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v3.25.2

Long-Duration Insurance Contracts Relating to Life Insurance Operations - Schedule of Deferred Policy Acquisition Costs (Detail) - JPY (¥) ¥ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Deferred Policy Acquisition Cost [Line Items] |  |  |
Beginning balance |  | ¥ 305,734 | ¥ 287,379
Capitalization |  | 35,871 | 30,260
Amortization |  | (19,215) | (18,172)
Effect of changes in foreign exchange rate |  | (742) | 6,267
Others | [1] | (5,808) |
Ending balance |  | 315,840 | 305,734
Yen-denominated insurance (First Sector) |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |
Beginning balance |  | 82,341 | 77,957
Capitalization |  | 13,431 | 10,285
Amortization |  | (6,411) | (5,901)
Effect of changes in foreign exchange rate |  | 0 | 0
Others | [1] | 0 |
Ending balance |  | 89,361 | 82,341
Yen-denominated insurance (Third Sector) |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |
Beginning balance |  | 169,581 | 166,696
Capitalization |  | 9,180 | 12,855
Amortization |  | (10,072) | (9,970)
Effect of changes in foreign exchange rate |  | 0 | 0
Others | [1] | 0 |
Ending balance |  | 168,689 | 169,581
Foreign currency denominated insurance |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |
Beginning balance |  | 53,812 | 42,726
Capitalization |  | 6,633 | 7,120
Amortization |  | (2,689) | (2,301)
Effect of changes in foreign exchange rate |  | (605) | 6,267
Others | [1] | 0 |
Ending balance |  | 57,151 | 53,812
Single- payment whole life insurance |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |
Beginning balance |  | 0 |
Capitalization |  | 6,627 |
Amortization |  | (43) |
Effect of changes in foreign exchange rate |  | (137) |
Others | [1] | (5,808) |
Ending balance |  | ¥ 639 | ¥ 0
[1] | Others include adjustments of reinsurance.

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