Quarterly Consolidated Balance Sheet
| Concept | As at 2024-10-31 | As at 2024-04-30 | 
|---|---|---|
| Quarterly consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                5,510,267,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,235,833,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Securities | 
                                                3,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,199,680,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Merchandise and finished goods | 
                                                262,911,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                317,536,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Work in process | 
                                                202,466,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                148,283,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Raw materials and supplies | 
                                                153,517,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                133,185,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                9,869,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,068,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                12,031,467,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,883,435,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                2,873,939,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,006,033,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Buildings and structures | — | — | 
| Buildings and structures, net | 
                                                748,826,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                777,718,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Machinery, equipment and vehicles | — | — | 
| Machinery, equipment and vehicles, net | 
                                                1,158,078,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,263,203,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | — | — | 
| Other, net | 
                                                967,034,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                965,111,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Intangible assets | 
                                                4,612,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,636,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                2,671,200,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,008,243,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                2,211,195,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,550,796,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                203,320,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                200,547,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                5,549,752,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,019,913,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                17,581,219,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,903,348,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Income taxes payable | 
                                                157,801,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                192,942,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                489,434,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                388,135,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                1,511,046,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,411,026,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Retirement benefit liability | 
                                                338,482,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                321,924,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                197,416,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                316,236,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                856,113,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                946,093,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                2,367,159,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,357,120,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                592,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                592,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                464,241,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                464,241,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                13,522,198,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,318,954,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -290,110,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -10,110,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                14,288,329,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,365,085,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                925,730,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,181,143,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                925,730,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,181,143,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                15,214,060,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,546,228,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                17,581,219,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,903,348,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |