Notes - Segment Information, Etc.
| Concept | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2024-04-01 to 2025-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Notes - Segment information, etc. | |||||||||||||
| Segment information | |||||||||||||
| Disclosure of sales, profit (loss), asset, liability, and other items for each reportable segment | |||||||||||||
| Sales | |||||||||||||
| Revenues from external customers | 
                                                10,837,189,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,801,151,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,195,422,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,837,189,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,840,615,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                994,033,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,022,357,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,045,586,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,029,195,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,045,586,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,958,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,958,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -21,958,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -22,055,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,055,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,055,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | |||||||||||||
| Depreciation | 
                                                258,300,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                175,192,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,455,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                247,917,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                70,269,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,382,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,850,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                158,946,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                247,236,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,607,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                73,831,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                235,629,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Equity in earnings (losses) of affiliates | 
                                                504,975,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                504,975,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                504,975,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,498,420,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,498,420,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,498,420,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments in entities accounted for using equity method | 
                                                22,243,678,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,243,678,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,243,678,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                319,213,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                238,213,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                274,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                294,056,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                55,569,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,156,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,247,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                84,015,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                159,808,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,990,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                70,554,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                156,817,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |