Consolidated Balance Sheet
| Concept | As at 2023-07-31 | As at 2023-04-30 | 
|---|---|---|
| Consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                4,787,798,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,377,801,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Notes and accounts receivable - trade | 
                                                2,318,288,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,387,056,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Securities | 
                                                3,199,600,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,700,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Merchandise and finished goods | 
                                                268,381,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                318,404,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Work in process | 
                                                200,700,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                205,874,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Raw materials and supplies | 
                                                157,916,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                130,081,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                11,479,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,678,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                11,997,021,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,374,561,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                5,449,806,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,764,737,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                2,838,299,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,331,555,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investment securities | 
                                                2,383,036,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,877,946,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                198,779,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                196,368,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                2,604,287,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,424,867,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other, net | 
                                                540,652,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                550,244,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Buildings and structures | — | — | 
| Buildings and structures, net | 
                                                821,899,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                836,654,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Own-used assets | ||
| Machinery, equipment and vehicles | — | — | 
| Machinery, equipment and vehicles, net | 
                                                1,241,735,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,037,968,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | — | — | 
| Intangible assets | ||
| Intangible assets | 
                                                7,219,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,314,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Assets | 
                                                17,446,828,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,139,298,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Current portion of long-term borrowings | 
                                                79,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                102,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                122,104,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                142,722,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provisions | ||
| Provision for bonuses | 
                                                122,542,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                231,185,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                749,878,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                688,961,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                1,820,268,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,967,750,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Long-term borrowings | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,500,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retirement benefit liability | 
                                                294,277,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                284,945,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for retirement benefits for directors (and other officers) | 
                                                300,458,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                300,532,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                243,785,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                126,805,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                838,521,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                714,782,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                2,658,789,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,682,533,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | ||
| Shareholders' equity | 
                                                13,845,763,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,030,881,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share capital | 
                                                592,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                592,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                464,241,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                464,241,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                12,799,282,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,984,304,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -9,760,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -9,665,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                942,274,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,425,884,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation difference on available-for-sale securities | 
                                                942,274,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                741,945,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Foreign currency translation adjustment | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                683,939,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                14,788,038,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,456,765,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                17,446,828,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,139,298,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Valuation and translation adjustments |