v3.26.1
Operating Expenses - Schedule of Operating expenses (Details) - JPY (¥)
¥ in Millions
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Disclosure of detailed information about operating expenses [line items]      
Point expenses ¥ 60,195 ¥ 50,362 ¥ 45,402
Settlement related cost 48,731 43,662 39,992
Employee benefit expenses 47,641 41,483 37,764
Professional and outsourcing services expenses 28,099 28,767 34,800
Provision for loss allowance 24,923 23,942 23,006
Depreciation and amortization 23,758 20,093 17,549
License fees 18,899 18,027 15,899
Interest expenses 10,590 4,254 1,931
Advertising and promotion expenses 10,006 10,731 11,458
Tax and charges 5,943 5,052 6,518
Amortization of contract cost 1,724 1,297 1,043
Other 20,071 15,898 19,238
Subtotal 90,991 75,352 73,636
Total 300,580 263,568 254,600
Inter-segment Eliminations      
Disclosure of detailed information about operating expenses [line items]      
Settlement related cost (799) (575) (500)
Employee benefit expenses (14)    
Professional and outsourcing services expenses (357) (117) (172)
Interest expenses (327) (652) (1,427)
Advertising and promotion expenses (303) (693) (547)
Other (1,121) (779) (258)
Subtotal (1,751) (2,124) (2,232)
Total (2,921) (2,816) (2,904)
Payment      
Disclosure of detailed information about operating expenses [line items]      
Point expenses 60,195 50,362 45,402
Settlement related cost 37,817 33,645 30,660
Employee benefit expenses 36,790 32,984 30,981
Professional and outsourcing services expenses 20,336 19,887 26,456
Provision for loss allowance 23,861 23,368 22,650
Depreciation and amortization 17,018 14,705 12,849
License fees 18,060 18,027 15,899
Interest expenses 3,920 2,628 2,814
Advertising and promotion expenses 7,281 6,896 7,955
Tax and charges 3,889 3,038 4,270
Amortization of contract cost 1,724 1,297 1,043
Other 15,831 11,061 14,105
Subtotal 67,723 57,652 58,935
Total 246,722 217,898 215,084
Financial Service      
Disclosure of detailed information about operating expenses [line items]      
Settlement related cost 11,713 10,592 9,832
Employee benefit expenses 10,865 8,499 6,783
Professional and outsourcing services expenses 8,120 8,997 8,516
Provision for loss allowance 1,062 574 356
Depreciation and amortization 6,740 5,388 4,700
License fees 839    
Interest expenses 6,997 2,278 544
Advertising and promotion expenses 3,028 4,528 4,050
Tax and charges 2,054 2,014 2,248
Other 5,361 5,616 5,391
Subtotal 25,019 19,824 16,933
Total ¥ 56,779 ¥ 48,486 ¥ 42,420