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Introduction (Tables)
6 Months Ended
Jun. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Asset Retirement Obligations
As of June 30, 2015, details of the AROs, including those related to the CCR Rule, included in Southern Company's and the traditional operating companies' Condensed Balance Sheets herein were as follows:
 
Southern Company
 
Alabama Power
 
Georgia Power
 
Gulf
Power
 
Mississippi Power
 
(in millions)
Balance at beginning of year
$
2,201
 
 
$
829
 
 
$
1,255
 
 
$
17
 
 
$
48
 
Liabilities incurred
612
 
 
401
 
 
 
 
71
 
 
97
 
Liabilities settled
(10
)
 
(1
)
 
(9
)
 
 
 
 
Accretion
53
 
 
23
 
 
28
 
 
 
 
1
 
Cash flow revisions
58
 
 
 
 
82
 
 
4
 
 
2
 
Balance at end of period
$
2,914
 
 
$
1,252
 
 
$
1,356
 
 
$
92
 
 
$
148