Semi-Annual Consolidated Balance Sheet
| Concept | As at 2024-09-30 | As at 2024-03-31 | 
|---|---|---|
| Semi-annual consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                4,922,347,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,941,124,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Inventories | 
                                                1,060,551,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,002,371,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,036,857,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                403,721,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -912,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -420,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                8,494,943,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,072,378,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                12,130,450,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,794,253,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Buildings and structures | 
                                                10,734,022,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,639,157,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accumulated depreciation | 
                                                -5,692,807,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -5,420,551,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Buildings and structures, net | 
                                                5,041,215,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,218,605,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Land | 
                                                2,490,358,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,490,358,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                137,008,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                705,730,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                42,576,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,426,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accumulated depreciation | 
                                                -32,652,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -27,764,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other, net | 
                                                9,923,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,661,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Other | 
                                                156,009,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                172,246,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                156,009,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                172,246,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                2,349,345,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,010,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Deferred tax assets | 
                                                168,089,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                168,089,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                518,284,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                228,674,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -308,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -321,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                14,635,805,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,976,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                23,130,748,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,048,879,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Lease liabilities | 
                                                743,985,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                710,228,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                405,668,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                403,214,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Asset retirement obligations | 
                                                17,400,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,400,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                374,664,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                423,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                5,339,430,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,036,478,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Long-term borrowings | 
                                                4,224,609,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,496,455,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Lease liabilities | 
                                                4,021,690,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,952,142,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retirement benefit liability | 
                                                1,697,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,341,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                163,305,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                144,863,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                9,499,573,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,637,312,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                14,839,004,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,673,791,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for bonuses | 
                                                195,470,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                179,252,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax liabilities | 
                                                1,088,270,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,041,508,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Share capital | 
                                                50,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | ||
| Capital surplus | 
                                                1,142,574,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,131,084,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                6,028,571,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,090,477,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -173,481,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -199,309,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                7,047,664,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,072,253,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                93,818,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Foreign currency translation adjustment | 
                                                -620,325,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -542,988,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                -526,506,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -542,988,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-controlling interests | 
                                                1,770,586,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,845,822,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                8,291,744,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,375,087,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                23,130,748,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,048,879,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |