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 | 
                                                19,042,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,914,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,037,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,042,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,030,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,059,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,377,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                989,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,011,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,074,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,301,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,377,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                1,129,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                699,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                53,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                375,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,129,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,200,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                510,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                54,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                634,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,200,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||
| Depreciation | 
                                                843,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                441,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                104,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                844,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                290,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                892,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                286,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                106,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                492,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                892,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                858,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                509,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                164,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,140,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                181,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                282,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,894,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,051,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                216,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                615,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,901,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |