Quarter Period 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 | 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 | 
|---|---|---|---|---|---|---|---|---|
| Quarter period consolidated statement of income | ||||||||
| Statement of income | ||||||||
| Selling, general and administrative expenses | ||||||||
| Selling, general and administrative expenses | — | 
                                                677,281,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                638,848,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Operating profit (loss) | — | 
                                                982,074,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                1,001,185,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Non-operating income | ||||||||
| Interest income | — | 
                                                91,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                125,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Dividend income | — | 
                                                156,259,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                149,754,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Share of profit of entities accounted for using equity method | — | 
                                                324,641,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                184,967,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Non-operating income | — | 
                                                531,673,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                488,494,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Non-operating expenses | ||||||||
| Interest expenses | — | 
                                                36,383,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                26,781,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Non-operating expenses | — | 
                                                43,578,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                49,079,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Ordinary profit (loss) | 
                                                1,473,933,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,470,169,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,262,158,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                211,775,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,528,710,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,440,600,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,333,996,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                194,713,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Extraordinary income | ||||||||
| Gain on sale of non-current assets | — | 
                                                15,623,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                16,036,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Extraordinary income | — | 
                                                66,738,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                16,036,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Extraordinary losses | ||||||||
| Extraordinary losses | — | 
                                                16,689,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                2,612,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Profit (loss) before income taxes | — | 
                                                1,520,217,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                1,454,024,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Income taxes - current | — | 
                                                222,438,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                285,055,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Income taxes - deferred | — | 
                                                136,849,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                134,087,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Income taxes | — | 
                                                359,288,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                419,142,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Profit (loss) | — | 
                                                1,160,929,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                1,034,882,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Profit attributable to | ||||||||
| Profit (loss) attributable to owners of parent | — | 
                                                1,160,929,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                1,034,882,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other comprehensive income | ||||||||
| Valuation difference on available-for-sale securities | — | 
                                                349,023,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                164,692,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Remeasurements of defined benefit plans, net of tax | — | 
                                                518,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                20,384,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Other comprehensive income | — | 
                                                349,542,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                185,077,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Comprehensive income | — | 
                                                1,510,471,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                1,219,959,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | 
| Comprehensive income attributable to | ||||||||
| Comprehensive income attributable to owners of parent | — | 
                                                1,510,471,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — | — | 
                                                1,219,959,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | — | — |