Earnings Per Limited Partner Unit (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income (Loss) Allocated to Limited Partners	$ 14.1	$ (63.4)	$ 11.1	$ (126.8)
Net Income (Loss) Available to Common Stockholders, Diluted	$ 14.1	$ (63.4)	$ 11.1	$ (126.8)
Basic (units)	98.0	63.5	92.0	68.4
Dilutive units (units)	4.6	0.0	4.7	0.0
Diluted (units)	102.6	63.5	96.7	68.4
Basic (in dollars per share)	$ 0.14	$ (1.00)	$ 0.12	$ (1.85)
Diluted (in dollars per share)	$ 0.14	$ (1.00)	$ 0.11	$ (1.85)
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
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	0.0	0.1	0.0	0.1
Dilutive units (units)	0.1	0.0	0.2	0.0
Subordinated Units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0.0	0.0	0.0	0.2
Niobrara Preferred Units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Dilutive units (units)	4.5	0.0	4.5	0.0
Crestwood Niobrara LLC | 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	0.0	3.6	0.0	3.6