Segment Information - Other Financial Information (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Other financial information [Abstract]
Total assets		$ 20,846.1		$ 20,671.8
Operating Segments [Member]
Other financial information [Abstract]
Total assets	[1]	20,846.1	$ 19,025.5
Goodwill		45.2	45.2
Capital expenditures		729.7	454.3
Operating Segments [Member] | Gathering and Processing [Member]
Other financial information [Abstract]
Total assets	[1]	12,815.6	12,199.9
Goodwill		45.2	45.2
Capital expenditures		435.0	269.5
Operating Segments [Member] | Logistics and Transportation [Member]
Other financial information [Abstract]
Total assets	[1]	7,870.1	6,558.4
Capital expenditures		293.6	176.6
Operating Segments [Member] | Other [Member]
Other financial information [Abstract]
Total assets	[1]	3.1	4.2
Operating Segments [Member] | Corporate and Eliminations [Member]
Other financial information [Abstract]
Total assets	[1]	157.3	263.0
Capital expenditures		$ 1.1	$ 8.2

[1] Assets in the Corporate and Eliminations column primarily include tax-related assets, cash, prepaids and debt issuance costs for our revolving credit facility.