Disclosure Of Sustainability-Related Financial Information
| Concept | 2023-04-01 to 2024-03-31 | 2022-04-01 to 2023-03-31 | 2021-04-01 to 2022-03-31 | 2020-04-01 to 2021-03-31 | 
|---|---|---|---|---|
| Disclosure of Sustainability-related Financial Information | ||||
| Scope 1 and 2 greenhouse gas emissions | ||||
| Gross scope 1 greenhouse gas emissions | 
                                                658.3
                                                
                                                    
                                                        utr:tCO2e
                                                    
                                                
                                             | 
                                                645.4
                                                
                                                    
                                                        utr:tCO2e
                                                    
                                                
                                             | 
                                                676.4
                                                
                                                    
                                                        utr:tCO2e
                                                    
                                                
                                             | 
                                                663.6
                                                
                                                    
                                                        utr:tCO2e
                                                    
                                                
                                             | 
| Gross scope 2 greenhouse gas emissions | 
                                                369.6
                                                
                                                    
                                                        utr:tCO2e
                                                    
                                                
                                             | 
                                                473.4
                                                
                                                    
                                                        utr:tCO2e
                                                    
                                                
                                             | 
                                                449.5
                                                
                                                    
                                                        utr:tCO2e
                                                    
                                                
                                             | 
                                                481.8
                                                
                                                    
                                                        utr:tCO2e
                                                    
                                                
                                             | 
| Gross scope 1 and 2 greenhouse gas emissions | 
                                                1,027.9
                                                
                                                    
                                                        utr:tCO2e
                                                    
                                                
                                             | 
                                                1,118.8
                                                
                                                    
                                                        utr:tCO2e
                                                    
                                                
                                             | 
                                                1,125.9
                                                
                                                    
                                                        utr:tCO2e
                                                    
                                                
                                             | 
                                                1,145.4
                                                
                                                    
                                                        utr:tCO2e
                                                    
                                                
                                             |