Balance Sheet
| Concept | As at 2023-09-30 | As at 2023-03-31 | 
|---|---|---|
| Balance sheet | ||
| Balance sheet | ||
| Assets | ||
| Current assets | 
                                                14,033,998,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,094,831,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Cash and deposits | 
                                                2,674,497,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,358,051,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Inventories | 
                                                6,385,451,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,921,179,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                469,049,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                190,714,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -3,025,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -3,582,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | ||
| Property, plant and equipment | ||
| Land | 
                                                4,101,869,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,825,652,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Property, plant and equipment | 
                                                6,937,419,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,512,954,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other, net | 
                                                555,883,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                488,478,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | — | — | 
| Own-used assets | ||
| Intangible assets | ||
| Intangible assets | 
                                                174,282,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                198,667,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments and other assets | ||
| Investments and other assets | 
                                                2,584,857,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,102,285,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Allowance for doubtful accounts | 
                                                -668,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -821,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current assets | 
                                                9,696,559,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,813,907,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other assets | — | — | 
| Current assets | ||
| Costs on construction contracts in progress | 
                                                16,376,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,069,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Merchandise and finished goods | 
                                                3,872,212,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,570,236,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Work in process | 
                                                919,079,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                895,640,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Raw materials and supplies | 
                                                1,577,783,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,449,232,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other assets | ||
| Assets | 
                                                23,730,557,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,908,738,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities | ||
| Non-current liabilities | ||
| Long-term borrowings | 
                                                2,173,201,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                581,344,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Bonds payable | 
                                                35,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Non-current liabilities | 
                                                3,813,490,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,970,586,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                367,941,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                217,446,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for retirement benefits for directors (and other officers) | 
                                                51,068,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,446,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | 
                                                3,109,426,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,067,501,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Short-term borrowings | 
                                                160,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                280,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Income taxes payable | 
                                                337,324,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                382,224,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other | 
                                                656,421,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                658,061,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current liabilities | ||
| Current portion of bonds payable | 
                                                10,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Current portion of long-term borrowings | 
                                                381,364,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                201,067,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provision for bonuses | 
                                                205,033,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                139,928,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Provisions | ||
| Liabilities | 
                                                6,922,917,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,038,087,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other liabilities | — | — | 
| Other liabilities | — | — | 
| Liabilities and net assets | ||
| Shareholders' equity | 
                                                15,858,532,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,146,264,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share capital | 
                                                768,590,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                768,590,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Capital surplus | 
                                                595,769,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                590,491,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Retained earnings | 
                                                14,988,667,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,298,707,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Treasury shares | 
                                                -494,494,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -511,524,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation and translation adjustments | 
                                                631,169,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                411,382,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Valuation difference on available-for-sale securities | 
                                                130,403,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,328,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Share acquisition rights | 
                                                42,129,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                57,538,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | 
                                                16,807,640,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,870,650,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Liabilities and net assets | 
                                                23,730,557,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,908,738,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Net assets | ||
| Valuation and translation adjustments | ||
| Shareholders' equity | ||
| Capital surplus | ||
| Retained earnings |