Semi-Annual Balance Sheet
| Concept | As at 2024-09-30 | As at 2024-03-31 | 
|---|---|---|
| Semi-annual balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                25,986,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,838,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Securities | 
                                                199,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                600,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                2,682,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,046,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -34,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -32,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                48,007,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,077,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | ||
| Property, plant and equipment | 
                                                9,242,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,718,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Intangible assets | 
                                                116,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                144,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                8,262,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,193,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                14,375,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,217,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                6,119,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,030,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -6,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -6,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                23,734,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,081,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                71,742,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                73,159,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Accounts payable - trade | 
                                                1,774,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,382,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                293,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,115,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,826,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,265,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                4,782,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,988,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Non-current liabilities | 
                                                1,667,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,425,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,063,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                844,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                6,449,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,414,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Provision for bonuses | 
                                                754,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,085,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                7,081,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,081,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | ||
| Capital surplus | 
                                                10,449,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,449,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | ||
| Retained earnings | 
                                                44,719,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                44,702,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -1,446,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,446,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                60,803,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                60,786,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                1,789,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,821,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                4,488,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,958,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                65,292,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                65,745,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                71,742,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                73,159,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |