Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues:
Revenues	$ 6,000.7	$ 4,569.0	$ 2,254.3
Costs of product/services sold (exclusive of items shown separately below):
Product costs - related party (Note 19)	240.9	136.8	21.0
Total costs of products/services sold	4,997.1	3,843.9	1,600.5
Operating expenses and other:
Operations and maintenance	196.1	121.0	131.8
General and administrative	130.4	97.6	91.5
Depreciation, amortization and accretion	328.9	244.2	237.4
Loss on long-lived assets, net	187.7	39.6	26.0
Gain on acquisition	(75.3)	0.0	0.0
Goodwill impairment	0.0	0.0	80.3
Total expenses	767.8	502.4	567.0
Operating income	235.8	222.7	86.8
Earnings (loss) from unconsolidated affiliates, net	15.7	(120.4)	32.5
Interest and debt expense, net	(177.4)	(132.1)	(133.6)
Gain (loss) on modification/extinguishment of debt	0.0	(7.5)	0.1
Other income (expense), net	0.3	0.1	(0.7)
Income (loss) before income taxes	74.4	(37.2)	(14.9)
Provision for income taxes	(1.9)	(0.2)	(0.4)
Net income (loss)	72.5	(37.4)	(15.3)
Net income attributable to non-controlling partner	41.2	41.1	40.8
Net income (loss) attributable to parent	31.3	(78.5)	(56.1)
Net income attributable to preferred units	60.1	60.1	60.1
Net loss attributable to partners	$ (28.8)	$ (138.6)	$ (116.2)
Net loss per limited partner unit: (Note 14)
Basic (dollars per unit)	$ (0.29)	$ (2.11)	$ (1.59)
Diluted (dollars per unit)	$ (0.29)	$ (2.11)	$ (1.59)
Weighted-average limited partners’ units outstanding:
Basic (units)	99.0	65.6	73.2
Diluted (units)	99.0	65.6	73.2
CMLP
Revenues:
Revenues	$ 6,000.7	$ 4,569.0	$ 2,254.3
Costs of product/services sold (exclusive of items shown separately below):
Product costs - related party (Note 19)	240.9	136.8	21.0
Total costs of products/services sold	4,997.1	3,843.9	1,600.5
Operating expenses and other:
Operations and maintenance	196.1	121.0	131.8
General and administrative	124.4	90.2	86.7
Depreciation, amortization and accretion	334.6	258.4	251.5
Loss on long-lived assets, net	312.7	39.4	26.0
Gain on acquisition	(75.3)	0.0	0.0
Goodwill impairment	0.0	0.0	80.3
Total expenses	892.5	509.0	576.3
Operating income	111.1	216.1	77.5
Earnings (loss) from unconsolidated affiliates, net	15.7	(120.4)	32.5
Interest and debt expense, net	(177.4)	(132.1)	(133.6)
Gain (loss) on modification/extinguishment of debt	0.0	(7.5)	0.1
Other income (expense), net	0.1	0.0	0.0
Income (loss) before income taxes	(50.5)	(43.9)	(23.5)
Provision for income taxes	(1.7)	(0.1)	0.1
Net income (loss)	(52.2)	(44.0)	(23.4)
Net income attributable to non-controlling partner	41.2	41.1	40.8
Net income (loss) attributable to parent	(93.4)	(85.1)	(64.2)
Product
Revenues:
Revenues	5,198.4	4,145.4	1,793.0
Costs of product/services sold (exclusive of items shown separately below):
Product and service costs	4,730.4	3,688.8	1,558.8
Product | CMLP
Revenues:
Revenues	5,198.4	4,145.4	1,793.0
Costs of product/services sold (exclusive of items shown separately below):
Product and service costs	4,730.4	3,688.8	1,558.8
Product, Related Party
Revenues:
Revenues	222.6	25.8	27.3
Product, Related Party | CMLP
Revenues:
Revenues	222.6	25.8	27.3
Service
Revenues:
Revenues	430.4	396.4	433.5
Costs of product/services sold (exclusive of items shown separately below):
Product and service costs	25.8	18.3	20.7
Service | CMLP
Revenues:
Revenues	430.4	396.4	433.5
Costs of product/services sold (exclusive of items shown separately below):
Product and service costs	25.8	18.3	20.7
Service, Related Party
Revenues:
Revenues	149.3	1.4	0.5
Service, Related Party | CMLP
Revenues:
Revenues	$ 149.3	$ 1.4	$ 0.5