Semi-Annual Balance Sheet
| Concept | As at 2024-06-30 | As at 2023-12-31 | 
|---|---|---|
| Semi-annual balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                139,275,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                134,937,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                16,349,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,396,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -338,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -341,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                310,344,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                314,787,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | ||
| Property, plant and equipment | 
                                                346,682,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                347,586,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Tools, furniture and fixtures | 
                                                44,517,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,677,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accumulated depreciation | 
                                                -35,845,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -35,068,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Tools, furniture and fixtures, net | 
                                                8,671,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,609,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Land | 
                                                124,425,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                124,291,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Leased assets | 
                                                22,590,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,469,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accumulated depreciation | 
                                                -14,950,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -14,081,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Leased assets, net | 
                                                7,639,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,387,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                4,411,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,040,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Intangible assets | 
                                                20,341,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,417,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Goodwill | 
                                                8,289,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,052,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                12,052,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,365,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                82,792,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                80,580,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                118,035,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                118,242,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term loans receivable | 
                                                1,197,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,218,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax assets | 
                                                7,830,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,621,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                27,920,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,574,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -2,357,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,401,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                485,059,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                487,247,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                795,404,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                802,035,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Short-term borrowings | 
                                                55,156,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                55,608,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Lease liabilities | 
                                                3,376,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,551,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                12,344,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,576,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Asset retirement obligations | 
                                                13,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                43,833,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,495,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                247,128,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                257,877,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Non-current liabilities | 
                                                94,518,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                98,025,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term borrowings | 
                                                13,398,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,690,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Lease liabilities | 
                                                4,534,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,282,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Asset retirement obligations | 
                                                4,824,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,813,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                8,905,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,831,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                341,646,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                355,902,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Provision for retirement benefits for directors (and other officers) | 
                                                5,642,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,113,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for bonuses | 
                                                5,515,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,793,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                11,014,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,014,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | ||
| Capital surplus | 
                                                9,632,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,632,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | ||
| Retained earnings | 
                                                359,815,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                343,395,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -38,091,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -26,185,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                342,370,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                337,856,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                38,799,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,112,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred gains or losses on hedges | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Revaluation reserve for land | 
                                                99,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                99,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                64,227,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                62,281,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                453,757,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                446,132,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                795,404,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                802,035,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |