Quarterly Consolidated Balance Sheet
| Concept | As at 2023-12-31 | As at 2023-03-31 | 
|---|---|---|
| Quarterly consolidated balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | ||
| Cash and deposits | 
                                                690,040,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                660,525,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Merchandise and finished goods | 
                                                185,969,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                166,931,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Work in process | 
                                                142,224,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                143,970,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Raw materials and supplies | 
                                                1,230,584,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,041,795,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                113,473,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                97,798,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -299,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -491,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current assets | 
                                                7,687,975,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,498,631,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | 
                                                4,378,755,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,295,023,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | ||
| Buildings and structures | 
                                                7,579,818,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,575,814,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accumulated depreciation | 
                                                -5,586,861,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -5,485,333,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Buildings and structures, net | 
                                                1,992,957,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,090,481,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Land | 
                                                972,170,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                972,170,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Leased assets | 
                                                17,446,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,446,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Accumulated depreciation | 
                                                -12,793,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -10,176,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Leased assets, net | 
                                                4,652,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,269,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Construction in progress | 
                                                462,696,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                151,683,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | ||
| Other | 
                                                2,054,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,923,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Intangible assets | 
                                                235,154,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                275,625,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | 
                                                2,759,059,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,874,810,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investment securities | 
                                                2,720,346,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,827,284,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                38,713,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,930,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -17,052,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                7,372,969,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,445,459,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Assets | 
                                                15,060,945,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,944,091,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Current liabilities | ||
| Notes and accounts payable - trade | 
                                                4,092,952,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,311,698,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Short-term borrowings | 
                                                200,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                78,030,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                77,575,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                355,553,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                331,114,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                5,721,265,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,834,337,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | ||
| Long-term borrowings | 
                                                2,077,687,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,953,071,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retirement benefit liability | 
                                                265,694,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                246,162,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Asset retirement obligations | 
                                                18,170,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,170,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                42,495,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,495,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                3,202,121,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,093,413,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | 
                                                8,923,387,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,927,750,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Shareholders' equity | ||
| Share capital | 
                                                738,599,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                738,599,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                245,373,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                245,373,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                2,643,941,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,501,849,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -41,940,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -44,003,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Shareholders' equity | 
                                                3,585,973,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,441,818,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | ||
| Valuation difference on available-for-sale securities | 
                                                1,591,713,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,666,487,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                1,591,713,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,666,487,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share acquisition rights | 
                                                24,226,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,090,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-controlling interests | 
                                                935,644,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                882,944,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                6,137,558,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,016,340,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                15,060,945,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,944,091,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |