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RATE AND OTHER REGULATORY MATTERS (Tables)
6 Months Ended
Jun. 30, 2015
Regulatory Assets  
Demand reduction programs [Table Text Block]
Year
 
Effective
 
Amount
2015
 
First billing cycle of May
 
$
32.0
 million
2014
 
First billing cycle of May
 
$
15.4
 million
2013
 
First billing cycle of May
 
$
16.9
 million
Schedule of Changes in Electric Rate BLRA [Table Text Block]
Year
 
Action
 
Amount
2014
 
2.8
%
Increase
 
$
66.2
 million
2013
 
2.9
%
Increase
 
$
67.2
 million
Schedule of Changes in Gas Rate RSA [Table Text Block]
Year
 
Action
 
Amount
2014
 
0.6
%
Decrease
 
$
2.6
 million
2013
 
  No change
 
-
Schedule of Regulatory Assets [Table Text Block]
.
Millions of dollars
 
June 30,
2015
 
December 31,
2014
Regulatory Assets:
 
 

 
 

Accumulated deferred income taxes
 
$
283

 
$
284

Under-collections - electric fuel adjustment clause
 

 
20

Environmental remediation costs
 
39

 
40

AROs and related funding
 
373

 
366

Franchise agreements
 
24

 
26

Deferred employee benefit plan costs
 
332

 
350

Planned major maintenance
 

 
2

Deferred losses on interest rate derivatives
 
455

 
453

Deferred pollution control costs
 
35

 
36

Unrecovered plant
 
131

 
137

DSM Programs
 
59

 
56

Carrying costs on deferred tax assets related to nuclear construction
 
13

 
9

Pipeline integrity management costs
 
13

 
9

Other
 
41

 
35

Total Regulatory Assets
 
$
1,798

 
$
1,823

Schedule of Regulatory Liabilities [Table Text Block]
Regulatory Liabilities:
 
 

 
 

Accumulated deferred income taxes
 
$
21

 
$
22

Asset removal costs
 
720

 
703

Storm damage reserve
 
6

 
6

Deferred gains on interest rate derivatives
 
123

 
82

Planned major maintenance
 
15

 

Other
 

 
1

Total Regulatory Liabilities
 
$
885

 
$
814

SCEG  
Regulatory Assets  
Demand reduction programs [Table Text Block]
Year
 
Effective
 
Amount
2015
 
First billing cycle of May
 
$
32.0
 million
2014
 
First billing cycle of May
 
$
15.4
 million
2013
 
First billing cycle of May
 
$
16.9
 million
Schedule of Changes in Electric Rate BLRA [Table Text Block]
Year
 
Action
 
Amount
2014
 
2.8
%
Increase
 
$
66.2
 million
2013
 
2.9
%
Increase
 
$
67.2
 million
Schedule of Changes in Gas Rate RSA [Table Text Block]
Year
 
Action
 
Amount
2014
 
0.6
%
Decrease
 
$
2.6
 million
2013
 
  No change
 
-
Schedule of Regulatory Assets [Table Text Block]
Millions of dollars
 
June 30,
2015
 
December 31,
2014
Regulatory Assets:
 
 

 
 

Accumulated deferred income taxes
 
$
277

 
$
278

Under collections – electric fuel adjustment clause
 

 
20

Environmental remediation costs
 
35

 
36

AROs and related funding
 
353

 
347

Franchise agreements
 
24

 
26

Deferred employee benefit plan costs
 
300

 
310

Planned major maintenance
 

 
2

Deferred losses on interest rate derivatives
 
455

 
453

Deferred pollution control costs
 
35

 
36

Unrecovered plant
 
131

 
137

DSM Programs
 
59

 
56

Carrying costs on deferred tax assets related to nuclear construction
 
13

 
9

Other
 
42

 
35

Total Regulatory Assets
 
$
1,724

 
$
1,745

Schedule of Regulatory Liabilities [Table Text Block]
Regulatory Liabilities:
 
 
 
 
Accumulated deferred income taxes
 
$
16

 
$
17

Asset removal costs
 
514

 
505

Storm damage reserve
 
6

 
6

Deferred gains on interest rate derivatives
 
123

 
82

Planned major maintenance
 
15

 

Total Regulatory Liabilities
 
$
674

 
$
610