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Segment Information (Tables)
 6 Months Ended
Jun. 30, 2013
Segment Information [Abstract]  
Amounts Related To Balance Sheets For Each Segment
Results for each segment are shown below:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2013
 
2012
 
2013
 
2012
External Revenues
 
 
 
 
 
 
 
Gathering and Processing
$
583

 
$
462

 
$
1,069

 
$
787

Natural Gas Transportation
—

 
—

 
—

 
—

NGL Services
—

 
—

 
—

 
—

Contract Services
52

 
44

 
101

 
90

Corporate
4

 
5

 
9

 
9

Eliminations
—

 
—

 
—

 
—

Total
$
639

 
$
511

 
$
1,179

 
$
886

Intersegment Revenues
 
 
 
 
 
 
 
Gathering and Processing
$
—

 
$
—

 
$
—

 
$
—

Natural Gas Transportation
—

 
—

 
—

 
—

NGL Services
—

 
—

 
—

 
—

Contract Services
4

 
5

 
7

 
10

Corporate
—

 
—

 
—

 
—

Eliminations
(4
)
 
(5
)
 
(7
)
 
(10
)
Total
$
—

 
$
—

 
$
—

 
$
—

Segment Margin
 
 
 
 
 
 
 
Gathering and Processing
$
145

 
$
130

 
$
248

 
$
204

Natural Gas Transportation
—

 
—

 
—

 
1

NGL Services
—

 
—

 
—

 
—

Contract Services
49

 
45

 
97

 
92

Corporate
4

 
5

 
9

 
9

Eliminations
(4
)
 
(5
)
 
(7
)
 
(10
)
Total
$
194

 
$
175

 
$
347

 
$
296

Operation and Maintenance
 
 
 
 
 
 
 
Gathering and Processing
$
60

 
$
47

 
$
114

 
$
76

Natural Gas Transportation
—

 
—

 
—

 
—

NGL Services
—

 
—

 
—

 
—

Contract Services
17

 
15

 
35

 
32

Corporate
—

 
—

 
—

 
—

Eliminations
(4
)
 
(5
)
 
(7
)
 
(10
)
Total
$
73

 
$
57

 
$
142

 
$
98
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 (loss) income before income taxes:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
 
2013

2012
 
2013
 
2012
 
Total segment margin
$
194

 
$
175

 
$
347

 
$
296

 
Operation and maintenance
(73
)
 
(57
)
 
(142
)
 
(98
)
 
General and administrative
(18
)
 
(25
)
 
(51
)
 
(57
)
 
Loss on asset sales, net
(1
)
 
(2
)
 
(2
)
 
(2
)
 
Depreciation and amortization
(68
)
 
(69
)
 
(133
)
 
(122
)
 
Income from unconsolidated affiliates
31

 
34

 
66

 
66

 
Interest expense, net
(41
)
 
(28
)
 
(78
)
 
(57
)
 
Loss on debt refinancing, net
(7
)
 
(8
)
 
(7
)
 
(8
)
 
Other income and deductions, net
(7
)
 
8

 
(21
)
 
25

*
Income (loss) before income taxes
$
10

 
$
28

 
$
(21
)
 
$
43

 
__________________
*
Other income and deductions, net for the six months ended June 30, 2012 included a one-time producer payment of $16 million related to an assignment of certain contracts.
Schedule Of Assets Related To Balance Sheet
The tables below provide amounts reflected in the consolidated balance sheet for each segment:
Total Assets
June 30,
2013
 
December 31,
2012
Gathering and Processing
$
4,491

 
$
4,210

Natural Gas Transportation
1,202

 
1,232

NGL Services
987

 
948

Contract Services
1,761

 
1,672

Corporate
80

 
61

Total
$
8,521

 
$
8,123

Investment in Unconsolidated Affiliates
June 30,
2013
 
December 31,
2012
Gathering and Processing
$
36

 
$
35

Natural Gas Transportation
1,201

 
1,231

NGL Services
987

 
948

Total
$
2,224

 
$
2,214