Notes - Segment Information, Etc.
| Concept | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2024-04-01 to 2024-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 2023-04-01 to 2023-09-30 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                45,869,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,115,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,927,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                59,985,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                63,912,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                63,912,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                46,190,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,465,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                63,113,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                63,113,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,457,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                59,648,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                507,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                140,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,438,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                647,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,085,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -5,085,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                450,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,100,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,689,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -4,689,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                137,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                588,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||
| Depreciation | 
                                                1,370,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                223,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                51,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,594,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,700,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,645,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                54,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,219,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                76,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,545,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,597,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                52,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                248,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,468,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                2,008,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                110,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                329,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,118,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,478,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,447,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                30,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,065,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                63,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,219,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,262,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                42,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                91,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,156,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |