Semi-Annual Balance Sheet
| Concept | As at 2024-09-30 | As at 2024-03-31 | 
|---|---|---|
| Semi-annual balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                1,733,296,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,001,232,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                175,652,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                90,601,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -4,640,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -6,183,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                5,552,003,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,067,691,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                4,577,819,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,541,253,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Machinery and equipment | 
                                                681,231,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                646,550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accumulated depreciation | 
                                                -586,510,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -550,589,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Machinery and equipment, net | 
                                                94,721,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                95,962,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Land | 
                                                3,480,785,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,480,785,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,114,959,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,043,528,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accumulated depreciation | 
                                                -942,895,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -932,689,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other, net | 
                                                172,064,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                110,839,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Intangible assets | 
                                                81,023,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                87,414,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Goodwill | 
                                                31,200,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,083,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                49,823,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,331,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                1,161,091,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,142,297,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                1,859,093,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,881,166,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax assets | 
                                                9,299,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,380,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                217,543,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                265,247,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -11,185,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -11,181,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                6,517,935,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,509,833,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                12,069,938,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,577,525,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Short-term borrowings | 
                                                538,520,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                556,835,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                48,838,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                74,517,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                172,987,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                272,340,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                2,765,343,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,270,133,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Non-current liabilities | 
                                                1,095,471,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,069,088,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term borrowings | 
                                                538,092,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                468,359,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                30,406,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                49,372,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                3,860,813,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,339,221,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Provision for retirement benefits for directors (and other officers) | 
                                                164,691,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                158,113,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for bonuses | 
                                                101,574,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                108,168,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax liabilities | 
                                                89,377,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                107,635,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Net assets | ||
| Share capital | 
                                                4,090,270,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,090,270,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | ||
| Capital surplus | ||
| Capital surplus | 
                                                2,582,420,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,629,074,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | ||
| Retained earnings | 
                                                806,846,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                856,707,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -83,337,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -103,372,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                7,396,200,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,472,679,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                195,601,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                250,405,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                604,025,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                607,976,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                8,209,125,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,238,304,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                12,069,938,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,577,525,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |