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 | 
                                                37,316,487,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                32,067,147,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,249,339,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,286,637,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                37,316,487,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,763,646,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,768,460,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,734,706,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,004,814,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,768,460,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Cost of sales | — | — | — | 
                                                28,233,954,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                26,613,584,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Operating expenses | ||||||||||
| Selling, general and administrative expenses | — | — | — | 
                                                4,805,690,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                4,849,154,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Operating expenses | ||||||||||
| Operating profit (loss) | 
                                                4,615,286,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,529,482,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,085,803,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,246,991,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,615,286,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,763,106,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,651,193,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,271,967,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                888,086,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,651,193,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Gross profit (loss) | — | — | — | 
                                                9,052,682,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                9,121,122,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Ordinary profit (loss) | — | — | — | 
                                                4,271,970,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                4,325,436,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Net sales | ||||||||||
| Cost of sales | ||||||||||
| Selling, general and administrative expenses | ||||||||||
| Non-operating income | ||||||||||
| Other | — | — | — | 
                                                9,103,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                10,689,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Non-operating income | — | — | — | 
                                                29,919,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                55,227,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Extraordinary income | — | — | — | 
                                                53,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                572,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Extraordinary losses | — | — | — | 
                                                11,676,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                66,721,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Impairment losses | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                59,785,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Non-operating expenses | ||||||||||
| Other | — | — | — | 
                                                4,941,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                1,759,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Non-operating expenses | — | — | — | 
                                                4,941,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                1,759,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Profit (loss) before income taxes | — | — | — | 
                                                4,260,347,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                4,259,287,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Gross profit | ||||||||||
| Extraordinary income | ||||||||||
| Gain on sale of non-current assets | — | — | — | 
                                                53,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                572,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Income taxes - current | — | — | — | 
                                                1,391,966,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                1,438,437,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Extraordinary losses | ||||||||||
| Loss on sale of non-current assets | — | — | — | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                5,720,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Loss on retirement of non-current assets | — | — | — | 
                                                11,676,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                1,215,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Income taxes - deferred | — | — | — | 
                                                76,728,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                82,211,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Income taxes | — | — | — | 
                                                1,468,695,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                1,520,649,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Profit (loss) | — | — | — | 
                                                2,791,652,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                2,738,637,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Profit (loss) attributable to non-controlling interests | — | — | — | 
                                                188,027,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                173,853,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Profit (loss) attributable to owners of parent | — | — | — | 
                                                2,603,624,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                2,564,783,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Profit attributable to | ||||||||||
| Other comprehensive income | ||||||||||
| Valuation difference on available-for-sale securities | — | — | — | 
                                                8,301,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                4,587,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Foreign currency translation adjustment | — | — | — | 
                                                68,993,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                75,617,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Remeasurements of defined benefit plans, net of tax | — | — | — | 
                                                3,622,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                20,309,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other comprehensive income | — | — | — | 
                                                80,918,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                100,514,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Comprehensive income | — | — | — | 
                                                2,872,570,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                2,839,151,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Comprehensive income attributable to | ||||||||||
| Comprehensive income attributable to owners of parent | — | — | — | 
                                                2,684,690,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                2,664,382,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Comprehensive income attributable to non-controlling interests | — | — | — | 
                                                187,879,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                174,769,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — |