v3.26.1
Financial Instruments - Schedule of Derivatives Reclassifications (Details) - JPY (¥)
¥ in Millions
12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Amounts recognized in OCI      
Hedging cost ¥ 3,159 ¥ 7,963 ¥ 7,197
Interest rate swaps      
Amounts recognized in OCI      
Gains (losses) on cash flow hedges 528 2,037  
Forward interest rate contracts      
Amounts recognized in OCI      
Gains (losses) on cash flow hedges 1,435 2,301  
Cross currency interest rate swaps      
Amounts recognized in OCI      
Gains (losses) on cash flow hedges 109,946 (711)  
Hedging cost 6,155 18,663  
Foreign currency denominated bonds and loans      
Amounts recognized in OCI      
Gains (losses) on net investment hedges   (19,662)  
Foreign currency denominated bonds      
Amounts recognized in OCI      
Gains (losses) on net investment hedges 157,640    
Forward exchange contracts      
Amounts recognized in OCI      
Gains (losses) on net investment hedges 57,733 13,466  
Cash flow hedge      
Amount reclassified to profit or loss      
Reclassification adjustments on cash flow hedges (72,246) (2,355)  
Cash flow hedge | Interest rate swaps      
Amount reclassified to profit or loss      
Reclassification adjustments on cash flow hedges (229) (6,415)  
Cash flow hedge | Forward interest rate contracts      
Amount reclassified to profit or loss      
Reclassification adjustments on cash flow hedges 2,043 2,317  
Hedging costs      
Amount reclassified to profit or loss      
Reclassification adjustments on cash flow hedges ¥ (1,542) ¥ (7,350)