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Fair Value (Tables)
 3 Months Ended
Mar. 31, 2014
Fair Value Disclosures [Abstract]  
Assets and liabilities measured and recorded at fair value on a recurring basis
The following table presents assets and liabilities measured and recorded at fair value on a recurring basis as of March 31, 2014 and December 31, 2013:
 
March 31, 2014
 
December 31, 2013
 
Level 1
 
Level 2
 
Level 3
 
Netting (a)
 
Net Balance
 
Level 1
 
Level 2
 
Level 3
 
Netting (a)
 
Net Balance
 
(In millions)
Assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Cash equivalents (b)
$
11

 
$
47

 
$
—

 
$
—

 
$
58

 
$
10

 
$
115

 
$
—

 
$
—

 
$
125

Nuclear decommissioning trusts
764

 
431

 
—

 
—

 
1,195

 
779

 
412

 
—

 
—

 
1,191

Other investments (c) (d)
89

 
49

 
—

 
—

 
138

 
92

 
44

 
—

 
—

 
136

Derivative assets:
 

 
 

 
 

 
 

 
 
 
 

 
 

 
 

 
 

 
 
Commodity Contracts:
 

 
 

 
 

 
 

 
 
 
 
 
 
 
 
 
 
 
 
Natural Gas
251

 
72

 
60

 
(367
)
 
16

 
273

 
89

 
34

 
(382
)
 
14

Electricity
—

 
426

 
77

 
(422
)
 
81

 
—

 
261

 
139

 
(291
)
 
109

Other
36

 
3

 
1

 
(41
)
 
(1
)
 
33

 
1

 
3

 
(34
)
 
3

Total derivative assets
287

 
501

 
138

 
(830
)
 
96

 
306

 
351

 
176

 
(707
)
 
126

Total
$
1,151

 
$
1,028

 
$
138

 
$
(830
)
 
$
1,487

 
$
1,187

 
$
922

 
$
176

 
$
(707
)
 
$
1,578

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Liabilities:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Derivative liabilities:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commodity Contracts:
 

 
 

 
 

 
 

 
 
 
 

 
 

 
 

 
 

 
 
Natural Gas
$
(255
)
 
$
(91
)
 
$
(70
)
 
$
369

 
$
(47
)
 
$
(277
)
 
$
(140
)
 
$
(86
)
 
$
395

 
$
(108
)
Electricity
—

 
(413
)
 
(111
)
 
417

 
(107
)
 
—

 
(272
)
 
(126
)
 
269

 
(129
)
Other
(34
)
 
(6
)
 
—

 
41

 
1

 
(32
)
 
(2
)
 
—

 
34

 
—

Other derivative contracts (f)
—

 
(4
)
 
—

 
1

 
(3
)
 
—

 
(1
)
 
—

 
—

 
(1
)
Total derivative liabilities
(289
)
 
(514
)
 
(181
)
 
828

 
(156
)
 
(309
)
 
(415
)
 
(212
)
 
698

 
(238
)
Total
$
(289
)
 
$
(514
)
 
$
(181
)
 
$
828

 
$
(156
)
 
$
(309
)
 
$
(415
)
 
$
(212
)
 
$
698

 
$
(238
)
Net Assets (Liabilities) at the end of the period
$
862

 
$
514

 
$
(43
)
 
$
(2
)
 
$
1,331

 
$
878

 
$
507

 
$
(36
)
 
$
(9
)
 
$
1,340

Assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Current
$
270

 
$
514

 
$
115

 
$
(762
)
 
$
137

 
$
277

 
$
400

 
$
139

 
$
(592
)
 
$
224

Noncurrent (e)
881

 
514

 
23

 
(68
)
 
1,350

 
910

 
522

 
37

 
(115
)
 
1,354

Total Assets
$
1,151

 
$
1,028

 
$
138

 
$
(830
)
 
$
1,487

 
$
1,187

 
$
922

 
$
176

 
$
(707
)
 
$
1,578

Liabilities:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Current
$
(259
)
 
$
(472
)
 
$
(168
)
 
$
759

 
$
(140
)
 
$
(268
)
 
$
(328
)
 
$
(177
)
 
$
578

 
$
(195
)
Noncurrent
(30
)
 
(42
)
 
(13
)
 
69

 
(16
)
 
(41
)
 
(87
)
 
(35
)
 
120

 
(43
)
Total Liabilities
$
(289
)
 
$
(514
)
 
$
(181
)
 
$
828

 
$
(156
)
 
$
(309
)
 
$
(415
)
 
$
(212
)
 
$
698

 
$
(238
)
Net Assets (Liabilities) at the end of the period
$
862

 
$
514

 
$
(43
)
 
$
(2
)
 
$
1,331

 
$
878

 
$
507

 
$
(36
)
 
$
(9
)
 
$
1,340


_______________________________________
(a)
Amounts represent the impact of master netting agreements that allow the Company to net gain and loss positions and cash collateral held or placed with the same counterparties.
(b)
At March 31, 2014, available-for-sale securities of $58 million included $43 million and $15 million of cash equivalents included in Restricted cash and Other investments on the Consolidated Statements of Financial Position, respectively. At December 31, 2013, available-for-sale securities of $125 million, included $109 million and $16 million of cash equivalents included in Restricted cash and Other investments on the Consolidated Statements of Financial Position, respectively.
(c)
Excludes cash surrender value of life insurance investments.
(d)
Available-for-sale equity securities of $7 million at both March 31, 2014 and December 31, 2013, are included in Other investments on the Consolidated Statements of Financial Position.
(e)
Includes $138 million and $136 million at March 31, 2014 and December 31, 2013, respectively, of other investments that are included in the Consolidated Statements of Financial Position in Other investments.
(f)
Includes Interest rate contracts and Foreign currency exchange contracts.
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
The following tables present the fair value reconciliation of Level 3 assets and liabilities measured at fair value on a recurring basis for the three months ended March 31, 2014 and 2013:

 
Three Months Ended March 31, 2014
 
Three Months Ended March 31, 2013
 
Natural Gas
 
Electricity
 
Other
 
Total
 
Natural Gas
 
Electricity
 
Other
 
Total
 
(In millions)
Net Assets (Liabilities) as of January 1
$
(52
)
 
$
13

 
$
3

 
$
(36
)
 
$
(38
)
 
$
23

 
$
2

 
$
(13
)
Transfers into Level 3
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Transfers out of Level 3
—

 
—

 
—

 
—

 
(2
)
 
—

 
—

 
(2
)
Total gains (losses):
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Included in earnings
(22
)
 
36

 
—

 
14

 
(8
)
 
8

 
—

 
—

Recorded in regulatory assets/liabilities
—

 
—

 
4

 
4

 
—

 
—

 
1

 
1

Purchases, issuances and settlements:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Issuances
—

 
(1
)
 
—

 
(1
)
 
—

 
—

 
—

 
—

Settlements
64

 
(82
)
 
(6
)
 
(24
)
 
14

 
(40
)
 
(1
)
 
(27
)
Net Assets (Liabilities) as of March 31
$
(10
)
 
$
(34
)
 
$
1

 
$
(43
)
 
$
(34
)
 
$
(9
)
 
$
2

 
$
(41
)
The amount of total gains (losses) included in net income attributed to the change in unrealized gains (losses) related to assets and liabilities held at March 31, 2014 and 2013 and reflected in Operating revenues and Fuel, purchased power and gas in the Consolidated Statements of Operations
$
—

 
$
(20
)
 
$
—

 
$
(20
)
 
$
(5
)
 
$
(6
)
 
$
—

 
$
(11
)
Transfers Between Level 1 Level 2 and Level 3 [Table Text Block]
The following table shows transfers between the levels of the fair value hierarchy for the three months ended March 31, 2014 and 2013:
 
Three Months Ended March 31, 2014
Three Months Ended March 31, 2013
 
Level 1
 
Level 2
 
Level 3
 
Level 1
 
Level 2
 
Level 3
 
(In millions)
Transfers into Level 1 from
$ N/A

 
$
—

 
$
—

 
$ N/A

 
$
—

 
$
—

Transfers into Level 2 from
—

 
N/A

 
—

 
—

 
N/A

 
2

Transfers into Level 3 from
—

 
—

 
N/A

 
—

 
—

 
N/A
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Table Text Block]
The following table presents the unobservable inputs related to Level 3 assets and liabilities as of March 31, 2014:
 
 
March 31, 2014
 
 
 
 
 
 
 
 
 
 
Commodity Contracts
 
Derivative Assets
 
Derivative Liabilities
 
Valuation Techniques
 
Unobservable Input
 
Range
 
Weighted Average
 
 
(In millions)
 
 
 
 
 
 
 
 
 
 
Natural Gas
 
$
60

 
$
(70
)
 
Discounted Cash Flow
 
Forward basis price (per MMBtu)
 
$
(1.50
)
—
$
1.50
/MMBtu
 
$
(0.17
)/MMBtu
Electricity
 
$
77

 
$
(111
)
 
Discounted Cash Flow
 
Forward basis price (per MWh)
 
$
(3
)
—
$
23
/MWh
 
$
5
/MWh


The following table presents the unobservable inputs related to Level 3 assets and liabilities as of December 31, 2013:
 
 
December 31, 2013
 
 
 
 
 
 
 
 
 
 
Commodity Contracts
 
Derivative Assets
 
Derivative Liabilities
 
Valuation Techniques
 
Unobservable Input
 
Range
 
Weighted Average
 
 
(In millions)
 
 
 
 
 
 
 
 
 
 
Natural Gas
 
$
34

 
$
(86
)
 
Discounted Cash Flow
 
Forward basis price (per MMBtu)
 
$
(0.88
)
—
$
5.07
/MMBtu
 
$
(0.16
)/MMBtu
Electricity
 
$
139

 
$
(126
)
 
Discounted Cash Flow
 
Forward basis price (per MWh)
 
$
(7
)
—
$
15
/MWh
 
$
3
/MWh
Fair Value of Financial Instruments [Table Text Block]
The following table presents the carrying amount and fair value of financial instruments as of March 31, 2014 and December 31, 2013:
 
March 31, 2014
 
December 31, 2013
 
Carrying
 
Fair Value
 
Carrying
 
Fair Value
 
Amount
 
Level 1
 
Level 2
 
Level 3
 
Amount
 
Level 1
 
Level 2
 
Level 3
 
(In millions)
Notes receivable, excluding capital leases
$
43

 
$
—

 
$
—

 
$
43

 
$
41

 
$
—

 
$
—

 
$
41

Dividends payable
$
116

 
$
116

 
$
—

 
$
—

 
$
116

 
$
116

 
$
—

 
$
—

Short-term borrowings
$
375

 
$
—

 
$
375

 
$
—

 
$
131

 
$
—

 
$
131

 
$
—

Long-term debt
$
7,979

 
$
461

 
$
7,398

 
$
743

 
$
8,094

 
$
425

 
$
7,551

 
$
499
Fair Value of Nuclear Decommissioning Trust Fund Assets [Table Text Block]
The following table summarizes the fair value of the nuclear decommissioning trust fund assets:
 
March 31,
2014
 
December 31, 2013
 
(In millions)
Fermi 2
$
1,174

 
$
1,172

Fermi 1
3

 
3

Low level radioactive waste
18

 
16

Total
$
1,195

 
$
1,191
Schedule of Realized Gain (Loss) [Table Text Block]
The following table sets forth the gains and losses and proceeds from the sale of securities by the nuclear decommissioning trust funds:
 
Three Months Ended March 31,
 
2014
 
2013
 
(In millions)
Realized gains
$
9

 
$
8

Realized losses
$
(7
)
 
$
(7
)
Proceeds from sales of securities
$
271

 
$
136
Fair Value and Unrealized Gains for Nuclear Decommissioning Trust Fund [Table Text Block]
The following table sets forth the fair value and unrealized gains for the nuclear decommissioning trust funds:
 
March 31, 2014
 
December 31, 2013
 
Fair
Value
 
Unrealized
Gains
 
Fair
Value
 
Unrealized
Gains
 
(In millions)
Equity securities
$
730

 
$
197

 
$
730

 
$
201

Debt securities
452

 
16

 
442

 
12

Cash and cash equivalents
13

 
—

 
19

 
—

 
$
1,195

 
$
213

 
$
1,191

 
$
213