Segment Information - Other Financial Information (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022		Dec. 31, 2022
Other financial information [Abstract]
Total assets		$ 19,025.5			$ 19,560.0
Operating Segments [Member]
Other financial information [Abstract]
Total assets	[1]	19,025.5	$ 15,295.4
Goodwill		45.2	45.2
Capital expenditures		454.3	162.5
Operating Segments [Member] | Gathering and Processing [Member]
Other financial information [Abstract]
Total assets	[1]	12,199.9	7,932.2
Goodwill		45.2	45.2
Capital expenditures		269.5	133.0
Operating Segments [Member] | Logistics and Transportation [Member]
Other financial information [Abstract]
Total assets	[1]	6,558.4	7,214.8
Capital expenditures		176.6	25.2
Operating Segments [Member] | Other [Member]
Other financial information [Abstract]
Total assets		4.2	1.6	[1]
Operating Segments [Member] | Corporate and Eliminations [Member]
Other financial information [Abstract]
Total assets	[1]	263.0	146.8
Capital expenditures		$ 8.2	$ 4.3

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