstract] |
Life Insurance Premiums and Related Investment Income | Life insurance premiums and related investment income for the six months ended September 30, 2024 and 2025 consist of the following:
|  | Millions of yen |
|  | Six months ended September 30, 2024 |  |  | Six months ended September 30, 2025 |
Life insurance premiums |  | ¥ | 229,185 |  |  | ¥ | 241,599 |
Life insurance related investment income* |  |  | 4,623 |  |  |  | 58,109 |
|  | ¥ | 233,808 |  |  | ¥ | 299,708 |
* | Life insurance related investment income for the six months ended September 30, 2024 and 2025 include net unrealized holding of a loss of ¥997 million and a gain of ¥30,360 million on equity securities held as of September 30, 2024 and 2025, respectively.
Reinsurance Benefits and Reinsurance Premiums Included in Life Insurance Premiums | Life insurance premiums include reinsurance benefits, net of reinsurance premiums. For the six months ended September 30, 2024 and 2025, reinsurance benefits and reinsurance premiums included in life insurance premiums are as follows:
|  | Millions of yen |
|  | Six months ended September 30, 2024 |  |  | Six months ended September 30, 2025 |
Reinsurance benefits |  | ¥ | 969 |  |  | ¥ | 9,170 |
Reinsurance premiums |  |  | (2,438 | ) |  |  | (2,593 | )
Gains or Losses Relating to Variable Annuity and Variable Life Insurance Contracts | The above mentioned gains or losses relating to variable annuity and variable life insurance contracts for the six months ended September 30, 2024 and 2025 are mainly as follows:
|  | Millions of yen |
|  | Six months ended September 30, 2024 |  |  | Six months ended September 30, 2025 |
Life insurance premiums and related investment income : |  |  |  |  |  |  |  |
Net realized and unrealized gains or losses from investment assets |  | ¥ | (2,704 | ) |  | ¥ | 21,706 |
Net gains or losses from derivative contracts : |  |  | (131 | ) |  |  | (1,148 | )
Futures |  |  | (141 | ) |  |  | (1,106 | )
Foreign exchange contracts |  |  | 10 |  |  |  | (42 | )
Life insurance costs : |  |  |  |  |  |  |  |
Changes in the fair value of the policy liabilities and policy account balances |  | ¥ | (15,980 | ) |  | ¥ | 6,707 |
Insurance costs recognized for insurance and annuity payouts as a result of insured events |  |  | 11,839 |  |  |  | 10,571 |
Changes in the fair value of the reinsurance contracts |  |  | (73 | ) |  |  | 1,071 |

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