The following table presents our investments in unconsolidated affiliates by business segment at the dates indicated. Unless noted otherwise, we account for these investments using the equity method.

	Ownership Interest at September 30, 2013	September 30, 2013		December 31, 2012
NGL Pipelines & Services:
Venice Energy Service Company, L.L.C.	13.1%	$	28.1	$	29.6
K/D/S Promix, L.L.C.	50%		44.4		46.9
Baton Rouge Fractionators LLC	32.2%		19.3		20.2
Skelly-Belvieu Pipeline Company, L.L.C.	50%		40.5		38.2
Texas Express Pipeline LLC (1)	35%		328.5		144.4
Texas Express Gathering LLC (1)	45%		34.6		20.9
Front Range Pipeline LLC	33.3%		111.8		24.4
Onshore Natural Gas Pipelines & Services:
White River Hub, LLC	50%		24.3		24.9
Onshore Crude Oil Pipelines & Services:
Seaway Crude Pipeline Company LLC	50%		677.2		341.4
Eagle Ford Pipeline LLC (2)	50%		212.4		152.4
Offshore Pipelines & Services:
Poseidon Oil Pipeline Company, L.L.C. ("Poseidon")	36%		43.4		47.3
Cameron Highway Oil Pipeline Company	50%		209.9		220.0
Deepwater Gateway, L.L.C.	50%		86.2		90.0
Neptune Pipeline Company, L.L.C.	25.7%		43.7		46.8
Southeast Keathley Canyon Pipeline Company L.L.C.	50%		157.2		74.9
Petrochemical & Refined Products Services:
Baton Rouge Propylene Concentrator, LLC	30%		7.8		8.5
Centennial Pipeline LLC ("Centennial")	50%		62.3		60.8
Other (3)	Various		2.9		3.0
Total		$	2,134.5	$	1,394.6

(1) Planned principal operations commenced in November 2013. (2) Planned principal operations commenced in July 2013. (3) Other unconsolidated affiliates include a 50% interest in a propylene pipeline extending from Mont Belvieu, Texas to La Porte, Texas and a 25% interest in a company that provides logistics communications solutions between petroleum pipelines and their customers.

The following table presents our equity in income (loss) of unconsolidated affiliates by business segment for the periods indicated:

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2013			2012			2013			2012
NGL Pipelines & Services	$	4.1		$	3.0		$	11.8		$	12.0
Onshore Natural Gas Pipelines & Services		1.0			0.9			2.9			3.5
Onshore Crude Oil Pipelines & Services		34.3			16.5			101.0			20.6
Offshore Pipelines & Services		9.8			6.8			24.9			17.8
Petrochemical & Refined Products Services		(5.2	)		(6.2	)		(14.5	)		(14.1	)
Other Investments		--			--			--			2.4
Total	$	44.0		$	21.0		$	126.1		$	42.2

The following table presents our unamortized excess cost amounts by business segment at the dates indicated:

	September 30, 2013		December 31, 2012
NGL Pipelines & Services	$	28.0	$	28.9
Onshore Crude Oil Pipelines & Services		18.0		18.5
Offshore Pipelines & Services		12.6		13.6
Petrochemical & Refined Products Services		2.6		2.7
Total	$	61.2	$	63.7

The following table presents our amortization of excess cost amounts by business segment for the periods indicated:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2013		2012		2013		2012
NGL Pipelines & Services	$	0.3	$	0.2	$	0.9	$	0.7
Onshore Crude Oil Pipelines & Services		0.1		0.2		0.5		0.5
Offshore Pipelines & Services		0.3		0.3		1.0		0.9
Petrochemical & Refined Products Services		0.1		--		0.1		0.1
Other Investments		--		--		--		0.3
Total	$	0.8	$	0.7	$	2.5	$	2.5