Equity Method Investments

3 Months Ended

Mar. 31, 2017

Equity Method Investments and Joint Ventures [Abstract]

Equity Method Investments

Equity Method Investments

Equity investments in affiliates comprise the following as of the dates indicated:

	March 31, 2017			December 31, 2016
	Ownership	Investment Amount		Ownership	Investment Amount
Bengal	50.0%	$	76.7	50.0%	$	76.1
Odyssey	49.0%	3.1		49.0%	3.0
Mars	48.6%	128.4		48.6%	130.2
Poseidon	36.0%	9.9		36.0%	13.2
Proteus	10.0%	18.3		10.0%	19.1
Endymion	10.0%	20.4		10.0%	20.8
		$	256.8		$	262.4

Unamortized differences in the basis of the initial investments and our interest in the separate net assets within the financial statements of the investees are amortized into net income over the remaining useful lives of the underlying assets. As of March 31, 2017 and December 31, 2016, the unamortized basis differences included in our equity investments are $29.8 million and $30.9 million, respectively. The net amortization expense was $0.7 million and $0.3 million for the three months ended March 31, 2017 and 2016, respectively.

Our equity investments in affiliates balance was affected by the following during the periods indicated:

	Three Months Ended March 31, 2017
	Distributions Received		Income from Equity Investments		Purchase Price Adjustment
Bengal	$	4.7	$	5.3	$	—
Odyssey	4.2		4.3		—
Mars	23.3		21.5		—
Poseidon	10.1		6.8		—
Proteus	0.9		0.4		0.3
Endymion	0.7		0.4		0.1
	$	43.9	$	38.7	$	0.4

	Three Months Ended March 31, 2016
	Distributions Received		Income from Equity Investments
Bengal	$	6.3	$	5.4
Mars	9.9		10.9
Poseidon	10.1		6.9
	$	26.3	$	23.2

The following tables present aggregated selected unaudited income statement data for our equity method investments (on a 100% basis):

	Three Months Ended March 31, 2017
	Total Revenues		Total Operating Expenses		Operating Income		Net Income
Statements of Income
Bengal	$	17.8	$	7.2	$	10.6	$	10.6
Odyssey	9.8		1.0		8.8		8.8
Mars	64.9		19.9		45.0		45.0
Poseidon	28.9		8.1		20.8		19.4
Proteus	7.9		3.1		4.8		4.5
Endymion	8.6		3.1		5.5		5.2

	Three Months Ended March 31, 2016
	Total Revenues		Total Operating Expenses		Operating Income		Net Income
Statements of Income
Bengal	$	17.4	$	6.4	$	11.0	$	11.0
Mars	57.3		18.5		38.8		38.8
Poseidon	27.4		6.6		20.8		19.7

The difference between operating income and net income represents interest expense or interest income.