Quarterly Consolidated Balance Sheet
| Concept | As at 2024-09-30 | As at 2024-03-31 | 
|---|---|---|
| Quarterly consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                2,794,617,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,459,860,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Securities | 
                                                1,100,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,100,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Merchandise and finished goods | 
                                                3,072,560,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,008,794,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                916,365,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                893,157,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -3,082,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,118,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                18,325,702,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,671,531,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                4,880,247,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,871,373,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Buildings and structures | — | — | 
| Buildings and structures, net | 
                                                889,349,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                916,158,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Machinery, equipment and vehicles | — | — | 
| Machinery, equipment and vehicles, net | 
                                                250,443,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                167,294,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Land | 
                                                3,663,769,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,664,070,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Leased assets | — | — | 
| Leased assets, net | 
                                                11,548,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,272,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                2,678,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                50,690,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Other | 
                                                311,873,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                342,692,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                311,873,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                342,692,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                4,533,095,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,732,938,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                3,911,867,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,038,383,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax assets | 
                                                6,679,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,432,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                252,937,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                326,036,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -15,064,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -15,764,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                9,725,216,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,947,003,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                28,050,919,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                29,618,535,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Short-term borrowings | 
                                                1,200,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                90,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                52,180,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                491,462,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,028,832,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,071,403,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                7,364,472,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,675,520,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Long-term borrowings | 
                                                200,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                100,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                9,682,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,532,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                432,217,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                326,581,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                7,796,690,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,002,101,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                565,295,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                565,295,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                376,857,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                376,857,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                18,535,426,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,881,858,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -25,537,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -25,537,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                19,452,040,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,798,472,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                678,284,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                683,858,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Remeasurements of defined benefit plans | 
                                                123,903,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                134,102,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                802,188,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                817,961,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                20,254,228,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,616,433,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                28,050,919,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                29,618,535,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |