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New And Significant Accounting Policies (Tables)
 9 Months Ended
Sep. 30, 2013
Components Of Net Periodic Benefit Cost
Pension and Other Postretirement Benefits
 
 
 
Pension Benefits
 
Other Benefits
 
Three Months Ended September 30,
(in millions)
2013
 
2012
 
2013
 
2012
Service cost for benefits earned
$
121
 
$
100
 
$
14
 
$
14
Interest cost
 
158
 
 
165
 
 
19
 
 
21
Expected return on plan assets
 
(162
 ) 
 
(150
 ) 
 
(20
 ) 
 
(19
)
Amortization of transition obligation
 
-
 
 
-
 
 
-
 
 
6
Amortization of prior service cost
 
5
 
 
5
 
 
6
 
 
7
Amortization of net actuarial loss
 
28
 
 
29
 
 
1
 
 
1
Net periodic benefit cost
 
150
 
 
149
 
 
20
 
 
30
Less: transfer to regulatory account (1)
 
(66
 ) 
 
(75
 ) 
 
-
 
 
-
Total
$
84
 
$
74
 
$
20
 
$
30
 
 
 
 
 
 
 
 
 
 
 
 
(1)      The Utility recorded these amounts to a regulatory account since they are probable of recovery from customers in futures rates.
 
 
 
Pension Benefits
 
Other Benefits
 
Nine Months Ended September 30,
(in millions)
2013
 
2012
 
2013
 
2012
Service cost for benefits earned
$
351
 
$
297
 
$
40
 
$
37
Interest cost
 
470
 
 
494
 
 
56
 
 
63
Expected return on plan assets
 
(487
 ) 
 
(449
 ) 
 
(60
 ) 
 
(58
)
Amortization of transition obligation
 
-
 
 
-
 
 
-
 
 
18
Amortization of prior service cost
 
15
 
 
15
 
 
17
 
 
19
Amortization of net actuarial loss
 
83
 
 
92
 
 
4
 
 
4
Net periodic benefit cost
 
432
 
 
449
 
 
57
 
 
83
Less: transfer to regulatory account (1)
 
(179
 ) 
 
(225
 ) 
 
-
 
 
-
Total
$
253
 
$
224
 
$
57
 
$
83
 
 
 
 
 
 
 
 
 
 
 
 
 (1) The Utility recorded these amounts to a regulatory account since they are probable of recovery from customers in future rates.
Reclassification Out Of Accumulated Other Comprehensive Income
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Pension
 
Other
 
Other
 
 
 
 
Benefits
 
Benefits
 
Investments
 
Total
(in millions, net of income tax)
Three Months Ended September 30, 2013
Beginning balance
$
(28
 ) 
$
(69
 ) 
$
26
 
$
(71
)
Other comprehensive income before reclassifications
 
(20
 ) 
 
-
 
 
(3
 ) 
 
(23
)
Amounts reclassified from other comprehensive income:
 
 
 
 
 
 
 
 
 
 
 
      Amortization of prior service cost (1)
 
3
 
 
3
 
 
-
 
 
6
      Amortization of net actuarial loss (1)
 
17
 
 
1
 
 
-
 
 
18
Net current period other comprehensive income (loss)
 
-
 
 
4
 
 
(3)
 
 
1
Ending balance
$
(28)
 
$
(65)
 
$
23
 
$
(70)
 
 
 
 
 
 
 
 
 
 
 
 
 (1) These components are included in the computation of net periodic pension and other postretirement costs.  (See the “Pension and Other Postretirement Benefits” table above for additional details.)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Pension
 
Other
 
Other
 
 
 
 
Benefits
 
Benefits
 
Investments
 
Total
(in millions, net of income tax)
Nine Months Ended September 30, 2013
Beginning balance
$
(28
 ) 
$
(77
 ) 
$
4
 
$
(101
)
Other comprehensive income before reclassifications
 
(58
 ) 
 
-
 
 
19
 
 
(39
)
Amounts reclassified from other comprehensive income:
 
 
 
 
 
 
 
 
 
 
 
      Amortization of prior service cost (1)
 
9
 
 
9
 
 
-
 
 
18
      Amortization of net actuarial loss (1)
 
49
 
 
3
 
 
-
 
 
52
Net current period other comprehensive income (loss)
 
-
 
 
12
 
 
19
 
 
31
Ending balance
$
(28)
 
$
(65)
 
$
23
 
$
(70)
 
 
 
 
 
 
 
 
 
 
 
 
 (1) These components are included in the computation of net periodic pension and other postretirement costs.  (See the “Pension and Other Postretirement Benefits” table above for additional details.)