Semi-Annual Balance Sheet
| Concept | As at 2023-12-31 | As at 2023-03-31 | 
|---|---|---|
| Semi-annual balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                823,554,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,350,536,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                72,462,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                389,074,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -4,420,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,898,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                10,619,070,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,570,124,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | ||
| Property, plant and equipment | 
                                                7,098,629,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,694,212,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Land | 
                                                4,035,924,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,949,724,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                17,936,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                65,381,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | — | — | 
| Other, net | 
                                                18,090,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,670,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Goodwill | 
                                                136,509,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                165,761,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                183,860,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                199,122,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                47,351,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,361,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                614,101,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                511,684,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                1,044,425,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                896,410,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term loans receivable from subsidiaries and associates | 
                                                140,195,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                96,503,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                169,360,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                122,696,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -142,630,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -98,938,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                8,326,914,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,789,745,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                18,945,985,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,359,870,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Short-term borrowings | 
                                                1,500,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,100,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Lease liabilities | 
                                                8,846,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,203,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                38,702,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,435,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                864,098,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                501,663,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                5,843,850,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,542,370,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Non-current liabilities | 
                                                2,201,168,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,035,197,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Long-term borrowings | 
                                                1,583,437,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,206,751,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Lease liabilities | 
                                                35,004,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                110,627,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                38,820,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                257,930,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                8,045,018,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,577,567,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Provision for retirement benefits for directors (and other officers) | 
                                                72,215,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                67,790,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for bonuses | 
                                                34,264,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                85,273,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred tax liabilities | 
                                                389,122,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                317,473,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Net assets | ||
| Share capital | 
                                                1,290,800,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,290,800,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | ||
| Capital surplus | ||
| Capital surplus | 
                                                1,269,783,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,269,783,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | ||
| Retained earnings | 
                                                8,324,968,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,235,807,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -195,587,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -166,637,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                10,689,964,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,629,753,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                223,279,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                154,924,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Deferred gains or losses on hedges | 
                                                -352,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,673,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                199,052,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                138,149,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                10,900,966,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,782,302,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                18,945,985,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,359,870,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |