Segment Information - Assets (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Segment Reporting
Total identifiable assets	$ 8,490.5	$ 8,651.0
Permian
Segment Reporting
Total identifiable assets	2,771.5	2,661.4
Louisiana
Segment Reporting
Total identifiable assets	2,164.0	2,310.7
Oklahoma
Segment Reporting
Total identifiable assets	2,330.3	2,420.4
North Texas
Segment Reporting
Total identifiable assets	1,025.5	1,094.6
Corporate
Segment Reporting
Total identifiable assets	$ 199.2	$ 163.9