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Variable Interest Entities - Royalty Trusts - Common and Subordinated Units Outstanding (Details)
 3 Months Ended
Mar. 31, 2015
Mississippian Trust I  
Variable Interest Entity  
Total outstanding common units (in shares) 28,000,000sd_RoyaltyTrustCommonUnits
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= sd_SandRidgeMississippianTrustIMember		 [1]
Total outstanding subordinated units (in shares) 0sd_RoyaltyTrustSubordinatedUnits
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= sd_SandRidgeMississippianTrustIMember		 [2]
Permian Trust  
Variable Interest Entity  
Total outstanding common units (in shares) 39,375,000sd_RoyaltyTrustCommonUnits
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= sd_SandRidgePermianTrustMember
Total outstanding subordinated units (in shares) 13,125,000sd_RoyaltyTrustSubordinatedUnits
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= sd_SandRidgePermianTrustMember		 [2]
Mississippian Trust II  
Variable Interest Entity  
Total outstanding common units (in shares) 37,293,750sd_RoyaltyTrustCommonUnits
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= sd_SandRidgeMississippianTrustIiMember
Total outstanding subordinated units (in shares) 12,431,250sd_RoyaltyTrustSubordinatedUnits
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= sd_SandRidgeMississippianTrustIiMember		 [2]
[1] The Mississippian Trust I’s previously outstanding subordinated units, all of which were held by SandRidge, converted to common units on July 1, 2014.
[2] All outstanding subordinated units are owned by SandRidge.