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 | 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 | 
                                                21,619,171,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,927,109,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                49,336,406,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,485,795,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,304,329,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,846,930,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,929,256,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                47,862,934,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,865,497,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,221,250,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                2,035,971,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,216,836,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,741,471,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,482,627,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,036,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,172,098,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                914,281,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,823,943,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,131,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,709,431,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||
| Depreciation | 
                                                1,109,153,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                432,715,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,976,853,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                445,004,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                989,980,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                467,452,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                467,559,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,687,056,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                882,680,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                869,363,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                929,224,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                84,632,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,118,291,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                318,985,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                785,449,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                761,565,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                163,539,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,505,445,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                408,416,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,171,925,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |