v3.25.2
Segment Information - Other Financial Information (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Other financial information [Abstract]          
Total assets $ 23,512.8 [1] $ 21,264.2 [1] $ 23,512.8 [1] $ 21,264.2 [1] $ 22,734.1
Goodwill 45.2 45.2 45.2 45.2  
Capital expenditures 892.5 846.7 1,510.8 1,576.4  
Other [Member]          
Other financial information [Abstract]          
Total assets [1] 0.1 0.5 0.1 0.5  
Operating Segments [Member]          
Other financial information [Abstract]          
Total assets [1] 23,270.9 21,073.7 23,270.9 21,073.7  
Goodwill 45.2 45.2 45.2 45.2  
Capital expenditures 882.8 847.7 1,490.7 1,576.3  
Operating Segments [Member] | Gathering and Processing [Member]          
Other financial information [Abstract]          
Total assets [1] 13,937.9 12,956.0 13,937.9 12,956.0  
Goodwill 45.2 45.2 45.2 45.2  
Capital expenditures 461.0 438.9 894.2 873.9  
Operating Segments [Member] | Logistics and Transportation [Member]          
Other financial information [Abstract]          
Total assets [1] (9,333.0) 8,117.7 (9,333.0) 8,117.7  
Capital expenditures 421.8 408.8 596.5 702.4  
Operating Segments [Member] | Other [Member]          
Other financial information [Abstract]          
Total assets [1] 0.1 0.5 0.1 0.5  
Operating Segments [Member] | Corporate and Eliminations [Member]          
Other financial information [Abstract]          
Total assets [1] 241.8 190.0 241.8 190.0  
Capital expenditures $ 9.7 $ (1.0) $ 20.1 $ 0.1  
[1] Assets in the Corporate and Eliminations column primarily include tax-related assets, cash, margin deposit, prepaids, property, plant and equipment and debt issuance costs for our revolving credit facility.