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 | 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 | 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 | 
                                                11,197,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                61,125,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,954,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                154,920,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,015,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,905,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,570,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,152,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                152,768,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                154,920,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,980,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                136,178,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,074,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                58,416,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,672,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                138,253,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,323,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,287,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                138,253,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,497,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                657,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                235,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                131,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,043,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,044,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,044,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                208,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,103,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,104,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                257,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                630,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,104,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||||||||||
| Depreciation | 
                                                335,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                16,389,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                569,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,661,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                380,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                619,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                286,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                78,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,582,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,661,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                516,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,765,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                90,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,929,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                144,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,855,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                246,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                308,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,855,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                619,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                555,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,527,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                489,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,621,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                320,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                614,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                91,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,598,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,621,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                127,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,903,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                49,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,595,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                25,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,952,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                167,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                317,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,952,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                670,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |