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LONG-TERM AND SHORT-TERM DEBT (Tables)
9 Months Ended
Sep. 30, 2015
Short-term Debt [Line Items]  
Schedule of Line of Credit Facilities [Table Text Block]
SCANA, SCE&G (including Fuel Company) and PSNC Energy had available the following committed LOC, and had outstanding the following LOC advances, commercial paper, and LOC-supported letter of credit obligations: 
 
 
SCANA
 
SCE&G
 
PSNC Energy
Millions of dollars
 
September 30,
2015
 
December 31,
2014
 
September 30,
2015
 
December 31,
2014
 
September 30,
2015
 
December 31,
2014
Lines of credit:
 
 

 
 
 
 
 
 
 
 
 
 
Total committed long-term
 
$
300

 
$
300

 
$
1,400

 
$
1,400

 
$
100

 
$
100

Outstanding commercial paper
( 270 or fewer days)
 
$
14

 
$
179

 
$
234

 
$
709

 
$
16

 
$
30

Weighted average interest rate
 
0.66
%
 
0.54
%
 
0.44
%
 
0.52
%
 
0.45
%
 
0.65
%
Letters of credit supported by LOC
 
$
3

 
$
3

 
$
0.3

 
$
0.3

 

 

Available
 
$
283

 
$
118

 
$
1,166

 
$
691

 
$
84

 
$
70

SCEG  
Short-term Debt [Line Items]  
Schedule of Line of Credit Facilities [Table Text Block]
SCE&G (including Fuel Company) had available the following committed LOC, and had outstanding the following LOC advances, commercial paper, and LOC-supported letter of credit obligations:
Millions of dollars
 
September 30,
2015
 
December 31,
2014
Lines of credit:
 
 
 
 
Total committed long-term
 
$
1,400

 
$
1,400

Outstanding commercial paper (270 or fewer days)
 
$
234

 
$
709

Weighted average interest rate
 
0.44
%
 
0.52
%
Letters of credit supported by LOC
 
$
0.3

 
$
0.3

Available
 
$
1,166

 
$
691