XML 223 R208.htm IDEA: XBRL DOCUMENT v3.24.1.1.u2
Derivative Financial Instruments and Hedging (Notional Amounts of Derivative Instruments and Other, Fair Values of Derivative Instruments and Other before Offsetting) (Parenthetical) (Detail) - JPY (¥)
¥ in Millions
Mar. 31, 2024
Mar. 31, 2023
Derivatives, Fair Value [Line Items]    
Derivative assets Fair value ¥ 72,986 ¥ 72,398
Derivative liabilities Fair value 95,686 71,366
Futures | Variable Annuity and Variable Life Insurance Contracts    
Derivatives, Fair Value [Line Items]    
Notional amount 4,863 14,758
Derivative assets Fair value 0 52
Derivative liabilities Fair value 170 200
Foreign exchange contracts | Variable Annuity and Variable Life Insurance Contracts    
Derivatives, Fair Value [Line Items]    
Notional amount 524 5,554
Derivative assets Fair value 9 12
Derivative liabilities Fair value ¥ 94 ¥ 179