Intangible Assets and Goodwill (Tables)

6 Months Ended

Jun. 30, 2012

Intangible Assets and Goodwill [Abstract]

Intangible Assets by Segment

The following table summarizes our intangible assets by business segment at the dates indicated:

	June 30, 2012							December 31, 2011
	Gross Value		Accum. Amort.			Carrying Value		Gross Value		Accum. Amort.			Carrying Value
NGL Pipelines & Services:
Customer relationship intangibles	$	340.8	$	(138.0	)	$	202.8	$	340.8	$	(128.2	)	$	212.6
Contract-based intangibles		284.7		(147.1	)		137.6		298.4		(169.7	)		128.7
Segment total		625.5		(285.1	)		340.4		639.2		(297.9	)		341.3
Onshore Natural Gas Pipelines & Services:
Customer relationship intangibles		1,163.6		(230.5	)		933.1		1,163.6		(209.7	)		953.9
Contract-based intangibles		468.3		(301.7	)		166.6		464.8		(290.9	)		173.9
Segment total		1,631.9		(532.2	)		1,099.7		1,628.4		(500.6	)		1,127.8
Onshore Crude Oil Pipelines & Services:
Customer relationship intangibles		9.7		(4.4	)		5.3		9.7		(4.1	)		5.6
Contract-based intangibles		0.4		(0.2	)		0.2		0.4		(0.2	)		0.2
Segment total		10.1		(4.6	)		5.5		10.1		(4.3	)		5.8
Offshore Pipelines & Services:
Customer relationship intangibles		205.8		(134.3	)		71.5		205.8		(129.2	)		76.6
Contract-based intangibles		1.2		(0.4	)		0.8		1.2		(0.3	)		0.9
Segment total		207.0		(134.7	)		72.3		207.0		(129.5	)		77.5
Petrochemical & Refined Products Services:
Customer relationship intangibles		104.3		(30.9	)		73.4		104.3		(28.4	)		75.9
Contract-based intangibles		59.7		(31.8	)		27.9		57.6		(29.7	)		27.9
Segment total		164.0		(62.7	)		101.3		161.9		(58.1	)		103.8
Total all segments	$	2,638.5	$	(1,019.3	)	$	1,619.2	$	2,646.6	$	(990.4	)	$	1,656.2

Amortization Expense of Intangible Assets by Segment

The following table presents the amortization expense of our intangible assets by business segment for the periods presented:

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2012		2011		2012		2011
NGL Pipelines & Services	$	9.6	$	10.0	$	19.8	$	20.4
Onshore Natural Gas Pipelines & Services		15.8		20.2		31.6		40.1
Onshore Crude Oil Pipelines & Services		0.1		0.1		0.3		0.2
Offshore Pipelines & Services		2.6		2.8		5.2		5.8
Petrochemical & Refined Products Services		3.2		4.3		6.7		8.6
Total	$	31.3	$	37.4	$	63.6	$	75.1

Forecasted Amortization Expense

The following table presents our forecast of amortization expense associated with existing intangible assets for the periods indicated:

Remainder of 2012		2013		2014		2015		2016
$	60.0	$	111.6	$	107.1	$	106.6	$	107.8