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Regulatory Assets and Liabilities (Tables)
9 Months Ended
Sep. 30, 2016
Regulatory Assets and Liabilities Disclosure [Abstract]  
Schedule of Regulatory Assets
Regulatory assets and liabilities include the following:
 
September 30, 2016
December 31, 2015
(millions)
 
 
Dominion
 
 
Regulatory assets:
 
 
Deferred rate adjustment clause costs(1)
$
101

$
90

Deferred nuclear refueling outage costs(2)
60

75

Deferred cost of fuel used in electric generation(3)
3

111

Other
86

75

Regulatory assets-current(4)
250

351

Unrecognized pension and other postretirement benefit costs(5)
981

1,015

Derivatives(6)
366

110

Deferred rate adjustment clause costs(1)
271

295

PJM transmission rates(7)
192

192

Income taxes recoverable through future rates(8)
130

126

Other
203

127

Regulatory assets-non-current
2,143

1,865

Total regulatory assets
$
2,393

$
2,216

Regulatory liabilities:
 

 

Deferred cost of fuel used in electric generation(3)
$
62

$

PIPP(9)
26

46

Other
36

54

Regulatory liabilities-current(10)
124

100

Provision for future cost of removal and AROs(11)
1,412

1,120

Nuclear decommissioning trust(12)
882

804

Derivatives(6)
76

79

Deferred cost of fuel used in electric generation(3)
27

97

Other
200

185

Regulatory liabilities-non-current
2,597

2,285

Total regulatory liabilities
$
2,721

$
2,385

Virginia Power
 

 

Regulatory assets:
 

 

Deferred rate adjustment clause costs(1)
$
85

$
80

Deferred nuclear refueling outage costs(2)
60

75

Deferred cost of fuel used in electric generation(3)
3

111

Other
49

60

Regulatory assets-current
197

326

Derivatives(6)
366

110

PJM transmission rates(7)
192

192

Deferred rate adjustment clause costs(1)
176

213

Income taxes recoverable through future rates(8)
99

97

Other
64

55

Regulatory assets-non-current
897

667

Total regulatory assets
$
1,094

$
993

Regulatory liabilities:
 

 

Deferred cost of fuel used in electric generation(3)
$
62

$

Other
13

35

Regulatory liabilities-current
75

35

Provision for future cost of removal(11)
932

890

Nuclear decommissioning trust(12)
882

804

Derivatives(6)
76

79

Deferred cost of fuel used in electric generation(3)
27

97

Other
50

59

Regulatory liabilities-non-current
1,967

1,929

Total regulatory liabilities
$
2,042

$
1,964

Dominion Gas
 
 
Regulatory assets:
 

 

Deferred rate adjustment clause costs(1)
$
16

$
10

Other
6

13

Regulatory assets-current(4)
22

23

Unrecognized pension and other postretirement benefit costs(5)
275

282

Deferred rate adjustment clause costs(1)
91

82

Income taxes recoverable through future rates(8)
21

20

Other
82

65

Regulatory assets-non-current(13)
469

449

Total regulatory assets
$
491

$
472

Regulatory liabilities:
 

 

PIPP(9)
$
26

$
46

Other
13

9

Regulatory liabilities-current(10)
39

55

Provision for future cost of removal and AROs(11)
173

170

Other
44

31

Regulatory liabilities-non-current(14)
217

201

Total regulatory liabilities
$
256

$
256


(1)
Reflects deferrals under the electric transmission FERC formula rate and the deferral of costs associated with certain current and prospective rider projects for Virginia Power. Reflects deferrals of costs associated with certain current and prospective rider projects for Dominion Gas. See Note 12 for more information.
(2)
Legislation enacted in Virginia in April 2014 requires Virginia Power to defer operation and maintenance costs incurred in connection with the refueling of any nuclear-powered generating plant. These deferred costs will be amortized over the refueling cycle, not to exceed 18 months.
(3)
Primarily reflects deferred fuel expenses for the Virginia jurisdiction of Dominion's and Virginia Power's generation operations. See Note 12 for more information.
(4)
Current regulatory assets are presented in other current assets in Dominion's and Dominion Gas' Consolidated Balance Sheets.
(5)
Represents unrecognized pension and other postretirement employee benefit costs expected to be recovered through future rates generally over the expected remaining service period of plan participants by certain of Dominion's and Dominion Gas' rate-regulated subsidiaries.
(6)
For jurisdictions subject to cost-based rate regulation, changes in the fair value of derivative instruments result in the recognition of regulatory assets or regulatory liabilities as they are expected to be recovered from or refunded to customers.
(7)
Reflects amounts related to PJM transmission cost allocation matter. See Note 12 for more information.
(8)
Amounts to be recovered through future rates to pay income taxes that become payable when rate revenue is provided to recover AFUDC-equity and depreciation of property, plant and equipment for which deferred income taxes were not recognized for ratemaking purposes, including amounts attributable to tax rate changes.
(9)
Under PIPP, eligible customers can make reduced payments based on their ability to pay. The difference between the customer's total bill and the PIPP plan amount is deferred and collected or returned annually under the PIPP rate adjustment clause according to East Ohio tariff provisions.
(10)
Current regulatory liabilities are presented in other current liabilities in the Dominion's and Dominion Gas' Consolidated Balance Sheets.
(11)
Rates charged to customers by the Companies' regulated businesses include a provision for the cost of future activities to remove assets that are expected to be incurred at the time of retirement.
(12)
Primarily reflects a regulatory liability representing amounts collected from Virginia jurisdictional customers and placed in external trusts (including income, losses and changes in fair value thereon) for the future decommissioning of Virginia Power's utility nuclear generation stations, in excess of the related AROs.
(13)
Noncurrent regulatory assets are presented in other deferred charges and other assets in Dominion Gas' Consolidated Balance Sheets.
(14)
Noncurrent regulatory liabilities are presented in other deferred credits and other liabilities in Dominion Gas' Consolidated Balance Sheets.
Schedule of Regulatory Liabilities
Regulatory assets and liabilities include the following:
 
September 30, 2016
December 31, 2015
(millions)
 
 
Dominion
 
 
Regulatory assets:
 
 
Deferred rate adjustment clause costs(1)
$
101

$
90

Deferred nuclear refueling outage costs(2)
60

75

Deferred cost of fuel used in electric generation(3)
3

111

Other
86

75

Regulatory assets-current(4)
250

351

Unrecognized pension and other postretirement benefit costs(5)
981

1,015

Derivatives(6)
366

110

Deferred rate adjustment clause costs(1)
271

295

PJM transmission rates(7)
192

192

Income taxes recoverable through future rates(8)
130

126

Other
203

127

Regulatory assets-non-current
2,143

1,865

Total regulatory assets
$
2,393

$
2,216

Regulatory liabilities:
 

 

Deferred cost of fuel used in electric generation(3)
$
62

$

PIPP(9)
26

46

Other
36

54

Regulatory liabilities-current(10)
124

100

Provision for future cost of removal and AROs(11)
1,412

1,120

Nuclear decommissioning trust(12)
882

804

Derivatives(6)
76

79

Deferred cost of fuel used in electric generation(3)
27

97

Other
200

185

Regulatory liabilities-non-current
2,597

2,285

Total regulatory liabilities
$
2,721

$
2,385

Virginia Power
 

 

Regulatory assets:
 

 

Deferred rate adjustment clause costs(1)
$
85

$
80

Deferred nuclear refueling outage costs(2)
60

75

Deferred cost of fuel used in electric generation(3)
3

111

Other
49

60

Regulatory assets-current
197

326

Derivatives(6)
366

110

PJM transmission rates(7)
192

192

Deferred rate adjustment clause costs(1)
176

213

Income taxes recoverable through future rates(8)
99

97

Other
64

55

Regulatory assets-non-current
897

667

Total regulatory assets
$
1,094

$
993

Regulatory liabilities:
 

 

Deferred cost of fuel used in electric generation(3)
$
62

$

Other
13

35

Regulatory liabilities-current
75

35

Provision for future cost of removal(11)
932

890

Nuclear decommissioning trust(12)
882

804

Derivatives(6)
76

79

Deferred cost of fuel used in electric generation(3)
27

97

Other
50

59

Regulatory liabilities-non-current
1,967

1,929

Total regulatory liabilities
$
2,042

$
1,964

Dominion Gas
 
 
Regulatory assets:
 

 

Deferred rate adjustment clause costs(1)
$
16

$
10

Other
6

13

Regulatory assets-current(4)
22

23

Unrecognized pension and other postretirement benefit costs(5)
275

282

Deferred rate adjustment clause costs(1)
91

82

Income taxes recoverable through future rates(8)
21

20

Other
82

65

Regulatory assets-non-current(13)
469

449

Total regulatory assets
$
491

$
472

Regulatory liabilities:
 

 

PIPP(9)
$
26

$
46

Other
13

9

Regulatory liabilities-current(10)
39

55

Provision for future cost of removal and AROs(11)
173

170

Other
44

31

Regulatory liabilities-non-current(14)
217

201

Total regulatory liabilities
$
256

$
256


(1)
Reflects deferrals under the electric transmission FERC formula rate and the deferral of costs associated with certain current and prospective rider projects for Virginia Power. Reflects deferrals of costs associated with certain current and prospective rider projects for Dominion Gas. See Note 12 for more information.
(2)
Legislation enacted in Virginia in April 2014 requires Virginia Power to defer operation and maintenance costs incurred in connection with the refueling of any nuclear-powered generating plant. These deferred costs will be amortized over the refueling cycle, not to exceed 18 months.
(3)
Primarily reflects deferred fuel expenses for the Virginia jurisdiction of Dominion's and Virginia Power's generation operations. See Note 12 for more information.
(4)
Current regulatory assets are presented in other current assets in Dominion's and Dominion Gas' Consolidated Balance Sheets.
(5)
Represents unrecognized pension and other postretirement employee benefit costs expected to be recovered through future rates generally over the expected remaining service period of plan participants by certain of Dominion's and Dominion Gas' rate-regulated subsidiaries.
(6)
For jurisdictions subject to cost-based rate regulation, changes in the fair value of derivative instruments result in the recognition of regulatory assets or regulatory liabilities as they are expected to be recovered from or refunded to customers.
(7)
Reflects amounts related to PJM transmission cost allocation matter. See Note 12 for more information.
(8)
Amounts to be recovered through future rates to pay income taxes that become payable when rate revenue is provided to recover AFUDC-equity and depreciation of property, plant and equipment for which deferred income taxes were not recognized for ratemaking purposes, including amounts attributable to tax rate changes.
(9)
Under PIPP, eligible customers can make reduced payments based on their ability to pay. The difference between the customer's total bill and the PIPP plan amount is deferred and collected or returned annually under the PIPP rate adjustment clause according to East Ohio tariff provisions.
(10)
Current regulatory liabilities are presented in other current liabilities in the Dominion's and Dominion Gas' Consolidated Balance Sheets.
(11)
Rates charged to customers by the Companies' regulated businesses include a provision for the cost of future activities to remove assets that are expected to be incurred at the time of retirement.
(12)
Primarily reflects a regulatory liability representing amounts collected from Virginia jurisdictional customers and placed in external trusts (including income, losses and changes in fair value thereon) for the future decommissioning of Virginia Power's utility nuclear generation stations, in excess of the related AROs.
(13)
Noncurrent regulatory assets are presented in other deferred charges and other assets in Dominion Gas' Consolidated Balance Sheets.
(14)
Noncurrent regulatory liabilities are presented in other deferred credits and other liabilities in Dominion Gas' Consolidated Balance Sheets.