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 | 
                                                2,892,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                3,836,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,706,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                1,915,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Depreciation | — | — | 
                                                1,968,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,059,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Impairment losses | — | — | 
                                                172,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,848,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Increase (decrease) in allowance for doubtful accounts | — | — | 
                                                1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -28,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest and dividend income | — | — | 
                                                -347,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -305,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest expenses | — | — | 
                                                277,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                233,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Increase (decrease) in retirement benefit liability | — | — | 
                                                29,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Increase (decrease) in provision for bonuses | — | — | 
                                                79,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                57,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Share of loss (profit) of entities accounted for using equity method | — | — | 
                                                -464,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -378,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Decrease (increase) in trade receivables | — | — | 
                                                139,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                733,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Decrease (increase) in inventories | — | — | 
                                                159,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -369,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Increase (decrease) in trade payables | — | — | 
                                                -1,482,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,423,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Other, net | — | — | 
                                                -15,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Subtotal | — | — | 
                                                2,996,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,790,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest and dividends received | — | — | 
                                                356,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                316,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest paid | — | — | 
                                                -277,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -233,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Income taxes paid | — | — | 
                                                -659,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -439,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net cash provided by (used in) operating activities | — | — | 
                                                2,416,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,432,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash flows from investing activities | |||||||
| Purchase of property, plant and equipment | — | — | 
                                                -1,856,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,320,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Purchase of investment securities | — | — | 
                                                -12,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -12,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Proceeds from sale of investment securities | — | — | 
                                                334,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,274,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Loan advances | — | — | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Proceeds from collection of loans receivable | — | — | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Other, net | — | — | 
                                                -110,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -162,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net cash provided by (used in) investing activities | — | — | 
                                                -1,645,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -301,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash flows from financing activities | |||||||
| Proceeds from long-term borrowings | — | — | 
                                                5,200,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,900,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Repayments of long-term borrowings | — | — | 
                                                -6,847,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -7,565,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Purchase of treasury shares | — | — | 
                                                -300,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -200,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Dividends paid | — | — | 
                                                -633,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -558,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net cash provided by (used in) financing activities | — | — | 
                                                -31,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,966,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Effect of exchange rate change on cash and cash equivalents | — | — | 
                                                283,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -161,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net increase (decrease) in cash and cash equivalents | — | — | 
                                                1,023,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -996,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash and cash equivalents | — | 
                                                5,962,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                4,939,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                5,730,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |