Quarterly Consolidated Balance Sheet
| Concept | As at 2025-02-28 | As at 2024-08-31 | 
|---|---|---|
| Quarterly consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                67,614,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                71,949,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Merchandise and finished goods | 
                                                14,888,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,206,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Raw materials and supplies | 
                                                1,729,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,637,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                4,856,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,944,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                93,167,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                98,158,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                63,917,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                55,772,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Buildings and structures | — | — | 
| Buildings and structures, net | 
                                                27,675,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,562,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Machinery, equipment and vehicles | — | — | 
| Machinery, equipment and vehicles, net | 
                                                1,503,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,269,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Land | 
                                                6,824,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,844,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Leased assets | — | — | 
| Leased assets, net | 
                                                33,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                38,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                3,242,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,635,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Intangible assets | 
                                                570,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                578,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                13,705,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,626,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Deferred tax assets | 
                                                2,351,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,723,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                158,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                136,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -11,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -11,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                78,194,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                69,977,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                171,361,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                168,136,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Income taxes payable | 
                                                1,662,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,625,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Asset retirement obligations | 
                                                224,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                259,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                10,566,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,670,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                31,923,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                32,644,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Long-term borrowings | 
                                                6,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Asset retirement obligations | 
                                                8,153,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,006,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                107,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                98,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                26,557,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                24,688,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                58,481,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                57,332,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                8,612,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,612,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                11,868,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,658,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                88,237,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                84,811,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -8,220,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -7,590,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                100,497,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                97,492,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Foreign currency translation adjustment | 
                                                11,869,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,825,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                11,869,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,825,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share acquisition rights | 
                                                514,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                486,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                112,880,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                110,803,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                171,361,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                168,136,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |