v3.25.2
Provisions (Details) - JPY (¥)
¥ in Millions
12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Apr. 01, 2023
Reconciliation of changes in other provisions [abstract]      
Current portion ¥ 0 ¥ 120 [1] ¥ 0 [1]
Non-current portion 340 0 [1] 225 [1]
Asset retirement obligations      
Reconciliation of changes in other provisions [abstract]      
Beginning balance 120 225  
Provisions made during the year 339 35  
Provisions used during the year (120) (38)  
Provisions reversed during the year 0 (102)  
Unwind of discount 1 0  
Ending balance 340 120  
Current portion 0 120  
Non-current portion 340 0  
Total ¥ 340 ¥ 120 ¥ 225
[1] The comparative information is restated due to change in accounting policy. See Note 2 (5) “Changes in