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Accumulated Other Comprehensive Income
 9 Months Ended
Sep. 30, 2015
Equity [Abstract]  
Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income
Dominion
The following table presents Dominion’s changes in AOCI by component, net of tax: 
 
Deferred gains and losses on derivatives-hedging activities
Unrealized gains and losses on investment securities
Unrecognized pension and other postretirement benefit costs
Other comprehensive income (loss) from equity method investee
Total
(millions)
 
 
 
 
 
Three Months Ended September 30, 2015
 
 
 
 
 
Beginning balance
$
(146
)
$
519

$
(754
)
$
(5
)
$
(386
)
Other comprehensive income before reclassifications: gains (losses)
(7
)
(59
)
(9
)
1

(74
)
Amounts reclassified from AOCI(1): (gains) losses
(53
)
(2
)
14

—

(41
)
Net current-period other comprehensive income (loss)
(60
)
(61
)
5

1

(115
)
Ending balance
$
(206
)
$
458

$
(749
)
$
(4
)
$
(501
)
Three Months Ended September 30, 2014
 
 
 
 
 
Beginning balance
$
(353
)
$
534

$
(493
)
$
(5
)
$
(317
)
Other comprehensive income before reclassifications: gains (losses)
(58
)
2

—

—

(56
)
Amounts reclassified from AOCI(1): (gains) losses
(31
)
(21
)
8

—

(44
)
Net current-period other comprehensive income (loss)
(89
)
(19
)
8

—

(100
)
Ending balance
$
(442
)
$
515

$
(485
)
$
(5
)
$
(417
)
Nine Months Ended September 30, 2015
 
 
 
 
 
Beginning balance
$
(178
)
$
548

$
(782
)
$
(4
)
$
(416
)
Other comprehensive income before reclassifications: gains (losses)
25

(55
)
(6
)
—

(36
)
Amounts reclassified from AOCI(1): (gains) losses
(53
)
(35
)
39

—

(49
)
Net current-period other comprehensive income (loss)
(28
)
(90
)
33

—

(85
)
Ending balance
$
(206
)
$
458

$
(749
)
$
(4
)
$
(501
)
Nine Months Ended September 30, 2014
 
 
 
 
 
Beginning balance
$
(288
)
$
474

$
(510
)
$
—

$
(324
)
Other comprehensive income before reclassifications: gains (losses)
(267
)
80

—

(5
)
(192
)
Amounts reclassified from AOCI(1): (gains) losses
113

(39
)
25

—

99

Net current-period other comprehensive income (loss)
(154
)
41

25

(5
)
(93
)
Ending balance
$
(442
)
$
515

$
(485
)
$
(5
)
$
(417
)
(1) See table below for details about these reclassifications.

The following table presents Dominion’s reclassifications out of AOCI by component: 
Details about AOCI components
Amounts reclassified from AOCI
Affected line item in the Consolidated Statements of Income
(millions)
 
 
Three Months Ended September 30, 2015
 
 
Deferred (gains) and losses on derivatives-hedging activities:
 
 
Commodity contracts
$
(87
)
Operating revenue
 
2

Purchased gas
Interest rate contracts
2

Interest and related charges
 
(83
)
 
Tax
30

Income tax expense
 
$
(53
)
 
Unrealized (gains) and losses on investment securities:
 
 
Realized (gain) loss on sale of securities
$
(18
)
Other income
Impairment
16

Other income
 
(2
)
 
Tax
—

Income tax expense
 
$
(2
)
 
Unrecognized pension and other postretirement benefit costs:
 
 
Prior service (credit) costs
$
(3
)
Other operations and maintenance
Actuarial (gains) losses
24

Other operations and maintenance
 
21

 
Tax
(7
)
Income tax expense
 
$
14

 
Three Months Ended September 30, 2014
 
 
Deferred (gains) and losses on derivatives-hedging activities:
 
 
Commodity contracts
$
(66
)
Operating revenue
 
3

Purchased gas
 
5

Electric fuel and other energy-related purchases
Interest rate contracts
5

Interest and related charges
 
(53
)
 
Tax
22

Income tax expense
 
$
(31
)
 
Unrealized (gains) and losses on investment securities:
 
 
Realized (gain) loss on sale of securities
$
(38
)
Other income
Impairment
4

Other income
 
(34
)
 
Tax
13

Income tax expense
 
$
(21
)
 
Unrecognized pension and other postretirement benefit costs:
 
 
Prior service (credit) costs
$
(4
)
Other operations and maintenance
Actuarial (gains) losses
18

Other operations and maintenance
 
14

 
Tax
(6
)
Income tax expense
 
$
8

 
Nine Months Ended September 30, 2015
 
 
Deferred (gains) and losses on derivatives-hedging activities:
 
 
Commodity contracts
$
(103
)
Operating revenue
 
9

Purchased gas
Interest rate contracts
7

Interest and related charges
 
(87
)
 
Tax
34

Income tax expense
 
$
(53
)
 
Unrealized (gains) and losses on investment securities:
 
 
Realized (gain) loss on sale of securities
$
(82
)
Other income
Impairment
27

Other income
 
(55
)
 
Tax
20

Income tax expense
 
$
(35
)
 
Unrecognized pension and other postretirement benefit costs:
 
 
Prior service (credit) costs
$
(9
)
Other operations and maintenance
Actuarial (gains) losses
73

Other operations and maintenance
 
64

 
Tax
(25
)
Income tax expense
 
$
39

 
Nine Months Ended September 30, 2014
 
 
Deferred (gains) and losses on derivatives-hedging activities:
 
 
Commodity contracts
$
175

Operating revenue
 
7

Purchased gas
 
(8
)
Electric fuel and other energy-related purchases
Interest rate contracts
11

Interest and related charges
 
185

 
Tax
(72
)
Income tax expense
 
$
113

 
Unrealized (gains) and losses on investment securities:
 
 
Realized (gain) loss on sale of securities
$
(71
)
Other income
Impairment
8

Other income
 
(63
)
 
Tax
24

Income tax expense
 
$
(39
)
 
Unrecognized pension and other postretirement benefit costs:
 
 
Prior service (credit) costs
$
(9
)
Other operations and maintenance
Actuarial (gains) losses
52

Other operations and maintenance
 
43

 
Tax
(18
)
Income tax expense
 
$
25

 


Dominion Gas
The following table presents Dominion Gas’ changes in AOCI by component, net of tax: 
 
Deferred gains and losses on derivatives-hedging activities
Unrecognized pension and other postretirement benefit costs
Total
(millions)
 
 
 
Three Months Ended September 30, 2015
 
 
 
Beginning balance
$
(22
)
$
(64
)
$
(86
)
Other comprehensive income before reclassifications: gains (losses)
3

—

3

Amounts reclassified from AOCI(1): (gains) losses
(2
)
1

(1
)
Net current-period other comprehensive income
1

1

2

Ending balance
$
(21
)
$
(63
)
$
(84
)
Three Months Ended September 30, 2014
 
 
 
Beginning balance
$
(16
)
$
(59
)
$
(75
)
Other comprehensive income before reclassifications: gains (losses)
(7
)
—

(7
)
Amounts reclassified from AOCI(1): (gains) losses
4

1

5

Net current-period other comprehensive income (loss)
(3
)
1

(2
)
Ending balance
$
(19
)
$
(58
)
$
(77
)
Nine Months Ended September 30, 2015
 
 
 
Beginning balance
$
(20
)
$
(66
)
$
(86
)
Other comprehensive income before reclassifications: gains (losses)
2

—

2

Amounts reclassified from AOCI(1): (gains) losses
(3
)
3

—

Net current-period other comprehensive income (loss)
(1
)
3

2

Ending balance
$
(21
)
$
(63
)
$
(84
)
Nine Months Ended September 30, 2014
 
 
 
Beginning balance
$
3

$
(61
)
$
(58
)
Other comprehensive income before reclassifications: gains (losses)
(33
)
—

(33
)
Amounts reclassified from AOCI(1): (gains) losses
11

3

14

Net current-period other comprehensive income (loss)
(22
)
3

(19
)
Ending balance
$
(19
)
$
(58
)
$
(77
)
(1)
See table below for details about these reclassifications.

The following table presents Dominion Gas' reclassifications out of AOCI by component: 
Details about AOCI components
Amounts reclassified from AOCI
Affected line item in the Consolidated Statements of Income
(millions)
 
 
Three Months Ended September 30, 2015
 
 
Deferred (gains) and losses on derivatives-hedging activities:
 
 
Commodity contracts
$
(3
)
Operating revenue
 
(3
)
 
Tax
1

Income tax expense
 
$
(2
)
 
Unrecognized pension and other postretirement benefit costs:
 
 
Actuarial (gains) losses
$
2

Other operations and maintenance
 
2

 
Tax
(1
)
Income tax expense
 
$
1

 
Three Months Ended September 30, 2014
 
 
Deferred (gains) and losses on derivatives-hedging activities:
 
 
Commodity contracts
$
1

Operating revenue
 
5

Purchased gas
 
6

 
Tax
(2
)
Income tax expense
 
$
4

 
Unrecognized pension and other postretirement benefit costs:
 
 
Actuarial (gains) losses
$
2

Other operations and maintenance
 
2

 
Tax
(1
)
Income tax expense
 
$
1

 
Nine Months Ended September 30, 2015
 
 
Deferred (gains) and losses on derivatives-hedging activities:
 
 
Commodity contracts
$
(4
)
Operating revenue
 
(4
)
 
Tax
1

Income tax expense
 
$
(3
)
 
Unrecognized pension and other postretirement benefit costs:
 
 
Actuarial (gains) losses
$
6

Other operations and maintenance
 
6

 
Tax
(3
)
Income tax expense
 
$
3

 
Nine Months Ended September 30, 2014
 
 
Deferred (gains) and losses on derivatives-hedging activities:
 
 
Commodity contracts
$
8

Operating revenue
 
10

Purchased gas
 
18

 
Tax
(7
)
Income tax expense
 
$
11

 
Unrecognized pension and other postretirement benefit costs:
 
 
Actuarial (gains) losses
$
5

Other operations and maintenance
 
5

 
Tax
(2
)
Income tax expense
 
$
3