v3.26.3
Segment Information - Other Financial Information (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Other financial information [Abstract]          
Total assets $ 29,595.8 [1] $ 24,174.8 [1] $ 29,595.8 [1] $ 24,174.8 [1] $ 25,218.4
Goodwill 118.9 45.2 118.9 45.2  
Capital expenditures 1,242.3 861.6 3,355.0 2,372.4  
Gathering and Processing [Member]          
Other financial information [Abstract]          
Goodwill   45.2   45.2  
Capital expenditures       1,447.2  
Operating Segments [Member]          
Other financial information [Abstract]          
Total assets [1] 29,283.7 23,900.1 29,283.7 23,900.1  
Goodwill 118.9 45.2 118.9 45.2  
Capital expenditures 1,238.1 855.9 3,329.8 2,346.6  
Operating Segments [Member] | Gathering and Processing [Member]          
Other financial information [Abstract]          
Total assets [1] 17,680.1 14,214.1 17,680.1 14,214.1  
Goodwill 118.9 45.2 118.9 45.2  
Capital expenditures 786.7 553.0 2,079.6    
Operating Segments [Member] | Logistics and Transportation [Member]          
Other financial information [Abstract]          
Total assets [1] 11,603.6 9,686.0 11,603.6 9,686.0  
Capital expenditures 451.4 302.9 1,250.2 899.4  
Operating Segments [Member] | Other [Member]          
Other financial information [Abstract]          
Total assets [1] 4.1 4.1 4.1 4.1  
Operating Segments [Member] | Corporate and Eliminations [Member]          
Other financial information [Abstract]          
Total assets [1] 308.0 270.6 308.0 270.6  
Capital expenditures $ 4.2 $ 5.7 $ 25.2 $ 25.8  
[1] Assets in the Corporate and Eliminations column primarily include tax-related assets, cash, prepaids and debt issuance costs for our revolving credit facilities.