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Guarantees of Debt (Tables)
 12 Months Ended
Dec. 31, 2017
Guarantees of Debt [Line Items]  
Schedule Of Financial Statements Of Guarantors
The following tables present condensed financial information for the guarantor subsidiaries, as well as Power’s non-guarantor subsidiaries, as of December 31, 2017 and 2016 and for the years ended December 31, 2017, 2016 and 2015.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Power
 
Guarantor
Subsidiaries
 
Other
Subsidiaries
 
Consolidating
Adjustments
 
Total
 
 
 
 
Millions
 
 
Year Ended December 31, 2017
 
 
 
 
 
 
 
 
 
 
 
 
Operating Revenues
 
$
—

 
$
3,891

 
$
174

 
$
(135
)
 
$
3,930

 
 
Operating Expenses
 
8

 
4,221

 
195

 
(135
)
 
4,289

 
 
Operating Income (Loss)
 
(8
)
 
(330
)
 
(21
)
 
—

 
(359
)
 
 
Equity Earnings (Losses) of Subsidiaries
 
567

 
60

 
14

 
(627
)
 
14

 
 
Other Income
 
98

 
257

 
2

 
(144
)
 
213

 
 
Other Deductions
 
(24
)
 
(32
)
 
—

 
—

 
(56
)
 
 
Other-Than-Temporary Impairments
 
—

 
(12
)
 
—

 
—

 
(12
)
 
 
Interest Expense
 
(128
)
 
(49
)
 
(17
)
 
144

 
(50
)
 
 
Income Tax Benefit (Expense)
 
(26
)
 
588

 
167

 
—

 
729

 
 
Net Income (Loss)
 
$
479

 
$
482

 
$
145

 
$
(627
)
 
$
479

 
 
  Comprehensive Income (Loss)
 
$
518

 
$
529

 
$
145

 
$
(674
)
 
$
518

 
 
As of December 31, 2017
 
 
 
 
 
 
 
 
 
 
 
 
Current Assets
 
$
4,327

 
$
1,500

 
$
200

 
$
(4,686
)
 
$
1,341

 
 
Property, Plant and Equipment, net
 
54

 
5,778

 
2,764

 
—

 
8,596

 
 
Investment in Subsidiaries
 
4,844

 
404

 
—

 
(5,248
)
 
—

 
 
Noncurrent Assets
 
100

 
2,349

 
110

 
(78
)
 
2,481

 
 
Total Assets
 
$
9,325

 
$
10,031

 
$
3,074

 
$
(10,012
)
 
$
12,418

 
 
Current Liabilities
 
$
689

 
$
3,586

 
$
1,846

 
$
(4,686
)
 
$
1,435

 
 
Noncurrent Liabilities
 
533

 
1,966

 
459

 
(78
)
 
2,880

 
 
Long-Term Debt
 
2,136

 
—

 
—

 
—

 
2,136

 
 
Member’s Equity
 
5,967

 
4,479

 
769

 
(5,248
)
 
5,967

 
 
Total Liabilities and Member’s Equity
 
$
9,325

 
$
10,031

 
$
3,074

 
$
(10,012
)
 
$
12,418

 
 
Year Ended December 31, 2017
 
 
 
 
 
 
 
 
 
 
 
 
Net Cash Provided By (Used In) Operating Activities
 
$
(42
)
 
$
1,185

 
$
238

 
$
(55
)
 
$
1,326

 
 
Net Cash Provided By (Used In) Investing Activities
 
$
506

 
$
(448
)
 
$
(525
)
 
$
(765
)
 
$
(1,232
)
 
 
Net Cash Provided By (Used In) Financing Activities
 
$
(464
)
 
$
(736
)
 
$
307

 
$
820

 
$
(73
)
 
 
 
 
 
 
 
 
 
 
 
 
 
 


 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Power
 
Guarantor
Subsidiaries
 
Other
Subsidiaries
 
Consolidating
Adjustments
 
Total
 
 
 
 
Millions
 
 
Year Ended December 31, 2016
 
 
 
 
 
 
 
 
 
 
 
 
Operating Revenues
 
$
—

 
$
3,971

 
$
173

 
$
(121
)
 
$
4,023

 
 
Operating Expenses
 
8

 
3,962

 
161

 
(121
)
 
4,010

 
 
Operating Income (Loss)
 
(8
)
 
9

 
12

 
—

 
13

 
 
Equity Earnings (Losses) of Subsidiaries
 
36

 
(3
)
 
11

 
(33
)
 
11

 
 
Other Income
 
71

 
120

 
—

 
(89
)
 
102

 
 
Other Deductions
 
(18
)
 
(39
)
 
—

 
—

 
(57
)
 
 
Other-Than-Temporary Impairments
 
—

 
(28
)
 
—

 
—

 
(28
)
 
 
Interest Expense
 
(115
)
 
(40
)
 
(18
)
 
89

 
(84
)
 
 
Income Tax Benefit (Expense)
 
52

 
(11
)
 
20

 
—

 
61

 
 
Net Income (Loss)
 
$
18

 
$
8

 
$
25

 
$
(33
)
 
$
18

 
 
  Comprehensive Income (Loss)
 
$
47

 
$
50

 
$
25

 
$
(75
)
 
$
47

 
 
As of December 31, 2016
 
 
 
 
 
 
 
 
 
 
 
 
Current Assets
 
$
4,412

 
$
1,593

 
$
152

 
$
(4,697
)
 
$
1,460

 
 
Property, Plant and Equipment, net
 
55

 
6,145

 
2,320

 
—

 
8,520

 
 
Investment in Subsidiaries
 
4,249

 
344

 
—

 
(4,593
)
 
—

 
 
Noncurrent Assets
 
168

 
2,016

 
129

 
(100
)
 
2,213

 
 
Total Assets
 
$
8,884

 
$
10,098

 
$
2,601

 
$
(9,390
)
 
$
12,193

 
 
Current Liabilities
 
$
171

 
$
3,752

 
$
1,454

 
$
(4,697
)
 
$
680

 
 
Noncurrent Liabilities
 
532

 
2,398

 
502

 
(100
)
 
3,332

 
 
Long-Term Debt
 
2,382

 
—

 
—

 
—

 
2,382

 
 
Member’s Equity
 
5,799

 
3,948

 
645

 
(4,593
)
 
5,799

 
 
Total Liabilities and Member’s Equity
 
$
8,884

 
$
10,098

 
$
2,601

 
$
(9,390
)
 
$
12,193

 
 
Year Ended December 31, 2016
 
 
 
 
 
 
 
 
 
 
 
 
Net Cash Provided By (Used In) Operating Activities
 
$
97

 
$
1,442

 
$
323

 
$
(607
)
 
$
1,255

 
 
Net Cash Provided By (Used In) Investing Activities
 
$
60

 
$
(707
)
 
$
(789
)
 
$
289

 
$
(1,147
)
 
 
Net Cash Provided By (Used In) Financing Activities
 
$
(157
)
 
$
(736
)
 
$
466

 
$
318

 
$
(109
)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Power
 
Guarantor
Subsidiaries
 
Other
Subsidiaries
 
Consolidating
Adjustments
 
Total
 
 
 
 
Millions
 
 
Year Ended December 31, 2015
 
 
 
 
 
 
 
 
 
 
 
 
Operating Revenues
 
$
—

 
$
4,883

 
$
179

 
$
(134
)
 
$
4,928

 
 
Operating Expenses
 
12

 
3,451

 
169

 
(134
)
 
3,498

 
 
Operating Income (Loss)
 
(12
)
 
1,432

 
10

 
—

 
1,430

 
 
Equity Earnings (Losses) of Subsidiaries
 
906

 
(4
)
 
14

 
(902
)
 
14

 
 
Other Income
 
48

 
174

 
—

 
(53
)
 
169

 
 
Other Deductions
 
(27
)
 
(45
)
 
—

 
—

 
(72
)
 
 
Other-Than-Temporary Impairments
 
—

 
(53
)
 
—

 
—

 
(53
)
 
 
Interest Expense
 
(116
)
 
(39
)
 
(19
)
 
53

 
(121
)
 
 
Income Tax Benefit (Expense)
 
57

 
(574
)
 
6

 
—

 
(511
)
 
 
Net Income (Loss)
 
$
856

 
$
891

 
$
11

 
$
(902
)
 
$
856

 
 
  Comprehensive Income (Loss)
 
$
844

 
$
855

 
$
11

 
$
(866
)
 
$
844

 
 
Year Ended December 31, 2015
 
 
 
 
 
 
 
 
 
 
 
 
Net Cash Provided By (Used In) Operating Activities
 
$
571

 
$
2,089

 
$
80

 
$
(1,034
)
 
$
1,706

 
 
Net Cash Provided By (Used In) Investing Activities
 
$
(366
)
 
$
(1,519
)
 
$
(430
)
 
$
1,314

 
$
(1,001
)
 
 
Net Cash Provided By (Used In) Financing Activities
 
$
(205
)
 
$
(571
)
 
$
354

 
$
(280
)
 
$
(702
)