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 | 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 | 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 | 
                                                160,032,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                186,465,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,289,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                194,673,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,208,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -27,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                194,646,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,143,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                173,913,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,170,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,349,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,488,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -343,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                182,401,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                182,058,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                148,394,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                802,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,201,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                368,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,572,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,370,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -12,572,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,061,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                48,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                379,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,500,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -11,562,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,562,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                633,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||||
| Depreciation | 
                                                6,684,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,876,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                176,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,058,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                182,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -37,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,021,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,926,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                206,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                178,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -24,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,105,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,081,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,699,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                3,472,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,700,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                192,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,965,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                265,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,977,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                34,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,847,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                41,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                184,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                208,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                68,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,056,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,124,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,621,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |