XML 131 R128.htm IDEA: XBRL DOCUMENT v3.25.3
Derivative Financial Instruments and Hedging (Effect of Derivative Instruments on Consolidated Statements of Income, Pre-tax, Cash flow hedges) (Detail) - Derivatives designated as hedging instruments - Cash flow hedges - JPY (¥)
¥ in Millions
 6 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Interest rate swap agreements    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (losses) recognized in other comprehensive income on derivative ¥ (2,575) ¥ (7,712)
Interest rate swap agreements | Life insurance premiums and related investment income    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (losses) reclassified from other comprehensive income (loss) into income 0 0
Interest rate swap agreements | Interest expense    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (losses) reclassified from other comprehensive income (loss) into income (121) (68)
Interest rate swap agreements | Other (income) and expense    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (losses) reclassified from other comprehensive income (loss) into income 0 0
Foreign exchange contracts    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (losses) recognized in other comprehensive income on derivative 298 (803)
Foreign exchange contracts | Life insurance premiums and related investment income    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (losses) reclassified from other comprehensive income (loss) into income 0 0
Foreign exchange contracts | Interest expense    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (losses) reclassified from other comprehensive income (loss) into income 945 0
Foreign exchange contracts | Other (income) and expense    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (losses) reclassified from other comprehensive income (loss) into income (4,017) 0
Foreign currency swap agreements    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (losses) recognized in other comprehensive income on derivative 5,174 (4,906)
Foreign currency swap agreements | Life insurance premiums and related investment income    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (losses) reclassified from other comprehensive income (loss) into income 0 0
Foreign currency swap agreements | Interest expense    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (losses) reclassified from other comprehensive income (loss) into income 1,124 1,584
Foreign currency swap agreements | Other (income) and expense    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (losses) reclassified from other comprehensive income (loss) into income (2,906) 4,710
Options held/written and other    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (losses) recognized in other comprehensive income on derivative (6,469) (2,193)
Options held/written and other | Life insurance premiums and related investment income    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (losses) reclassified from other comprehensive income (loss) into income 50 4
Options held/written and other | Interest expense    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (losses) reclassified from other comprehensive income (loss) into income 0 0
Options held/written and other | Other (income) and expense    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (losses) reclassified from other comprehensive income (loss) into income ¥ 0 ¥ 0