Condensed Consolidating Financial Information (Schedule Of Condensed Consolidated Balance Sheets) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets	$ 349,948	$ 207,513
Property and equipment	862,932	1,029,058
Investment in subsidiaries (equity method)	0	0
Other assets	118,733	145,217
Total assets	1,331,613	1,381,788
Current liabilities	115,658	167,791
Long-term liabilities	2,180,473	2,346,794
Stockholders' equity	(964,518)	(1,132,797)
Total liabilities and stockholders' equity	1,331,613	1,381,788
Quicksilver Resources Inc. [Member]
Current assets	315,788	261,130
Property and equipment	457,139	621,073
Investment in subsidiaries (equity method)	(211,041)	(191,725)
Other assets	476,322	346,972
Total assets	1,038,208	1,037,450
Current liabilities	107,325	255,678
Long-term liabilities	1,895,402	1,914,568
Stockholders' equity	(964,519)	(1,132,796)
Total liabilities and stockholders' equity	1,038,208	1,037,450
Restricted Guarantor Subsidiaries [Member]
Current assets	10,016	105,695
Property and equipment	15,757	20,007
Investment in subsidiaries (equity method)	0	0
Other assets	0	0
Total assets	25,773	125,702
Current liabilities	11,802	112,133
Long-term liabilities	19,242	19,242
Stockholders' equity	(5,271)	(5,673)
Total liabilities and stockholders' equity	25,773	125,702
Restricted Non-Guarantor Subsidiaries [Member]
Current assets	61,101	76,088
Property and equipment	304,754	296,462
Investment in subsidiaries (equity method)	(33,931)	(42,883)
Other assets	33,134	41,865
Total assets	365,058	371,532
Current liabilities	35,835	33,475
Long-term liabilities	522,245	524,107
Stockholders' equity	(193,022)	(186,050)
Total liabilities and stockholders' equity	365,058	371,532
Restricted Subsidiary Eliminations [Member]
Current assets	(35,986)	(222,586)
Property and equipment	0	0
Investment in subsidiaries (equity method)	211,041	191,725
Other assets	(390,723)	(243,620)
Total assets	(215,668)	(274,481)
Current liabilities	(35,986)	(222,586)
Long-term liabilities	(390,723)	(243,620)
Stockholders' equity	211,041	191,725
Total liabilities and stockholders' equity	(215,668)	(274,481)
Quicksilver And Restricted Subsidiaries [Member]
Current assets	350,919	220,327
Property and equipment	777,650	937,542
Investment in subsidiaries (equity method)	(33,931)	(42,883)
Other assets	118,733	145,217
Total assets	1,213,371	1,260,203
Current liabilities	118,976	178,700
Long-term liabilities	2,046,166	2,214,297
Stockholders' equity	(951,771)	(1,132,794)
Total liabilities and stockholders' equity	1,213,371	1,260,203
Unrestricted Non-Guarantor Subsidiaries [Member]
Current assets	2,443	13,250
Property and equipment	0	0
Investment in subsidiaries (equity method)	(33,931)	(42,905)
Other assets	0	0
Total assets	(31,488)	(29,655)
Current liabilities	2,423	13,230
Long-term liabilities	0	0
Stockholders' equity	(33,911)	(42,885)
Total liabilities and stockholders' equity	(31,488)	(29,655)
Fortune Creek [Member]
Current assets	1,428	391
Property and equipment	85,282	91,516
Investment in subsidiaries (equity method)	0	0
Other assets	0	0
Total assets	86,710	91,907
Current liabilities	(899)	2,316
Long-term liabilities	1,575	1,585
Stockholders' equity	86,034	88,006
Total liabilities and stockholders' equity	86,710	91,907
Consolidating Eliminations [Member]
Current assets	(4,842)	(26,455)
Property and equipment	0	0
Investment in subsidiaries (equity method)	67,862	85,788
Other assets	0	0
Total assets	63,020	59,333
Current liabilities	(4,842)	(26,455)
Long-term liabilities	132,732	130,912
Stockholders' equity	(64,870)	(45,124)
Total liabilities and stockholders' equity	$ 63,020	$ 59,333