Semi-Annual Consolidated Balance Sheet
| Concept | As at 2024-03-31 | As at 2023-12-31 | 
|---|---|---|
| Semi-annual consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                41,124,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                52,879,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                26,176,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,504,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -286,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -269,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                302,902,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                298,972,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                294,930,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                286,790,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Buildings and structures | — | — | 
| Buildings and structures, net | 
                                                89,177,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                86,796,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Machinery, equipment and vehicles | — | — | 
| Machinery, equipment and vehicles, net | 
                                                138,273,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                127,020,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | — | — | 
| Other, net | 
                                                67,480,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                72,973,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Intangible assets | 
                                                17,319,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,802,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                45,302,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,915,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                19,370,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,750,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                26,036,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,268,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -104,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -102,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                357,552,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                346,508,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                660,455,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                645,480,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Notes and accounts payable - trade | 
                                                37,598,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                38,262,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Short-term borrowings | 
                                                18,311,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,653,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                10,680,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,783,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                42,466,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                39,141,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                132,636,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                142,822,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Bonds payable | 
                                                25,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,000,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term borrowings | 
                                                45,783,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                45,992,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retirement benefit liability | 
                                                3,510,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,524,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                31,859,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,489,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                108,594,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                107,459,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                241,230,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                250,281,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Share capital | 
                                                55,935,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                55,935,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | ||
| Capital surplus | 
                                                54,197,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                54,197,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                232,074,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                221,333,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -121,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -120,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                342,085,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                331,344,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                7,925,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,812,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred gains or losses on hedges | 
                                                -70,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                103,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Foreign currency translation adjustment | 
                                                57,747,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                45,170,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Remeasurements of defined benefit plans | 
                                                11,536,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,767,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                77,139,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                63,854,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                419,224,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                395,199,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                660,455,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                645,480,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |