Notes - Finance Income And Finance Costs
| Concept | 
                                    
                                        2024-01-01 to 2024-03-31  | 
                            
                                
                                    
                                        2023-01-01 to 2023-03-31  | 
                            
                        
|---|---|---|
| Notes - Finance income and finance costs | ||
| Components of finance income and finance costs | ||
| Finance income | ||
| Finance income | 
                                        
                                             
                                                4,011,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                3,487,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             
                                        
                                     | 
                                
                            
| Finance costs | ||
| Finance costs | 
                                        
                                             
                                                4,507,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             
                                        
                                     | 
                                
                                    
                                        
                                             
                                                4,311,000,000
                                                
                                                    
                                                        JPY
                                                    
                                                
                                             
                                        
                                     |