Quarterly Balance Sheet
| Concept | As at 2024-08-31 | As at 2024-02-29 | 
|---|---|---|
| Quarterly balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                2,233,168,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,293,105,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Merchandise and finished goods | 
                                                218,706,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                203,640,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Work in process | 
                                                61,845,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,921,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Raw materials and supplies | 
                                                371,635,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                416,321,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                215,083,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                183,111,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -71,407,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -75,293,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                6,031,298,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,267,326,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                18,274,256,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,124,687,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Land | 
                                                5,811,467,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,796,886,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Leased assets | — | — | 
| Leased assets, net | 
                                                58,175,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                56,851,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                15,223,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                239,930,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | — | — | 
| Other, net | 
                                                1,084,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,010,944,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                408,246,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                389,928,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Investments and other assets | 
                                                4,921,801,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,944,918,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                862,315,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                909,626,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax assets | 
                                                594,871,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                591,956,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                210,681,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                200,118,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                23,604,304,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,459,534,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                29,635,603,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,726,861,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Income taxes payable | 
                                                258,626,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                212,010,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Asset retirement obligations | 
                                                23,401,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,245,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                590,552,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                574,102,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                7,594,262,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,901,554,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Long-term borrowings | 
                                                5,835,555,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,917,976,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Asset retirement obligations | 
                                                1,488,762,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,493,797,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                32,476,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                48,494,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                8,951,502,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,965,157,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                16,545,764,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,866,712,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                9,002,762,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,002,762,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                2,193,474,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,193,474,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                1,793,825,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,597,268,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -344,987,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -346,947,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                12,645,075,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,446,558,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                427,787,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                461,674,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                444,763,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                413,590,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                13,089,839,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,860,148,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                29,635,603,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,726,861,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |