Condensed Consolidating Financial Information (Schedule Of Condensed Consolidated Balance Sheets) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets	$ 147,716	$ 207,513
Property and equipment	1,027,532	1,029,058
Investment in subsidiaries (equity method)	0	0
Other assets	133,961	145,217
Total assets	1,309,209	1,381,788
Current liabilities	124,243	167,791
Long-term liabilities	2,387,898	2,346,794
Stockholders' equity	(1,202,932)	(1,132,797)
Total liabilities and stockholders' equity	1,309,209	1,381,788
Quicksilver Resources Inc. [Member]
Current assets	205,156	261,130
Property and equipment	631,481	621,073
Investment in subsidiaries (equity method)	(199,396)	(191,725)
Other assets	335,598	346,972
Total assets	972,839	1,037,450
Current liabilities	213,212	255,678
Long-term liabilities	1,962,558	1,914,568
Stockholders' equity	(1,202,931)	(1,132,796)
Total liabilities and stockholders' equity	972,839	1,037,450
Restricted Guarantor Subsidiaries [Member]
Current assets	109,951	105,695
Property and equipment	16,314	20,007
Investment in subsidiaries (equity method)	0	0
Other assets	0	0
Total assets	126,265	125,702
Current liabilities	112,512	112,133
Long-term liabilities	19,242	19,242
Stockholders' equity	(5,489)	(5,673)
Total liabilities and stockholders' equity	126,265	125,702
Restricted Non-Guarantor Subsidiaries [Member]
Current assets	67,481	76,088
Property and equipment	291,083	296,462
Investment in subsidiaries (equity method)	(31,143)	(42,883)
Other assets	41,983	41,865
Total assets	369,404	371,532
Current liabilities	32,234	33,475
Long-term liabilities	518,332	524,107
Stockholders' equity	(181,162)	(186,050)
Total liabilities and stockholders' equity	369,404	371,532
Restricted Subsidiary Eliminations [Member]
Current assets	(221,780)	(222,586)
Property and equipment	0	0
Investment in subsidiaries (equity method)	199,396	191,725
Other assets	(243,620)	(243,620)
Total assets	(266,004)	(274,481)
Current liabilities	(221,780)	(222,586)
Long-term liabilities	(243,620)	(243,620)
Stockholders' equity	199,396	191,725
Total liabilities and stockholders' equity	(266,004)	(274,481)
Quicksilver And Restricted Subsidiaries [Member]
Current assets	160,808	220,327
Property and equipment	938,878	937,542
Investment in subsidiaries (equity method)	(31,143)	(42,883)
Other assets	133,961	145,217
Total assets	1,202,504	1,260,203
Current liabilities	136,178	178,700
Long-term liabilities	2,256,512	2,214,297
Stockholders' equity	(1,190,186)	(1,132,794)
Total liabilities and stockholders' equity	1,202,504	1,260,203
Unrestricted Non-Guarantor Subsidiaries [Member]
Current assets	13,962	13,250
Property and equipment	0	0
Investment in subsidiaries (equity method)	(31,143)	(42,905)
Other assets	0	0
Total assets	(17,181)	(29,655)
Current liabilities	13,941	13,230
Long-term liabilities	0	0
Stockholders' equity	(31,122)	(42,885)
Total liabilities and stockholders' equity	(17,181)	(29,655)
Fortune Creek [Member]
Current assets	826	391
Property and equipment	88,654	91,516
Investment in subsidiaries (equity method)	0	0
Other assets	0	0
Total assets	89,480	91,907
Current liabilities	2,004	2,316
Long-term liabilities	1,572	1,585
Stockholders' equity	85,904	88,006
Total liabilities and stockholders' equity	89,480	91,907
Consolidating Eliminations [Member]
Current assets	(27,880)	(26,455)
Property and equipment	0	0
Investment in subsidiaries (equity method)	62,286	85,788
Other assets	0	0
Total assets	34,406	59,333
Current liabilities	(27,880)	(26,455)
Long-term liabilities	129,814	130,912
Stockholders' equity	(67,528)	(45,124)
Total liabilities and stockholders' equity	$ 34,406	$ 59,333