Notes - Segment Information, Etc.
| Concept | 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 | 2023-04-01 to 2024-03-31 | 2023-04-01 to 2024-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 2022-04-01 to 2023-03-31 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                279,581,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,190,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,298,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                75,561,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                40,659,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                77,111,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                83,058,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                287,880,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                287,880,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,195,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                75,136,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,544,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                38,105,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                59,132,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                87,464,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                272,578,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                263,034,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                272,578,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                8,427,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                38,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,374,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,926,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,644,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                607,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -14,801,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,211,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                14,801,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                35,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,996,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,073,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,604,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,338,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,927,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                15,975,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,902,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -15,975,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Other items | ||||||||||||||||||||
| Depreciation | 
                                                7,759,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                580,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                259,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,784,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                374,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,828,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,278,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,190,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,296,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,018,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                676,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,795,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                283,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                375,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,921,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,152,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                8,205,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,921,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,176,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,382,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Increase in property, plant and equipment and intangible assets | 
                                                7,020,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                96,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                320,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,991,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                292,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                3,546,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,640,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,093,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,981,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                7,340,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                33,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                4,887,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                156,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                349,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,488,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                1,536,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,452,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,295,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                2,894,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                12,347,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |