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Unaudited Condensed Consolidating Statements of Cash Flows of SandRidge Energy, Inc. and Wholly Owned Subsidiary Guarantors and Non-Guarantors (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2013 | Mar. 31, 2012
Schedule of Condensed Consolidating Statement of Cash Flows [Line Items] |  |
Net cash (used in) provided by operating activities | $ 121,457 | $ 230,910
Cash flows from investing activities |  |
Capital expenditures for property, plant and equipment | (421,876) | (601,841)
Proceeds from sale of assets | 2,559,374 | 269,008
Other | (5,048) | (10,511)
Net cash provided by (used in) investing activities | 2,132,450 | (343,344)
Cash flows from financing activities |  |
Repayments of borrowings | (1,115,500) | (257)
Proceeds from the sale of royalty trust units | 0 | 98,849
Premium on debt redemption | (61,997) | 0
Other | (77,443) | (66,254)
Net cash (used in) provided by financing activities | (1,254,940) | 32,595
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS | 998,967 | (79,839)
CASH AND CASH EQUIVALENTS, beginning of year | 309,766 | 207,681
CASH AND CASH EQUIVALENTS, end of period | 1,308,733 | 127,842
Parent |  |
Schedule of Condensed Consolidating Statement of Cash Flows [Line Items] |  |
Net cash (used in) provided by operating activities | 2,192,056 | (48,637)
Cash flows from investing activities |  |
Capital expenditures for property, plant and equipment | 0 | 0
Proceeds from sale of assets | 0 | 0
Other | 0 | 0
Net cash provided by (used in) investing activities | 0 | 0
Cash flows from financing activities |  |
Repayments of borrowings | (1,115,500) |
Proceeds from the sale of royalty trust units |  | 0
Premium on debt redemption | (61,997) |
Other | (29,395) | (31,623)
Net cash (used in) provided by financing activities | (1,206,892) | (31,623)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS | 985,164 | (80,260)
CASH AND CASH EQUIVALENTS, beginning of year | 300,228 | 204,015
CASH AND CASH EQUIVALENTS, end of period | 1,285,392 | 123,755
Guarantors |  |
Schedule of Condensed Consolidating Statement of Cash Flows [Line Items] |  |
Net cash (used in) provided by operating activities | (2,142,481) | 202,554
Cash flows from investing activities |  |
Capital expenditures for property, plant and equipment | (421,876) | (572,334)
Proceeds from sale of assets | 2,559,371 | 267,001
Other | 16,947 | 56,658
Net cash provided by (used in) investing activities | 2,154,442 | (248,675)
Cash flows from financing activities |  |
Repayments of borrowings | 0 |
Proceeds from the sale of royalty trust units |  | 0
Premium on debt redemption | 0 |
Other | 3,208 | 45,973
Net cash (used in) provided by financing activities | 3,208 | 45,973
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS | 15,169 | (148)
CASH AND CASH EQUIVALENTS, beginning of year | 922 | 437
CASH AND CASH EQUIVALENTS, end of period | 16,091 | 289
Non-Guarantors |  |
Schedule of Condensed Consolidating Statement of Cash Flows [Line Items] |  |
Net cash (used in) provided by operating activities | 68,705 | 78,163
Cash flows from investing activities |  |
Capital expenditures for property, plant and equipment | 0 | (29,507)
Proceeds from sale of assets | 3 | 2,007
Other | 0 | 1
Net cash provided by (used in) investing activities | 3 | (27,499)
Cash flows from financing activities |  |
Repayments of borrowings | 0 |
Proceeds from the sale of royalty trust units |  | 0
Premium on debt redemption | 0 |
Other | (70,074) | (50,095)
Net cash (used in) provided by financing activities | (70,074) | (50,095)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS | (1,366) | 569
CASH AND CASH EQUIVALENTS, beginning of year | 8,616 | 3,229
CASH AND CASH EQUIVALENTS, end of period | 7,250 | 3,798
Eliminations |  |
Schedule of Condensed Consolidating Statement of Cash Flows [Line Items] |  |
Net cash (used in) provided by operating activities | 3,177 | (1,170)
Cash flows from investing activities |  |
Capital expenditures for property, plant and equipment | 0 | 0
Proceeds from sale of assets | 0 | 0
Other | (21,995) | (67,170)
Net cash provided by (used in) investing activities | (21,995) | (67,170)
Cash flows from financing activities |  |
Repayments of borrowings | 0 |
Proceeds from the sale of royalty trust units |  | 98,849
Premium on debt redemption | 0 |
Other | 18,818 | (30,509)
Net cash (used in) provided by financing activities | 18,818 | 68,340
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS | 0 | 0
CASH AND CASH EQUIVALENTS, beginning of year | 0 | 0
CASH AND CASH EQUIVALENTS, end of period | $ 0 | $ 0

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