Condensed Consolidating Financial Information (Schedule Of Condensed Consolidated Balance Sheets) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets	$ 396,300	$ 393,960
Property and equipment	812,480	860,805
Investment in subsidiaries (equity method)	0	0
Other assets	59,477	114,961
Total assets	1,268,257	1,369,726
Current liabilities	108,524	134,797
Long-term liabilities	2,257,217	2,240,899
Stockholders' equity	(1,097,484)	(1,005,970)
Total liabilities and stockholders' equity	1,268,257	1,369,726
Quicksilver Resources Inc. [Member]
Current assets	338,424	349,586
Property and equipment	417,921	455,822
Investment in subsidiaries (equity method)	(227,994)	(217,852)
Other assets	457,285	472,792
Total assets	985,636	1,060,348
Current liabilities	103,042	124,275
Long-term liabilities	1,980,078	1,942,043
Stockholders' equity	(1,097,484)	(1,005,970)
Total liabilities and stockholders' equity	985,636	1,060,348
Restricted Guarantor Subsidiaries [Member]
Current assets	13,096	10,735
Property and equipment	14,625	15,486
Investment in subsidiaries (equity method)	0	0
Other assets	0	0
Total assets	27,721	26,221
Current liabilities	13,401	12,210
Long-term liabilities	19,241	19,242
Stockholders' equity	(4,921)	(5,231)
Total liabilities and stockholders' equity	27,721	26,221
Restricted Non-Guarantor Subsidiaries [Member]
Current assets	65,733	53,034
Property and equipment	305,197	307,865
Investment in subsidiaries (equity method)	(23,409)	(33,840)
Other assets	15,473	32,892
Total assets	362,994	359,951
Current liabilities	11,064	17,167
Long-term liabilities	575,003	542,659
Stockholders' equity	(223,073)	(199,875)
Total liabilities and stockholders' equity	362,994	359,951
Restricted Subsidiary Eliminations [Member]
Current assets	(23,193)	(19,642)
Property and equipment	0	0
Investment in subsidiaries (equity method)	227,994	217,852
Other assets	(413,281)	(390,723)
Total assets	(208,480)	(192,513)
Current liabilities	(23,193)	(19,642)
Long-term liabilities	(413,281)	(390,723)
Stockholders' equity	227,994	217,852
Total liabilities and stockholders' equity	(208,480)	(192,513)
Quicksilver And Restricted Subsidiaries [Member]
Current assets	394,060	393,713
Property and equipment	737,743	779,173
Investment in subsidiaries (equity method)	(23,409)	(33,840)
Other assets	59,477	114,961
Total assets	1,167,871	1,254,007
Current liabilities	104,314	134,010
Long-term liabilities	2,161,041	2,113,221
Stockholders' equity	(1,097,484)	(993,224)
Total liabilities and stockholders' equity	1,167,871	1,254,007
Unrestricted Non-Guarantor Subsidiaries [Member]
Current assets	(455)	909
Property and equipment	0	0
Investment in subsidiaries (equity method)	(23,429)	(33,840)
Other assets	0	0
Total assets	(23,884)	(32,931)
Current liabilities	(475)	888
Long-term liabilities	0	0
Stockholders' equity	(23,409)	(33,819)
Total liabilities and stockholders' equity	(23,884)	(32,931)
Fortune Creek [Member]
Current assets	1,746	1,110
Property and equipment	74,737	81,632
Investment in subsidiaries (equity method)	0	0
Other assets	0	0
Total assets	76,483	82,742
Current liabilities	3,736	1,671
Long-term liabilities	1,525	1,546
Stockholders' equity	71,222	79,525
Total liabilities and stockholders' equity	76,483	82,742
Consolidating Eliminations [Member]
Current assets	949	(1,772)
Property and equipment	0	0
Investment in subsidiaries (equity method)	46,838	67,680
Other assets	0	0
Total assets	47,787	65,908
Current liabilities	949	(1,772)
Long-term liabilities	94,651	126,132
Stockholders' equity	(47,813)	(58,452)
Total liabilities and stockholders' equity	$ 47,787	$ 65,908