Consolidated Balance Sheet
| Concept | As at 2023-12-31 | As at 2023-09-30 | 
|---|---|---|
| Consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Non-current assets | ||
| Property, plant and equipment | ||
| Buildings and structures | 
                                                1,744,217,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,742,948,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accumulated depreciation | 
                                                -1,383,871,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,372,579,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Buildings and structures, net | 
                                                360,345,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                370,369,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Own-used assets | ||
| Land | 
                                                1,182,434,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,234,103,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                16,354,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,182,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                2,715,956,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,710,437,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accumulated depreciation | 
                                                -2,491,387,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -2,483,821,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other, net | 
                                                224,569,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                226,616,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | 
                                                1,783,703,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,859,270,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Intangible assets | 
                                                67,163,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                73,043,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                35,276,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                36,854,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax assets | 
                                                3,114,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                184,369,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                217,266,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                222,760,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                254,121,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                2,073,627,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,186,435,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | ||
| Cash and deposits | 
                                                1,714,898,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,820,016,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Notes receivable - trade | 
                                                38,588,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,126,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accounts receivable - trade | 
                                                580,222,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                640,303,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Merchandise and finished goods | 
                                                411,084,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                398,519,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Prepaid expenses | 
                                                18,699,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,017,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Work in process | 
                                                86,615,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                99,953,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Raw materials and supplies | 
                                                154,269,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                148,797,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                214,795,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                140,837,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                3,496,456,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,576,144,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                5,570,083,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,762,579,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Non-current liabilities | ||
| Long-term borrowings | 
                                                52,810,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                81,973,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax liabilities | 
                                                144,965,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                132,517,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Lease liabilities | 
                                                5,020,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,914,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retirement benefit liability | 
                                                251,573,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                250,113,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for retirement benefits for directors (and other officers) | 
                                                62,090,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                60,965,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                2,680,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,574,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                519,140,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                534,057,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | ||
| Notes and accounts payable - trade | 
                                                196,219,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                199,959,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accounts payable - other | 
                                                255,698,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                73,022,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                5,781,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,728,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current portion of long-term borrowings | 
                                                123,600,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                140,634,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                105,363,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                137,785,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                1,012,792,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,070,350,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                1,531,932,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,604,408,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | ||
| Shareholders' equity | 
                                                3,857,951,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,941,297,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share capital | 
                                                468,134,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                468,134,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                388,134,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                388,134,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                3,001,876,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,085,221,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -194,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -194,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                180,199,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                216,874,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation difference on available-for-sale securities | 
                                                8,055,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,160,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Foreign currency translation adjustment | 
                                                172,143,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                207,713,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                4,038,151,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,158,171,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                5,570,083,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,762,579,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Valuation and translation adjustments |