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 | 
                                                123,728,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,050,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,026,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                190,805,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                214,129,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                23,324,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                214,129,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                106,310,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                170,870,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,122,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,386,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                192,992,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                192,992,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                21,174,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                1,543,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,562,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,593,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                31,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,593,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,507,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,513,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,544,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,544,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                0
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||||
| Depreciation | 
                                                1,583,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                717,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                121,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,423,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,593,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                170,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,722,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                128,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,339,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,190,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                176,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                138,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                705,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,505,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,367,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                146,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                7,273,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,409,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                65,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,747,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,460,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                712,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,525,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                64,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,224,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,047,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                131,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                117,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                682,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,295,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,178,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                140,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |