COMMITMENTS AND CONTINGENCIES ARO (Tables)

12 Months Ended

Dec. 31, 2015

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 AROs is as follows: 

Millions of dollars	2015			2014
Beginning balance	$	563		$	576
Liabilities incurred	—			3
Liabilities settled	(16		)	(6		)
Accretion expense	25			26
Revisions in estimated cash flows	(52		)	(36		)
Ending balance	$	520		$	563

SCE&G

Change in Asset Retirement Obligations [Line Items]

Change in Asset Retirement Obligations [Table Text Block]

follows:

Millions of dollars	2015			2014
Beginning balance	$	536		$	547
Liabilities incurred	—			3
Liabilities settled	(16		)	(6		)
Accretion expense	23			25
Revisions in estimated cash flows	(55		)	(33		)
Ending Balance	$	488		$	536