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Asset Retirement Obligations (Tables) (Linn Energy, LLC [Member])
 3 Months Ended 12 Months Ended
Mar. 31, 2013
Dec. 31, 2012
Linn Energy, LLC [Member]
    
Asset Retirement Obligations Reconciliation
The following presents a reconciliation of the asset retirement obligations (in thousands):
Asset retirement obligations at December 31, 2012
$
151,974

Liabilities added from drilling
590

Current year accretion expense
2,764

Settlements
(1,981
)
Revision of estimates
(269
)
Asset retirement obligations at March 31, 2013
$
153,078
The following presents a reconciliation of the Company’s asset retirement obligations:
 
 
December 31,
 
 
2012
 
2011
 
 
(in thousands)
 
 
 
 
 
Asset retirement obligations at beginning of year
 
$
71,142

 
$
42,945

Liabilities added from acquisitions
 
63,663

 
19,853

Liabilities added from drilling
 
1,799

 
1,277

Current year accretion expense
 
8,550

 
4,140

Settlements
 
(3,640
)
 
(2,218
)
Revision of estimates
 
10,460

 
5,145

Asset retirement obligations at end of year
 
$
151,974

 
$
71,142