Semi-Annual Consolidated Statement Of Cash Flows
| Concept | As at 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2021-04-01 to 2022-03-31 | As at 2022-03-31 | 2021-04-01 to 2022-03-31 | As at 2021-03-31 | 
|---|---|---|---|---|---|---|---|
| Semi-annual consolidated statement of cash flows | |||||||
| Statement of cash flows | |||||||
| Cash flows from operating activities | |||||||
| Profit (loss) before income taxes | — | 
                                                5,278,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,412,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,404,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                19,317,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
| Depreciation | — | — | 
                                                1,997,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,945,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest and dividend income | — | — | 
                                                -62,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -35,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest expenses | — | — | 
                                                44,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                45,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Increase (decrease) in retirement benefit liability | — | — | 
                                                56,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                74,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Foreign exchange losses (gains) | — | — | 
                                                -959,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -544,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Increase (decrease) in provision for bonuses | — | — | 
                                                71,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                51,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Decrease (increase) in trade receivables | — | — | 
                                                4,448,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -7,402,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Decrease (increase) in inventories | — | — | 
                                                -3,877,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,082,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Increase (decrease) in trade payables | — | — | 
                                                238,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,608,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Other, net | — | — | 
                                                -887,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,257,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Subtotal | — | — | 
                                                2,762,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,817,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest and dividends received | — | — | 
                                                62,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Interest paid | — | — | 
                                                -46,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -45,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net cash provided by (used in) operating activities | — | — | 
                                                -5,500,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,289,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash flows from investing activities | |||||||
| Purchase of property, plant and equipment | — | — | 
                                                -7,654,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -11,333,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Other, net | — | — | 
                                                15,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -9,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net cash provided by (used in) investing activities | — | — | 
                                                -15,002,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,250,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash flows from financing activities | |||||||
| Proceeds from long-term borrowings | — | — | 
                                                4,750,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                750,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Repayments of long-term borrowings | — | — | 
                                                -3,050,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -750,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Dividends paid | — | — | 
                                                -2,739,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,169,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net cash provided by (used in) financing activities | — | — | 
                                                1,948,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,179,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Effect of exchange rate change on cash and cash equivalents | — | — | 
                                                1,099,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                612,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Net increase (decrease) in cash and cash equivalents | — | — | 
                                                -17,454,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,472,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
| Cash and cash equivalents | 
                                                13,278,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                30,733,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | 
                                                26,260,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |