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Revenues (Disaggregation of Revenue) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Disaggregation of Revenue [Line Items]        
Revenues $ 1,566.0 $ 1,226.3 $ 4,597.8 $ 3,188.6
Natural Gas Gathering        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 43.5 35.3 149.2 100.0
Crude Oil Gathering        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 16.4 17.1 48.2 56.2
Water Gathering        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 49.3 24.8 130.7 69.5
Natural Gas Processing        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 25.5 7.2 61.9 21.5
Natural Gas Compression        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 4.7 3.7 11.3 12.1
Crude Oil Storage        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.7 0.1 1.9 0.4
NGL Storage        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 2.2 2.6 6.9 8.7
Crude Oil Pipeline        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.6 0.6 1.5 2.0
Crude Oil Transportation        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 1.6 0.7 4.6 1.8
NGL Transportation        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 5.0 4.1 16.3 12.5
Crude Oil Rail Loading        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax   1.2 0.4 3.4
Natural Gas Product Sales        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 296.8 84.7 591.2 225.2
Crude Oil Product Sales        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 473.9 411.6 1,491.3 1,161.5
NGL Product Sales        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 557.3 501.6 1,676.6 1,212.7
Other revenue        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.5 0.5 1.4 1.4
Water Product Sales        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 2.1   5.0  
NGL Pipeline        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.1   0.2 0.1
Intersegment Eliminations        
Disaggregation of Revenue [Line Items]        
Revenues (280.0) (125.6) (559.0) (315.1)
Intersegment Eliminations | Natural Gas Gathering        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 0.0 0.0 0.0
Intersegment Eliminations | Crude Oil Gathering        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 0.0 0.0 0.0
Intersegment Eliminations | Water Gathering        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 0.0 0.0 0.0
Intersegment Eliminations | Natural Gas Processing        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 0.0 0.0 0.0
Intersegment Eliminations | Natural Gas Compression        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 0.0 0.0 0.0
Intersegment Eliminations | Crude Oil Storage        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 (0.1) (0.2) (0.3)
Intersegment Eliminations | NGL Storage        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 0.0 0.0 0.0
Intersegment Eliminations | Crude Oil Pipeline        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 0.0 0.0 0.0
Intersegment Eliminations | Crude Oil Transportation        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 (0.1) (0.1) (0.1)
Intersegment Eliminations | NGL Transportation        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 0.0 0.0 0.0
Intersegment Eliminations | Crude Oil Rail Loading        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax   0.0 0.0 0.0
Intersegment Eliminations | Natural Gas Product Sales        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax (205.6) (42.7) (331.2) (111.7)
Intersegment Eliminations | Crude Oil Product Sales        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax (9.8) (25.1) (33.9) (62.5)
Intersegment Eliminations | NGL Product Sales        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax (58.9) (57.6) (187.9) (140.5)
Intersegment Eliminations | Other revenue        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax (0.5) 0.0 (0.5) 0.0
Intersegment Eliminations | Water Product Sales        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0   0.0  
Intersegment Eliminations | NGL Pipeline        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax (5.2)   (5.2) 0.0
Operating Segments | Gathering and Processing North        
Disaggregation of Revenue [Line Items]        
Revenues 414.8 270.1 1,208.4 738.0
Operating Segments | Gathering and Processing South        
Disaggregation of Revenue [Line Items]        
Revenues 315.2 26.7 381.2 76.0
Operating Segments | Storage and Logistics        
Disaggregation of Revenue [Line Items]        
Revenues 1,116.0 1,055.1 3,567.2 2,689.7
Operating Segments | Natural Gas Gathering | Gathering and Processing North        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 33.4 13.7 92.2 40.5
Operating Segments | Natural Gas Gathering | Gathering and Processing South        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 10.1 21.6 57.0 59.5
Operating Segments | Natural Gas Gathering | Storage and Logistics        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 0.0 0.0 0.0
Operating Segments | Crude Oil Gathering | Gathering and Processing North        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 14.7 17.1 43.6 56.2
Operating Segments | Crude Oil Gathering | Gathering and Processing South        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 1.7 0.0 4.6 0.0
Operating Segments | Crude Oil Gathering | Storage and Logistics        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 0.0 0.0 0.0
Operating Segments | Water Gathering | Gathering and Processing North        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 41.8 24.8 117.7 69.5
Operating Segments | Water Gathering | Gathering and Processing South        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 7.5 0.0 13.0 0.0
Operating Segments | Water Gathering | Storage and Logistics        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 0.0 0.0 0.0
Operating Segments | Natural Gas Processing | Gathering and Processing North        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 20.7 5.8 54.8 17.7
Operating Segments | Natural Gas Processing | Gathering and Processing South        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 4.8 1.4 7.1 3.8
Operating Segments | Natural Gas Processing | Storage and Logistics        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 0.0 0.0 0.0
Operating Segments | Natural Gas Compression | Gathering and Processing North        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 0.0 0.0 0.0
Operating Segments | Natural Gas Compression | Gathering and Processing South        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 4.7 3.7 11.3 12.1
Operating Segments | Natural Gas Compression | Storage and Logistics        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 0.0 0.0 0.0
Operating Segments | Crude Oil Storage | Gathering and Processing North        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.6 0.1 1.7 0.3
Operating Segments | Crude Oil Storage | Gathering and Processing South        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 0.0 0.0 0.0
Operating Segments | Crude Oil Storage | Storage and Logistics        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.1 0.1 0.4 0.4
Operating Segments | NGL Storage | Gathering and Processing North        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 0.0 0.0 0.0
Operating Segments | NGL Storage | Gathering and Processing South        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 0.0 0.0 0.0
Operating Segments | NGL Storage | Storage and Logistics        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 2.2 2.6 6.9 8.7
Operating Segments | Crude Oil Pipeline | Gathering and Processing North        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 0.0 0.0 0.0
Operating Segments | Crude Oil Pipeline | Gathering and Processing South        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 0.0 0.0 0.0
Operating Segments | Crude Oil Pipeline | Storage and Logistics        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.6 0.6 1.5 2.0
Operating Segments | Crude Oil Transportation | Gathering and Processing North        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 1.5 0.8 4.2 1.9
Operating Segments | Crude Oil Transportation | Gathering and Processing South        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.1 0.0 0.5 0.0
Operating Segments | Crude Oil Transportation | Storage and Logistics        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 0.0 0.0 0.0
Operating Segments | NGL Transportation | Gathering and Processing North        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 0.0 0.0 0.0
Operating Segments | NGL Transportation | Gathering and Processing South        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 0.0 0.0 0.0
Operating Segments | NGL Transportation | Storage and Logistics        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 5.0 4.1 16.3 12.5
Operating Segments | Crude Oil Rail Loading | Gathering and Processing North        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax   0.0 0.0 0.0
Operating Segments | Crude Oil Rail Loading | Gathering and Processing South        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax   0.0 0.0 0.0
Operating Segments | Crude Oil Rail Loading | Storage and Logistics        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax   1.2 0.4 3.4
Operating Segments | Natural Gas Product Sales | Gathering and Processing North        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 109.6 42.9 269.1 111.9
Operating Segments | Natural Gas Product Sales | Gathering and Processing South        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 144.4 0.0 145.3 0.6
Operating Segments | Natural Gas Product Sales | Storage and Logistics        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 248.4 84.5 508.0 224.4
Operating Segments | Crude Oil Product Sales | Gathering and Processing North        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 120.9 105.4 394.9 297.1
Operating Segments | Crude Oil Product Sales | Gathering and Processing South        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 0.0 0.0 0.0
Operating Segments | Crude Oil Product Sales | Storage and Logistics        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 362.8 331.3 1,130.3 926.9
Operating Segments | NGL Product Sales | Gathering and Processing North        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 68.3 59.1 222.7 142.3
Operating Segments | NGL Product Sales | Gathering and Processing South        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 136.2 0.0 136.2 0.0
Operating Segments | NGL Product Sales | Storage and Logistics        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 411.7 500.1 1,505.6 1,210.9
Operating Segments | Other revenue | Gathering and Processing North        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.8 0.0 1.4 0.0
Operating Segments | Other revenue | Gathering and Processing South        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 0.0 0.0 0.0
Operating Segments | Other revenue | Storage and Logistics        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.2 0.5 0.5 1.4
Operating Segments | Water Product Sales | Gathering and Processing North        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 2.1   5.0  
Operating Segments | Water Product Sales | Gathering and Processing South        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0   0.0  
Operating Segments | Water Product Sales | Storage and Logistics        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0   0.0  
Operating Segments | NGL Pipeline | Gathering and Processing North        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.0   0.0 0.0
Operating Segments | NGL Pipeline | Gathering and Processing South        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 5.2   5.2 0.0
Operating Segments | NGL Pipeline | Storage and Logistics        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 0.1   0.2 0.1
Revenue from Contract with Customer        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 1,480.2 1,095.8 4,198.6 2,889.0
Revenue from Contract with Customer | Intersegment Eliminations        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax (280.0) (125.6) (559.0) (315.1)
Revenue from Contract with Customer | Operating Segments | Gathering and Processing North        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 414.4 269.7 1,207.3 737.4
Revenue from Contract with Customer | Operating Segments | Gathering and Processing South        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 314.7 26.7 380.2 76.0
Revenue from Contract with Customer | Operating Segments | Storage and Logistics        
Disaggregation of Revenue [Line Items]        
Revenue from Contract with Customer, Excluding Assessed Tax 1,031.1 925.0 3,170.1 2,390.7
Product and Service, Other        
Disaggregation of Revenue [Line Items]        
Non-Topic 606 revenues 85.8 130.5 399.2 299.6
Product and Service, Other | Intersegment Eliminations        
Disaggregation of Revenue [Line Items]        
Non-Topic 606 revenues 0.0 0.0 0.0 0.0
Product and Service, Other | Operating Segments | Gathering and Processing North        
Disaggregation of Revenue [Line Items]        
Non-Topic 606 revenues 0.4 0.4 1.1 0.6
Product and Service, Other | Operating Segments | Gathering and Processing South        
Disaggregation of Revenue [Line Items]        
Non-Topic 606 revenues 0.5 0.0 1.0 0.0
Product and Service, Other | Operating Segments | Storage and Logistics        
Disaggregation of Revenue [Line Items]        
Non-Topic 606 revenues $ 84.9 $ 130.1 $ 397.1 $ 299.0