Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenues:
Gathering and processing	$ 1,051.2	$ 1,831.5	$ 273.6
Marketing, supply and logistics	857.5	1,339.4	714.9
Total product revenue	1,908.7	3,170.9	988.5
Gathering and processing	325.9	332.2	161.5
Storage and transportation	266.3	264.6	130.9
Marketing, supply and logistics	128.0	160.6	70.9
Related party (Note 16)	3.9	3.0	74.9
Total services revenues	724.1	760.4	438.2
Total revenue	2,632.8	3,931.3	1,426.7
Costs of product/services sold (exclusive of items shown separately below):
Gathering and processing	1,074.4	1,816.9	234.5
Marketing, supply and logistics	705.6	1,196.1	681.7
Related party (Note 16)	28.9	42.2	32.5
Total product costs	1,808.9	3,055.2	948.7
Gathering and processing	0.6	0.8	0.4
Storage and transportation	20.1	33.3	19.7
Marketing, supply and logistics	53.9	76.0	33.5
Total service costs	74.6	110.1	53.6
Total costs of products/services sold	1,883.5	3,165.3	1,002.3
Expenses:
Operations and maintenance	190.2	203.3	104.6
General and administrative	116.3	100.2	93.5
Depreciation, amortization and accretion	300.1	285.3	167.9
Total expenses	606.6	588.8	366.0
Gain (loss) on long-lived assets, net	(821.2)	(1.9)	5.3
Goodwill impairment	(1,406.3)	(48.8)	(4.1)
Loss on contingent consideration (Note 15)	0.0	(8.6)	(31.4)
Operating income (loss)	(2,084.8)	117.9	28.2
Loss from unconsolidated affiliates, net	(60.8)	(0.7)	(0.1)
Interest and debt expense, net	(140.1)	(127.1)	(77.9)
Loss on modification/extinguishment of debt	(20.0)	0.0	0.0
Other income, net	0.6	0.6	0.2
Loss before income taxes	(2,305.1)	(9.3)	(49.6)
Provision (benefit) for income taxes	(1.4)	1.1	1.0
Net loss	(2,303.7)	(10.4)	(50.6)
Net loss attributable to non-controlling partners	636.8	66.8	57.3
Net income (loss) attributable to parent	(1,666.9)	56.4	6.7
Net income attributable to preferred units	(6.2)	0.0	0.0
Net income (loss) attributable to partners	(1,673.1)	56.4	6.7
Subordinated unitholders' interest in net income	0.0	1.3	0.3
Common unitholders' interest in net income (loss)	$ (1,673.1)	$ 55.1	$ 6.4
Net income (loss) per limited partner unit:
Basic (dollars per unit)	$ (54.00)	$ 3.03	$ 0.59
Diluted (dollars per unit)	$ (54.00)	$ 3.03	$ 0.59
Weighted-average limited partners’ units outstanding (in thousands):
Basic (units)	30,983	18,201	10,914
Dilutive units (units)	0	439	439
Diluted (units)	30,983	18,640	11,353
CMLP
Revenues:
Gathering and processing	$ 1,051.2	$ 1,831.5	$ 273.6
Marketing, supply and logistics	857.5	1,339.4	714.9
Total product revenue	1,908.7	3,170.9	988.5
Gathering and processing	325.9	332.2	161.5
Storage and transportation	266.3	250.8	116.8
Marketing, supply and logistics	128.0	160.6	70.9
Related party (Note 16)	3.9	3.0	74.9
Total services revenues	724.1	746.6	424.1
Total revenue	2,632.8	3,917.5	1,412.6
Costs of product/services sold (exclusive of items shown separately below):
Gathering and processing	1,074.4	1,816.9	234.5
Marketing, supply and logistics	705.6	1,196.1	681.7
Related party (Note 16)	28.9	42.2	32.5
Total product costs	1,808.9	3,055.2	948.7
Gathering and processing	0.6	0.8	0.4
Storage and transportation	20.1	22.8	12.8
Marketing, supply and logistics	53.9	76.0	33.5
Total service costs	74.6	99.6	46.7
Total costs of products/services sold	1,883.5	3,154.8	995.4
Expenses:
Operations and maintenance	188.7	195.4	103.4
General and administrative	105.6	91.7	84.1
Depreciation, amortization and accretion	278.5	255.4	139.4
Total expenses	572.8	542.5	326.9
Gain (loss) on long-lived assets, net	(227.8)	(35.1)	5.3
Goodwill impairment	(1,149.1)	(48.8)	(4.1)
Loss on contingent consideration (Note 15)	0.0	(8.6)	(31.4)
Operating income (loss)	(1,200.4)	127.7	60.1
Loss from unconsolidated affiliates, net	(60.8)	(0.7)	(0.1)
Interest and debt expense, net	(130.5)	(111.4)	(71.7)
Loss on modification/extinguishment of debt	(18.9)	0.0	0.0
Loss before income taxes	(1,410.6)	15.6	(11.7)
Provision (benefit) for income taxes	0.0	0.9	0.7
Net loss	(1,410.6)	14.7	(12.4)
Net loss attributable to non-controlling partners	(23.1)	(16.8)	(4.9)
Net income (loss) attributable to parent	(1,433.7)	(2.1)	(17.3)
Net income attributable to preferred units	(23.1)	(17.2)	0.0
Net income (loss) attributable to partners	$ (1,456.8)	$ (19.3)	$ (17.3)