XML 125 R119.htm IDEA: XBRL DOCUMENT v3.23.3
Long-Duration Insurance Contracts Relating to Life Insurance Operations - Schedule of Reconciliation of Liability For Future Policy Benefits (Detail) - JPY (¥)
¥ in Millions
 6 Months Ended 12 Months Ended
Sep. 30, 2023
Mar. 31, 2023
Mar. 31, 2022
Liability for Future Policy Benefit, Activity [Line Items]      
The liability for future policy benefits, after reinsurance recoverable ¥ 1,304,059 ¥ 1,331,671 ¥ 1,308,456
Yen-denominated insurance (First Sector)      
Liability for Future Policy Benefit, Activity [Line Items]      
Balance at beginning of year 894,537 926,910 909,868
Beginning balance at original discount rate 865,333 872,572 843,892
Effect of changes in cash flow assumptions 0 125 21,353
Effect of actual variances from expected experience 0 2,495 2,351
Adjusted beginning balance 865,333 875,193 867,596
Issuances 30,127 76,519 82,105
Interests 5,513 11,715 12,490
Net premium earned (46,315) (101,554) (96,605)
Actual variances from cash flow assumptions (237) (385) (299)
Derecognition 3,091 3,845 7,285
Effect of changes in foreign exchange rate 0 0 0
Ending balance at original discount rate 857,512 865,333 872,572
Effect of changes in discount rates 12,008 29,204 54,338
Ending balances 869,520 894,537 926,910
Balances at beginning of year 1,571,886 1,591,268 1,526,258
Beginning balance at original discount rate 1,598,009 1,535,018 1,437,596
Effect of changes in cash flow assumptions 0 1,506 22,525
Adjusted beginning balances 1,598,009 1,536,524 1,460,121
Issuances 30,127 76,519 82,105
Interests 11,996 24,023 23,867
Insurance claims paid (24,340) (45,075) (42,897)
Actual variances from cash flow assumptions (7,436) (12,376) (12,698)
Derecognition 10,943 18,394 24,520
Effect of changes in foreign exchange rate 0 0 0
Ending balances at original discount rate 1,619,299 1,598,009 1,535,018
Effect of changes in discount rates (94,265) (26,123) 56,250
Ending balance 1,525,034 1,571,886 1,591,268
Net liability for future policy benefits 655,514 677,349 664,358
Deferred profit liabilities 39,815 35,770 26,173
Subtotal 695,329 713,119 690,531
Less: Reinsurance recoverable 132 215 210
The liability for future policy benefits, after reinsurance recoverable 695,197 712,904 690,321
Yen-denominated insurance (Third Sector)      
Liability for Future Policy Benefit, Activity [Line Items]      
Balance at beginning of year 1,389,063 1,380,953 1,377,265
Beginning balance at original discount rate 1,338,398 1,285,377 1,261,182
Effect of changes in cash flow assumptions 0 48,389 28,690
Effect of actual variances from expected experience 0 22,851 1,414
Adjusted beginning balance 1,338,398 1,356,617 1,291,286
Issuances 28,481 83,982 86,304
Interests 9,360 18,762 19,412
Net premium earned (59,561) (117,670) (114,874)
Actual variances from cash flow assumptions (439) (710) (652)
Derecognition (1,957) (2,583) 3,901
Effect of changes in foreign exchange rate 0 0 0
Ending balance at original discount rate 1,314,282 1,338,398 1,285,377
Effect of changes in discount rates 13,733 50,665 95,576
Ending balances 1,328,015 1,389,063 1,380,953
Balances at beginning of year 1,918,462 1,922,003 1,877,906
Beginning balance at original discount rate 1,887,744 1,793,991 1,708,857
Effect of changes in cash flow assumptions 0 53,098 29,515
Adjusted beginning balances 1,887,744 1,847,089 1,738,372
Issuances 28,481 83,982 86,304
Interests 14,123 27,839 27,677
Insurance claims paid (35,369) (96,364) (65,052)
Actual variances from cash flow assumptions (3,485) 20,178 (6,083)
Derecognition 1,328 5,020 12,773
Effect of changes in foreign exchange rate 0 0 0
Ending balances at original discount rate 1,892,822 1,887,744 1,793,991
Effect of changes in discount rates (53,678) 30,718 128,012
Ending balance 1,839,144 1,918,462 1,922,003
Net liability for future policy benefits 511,129 529,399 541,050
Deferred profit liabilities 66,255 61,668 54,801
Subtotal 577,384 591,067 595,851
Less: Reinsurance recoverable 0 0 0
The liability for future policy benefits, after reinsurance recoverable 577,384 591,067 595,851
Foreign currency denominated insurance      
Liability for Future Policy Benefit, Activity [Line Items]      
Balance at beginning of year 374,951 422,753 366,081
Beginning balance at original discount rate 409,847 438,079 355,835
Effect of changes in cash flow assumptions 0 (6,975) 662
Effect of actual variances from expected experience 0 (1,957) (209)
Adjusted beginning balance 409,847 429,147 356,288
Issuances 22,366 22,660 77,532
Interests 5,782 10,966 9,263
Net premium earned (33,580) (60,198) (49,290)
Actual variances from cash flow assumptions (656) (1,274) (8)
Derecognition (14,744) (33,441) 2,610
Effect of changes in foreign exchange rate 49,340 41,987 41,684
Ending balance at original discount rate 438,355 409,847 438,079
Effect of changes in discount rates (50,253) (34,896) (15,326)
Ending balances 388,102 374,951 422,753
Balances at beginning of year 387,073 437,464 366,081
Beginning balance at original discount rate 573,616 543,504 402,552
Effect of changes in cash flow assumptions 0 (6,296) 626
Adjusted beginning balances 573,616 537,208 403,178
Issuances 22,366 22,660 77,532
Interests 8,163 14,552 11,125
Insurance claims paid (7,666) (13,370) (1,631)
Actual variances from cash flow assumptions 4,416 9,002 (329)
Derecognition (21,716) (47,189) 2,533
Effect of changes in foreign exchange rate 70,615 50,753 51,096
Ending balances at original discount rate 649,794 573,616 543,504
Effect of changes in discount rates (252,809) (186,543) (106,040)
Ending balance 396,985 387,073 437,464
Net liability for future policy benefits 8,883 12,122 14,711
Deferred profit liabilities 22,595 15,578 7,573
Subtotal 31,478 27,700 22,284
Less: Reinsurance recoverable 0 0 0
The liability for future policy benefits, after reinsurance recoverable ¥ 31,478 ¥ 27,700 ¥ 22,284