Accumulated Other Comprehensive Income (Tables)
 9 Months Ended
Sep. 30, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Schedule of Accumulated Other Comprehensive Income
The changes in AOCI, net of tax, in the three and nine months ended September 30, 2016 and 2015, for FirstEnergy are included in the following tables:
FirstEnergy
 
Gains & Losses on Cash Flow Hedges
 
Unrealized Gains on AFS Securities
 
Defined Benefit Pension & OPEB Plans
 
Total
 
 
(In millions)
AOCI Balance as of July 1, 2016
 
$
(31
)
 
$
58

 
$
164

 
$
191

 
 
 
 
 
 
 
 
 
Other comprehensive income before reclassifications
 
—

 
21

 
—

 
21

Amounts reclassified from AOCI
 
2

 
(17
)
 
(18
)
 
(33
)
Other comprehensive income (loss)
 
2

 
4

 
(18
)
 
(12
)
Income taxes (benefits) on other comprehensive income (loss)
 
—

 
2

 
(7
)
 
(5
)
Other comprehensive income (loss), net of tax
 
2

 
2

 
(11
)
 
(7
)
 
 
 
 
 
 
 
 
 
AOCI Balance as of September 30, 2016
 
$
(29
)
 
$
60

 
$
153

 
$
184

 
 
 
 
 
 
 
 
 
AOCI Balance as of July 1, 2015
 
$
(36
)
 
$
19

 
$
219

 
$
202

 
 
 
 
 
 
 
 
 
Other comprehensive loss before reclassifications
 
—

 
(8
)
 
—

 
(8
)
Amounts reclassified from AOCI
 
2

 
(3
)
 
(31
)
 
(32
)
Other comprehensive income (loss)
 
2

 
(11
)
 
(31
)
 
(40
)
Income taxes (benefits) on other comprehensive income (loss)
 
1

 
(4
)
 
(12
)
 
(15
)
Other comprehensive income (loss), net of tax
 
1

 
(7
)
 
(19
)
 
(25
)
 
 
 
 
 
 
 
 
 
AOCI Balance as of September 30, 2015
 
$
(35
)
 
$
12

 
$
200

 
$
177

 
 
 
 
 
 
 
 
 
 
 
Gains & Losses on Cash Flow Hedges
 
Unrealized Gains on AFS Securities
 
Defined Benefit Pension & OPEB Plans
 
Total
 
 
(In millions)
AOCI Balance as of January 1, 2016
 
$
(33
)
 
$
18

 
$
186

 
$
171

 
 
 
 
 
 
 
 
 
Other comprehensive income before reclassifications
 
—

 
109

 
—

 
109

Amounts reclassified from AOCI
 
6

 
(42
)
 
(54
)
 
(90
)
Other comprehensive income (loss)
 
6

 
67

 
(54
)
 
19

Income taxes (benefits) on other comprehensive income (loss)
 
2

 
25

 
(21
)
 
6

Other comprehensive income (loss), net of tax
 
4

 
42

 
(33
)
 
13

 
 
 
 
 
 
 
 
 
AOCI Balance as of September 30, 2016
 
$
(29
)
 
$
60

 
$
153

 
$
184

 
 
 
 
 
 
 
 
 
AOCI Balance as of January 1, 2015
 
$
(37
)
 
$
25

 
$
258

 
$
246

 
 
 
 
 
 
 
 
 
Other comprehensive loss before reclassifications
 
—

 
(1
)
 
—

 
(1
)
Amounts reclassified from AOCI
 
4

 
(20
)
 
(94
)
 
(110
)
Other comprehensive income (loss)
 
4

 
(21
)
 
(94
)
 
(111
)
Income taxes (benefits) on other comprehensive income (loss)
 
2

 
(8
)
 
(36
)
 
(42
)
Other comprehensive income (loss), net of tax
 
2

 
(13
)
 
(58
)
 
(69
)
 
 
 
 
 
 
 
 
 
AOCI Balance as of September 30, 2015
 
$
(35
)
 
$
12

 
$
200

 
$
177

 
 
 
 
 
 
 
 
 
Reclassification out of Accumulated Other Comprehensive Income
The following amounts were reclassified from AOCI for FirstEnergy in the three and nine months ended September 30, 2016 and 2015:
 
 
For the Three Months Ended September 30
 
For the Nine Months Ended September 30
 
Affected Line Item in Consolidated Statements of Income (Loss)
Reclassifications from AOCI(2)
 
2016
 
2015
 
2016
 
2015
 
 
 
(In millions)
 
 
Gains & losses on cash flow hedges
 
 
 
 
 
 
 
 
 
 
Commodity contracts
 
$
—

 
$
—

 
$
—

 
$
(2
)
 
Other operating expenses
Long-term debt
 
2

 
2

 
6

 
6

 
Interest expense
 
 
2

 
2

 
6

 
4

 
Total before taxes
 
 
—

 
(1
)
 
(2
)
 
(2
)
 
Income taxes
 
 
$
2

 
$
1

 
$
4

 
$
2

 
Net of tax
 
 
 
 
 
 
 
 
 
 
 
Unrealized gains on AFS securities
 
 
 
 
 
 
 
 
 
 
Realized gains on sales of securities
 
$
(17
)
 
$
(3
)
 
$
(42
)
 
$
(20
)
 
Investment income (loss)
 
 
7

 
1

 
16

 
7

 
Income taxes
 
 
$
(10
)
 
$
(2
)
 
$
(26
)
 
$
(13
)
 
Net of tax
 
 
 
 
 
 
 
 
 
 
 
Defined benefit pension and OPEB plans
 
 
 
 
 
 
 
 
 
 
Prior-service costs
 
$
(18
)
 
$
(31
)
 
$
(54
)
 
$
(94
)
 
(1) 
 
 
7

 
12

 
21

 
36

 
Income taxes
 
 
$
(11
)
 
$
(19
)
 
$
(33
)
 
$
(58
)
 
Net of tax
 
 
 
 
 
 
 
 
 
 
 
(1) These AOCI components are included in the computation of net periodic pension cost. See Note 4, Pension and Other Postemployment Benefits for additional details.
(2) Amounts in parenthesis represent credits to the Consolidated Statements of Income (Loss) from AOCI.
FES  
Accumulated Other Comprehensive Income (Loss) [Line Items]  
Schedule of Accumulated Other Comprehensive Income
The changes in AOCI, net of tax, in the three and nine months ended September 30, 2016 and 2015, for FES are included in the following tables:
FES
 
 
 
 
 
 
 
 
 
 
Gains & Losses on Cash Flow Hedges
 
Unrealized Gains on AFS Securities
 
Defined Benefit Pension & OPEB Plans
 
Total
 
 
(In millions)
AOCI Balance as of July 1, 2016
 
$
(10
)
 
$
50

 
$
35

 
$
75

 
 
 
 
 
 
 
 
 
Other comprehensive income before reclassifications
 
—

 
22

 
—

 
22

Amounts reclassified from AOCI
 
1

 
(17
)
 
(3
)
 
(19
)
Other comprehensive income (loss)
 
1

 
5

 
(3
)
 
3

Income taxes (benefits) on other comprehensive income (loss)
 
—

 
2

 
(1
)
 
1

Other comprehensive income (loss), net of tax
 
1

 
3

 
(2
)
 
2

 
 
 
 
 
 
 
 
 
AOCI Balance as of September 30, 2016
 
$
(9
)
 
$
53

 
$
33

 
$
77

 
 
 
 
 
 
 
 
 
AOCI Balance as of July 1, 2015
 
$
(9
)
 
$
16

 
$
38

 
$
45

 
 
 
 
 
 
 
 
 
Other comprehensive loss before reclassifications
 
—

 
(7
)
 
—

 
(7
)
Amounts reclassified from AOCI
 
—

 
(4
)
 
(4
)
 
(8
)
Other comprehensive loss
 
—

 
(11
)
 
(4
)
 
(15
)
Income tax benefits on other comprehensive loss
 
—

 
(5
)
 
(1
)
 
(6
)
Other comprehensive loss, net of tax
 
—

 
(6
)
 
(3
)
 
(9
)
 
 
 
 
 
 
 
 
 
AOCI Balance as of September 30, 2015
 
$
(9
)
 
$
10

 
$
35

 
$
36

 
 
 
 
 
 
 
 
 
 
 
Gains & Losses on Cash Flow Hedges
 
Unrealized Gains on AFS Securities
 
Defined Benefit Pension & OPEB Plans
 
Total
 
 
(In millions)
AOCI Balance as of January 1, 2016
 
$
(9
)
 
$
16

 
$
39

 
$
46

 
 
 
 
 
 
 
 
 
Other comprehensive income before reclassifications
 
—

 
102

 
—

 
102

Amounts reclassified from AOCI
 
—

 
(41
)
 
(10
)
 
(51
)
Other comprehensive income (loss)
 
—

 
61

 
(10
)
 
51

Income taxes (benefits) on other comprehensive income (loss)
 
—

 
24

 
(4
)
 
20

Other comprehensive income (loss), net of tax
 
—

 
37

 
(6
)
 
31

 
 
 
 
 
 
 
 
 
AOCI Balance as of September 30, 2016
 
$
(9
)
 
$
53

 
$
33

 
$
77

 
 
 
 
 
 
 
 
 
AOCI Balance as of January 1, 2015
 
$
(7
)
 
$
21

 
$
43

 
$
57

 
 
 
 
 
 
 
 
 
Other comprehensive loss before reclassifications
 
—

 
(1
)
 
—

 
(1
)
Amounts reclassified from AOCI
 
(2
)
 
(19
)
 
(12
)
 
(33
)
Other comprehensive loss
 
(2
)
 
(20
)
 
(12
)
 
(34
)
Income tax benefits on other comprehensive loss
 
—

 
(9
)
 
(4
)
 
(13
)
Other comprehensive loss, net of tax
 
(2
)
 
(11
)
 
(8
)
 
(21
)
 
 
 
 
 
 
 
 
 
AOCI Balance as of September 30, 2015
 
$
(9
)
 
$
10

 
$
35

 
$
36
Reclassification out of Accumulated Other Comprehensive Income
The following amounts were reclassified from AOCI for FES in the three and nine months ended September 30, 2016 and 2015:
 
 
For the Three Months Ended September 30
 
For the Nine Months Ended September 30
 
Affected Line Item in Consolidated Statements of Income (Loss)
Reclassifications from AOCI(2)
 
2016
 
2015
 
2016
 
2015
 
 
 
(In millions)
 
 
Gains & losses on cash flow hedges
 
 
 
 
 
 
 
 
 
 
Commodity contracts
 
$
1

 
$
—

 
$
—

 
$
(2
)
 
Other operating expenses
 
 
—

 
—

 
—

 
—

 
Income taxes
 
 
$
1

 
$
—

 
$
—

 
$
(2
)
 
Net of tax
 
 
 
 
 
 
 
 
 
 
 
Unrealized gains on AFS securities
 
 
 
 
 
 
 
 
 
 
Realized gains on sales of securities
 
$
(17
)
 
$
(3
)
 
$
(41
)
 
$
(18
)
 
Investment income (loss)
 
 
6

 
1

 
15

 
7

 
Income taxes
 
 
$
(11
)
 
$
(2
)
 
$
(26
)
 
$
(11
)
 
Net of tax
 
 
 
 
 
 
 
 
 
 
 
Defined benefit pension and OPEB plans
 
 
 
 
 
 
 
 
 
 
Prior-service costs
 
$
(3
)
 
$
(4
)
 
$
(10
)
 
$
(12
)
 
(1) 
 
 
1

 
1

 
4

 
4

 
Income taxes
 
 
$
(2
)
 
$
(3
)
 
$
(6
)
 
$
(8
)
 
Net of tax
 
 
 
 
 
 
 
 
 
 
 
(1) These AOCI components are included in the computation of net periodic pension cost. See Note 4, Pension and Other Postemployment Benefits for additional details.
(2) Amounts in parenthesis represent credits to the Consolidated Statements of Operations from AOCI.