Disclosure Of Sustainability-Related Financial Information
| Concept | 2023-01-01 to 2023-12-31 | 2022-01-01 to 2022-12-31 | 2021-01-01 to 2021-12-31 | 2019-01-01 to 2019-12-31 | 
|---|---|---|---|---|
| Disclosure of Sustainability-related Financial Information | ||||
| Scope 1 and 2 greenhouse gas emissions | ||||
| Gross scope 1 greenhouse gas emissions | 
                                                588,000
                                                
                                                    
                                                        utr:tCO2e
                                                    
                                                
                                             | 
                                                648,000
                                                
                                                    
                                                        utr:tCO2e
                                                    
                                                
                                             | 
                                                699,000
                                                
                                                    
                                                        utr:tCO2e
                                                    
                                                
                                             | 
                                                656,000
                                                
                                                    
                                                        utr:tCO2e
                                                    
                                                
                                             | 
| Gross scope 2 greenhouse gas emissions | 
                                                494,000
                                                
                                                    
                                                        utr:tCO2e
                                                    
                                                
                                             | 
                                                593,000
                                                
                                                    
                                                        utr:tCO2e
                                                    
                                                
                                             | 
                                                601,000
                                                
                                                    
                                                        utr:tCO2e
                                                    
                                                
                                             | 
                                                614,000
                                                
                                                    
                                                        utr:tCO2e
                                                    
                                                
                                             | 
| Gross scope 1 and 2 greenhouse gas emissions | 
                                                1,082,000
                                                
                                                    
                                                        utr:tCO2e
                                                    
                                                
                                             | 
                                                1,241,000
                                                
                                                    
                                                        utr:tCO2e
                                                    
                                                
                                             | 
                                                1,300,000
                                                
                                                    
                                                        utr:tCO2e
                                                    
                                                
                                             | 
                                                1,270,000
                                                
                                                    
                                                        utr:tCO2e
                                                    
                                                
                                             |