Significant Accounting Policies (Other Policies Textuals) (Details) (USD $)
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Mar. 31, 2014
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Dec. 31, 2013
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Mar. 31, 2013
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Other Assets, Noncurrent [Abstract] | |||
Goodwill | $ 3,821,600,000 | $ 401,700,000 | $ 401,700,000 |
Gas Balancing Payable, Current | 2,200,000 | ||
Gas Balancing Asset (Liability) | $ 2,300,000 |
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- Definition
The value of gas balancing asset or liability as of the end of the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Carrying value as of the balance sheet date of obligations incurred and payable to an underproduced working interest owner when an overproduced working interest owner has sold gas in excess of the party's ownership percentage. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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