Quarterly Balance Sheet
| Concept | As at 2024-07-31 | As at 2024-01-31 | 
|---|---|---|
| Quarterly balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                2,570,915,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,774,994,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Work in process | 
                                                24,070,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,410,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Raw materials and supplies | 
                                                86,210,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                75,438,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                41,506,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                70,007,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                5,070,164,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,844,110,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                5,065,432,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,745,683,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Buildings | — | — | 
| Buildings, net | 
                                                2,920,816,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,650,339,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Structures | — | — | 
| Structures, net | 
                                                642,833,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                567,219,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Land | 
                                                906,631,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                906,631,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                23,525,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                87,757,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | — | — | 
| Other, net | 
                                                571,624,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                533,735,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                82,664,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                79,491,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Other | 
                                                82,664,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                79,491,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                1,465,905,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,494,293,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                65,509,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,315,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax assets | 
                                                413,838,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                421,510,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                96,772,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                93,065,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                6,614,002,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,319,468,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                11,684,167,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,163,578,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Short-term borrowings | 
                                                136,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                592,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                730,986,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Asset retirement obligations | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,922,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                401,890,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                571,698,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                5,191,648,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,150,219,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Bonds payable | 
                                                294,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                578,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term borrowings | 
                                                1,087,951,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,365,509,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Asset retirement obligations | 
                                                11,133,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,620,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                78,733,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                98,660,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                1,569,043,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,146,698,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                6,760,692,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,296,918,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                325,832,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                325,832,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                341,127,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                341,127,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                4,322,840,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,286,545,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -101,358,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -101,358,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                4,888,441,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,852,146,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                35,033,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,513,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                35,033,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,513,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                4,923,475,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,866,660,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                11,684,167,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,163,578,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |