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Variable Interest Entities - Royalty Trusts - Assets and Liabilities Included in Unaudited Condensed Consolidated Balance Sheets (Parenthetical) (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Variable Interest Entity    
Cumulative full cost ceiling limitation impairment $ 3,700.0sd_OilAndGasPropertyCumulativeImpairmentBasedOnCeilingTestCalculation $ 3,500.0sd_OilAndGasPropertyCumulativeImpairmentBasedOnCeilingTestCalculation
Royalty Trusts    
Variable Interest Entity    
Reserves for expenses 3.0sd_ReservesForExpenses
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= sd_RoyaltyTrustMember		 3.0sd_ReservesForExpenses
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= sd_RoyaltyTrustMember
Cumulative full cost ceiling limitation impairment $ 42.3sd_OilAndGasPropertyCumulativeImpairmentBasedOnCeilingTestCalculation
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= sd_RoyaltyTrustMember		 $ 0sd_OilAndGasPropertyCumulativeImpairmentBasedOnCeilingTestCalculation
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= sd_RoyaltyTrustMember