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Segment Information (Details 2) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Operating segments information
Total assets	$ 8,858,989	$ 8,772,719
Reportable Segments
Operating segments information
Total assets	8,063,803	7,892,148
EQT Production
Operating segments information
Total assets	5,438,619	5,256,645
EQT Midstream
Operating segments information
Total assets	1,819,437	1,785,089
Distribution
Operating segments information
Total assets	805,747	850,414
Unallocated expenses
Operating segments information
Total assets	$ 795,186	$ 880,571

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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