Consolidated Statement Of Cash Flows
| Concept | As at 2024-09-30 | 2023-10-01 to 2024-09-30 | 2023-10-01 to 2024-09-30 | As at 2023-09-30 | 2022-10-01 to 2023-09-30 | 2022-10-01 to 2023-09-30 | As at 2022-09-30 | 
|---|---|---|---|---|---|---|---|
| Consolidated statement of cash flows | |||||||
| Statement of cash flows | |||||||
| Cash flows from operating activities | |||||||
| Profit (loss) before income taxes | — | 
                                                1,445,395,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,358,673,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                275,126,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,049,151,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Depreciation | — | — | 
                                                213,094,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                241,237,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Amortization of goodwill | — | — | 
                                                71,247,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                45,351,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Increase (decrease) in allowance for doubtful accounts | — | — | 
                                                9,242,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                33,924,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest and dividend income | — | — | 
                                                -48,974,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -40,489,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest expenses | — | — | 
                                                13,863,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                11,569,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Increase (decrease) in retirement benefit liability | — | — | 
                                                56,665,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                106,561,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Subtotal | — | — | 
                                                3,576,483,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                2,592,563,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Decrease (increase) in trade receivables | — | — | 
                                                614,309,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -500,777,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Decrease (increase) in inventories | — | — | 
                                                358,982,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                224,017,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Income taxes paid | — | — | 
                                                -936,245,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -1,078,532,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Increase (decrease) in trade payables | — | — | 
                                                521,089,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                77,148,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) operating activities | — | — | 
                                                2,825,025,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                1,677,487,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Other, net | — | — | 
                                                -99,142,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                255,365,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest and dividends received | — | — | 
                                                35,185,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                28,711,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Interest paid | — | — | 
                                                -13,863,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -11,569,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Decrease (increase) in distressed receivables | — | — | 
                                                527,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -29,249,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from investing activities | |||||||
| Payments into time deposits | — | — | 
                                                -26,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -22,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Proceeds from withdrawal of time deposits | — | — | 
                                                24,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                24,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Purchase of property, plant and equipment | — | — | 
                                                -121,847,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -83,601,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Proceeds from sale of property, plant and equipment | — | — | 
                                                40,454,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Purchase of investment securities | — | — | 
                                                -137,295,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -706,860,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) investing activities | — | — | 
                                                -641,735,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -2,876,869,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Proceeds from sale of investment securities | — | — | 
                                                336,788,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Loan advances | — | — | 
                                                -893,580,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -371,150,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Proceeds from collection of loans receivable | — | — | 
                                                239,739,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                40,451,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Other, net | — | — | 
                                                -27,510,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -57,208,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash flows from financing activities | |||||||
| Purchase of treasury shares | — | — | 
                                                -78,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -86,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net increase (decrease) in short-term borrowings | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -30,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Dividends paid | — | — | 
                                                -497,273,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -563,452,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Proceeds from long-term borrowings | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                166,250,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Repayments of long-term borrowings | — | — | 
                                                -115,583,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -364,550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net cash provided by (used in) financing activities | — | — | 
                                                -640,082,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -811,465,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Other, net | — | — | 
                                                -27,147,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -19,627,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Net increase (decrease) in cash and cash equivalents | — | — | 
                                                1,543,207,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                -2,010,847,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Cash and cash equivalents | 
                                                12,184,132,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                10,166,176,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                12,113,433,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |