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Segment Information (Tables)
 6 Months Ended
Jun. 30, 2012
Segment Information [Abstract]  
Amounts Related To Balance Sheets For Each Segment
Management believes segment margin is an important measure because it directly relates to volume, commodity p
Reconciliation Of Total Segment Margin To Net Income (Loss) From Continuing Operations Before Income Taxes
The table below provides a reconciliation of total segment margin to income before income taxes:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2012

2011
 
2012
 
2011
Total segment margin
$
125,161

 
$
97,023

 
$
243,407

 
$
198,014

Operation and maintenance
(38,992
)
 
(33,996
)
 
(79,973
)
 
(67,556
)
General and administrative
(16,476
)
 
(17,551
)
 
(32,171
)
 
(36,660
)
Loss on asset sales, net
(1,548
)
 
(153
)
 
(1,584
)
 
(181
)
Depreciation and amortization
(45,132
)
 
(40,503
)
 
(96,638
)
 
(80,739
)
Income from unconsolidated affiliates
34,185

 
32,167

 
66,143

 
55,975

Interest expense, net
(27,934
)
 
(24,689
)
 
(57,491
)
 
(44,696
)
Loss on debt refinancing, net
(7,820
)
 
—

 
(7,820
)
 
—

Other income and deductions, net
7,921

 
2,641

 
24,443

*
5,055

Income before income taxes
$
29,365

 
$
14,939

 
$
58,316


$
29,212


__________________
*
Other income and deductions, net for the six months ended June 30, 2012 included a one-time producer payment of $15.6 million related to an assignment of certain contracts.
Schedule Of Assets Related To Balance Sheet
The table below provides a listing of assets reflected in the consolidated balance sheet for each segment:
 
June 30,
2012
 
December 31,
2011
Gathering and Processing
$
2,062,306

 
$
1,959,697

Joint Ventures
2,080,163

 
1,924,705

Contract Compression
1,405,989

 
1,405,600

Contract Treating
219,377

 
215,172

Corporate and Others
64,727

 
62,682

Total
$
5,832,562

 
$
5,567,856