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 | 
                                                62,867,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,984,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                28,947,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                17,710,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                62,867,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,513,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,711,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,625,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,479,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,054,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                64,231,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,987,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                64,231,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,083,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                552,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                477,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,369,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                211,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                122,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,369,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                643,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                178,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -1,420,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                500,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,420,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                93,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||||
| Depreciation | 
                                                1,968,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                235,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,153,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                387,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,968,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                161,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                231,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                130,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                356,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,059,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,186,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,059,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                154,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Investments in entities accounted for using equity method | 
                                                4,198,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,198,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,198,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,467,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,467,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,467,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                2,194,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                296,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,166,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                394,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,194,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                173,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                163,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                306,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                109,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                199,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,388,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                701,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,388,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                70,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |