Semi-Annual Consolidated Statement Of Cash Flows
| Concept | 2024-04-01 to 2025-03-31 | As at 2025-03-31 | 2024-04-01 to 2025-03-31 | 2023-04-01 to 2024-03-31 | As at 2024-03-31 | 2023-04-01 to 2024-03-31 | As at 2023-03-31 | 
|---|---|---|---|---|---|---|---|
| Semi-annual consolidated statement of cash flows | |||||||
| Statement of cash flows | |||||||
| Cash flows from operating activities | |||||||
| Profit (loss) before income taxes | 
                                                14,681,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                39,355,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,495,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                30,510,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Depreciation | — | — | 
                                                14,394,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,574,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Impairment losses | — | — | 
                                                1,248,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                491,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Increase (decrease) in allowance for doubtful accounts | — | — | 
                                                2,528,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,363,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest and dividend income | — | — | 
                                                -474,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -368,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest expenses | — | — | 
                                                3,449,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,866,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Increase (decrease) in provision for bonuses | — | — | 
                                                -71,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -89,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Decrease (increase) in trade receivables | — | — | 
                                                -2,031,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,329,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Decrease (increase) in inventories | — | — | 
                                                142,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,914,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Other, net | — | — | 
                                                -4,526,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,141,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Subtotal | — | — | 
                                                9,223,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,903,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest and dividends received | — | — | 
                                                469,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                361,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest paid | — | — | 
                                                -3,435,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,821,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Income taxes paid | — | — | 
                                                -11,119,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -11,491,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net cash provided by (used in) operating activities | — | — | 
                                                -4,482,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                38,003,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash flows from investing activities | |||||||
| Purchase of investment securities | — | — | 
                                                -6,808,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,581,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Proceeds from sale of investment securities | — | — | 
                                                6,536,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,468,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Other, net | — | — | 
                                                -7,055,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,833,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net cash provided by (used in) investing activities | — | — | 
                                                -13,665,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -18,266,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash flows from financing activities | |||||||
| Proceeds from issuance of bonds | — | — | 
                                                20,026,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,976,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Proceeds from long-term borrowings | — | — | 
                                                85,700,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                85,500,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Redemption of bonds | — | — | 
                                                -21,503,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -20,240,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Repayments of long-term borrowings | — | — | 
                                                -52,500,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -38,600,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Purchase of treasury shares | — | — | 
                                                -19,221,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,367,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Dividends paid | — | — | 
                                                -19,540,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -15,208,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net cash provided by (used in) financing activities | — | — | 
                                                2,838,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -7,879,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Other, net | — | — | 
                                                -389,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -374,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net increase (decrease) in cash and cash equivalents | — | — | 
                                                -15,310,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,857,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash and cash equivalents | — | 
                                                49,250,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                64,560,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                52,421,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |