Semi-Annual Consolidated Balance Sheet
| Concept | As at 2023-09-30 | As at 2023-03-31 | 
|---|---|---|
| Semi-annual consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                2,333,442,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,298,395,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                76,495,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                91,083,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -6,051,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -7,951,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                7,766,623,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,222,092,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                2,068,767,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,068,625,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Buildings and structures | — | — | 
| Buildings and structures, net | 
                                                663,113,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                680,703,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Land | 
                                                1,227,515,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,218,740,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                23,530,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                620,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | — | — | 
| Other, net | 
                                                154,608,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                168,561,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Other | 
                                                22,229,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,856,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                221,028,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                225,214,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                777,318,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                530,054,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                445,456,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                366,023,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax assets | 
                                                8,862,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,027,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                323,299,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                160,304,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -300,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -300,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                3,067,114,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,823,894,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                10,833,738,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,045,986,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Notes and accounts payable - trade | 
                                                1,009,188,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                828,890,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Short-term borrowings | 
                                                1,279,061,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,315,012,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                50,589,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,854,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                523,678,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                379,555,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                3,635,713,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,166,205,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Long-term borrowings | 
                                                513,541,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                613,475,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retirement benefit liability | 
                                                540,180,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                399,050,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                68,377,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                72,564,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                1,272,030,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,273,332,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                4,907,744,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,439,538,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for retirement benefits for directors (and other officers) | 
                                                29,467,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,438,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for bonuses | 
                                                185,935,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                116,080,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax liabilities | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,664,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                1,037,085,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,037,085,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                876,504,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                875,135,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                3,704,687,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,508,252,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -242,853,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -247,654,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                5,375,423,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,172,819,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                149,832,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                94,826,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Foreign currency translation adjustment | 
                                                273,214,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                218,054,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                423,047,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                312,880,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-controlling interests | 
                                                127,523,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                120,747,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                5,925,993,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,606,448,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                10,833,738,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,045,986,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |