Earnings Per Limited Partner Unit (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income (Loss) Allocated to Limited Partners	$ (35.1)	$ (68.3)	$ 107.9	$ (57.2)
Net Income (Loss) Available to Common Stockholders, Diluted	$ (35.1)	$ (68.3)	$ 107.9	$ (57.2)
Basic (units)	105.2	107.1	105.2	97.1
Dilutive units (units)	0.0	0.0	3.9	0.0
Diluted (units)	105.2	107.1	109.1	97.1
Basic (in dollars per share)	$ (0.33)	$ (0.64)	$ 1.03	$ (0.59)
Diluted (in dollars per share)	$ (0.33)	$ (0.64)	$ 0.99	$ (0.59)
Preferred Units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	7.1	7.1	7.1	7.1
Niobrara Preferred Units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Dilutive units (units)	0.0	0.0	3.8	0.0
Performance Shares
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0.1	0.1	0.0	0.2
Dilutive units (units)	0.0	0.0	0.1	0.0
Crestwood Niobrara LLC | Niobrara Preferred Units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	3.8	3.9	0.0	3.9