Quarterly Balance Sheet
| Concept | As at 2023-12-31 | As at 2023-03-31 | 
|---|---|---|
| Quarterly balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                3,503,124,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,391,266,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Merchandise and finished goods | 
                                                764,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                764,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Work in process | 
                                                6,560,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                135,660,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Raw materials and supplies | 
                                                6,306,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,409,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                112,502,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                90,284,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -600,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                6,425,411,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,244,129,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                601,010,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                611,843,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Land | 
                                                371,169,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                371,169,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | — | — | 
| Other, net | 
                                                229,841,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                240,674,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                456,098,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                534,247,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Investments and other assets | 
                                                1,936,301,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,947,861,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                1,478,437,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,508,809,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                457,864,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                439,052,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                2,993,410,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,093,952,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                9,418,821,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,338,082,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Income taxes payable | 
                                                211,359,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                303,082,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                255,416,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                346,927,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                1,567,898,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,945,784,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Other | 
                                                11,580,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,480,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                734,273,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                715,940,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                2,302,172,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,661,724,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                575,681,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                571,538,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                437,446,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                433,303,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                5,517,793,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,085,834,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -41,710,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -41,612,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                6,489,211,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,049,064,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                483,994,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                507,303,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                483,994,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                507,303,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share acquisition rights | 
                                                143,442,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                119,990,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                7,116,648,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,676,357,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                9,418,821,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,338,082,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |