Semi-Annual Consolidated Balance Sheet
| Concept | As at 2024-12-31 | As at 2024-06-30 | 
|---|---|---|
| Semi-annual consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                29,207,853,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,750,897,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                2,598,299,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,263,746,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -30,003,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -28,922,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                39,233,512,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                38,431,931,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                8,008,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Intangible assets | ||
| Goodwill | 
                                                388,654,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                2,400,681,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                1,559,865,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,521,141,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                386,143,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                361,758,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                332,568,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                315,539,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -67,165,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -50,799,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                3,968,556,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,521,141,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                43,202,069,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,953,073,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Short-term borrowings | 
                                                6,500,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,700,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                140,921,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                241,478,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,113,704,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                962,679,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                23,189,477,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,385,990,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Asset retirement obligations | 
                                                1,533,222,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,530,954,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                62,051,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                57,702,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                1,622,549,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,614,737,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                24,812,026,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,000,728,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for bonuses | 
                                                270,989,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                315,737,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                26,690,403,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,348,152,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                221,519,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,133,180,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                -8,705,721,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -51,757,334,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -292,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -324,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                18,205,908,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,723,673,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                12,658,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,318,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred gains or losses on hedges | 
                                                520,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,333,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Foreign currency translation adjustment | 
                                                3,644,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,661,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                16,823,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                51,312,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share acquisition rights | 
                                                167,310,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                177,358,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                18,390,042,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,952,345,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                43,202,069,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,953,073,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |