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Equity Method Investments (Tables)
12 Months Ended
Dec. 31, 2018
Equity Method Investments and Joint Ventures [Abstract]  
Schedule of Equity Investments in Affiliates
Equity method investments comprise the following as of the dates indicated:  
December 31, 
2018 2017 
Ownership Amount Ownership Amount 
Amberjack – Series A / Series B (1)
75.0% / 50.0% $457.5 —%  $— 
Mars 71.5%  168.9 71.5%  187.4 
Bengal 50.0%  81.5 50.0%  79.7 
Permian Basin 50.0%  72.2 50.0%  49.4 
LOCAP 41.48%  8.2 41.48%  6.9 
Poseidon  36.0%  — 36.0%  2.3 
Proteus 10.0%  16.3 10.0%  17.4 
Endymion 10.0%  18.3 10.0%  19.5 
$822.9 $362.6 
(1) We acquired an interest in Amberjack in the May 2018 Acquisition. The acquisition of this interest has been accounted for prospectively.
Schedule Of Equity Investments In Affiliates Balance Affected Table
Our equity investments in affiliates balance was affected by the following during the periods indicated:

For the Year Ended December 31, 
2018 2017 2016 
 Distributions Received Income from Equity Method Investments  Impact of Change in Accounting PolicyDistributions Received Income from Equity Method Investments  Purchase Price Adjustment Distributions Received Income from Equity Method Investments  
Amberjack (1)
$104.4 $80.3 $— $— $— $— $— $— 
Mars (2)
119.3 107.7 (6.9)125.9 121.8 — 88.3 79.8 
Bengal 19.0 20.8 — 19.0 22.6 — 19.6 20.2 
Poseidon (3)
33.1 6.4 — 38.4 27.4 — 41.9 29.7 
Other (4)
25.9 19.7 — 15.0 14.8 0.3 8.2 8.4 
$301.7 $234.9 $(6.9)$198.3 $186.6 $0.3 $158.0 $138.1 
(1) We acquired an interest in Amberjack in the May 2018 Acquisition. The acquisition of this interest has been accounted for prospectively.  
(2) We acquired an additional 22.9% interest in Mars in the December 2017 Acquisition.
(3) As stated above, the equity method of accounting has been suspended for Poseidon and excess distributions are recorded in Other income. (4) Included in Other is the activity associated with our investments in Permian Basin, LOCAP, Proteus and Endymion. We acquired a 41.48% interest in LOCAP in the December 2017 Acquisition. The acquisition of our ownership interests in Proteus and Endymion was effective in the December 2016 Acquisition, for which we were not entitled to a distribution and the related equity investment income was less than $0.1 million.
Summary of Balance Sheet and Income Statement Data for Equity Method Investments
The following presents aggregated selected balance sheet and income statement data for our equity method investments (on a 100% basis):
 
For the Year Ended December 31, 2018 
Total revenues Total operating expenses Operating income Net income 
Statements of Income 
Amberjack (1)
$204.0 $47.3 $156.7 $156.8 
Mars241.3 87.4 153.9 153.9 
Bengal69.2 28.1 41.1 41.1 
Poseidon115.5 34.6 80.9 73.0 
Other (2)
152.2 67.0 85.2 75.8 

As of December 31, 2018 
Current assets Non-current assets Total assets Current liabilities Non-current liabilities Equity (deficit) Total liabilities and equity (deficit) 
Balance Sheets 
Amberjack (1)
$45.8 $846.2 $892.0 $4.3 $4.2 $883.5 $892.0 
Mars53.1 178.2 231.3 5.4 18.4 207.5 231.3 
Bengal27.1 155.4 182.5 8.7 — 173.8 182.5 
Poseidon18.9 203.0 221.9 15.9 242.9 (36.9)221.9 
Other (2)
49.7 875.7 925.4 64.5 455.5 405.4 925.4 
(1) Our interest in Amberjack was acquired on May 11, 2018. Amberjack total revenues, total operating expenses and operating income (on a 100% basis) was $294.9 million, $73.5 million and $221.4 million, respectively.
(2) Included in Other is the activity associated with our investments in Permian Basin, LOCAP, Proteus and Endymion.

For the Year Ended December 31, 2017 
Total revenues Total operating expenses Operating income Net income 
Statements of Income 
Mars$255.5 $81.9 $173.6 $173.6 
Bengal72.8 28.1 44.7 44.8 
Poseidon117.1 32.6 84.5 78.5 
Other (1)
123.7 46.2 77.5 66.0 
As of December 31, 2017 
Current assets Non-current assets Total assets Current liabilities Non-current liabilities Equity (deficit) Total liabilities and equity (deficit) 
Balance Sheets 
Mars$47.6 $187.5 $235.1 $5.1 $— $230.0 $235.1 
Bengal25.0 156.6 181.6 10.5 0.3 170.8 181.6 
Poseidon18.7 218.6 237.3 17.6 237.4 (17.7)237.3 
Other (1)
91.6 625.3 716.9 98.9 244.7 373.3 716.9 
(1) Included in Other is the activity associated with our investments in Permian Basin, LOCAP, Proteus and Endymion. Interest in Permian Basin was acquired by us on October 17, 2017 and is pro-rated in above table. For the year ended December 31, 2017, Permian Basin total revenue, total operating expenses and operating income (on a 100% basis) was $8.3 million, $5.0 million and $3.3 million, respectively.


For the Year Ended December 31, 2016 
Total revenues Total operating expenses Operating income Net income 
Statements of Income 
Mars$229.8 $83.0 $146.8 $146.8 
Bengal69.5 28.7 40.8 40.2 
Poseidon120.3 30.7 89.6 84.9 
Other (1)
52.0 17.4 34.6 20.9 

As of December 31, 2016 
Current assets Non-current assets Total assets Current liabilities Non-current liabilities Equity Total liabilities and equity 
Balance Sheets 
Mars$40.0 $197.5 $237.5 $5.1 $— $232.4 $237.5 
Bengal34.0 147.5 181.5 16.8 0.7 164.0 181.5 
Poseidon17.1 233.6 250.7 20.7 219.7 10.3 250.7 
Other (1)
42.5 395.4 437.9 43.9 100.8 293.2 437.9 
(1) Interests in Proteus and Endymion were acquired by us on December 27, 2016, and is pro-rated in above table. For 2016, Proteus total revenue, total operating expenses and operating income (on a 100% basis) was $24.7 million, $11.7 million and $13.0 million, respectively. For 2016, Endymion total revenue, total operating expenses and operating income (on a 100% basis) was $28.1 million, $12.3 million and $15.8 million, respectively.
Capital Contributions
In accordance with the Member Interest Purchase Agreement entered into in conjunction with the acquisition of Permian Basin in October 2017, we will make capital contributions for our pro rata interest in Permian Basin to fund capital and other expenditures, as approved by supermajority (75%) vote of the members. We made capital contributions of $28.0 million in 2018.