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 | 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 | 
                                                99,853,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                128,022,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                136,301,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,278,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                136,301,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,168,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,073,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                121,412,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                94,339,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,423,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                128,835,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                128,835,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                1,038,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,313,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,169,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,855,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                275,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -11,169,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                275,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,210,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                934,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,882,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -9,092,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,092,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||
| Depreciation | 
                                                2,824,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,248,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,355,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                107,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,460,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                424,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                105,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                473,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,021,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,548,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                148,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                105,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,275,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,170,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                3,889,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,123,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,976,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                853,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,059,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                233,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                82,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                202,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,980,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,777,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                144,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                130,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,255,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,125,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |