Condensed Consolidating Financial Information (Schedule Of Condensed Consolidated Balance Sheets) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current assets	$ 180,116	$ 393,960
Property and equipment	815,331	860,805
Investment in subsidiaries (equity method)	0	0
Other assets	63,600	114,961
Total assets	1,059,047	1,369,726
Current liabilities	139,949	134,797
Long-term liabilities	2,029,014	2,240,899
Stockholders' equity	(1,109,916)	(1,005,970)
Total liabilities and stockholders' equity	1,059,047	1,369,726
Quicksilver Resources Inc. [Member]
Current assets	193,099	349,586
Property and equipment	405,919	455,822
Investment in subsidiaries (equity method)	(226,530)	(217,852)
Other assets	462,130	472,792
Total assets	834,618	1,060,348
Current liabilities	132,097	124,275
Long-term liabilities	1,812,436	1,942,043
Stockholders' equity	(1,109,915)	(1,005,970)
Total liabilities and stockholders' equity	834,618	1,060,348
Restricted Guarantor Subsidiaries [Member]
Current assets	12,274	10,735
Property and equipment	14,875	15,486
Investment in subsidiaries (equity method)	0	0
Other assets	0	0
Total assets	27,149	26,221
Current liabilities	13,000	12,210
Long-term liabilities	19,242	19,242
Stockholders' equity	(5,093)	(5,231)
Total liabilities and stockholders' equity	27,149	26,221
Restricted Non-Guarantor Subsidiaries [Member]
Current assets	50,718	53,034
Property and equipment	315,107	307,865
Investment in subsidiaries (equity method)	(23,083)	(33,840)
Other assets	14,752	32,892
Total assets	357,494	359,951
Current liabilities	68,977	17,167
Long-term liabilities	509,954	542,659
Stockholders' equity	(221,437)	(199,875)
Total liabilities and stockholders' equity	357,494	359,951
Restricted Subsidiary Eliminations [Member]
Current assets	(77,915)	(19,642)
Property and equipment	0	0
Investment in subsidiaries (equity method)	226,530	217,852
Other assets	(413,282)	(390,723)
Total assets	(264,667)	(192,513)
Current liabilities	(77,915)	(19,642)
Long-term liabilities	(413,282)	(390,723)
Stockholders' equity	226,530	217,852
Total liabilities and stockholders' equity	(264,667)	(192,513)
Quicksilver And Restricted Subsidiaries [Member]
Current assets	178,176	393,713
Property and equipment	735,901	779,173
Investment in subsidiaries (equity method)	(23,083)	(33,840)
Other assets	63,600	114,961
Total assets	954,594	1,254,007
Current liabilities	136,159	134,010
Long-term liabilities	1,928,350	2,113,221
Stockholders' equity	(1,109,915)	(993,224)
Total liabilities and stockholders' equity	954,594	1,254,007
Unrestricted Non-Guarantor Subsidiaries [Member]
Current assets	(276)	909
Property and equipment	0	0
Investment in subsidiaries (equity method)	(23,105)	(33,840)
Other assets	0	0
Total assets	(23,381)	(32,931)
Current liabilities	(298)	888
Long-term liabilities	0	0
Stockholders' equity	(23,083)	(33,819)
Total liabilities and stockholders' equity	(23,381)	(32,931)
Fortune Creek [Member]
Current assets	1,592	1,110
Property and equipment	79,430	81,632
Investment in subsidiaries (equity method)	0	0
Other assets	0	0
Total assets	81,022	82,742
Current liabilities	3,464	1,671
Long-term liabilities	1,581	1,546
Stockholders' equity	75,977	79,525
Total liabilities and stockholders' equity	81,022	82,742
Consolidating Eliminations [Member]
Current assets	624	(1,772)
Property and equipment	0	0
Investment in subsidiaries (equity method)	46,188	67,680
Other assets	0	0
Total assets	46,812	65,908
Current liabilities	624	(1,772)
Long-term liabilities	99,083	126,132
Stockholders' equity	(52,895)	(58,452)
Total liabilities and stockholders' equity	$ 46,812	$ 65,908