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Acquisitions and Divestitures - Additional Information (Details) (USD $) |  |  | 12 Months Ended |  | 12 Months Ended | 1 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended | 1 Months Ended |  | 1 Months Ended |  | 1 Months Ended | 0 Months Ended | 12 Months Ended | 0 Months Ended | 3 Months Ended | 12 Months Ended |  | 1 Months Ended |
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2012 Atinum MidCon I, LLC and Repsol E&P USA, Inc. | Dec. 31, 2011 Atinum MidCon I, LLC and Repsol E&P USA, Inc. | Dec. 31, 2012 Atinum MidCon I, LLC | Dec. 31, 2012 Repsol E&P USA, Inc. | Dec. 31, 2010 2010 Divestitures | Aug. 31, 2010 Cana Shale | Dec. 31, 2010 Avalon Shale and Bone Spring reservoirs acre | Dec. 31, 2011 2011 Divestitures | Jul. 31, 2011 Assets of Wolfberry | Aug. 31, 2011 Assets of New Mexico | Nov. 30, 2011 East Texas | Jun. 30, 2012 Tertiary | Dec. 31, 2012 Mississippian Properties | Dec. 31, 2011 Mississippian Properties | Sep. 30, 2011 Mississippian Properties Atinum MidCon I, LLC acre | Dec. 31, 2012 Mississippian Properties Atinum MidCon I, LLC | Jan. 31, 2012 Mississippian Properties Repsol E&P USA, Inc. | Dec. 31, 2012 Mississippian Properties Repsol E&P USA, Inc. | Jan. 31, 2012 Mississippian Properties Repsol E&P USA, Inc. Mississippian formation in western Kansas acre | Jan. 31, 2012 Mississippian Properties Repsol E&P USA, Inc. Mississippian formation in northern Oklahoma and southern Kansas acre | Jul. 16, 2010 Arena Acquisition | Dec. 31, 2011 Arena Acquisition | Dec. 31, 2010 Arena Acquisition | Apr. 17, 2012 Dynamic Acquisition | Dec. 31, 2012 Dynamic Acquisition | Dec. 31, 2012 Dynamic Acquisition | Dec. 31, 2012 Gulf of Mexico Properties | Jun. 20, 2012 Gulf of Mexico Properties acre | Feb. 28, 2013 Permian Properties | Dec. 31, 2012 Permian Properties
Business Acquisitions and Dispositions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity interests acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  | 100.00% |  |  |  |  |  |  |
Shares of common stock issued in connection with acquisition for each outstanding share (in shares per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.7771 |  |  |  |  |  |  |  |  |  |
Cash paid in connection with acquisition for each outstanding share (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4.50 |  |  |  |  |  |  |  |  |  |
Issuance of common stock in acquisition (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 190,280,000 |  |  | 73,962,000 | [1] |  |  |  |  |  |
Cash consideration |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 177,900,000 |  |  | $ 680,000,000 | [1],[2] |  |  |  | $ 38,458,000 |  |
Purchase price of acquired entity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,400,000,000 |  |  | 1,235,229,000 | [1] |  |  |  |  |  |
SandRidge common stock price (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 6.55 |  |  | $ 7.33 | [1] |  |  |  |  |  |
Acquisition related costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 600,000 | 17,000,000 |  |  |  | 13,000,000 | 200,000 |  |  |
Revenue of acquiree since acquisition date |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 112,100,000 |  |  |  | 365,000,000 | 26,200,000 |  |  |
Earnings of acquiree since acquisition date |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 90,100,000 |  |  |  | 81,500,000 |  |  |  |
Gain (loss) on divestiture |  |  |  |  |  |  |  |  |  | 0 |  |  | 0 |  |  |  | 0 | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of oil and natural gas properties |  |  |  |  |  |  |  |  |  |  | 109,400,000 | 102,100,000 |  | 151,600,000 | 199,000,000 | 225,400,000 | 130,800,000 |  |  | 250,000,000 |  | 250,000,000 |  |  |  |  |  |  |  |  |  |  |  |  | 2,600,000,000 |
Net acres of non-core assets sold |  |  |  |  |  |  |  |  |  |  |  | 40,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Measurement period adjustments to the preliminary purchase price allocation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,800,000 |  |  |  |  |
Adjustments to deferred taxes and the valuation allowance as a result of measurement period adjustments to the preliminary purchase price allocation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,000,000 |  |  |  |  |
Oil and natural gas properties acquired, gross (in acres) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 184,000 |  |
Oil and natural gas properties acquired, net (in acres) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 103,000 |  |
Earnings on oil and gas properties |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 19,100,000 |  |  |
Restricted deposit | 255,000,000 |  | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 255,000,000
Cumulative proceeds from sale of working interest subject to drilling carry | 559,500,000 | [3] |  |  |  | 287,000,000 | [3] | 272,500,000 | [3] |  |  |  |  |  |  |  |  | 500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum amount acquirer will pay of SandRidge's drilling and completion costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000,000 |  |  | 250,000,000 |  | 750,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Number of net acres sold |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 113,000 |  |  |  | 250,000 | 114,000 |  |  |  |  |  |  |  |  |  |  |
Acquirer's share of Company portion of drilling and completion costs to be paid by acquirer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 200.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected term of drilling carry |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 years |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Drilling carry recorded as reduction of capital expenditures |  |  |  | $ 367,600,000 | $ 18,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | Consideration paid by the Company consisted of 74 million shares of SandRidge common stock and cash of approximately $680.0 million. The value of the stock consideration is based upon the closing price of $7.33 per share of SandRidge common stock on April 17, 2012, which was the closing date of the Dynamic Acquisition. Under the acquisition method of accounting, the purchase price is determined based on the total cash paid and the fair value of SandRidge common stock issued on the acquisition date.
[2] | Cash consideration paid, including amounts paid to retire Dynamic’s long-term debt, was funded through a portion of the net proceeds from the Company’s issuance of $750.0 million of unsecured 8.125% Senior Notes due 2022.
[3] | Includes amounts related to the drilling carry.

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