Consolidated Statement Of Income
| Concept | 2023-04-01 to 2023-12-31 | 2023-04-01 to 2023-12-31 | 2023-04-01 to 2023-12-31 | 2023-04-01 to 2023-12-31 | 2023-04-01 to 2023-12-31 | 2022-04-01 to 2022-12-31 | 2022-04-01 to 2022-12-31 | 2022-04-01 to 2022-12-31 | 2022-04-01 to 2022-12-31 | 2022-04-01 to 2022-12-31 | 
|---|---|---|---|---|---|---|---|---|---|---|
| Consolidated statement of income | ||||||||||
| Statement of income | ||||||||||
| Net sales | 
                                                470,397,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,543,322,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,491,892,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,072,925,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -51,430,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,906,852,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,407,300,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,857,007,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                499,552,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -49,844,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Cost of sales | — | — | 
                                                18,037,159,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                19,652,205,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Operating expenses | ||||||||||
| Selling, general and administrative expenses | — | — | 
                                                2,621,267,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                2,684,742,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Operating expenses | ||||||||||
| Net sales | ||||||||||
| Gross profit (loss) | — | — | 
                                                3,454,732,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                3,204,802,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Operating profit (loss) | 
                                                29,774,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                832,735,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                833,465,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                802,960,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                729,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                518,887,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                481,331,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                520,060,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,555,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,172,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Ordinary profit (loss) | — | — | 
                                                885,134,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                534,951,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Selling, general and administrative expenses | ||||||||||
| Extraordinary income | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                26,421,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Non-operating income | — | — | 
                                                59,682,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                55,373,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Dividend income | — | — | 
                                                15,447,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                21,797,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Interest income | — | — | 
                                                2,529,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                4,028,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Non-operating income | ||||||||||
| Other | — | — | 
                                                14,775,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                12,668,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Cost of sales | ||||||||||
| Extraordinary losses | — | — | 
                                                9,822,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                5,592,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Non-operating expenses | ||||||||||
| Interest expenses | — | — | 
                                                7,893,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                4,838,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other | — | — | 
                                                120,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                210,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Non-operating expenses | — | — | 
                                                8,014,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                40,482,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Profit (loss) before income taxes | — | — | 
                                                875,311,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                555,780,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Gross profit | ||||||||||
| Extraordinary income | ||||||||||
| Gain on sale of investment securities | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                26,421,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Income taxes - current | — | — | 
                                                135,617,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                85,240,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Income taxes - deferred | — | — | 
                                                111,955,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                110,005,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Extraordinary losses | ||||||||||
| Loss on retirement of non-current assets | — | — | 
                                                9,822,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                5,592,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Income taxes | — | — | 
                                                247,573,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                195,245,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Profit (loss) | — | — | 
                                                627,738,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                360,534,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Profit (loss) attributable to non-controlling interests | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Profit (loss) attributable to owners of parent | — | — | 
                                                627,738,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                360,534,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other comprehensive income | ||||||||||
| Valuation difference on available-for-sale securities | — | — | 
                                                7,001,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -15,216,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Deferred gains or losses on hedges | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -14,259,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Foreign currency translation adjustment | — | — | 
                                                44,719,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                25,311,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Remeasurements of defined benefit plans, net of tax | — | — | 
                                                -21,065,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -9,819,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other comprehensive income | — | — | 
                                                30,655,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                -13,983,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Profit attributable to | ||||||||||
| Comprehensive income | — | — | 
                                                658,393,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                346,550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Comprehensive income attributable to | ||||||||||
| Comprehensive income attributable to owners of parent | — | — | 
                                                658,393,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                346,550,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Comprehensive income attributable to non-controlling interests | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — |