Semi-Annual Consolidated Balance Sheet
| Concept | As at 2024-09-30 | As at 2024-03-31 | 
|---|---|---|
| Semi-annual consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                105,103,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                105,885,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                1,250,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,374,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -19,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -18,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                138,277,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                137,507,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                13,598,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,875,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Buildings and structures | — | — | 
| Buildings and structures, net | 
                                                3,400,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,366,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Machinery, equipment and vehicles | — | — | 
| Machinery, equipment and vehicles, net | 
                                                253,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                238,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Land | 
                                                8,971,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,278,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                174,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                177,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | — | — | 
| Other, net | 
                                                797,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                814,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Intangible assets | 
                                                867,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                803,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                31,709,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,890,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                7,623,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,624,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax assets | 
                                                45,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                247,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                2,594,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,554,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -162,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -143,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                46,176,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                45,569,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                184,454,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                183,076,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retirement benefit asset | 
                                                1,608,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,594,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Notes and accounts payable - trade | 
                                                7,623,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,787,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Short-term borrowings | 
                                                3,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                1,447,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,353,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                2,104,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,491,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                22,762,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,359,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Retirement benefit liability | 
                                                148,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                147,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                2,707,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,619,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                4,222,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,106,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                26,984,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,466,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for retirement benefits for directors (and other officers) | 
                                                1,300,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,284,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for bonuses | 
                                                1,707,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,925,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax liabilities | 
                                                65,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                55,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for bonuses for directors (and other officers) | 
                                                51,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                103,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                2,662,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,662,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                3,170,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,137,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                155,241,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                152,444,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -9,479,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -9,518,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                151,593,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                148,724,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                9,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Foreign currency translation adjustment | 
                                                5,746,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,739,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Remeasurements of defined benefit plans | 
                                                119,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                135,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                5,875,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,885,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                157,469,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                152,610,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                184,454,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                183,076,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |