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COMMITMENTS AND CONTINGENCIES ARO (Tables)
 12 Months Ended
Dec. 31, 2013
Change in Asset Retirement Obligations [Line Items]  
Change in Asset Retirement Obligations [Table Text Block]
 
A reconciliation of the beginning and ending aggregate carrying amount of asset retirement obligations is as follows: 
Millions of dollars
 
2013
 
2012
Beginning balance
 
$
561

 
$
473

Liabilities incurred
 
6

 
—

Liabilities settled
 
(4
)
 
(5
)
Accretion expense
 
25

 
24

Revisions in estimated cash flows
 
(12
)
 
69

Ending balance
 
$
576

 
$
561
SCE&G
  
Change in Asset Retirement Obligations [Line Items]  
Change in Asset Retirement Obligations [Table Text Block]
follows:
Millions of dollars
 
2013
 
2012
Beginning balance
 
$
535

 
$
450

Liabilities incurred
 
5

 
—

Liabilities settled
 
(4
)
 
(5
)
Accretion expense
 
24

 
23

Revisions in estimated cash flows
 
(13
)
 
67

Ending Balance
 
$
547

 
$
535