CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) shares in Millions, $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Common Stock, Shares, Outstanding	142.9	142.7
Public Utilities, Property, Plant and Equipment, Net	$ 12,591	$ 12,232
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	121	122
Allowance for Doubtful Accounts Receivable, Current	6	7
Write-down, Goodwill	230	230
Assets, Current	1,289	2,145
Regulated Entity, Other Assets, Noncurrent	$ 2,014	$ 2,003
SCEG
Common Stock, Shares, Outstanding	40.3	40.3
Public Utilities, Property, Plant and Equipment, Net	$ 11,111	$ 10,783
Allowance for Doubtful Accounts Receivable, Current	3	4
Assets, Current	945	1,246
Regulated Entity, Other Assets, Noncurrent	1,917	1,896
SCEG | Variable Interest Entity, Primary Beneficiary [Member]
Public Utilities, Property, Plant and Equipment, Net	711	675
Assets, Current	122	158
Regulated Entity, Other Assets, Noncurrent	$ 48	$ 50