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 | 
                                                -4,426,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                8,263,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,809,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                13,964,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Depreciation | — | — | 
                                                10,584,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,702,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Impairment losses | — | — | 
                                                169,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Increase (decrease) in allowance for doubtful accounts | — | — | 
                                                62,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,038,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest and dividend income | — | — | 
                                                -20,912,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -16,771,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest expenses | — | — | 
                                                1,220,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,364,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Foreign exchange losses (gains) | — | — | 
                                                1,654,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -7,319,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Increase (decrease) in retirement benefit liability | — | — | 
                                                680,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,601,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Share of loss (profit) of entities accounted for using equity method | — | — | 
                                                -5,058,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,366,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Decrease (increase) in inventories | — | — | 
                                                9,209,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -7,315,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Increase (decrease) in trade payables | — | — | 
                                                -22,530,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                54,175,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Other, net | — | — | 
                                                8,260,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,690,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Subtotal | — | — | 
                                                41,177,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,033,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest and dividends received | — | — | 
                                                18,783,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,889,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest paid | — | — | 
                                                -1,081,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,249,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Income taxes paid | — | — | 
                                                -12,118,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -11,583,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net cash provided by (used in) operating activities | — | — | 
                                                46,761,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,090,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash flows from investing activities | |||||||
| Purchase of property, plant and equipment | — | — | 
                                                -9,581,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -13,520,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Purchase of investment securities | — | — | 
                                                -7,885,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -7,899,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Proceeds from sale of investment securities | — | — | 
                                                513,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,095,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Other, net | — | — | 
                                                207,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                409,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net cash provided by (used in) investing activities | — | — | 
                                                -21,172,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -20,201,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash flows from financing activities | |||||||
| Proceeds from issuance of bonds | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Redemption of bonds | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -10,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Repayments of long-term borrowings | — | — | 
                                                -759,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -664,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Purchase of treasury shares | — | — | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Dividends paid | — | — | 
                                                -9,676,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -9,136,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net cash provided by (used in) financing activities | — | — | 
                                                -15,049,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -8,894,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Dividends paid to non-controlling interests | — | — | 
                                                -18,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -51,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Other, net | — | — | 
                                                -872,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -867,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Effect of exchange rate change on cash and cash equivalents | — | — | 
                                                -2,351,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,938,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net increase (decrease) in cash and cash equivalents | — | — | 
                                                8,188,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -9,067,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash and cash equivalents | — | 
                                                332,761,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
                                                324,507,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                332,755,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |