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v3.25.2

Long-Duration Insurance Contracts Relating to Life Insurance Operations - Schedule of Reconciliation of Liability For Future Policy Benefits (Detail) - JPY (¥) ¥ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Liability for Future Policy Benefit, Activity [Line Items] |  |
The liability for future policy benefits, after reinsurance recoverable | ¥ 1,424,312 | ¥ 1,430,462
Yen-denominated insurance (First Sector) |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |
Balance at beginning of year | 873,038 | 894,537
Beginning balance at original discount rate | 858,959 | 865,333
Effect of changes in cash flow assumptions | (9,660) | (6,213)
Effect of actual variances from expected experience | 984 | 1,418
Adjusted beginning balance | 850,283 | 860,538
Issuances | 130,605 | 94,169
Interests | 10,568 | 10,840
Net premium earned | (116,850) | (106,300)
Actual variances from cash flow assumptions | (437) | (550)
Derecognition | 3,131 | 262
Effect of changes in foreign exchange rate | 0 | 0
Ending balance at original discount rate | 877,300 | 858,959
Effect of changes in discount rates | (21,869) | 14,079
Ending balance | 855,431 | 873,038
Balances at beginning of year | 1,565,877 | 1,571,886
Beginning balance at original discount rate | 1,658,143 | 1,598,009
Effect of changes in cash flow assumptions | (10,284) | (7,962)
Adjusted beginning balances | 1,647,859 | 1,590,047
Issuances | 130,605 | 94,169
Interests | 24,463 | 23,981
Insurance claims paid | (57,099) | (52,161)
Actual variances from cash flow assumptions | (9,571) | (11,644)
Derecognition | 14,655 | 13,751
Effect of changes in foreign exchange rate | 0 | 0
Ending balance at original discount rate | 1,750,912 | 1,658,143
Effect of changes in discount rates | (239,476) | (92,266)
Ending balance | 1,511,436 | 1,565,877
Net liability for future policy benefits | 656,005 | 692,839
Deferred profit liabilities | 61,448 | 47,068
Subtotal | 717,453 | 739,907
Less: Reinsurance recoverable | 196 | 211
The liability for future policy benefits, after reinsurance recoverable | 717,257 | 739,696
Yen-denominated insurance (Third Sector) |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |
Balance at beginning of year | 1,306,719 | 1,389,063
Beginning balance at original discount rate | 1,289,145 | 1,338,398
Effect of changes in cash flow assumptions | (7,648) | 3,634
Effect of actual variances from expected experience | 812 | 2,865
Adjusted beginning balance | 1,282,309 | 1,344,897
Issuances | 34,189 | 52,510
Interests | 17,489 | 18,439
Net premium earned | (116,049) | (119,416)
Actual variances from cash flow assumptions | (770) | (862)
Derecognition | (463) | (6,423)
Effect of changes in foreign exchange rate | 0 | 0
Ending balance at original discount rate | 1,216,705 | 1,289,145
Effect of changes in discount rates | (54,491) | 17,574
Ending balance | 1,162,214 | 1,306,719
Balances at beginning of year | 1,844,599 | 1,918,462
Beginning balance at original discount rate | 1,895,730 | 1,887,744
Effect of changes in cash flow assumptions | (8,470) | 4,600
Adjusted beginning balances | 1,887,260 | 1,892,344
Issuances | 34,189 | 52,510
Interests | 27,997 | 28,159
Insurance claims paid | (72,044) | (70,513)
Actual variances from cash flow assumptions | (8,287) | (7,465)
Derecognition | 8,960 | 695
Effect of changes in foreign exchange rate | 0 | 0
Ending balance at original discount rate | 1,878,075 | 1,895,730
Effect of changes in discount rates | (218,115) | (51,131)
Ending balance | 1,659,960 | 1,844,599
Net liability for future policy benefits | 497,746 | 537,880
Deferred profit liabilities | 74,962 | 68,539
Subtotal | 572,708 | 606,419
Less: Reinsurance recoverable | 0 | 0
The liability for future policy benefits, after reinsurance recoverable | 572,708 | 606,419
Foreign currency denominated insurance |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |
Balance at beginning of year | 389,664 | 374,951
Beginning balance at original discount rate | 424,186 | 409,847
Effect of changes in cash flow assumptions | 66 | 2,106
Effect of actual variances from expected experience | (3,193) | (2,531)
Adjusted beginning balance | 421,059 | 409,422
Issuances | 31,717 | 43,378
Interests | 12,323 | 12,405
Net premium earned | (62,788) | (61,594)
Actual variances from cash flow assumptions | (1,231) | (1,222)
Derecognition | (27,567) | (32,681)
Effect of changes in foreign exchange rate | (4,667) | 54,478
Ending balance at original discount rate | 368,846 | 424,186
Effect of changes in discount rates | (22,914) | (34,522)
Ending balance | 345,932 | 389,664
Balances at beginning of year | 447,081 | 387,073
Beginning balance at original discount rate | 659,217 | 573,616
Effect of changes in cash flow assumptions | 81 | 1,782
Adjusted beginning balances | 659,298 | 575,398
Issuances | 31,717 | 43,378
Interests | 19,385 | 17,649
Insurance claims paid | (18,634) | (17,757)
Actual variances from cash flow assumptions | 13,086 | 11,794
Derecognition | (46,693) | (49,973)
Effect of changes in foreign exchange rate | (8,154) | 78,728
Ending balance at original discount rate | 650,005 | 659,217
Effect of changes in discount rates | (207,066) | (212,136)
Ending balance | 442,939 | 447,081
Net liability for future policy benefits | 97,007 | 57,417
Deferred profit liabilities | 37,340 | 26,930
Subtotal | 134,347 | 84,347
Less: Reinsurance recoverable | 0 | 0
The liability for future policy benefits, after reinsurance recoverable | ¥ 134,347 | ¥ 84,347

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