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Asset Retirement Obligations (AROs) (Tables)
 12 Months Ended
Dec. 31, 2012
Asset Retirement Obligation [Abstract]  
Impact Of The Revisions On Asset Retirement Obligation
The changes to the ARO liabilities for PSEG, Power and PSE&G during 2011 and 2012 are presented in the following table:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PSEG
 
Power
 
PSE&G
 
Other
 
 
 
 
Millions
 
 
ARO Liability as of January 1, 2011
 
$
461

 
$
242

 
$
216

 
$
3

 
 
Liabilities Settled
 
(6
)
 
(1
)
 
(5
)
 
—

 
 
Liabilities Incurred
 
2

 
—

 
2

 
—

 
 
Accretion Expense
 
19

 
18

 
—

 
1

 
 
Accretion Expense Deferred and Recovered in Rate Base (A)
 
13

 
—

 
13

 
—

 
 
ARO Liability as of December 21, 2011
 
$
489

 
$
259

 
$
226

 
$
4

 
 
Liabilities Settled
 
(5
)
 
(1
)
 
(5
)
 
1

 
 
Liabilities Incurred
 
11

 
1

 
7

 
3

 
 
Accretion Expense
 
21

 
21

 
—

 
—

 
 
Accretion Expense Deferred and Recovered in Rate Base (A)
 
14

 
—

 
14

 
—

 
 
Revisions to Present Values of Estimated Cash Flows
 
97

 
89

 
8

 
—

 
 
ARO Liability as of December 31, 2012
 
$
627

 
$
369

 
$
250

 
$
8

 
 
 
 
 
 
 
 
 
 
 
 
(A)
Not reflected as expense in Consolidated Statements of Operations