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Variable Interest Entities - Grey Ranch, L.P. - Assets and Liabilities Included in Unaudited Condensed Consolidated Balance Sheets (Detail) (USD $)
Mar. 31, 2014
Dec. 31, 2013
Mar. 31, 2013
Dec. 31, 2012
Variable Interest Entity        
Cash and cash equivalents $ 1,179,644,000us-gaap_CashAndCashEquivalentsAtCarryingValue $ 814,663,000us-gaap_CashAndCashEquivalentsAtCarryingValue $ 1,308,733,000us-gaap_CashAndCashEquivalentsAtCarryingValue $ 309,766,000us-gaap_CashAndCashEquivalentsAtCarryingValue
Accounts receivable, net 293,765,000us-gaap_AccountsReceivableNetCurrent 349,218,000us-gaap_AccountsReceivableNetCurrent    
Prepaid expenses 13,567,000us-gaap_PrepaidExpenseCurrent 39,253,000us-gaap_PrepaidExpenseCurrent    
Other current assets 29,967,000us-gaap_OtherAssetsCurrent 25,910,000us-gaap_OtherAssetsCurrent    
Total current assets 1,525,945,000us-gaap_AssetsCurrent 1,241,823,000us-gaap_AssetsCurrent    
Other property, plant and equipment, net 559,342,000us-gaap_PropertyPlantAndEquipmentNet 566,222,000us-gaap_PropertyPlantAndEquipmentNet    
Accounts payable and accrued expenses 590,085,000us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent [1] 812,488,000us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent    
Grey Ranch Plant, L.P        
Variable Interest Entity        
Cash and cash equivalents   132,000us-gaap_CashAndCashEquivalentsAtCarryingValue
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= sd_GreyRanchLPMember		    
Accounts receivable, net   16,000us-gaap_AccountsReceivableNetCurrent
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= sd_GreyRanchLPMember		    
Prepaid expenses   32,000us-gaap_PrepaidExpenseCurrent
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= sd_GreyRanchLPMember		    
Other current assets   109,000us-gaap_OtherAssetsCurrent
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= sd_GreyRanchLPMember		    
Total current assets   289,000us-gaap_AssetsCurrent
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= sd_GreyRanchLPMember		    
Other property, plant and equipment, net   1,163,000us-gaap_PropertyPlantAndEquipmentNet
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= sd_GreyRanchLPMember		    
Total assets   1,452,000us-gaap_VariableInterestEntityConsolidatedCarryingAmountAssets
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= sd_GreyRanchLPMember		    
Accounts payable and accrued expenses   129,000us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= sd_GreyRanchLPMember		    
Total liabilities   $ 129,000us-gaap_VariableInterestEntityConsolidatedCarryingAmountLiabilities
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= sd_GreyRanchLPMember		    
[1] Guarantor and Consolidated accounts payable and accrued expenses have been restated to reflect accrual of the CO2 delivery shortfall penalty. See Note 2.