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 | 
                                                578,853,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                606,791,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,937,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                283,289,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                606,791,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                295,564,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                536,869,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                252,611,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                26,677,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                284,258,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                563,547,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                563,547,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                7,548,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,091,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,543,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,711,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,836,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -10,091,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,832,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,841,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,856,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -8,688,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,990,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,688,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||
| Depreciation | 
                                                18,255,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,604,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,349,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,496,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,604,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,758,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                18,271,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,455,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,296,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,815,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,567,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,567,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                33,177,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,470,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,292,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,496,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,470,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                27,681,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                19,063,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                5,810,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,525,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                13,252,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,589,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                20,589,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |