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Oil and Natural Gas Properties (Tables) (Linn Energy, LLC [Member])
 3 Months Ended 12 Months Ended
Mar. 31, 2013
Dec. 31, 2012
Linn Energy, LLC [Member]
    
Reserve Quantities [Line Items]    
Capitalized Costs Related to Oil, Natural Gas and NGL Production Activities
Aggregate capitalized costs related to oil, natural gas and NGL production activities with applicable accumulated depletion and amortization are presented below:
 
March 31,
2013
 
December 31,
2012
 
(in thousands)
Proved properties:
 
 
 
Leasehold acquisition
$
8,464,014

 
$
8,603,888

Development
2,707,884

 
2,553,127

Unproved properties
374,202

 
454,315

 
11,546,100

 
11,611,330

Less accumulated depletion and amortization
(2,174,273
)
 
(2,025,656
)
 
$
9,371,827

 
$
9,585,674
Aggregate capitalized costs related to oil, natural gas and NGL production activities with applicable accumulated depletion and amortization are presented below:
 
 
December 31,
 
 
2012
 
2011
 
 
(in thousands)
Proved properties:
 
 
 
 
Leasehold acquisition
 
$
8,603,888

 
$
6,040,239

Development
 
2,553,127

 
1,484,486

Unproved properties
 
454,315

 
310,925

 
 
11,611,330

 
7,835,650

Less accumulated depletion and amortization
 
(2,025,656
)
 
(1,033,617
)
 
 
$
9,585,674

 
$
6,802,033