Notes - Segment Information, Etc.
| Concept | 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 | 2023-04-01 to 2023-09-30 | 2022-04-01 to 2022-09-30 | 2022-04-01 to 2022-09-30 | 2022-04-01 to 2022-09-30 | 2022-04-01 to 2022-09-30 | 2022-04-01 to 2022-09-30 | 2022-04-01 to 2022-09-30 | 2022-04-01 to 2022-09-30 | 2022-04-01 to 2022-09-30 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 
                                                11,884,047,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,884,047,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                293,384,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,421,226,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                6,457,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                162,979,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,721,068,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,348,731,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                9,763,533,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                11,250,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                259,878,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                314,069,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,348,731,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                10,034,661,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
| Transactions with other segments | 
                                                704,157,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -704,157,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                55,352,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                69,736,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                579,069,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                125,088,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                -558,118,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                22,363,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                43,484,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                492,270,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                558,118,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             | 
                                                65,848,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             |