Condensed Consolidating Financial Information (Schedule Of Condensed Consolidated Balance Sheets) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current assets	$ 221,004	$ 423,277
Property and equipment	440,820	728,780
Investment in subsidiaries (equity method)	0	0
Other Assets	6,640	62,245
Total assets	668,464	1,214,302
Current liabilities	214,517	2,141,037
Long-term liabilities	197,921	211,136
Liabilities Subject to Compromise	1,884,128	0
Total stockholders' equity	(1,628,102)	(1,137,871)
Total liabilities and stockholders' equity	668,464	1,214,302
Quicksilver Resources Inc. [Member]
Current assets	190,165	774,287
Property and equipment	269,896	420,744
Investment in subsidiaries (equity method)	(467,867)	(293,312)
Other Assets	415,257	43,533
Total assets	407,451	945,252
Current liabilities	130,132	2,038,575
Long-term liabilities	46,237	44,548
Liabilities Subject to Compromise	1,884,128
Total stockholders' equity	(1,653,046)	(1,137,871)
Total liabilities and stockholders' equity	407,451	945,252
Restricted Guarantor Subsidiaries [Member]
Current assets	1,981	13,909
Property and equipment	13,545	14,357
Investment in subsidiaries (equity method)	0	0
Other Assets	0	0
Total assets	15,526	28,266
Current liabilities	401	13,837
Long-term liabilities	10,195	15,131
Liabilities Subject to Compromise	0
Total stockholders' equity	4,930	(702)
Total liabilities and stockholders' equity	15,526	28,266
Restricted Non-Guarantor Subsidiaries [Member]
Current assets	24,287	68,513
Property and equipment	146,960	280,830
Investment in subsidiaries (equity method)	(87,936)	(82,360)
Other Assets	4,665	18,712
Total assets	87,976	285,695
Current liabilities	497,142	520,296
Long-term liabilities	52,207	58,009
Liabilities Subject to Compromise	0
Total stockholders' equity	(461,373)	(292,610)
Total liabilities and stockholders' equity	87,976	285,695
Unrestricted Non-Guarantor Subsidiaries [Member]
Current assets	17	82
Property and equipment	0	0
Investment in subsidiaries (equity method)	(86,499)	(82,379)
Other Assets	0	0
Total assets	(86,482)	(82,297)
Current liabilities	0	63
Long-term liabilities	0	0
Liabilities Subject to Compromise	0
Total stockholders' equity	(86,482)	(82,360)
Total liabilities and stockholders' equity	(86,482)	(82,297)
Fortune Creek [Member]
Current assets	4,554	1,742
Property and equipment	10,419	12,849
Investment in subsidiaries (equity method)	0	0
Other Assets	0	0
Total assets	14,973	14,591
Current liabilities	124	3,522
Long-term liabilities	1,347	1,492
Liabilities Subject to Compromise	0
Total stockholders' equity	13,502	9,577
Total liabilities and stockholders' equity	14,973	14,591
Consolidating Eliminations [Member]
Current assets	0	(435,256)
Property and equipment	0	0
Investment in subsidiaries (equity method)	642,302	458,051
Other Assets	(413,282)	0
Total assets	229,020	22,795
Current liabilities	(413,282)	(435,256)
Long-term liabilities	87,935	91,956
Liabilities Subject to Compromise	0
Total stockholders' equity	554,367	366,095
Total liabilities and stockholders' equity	$ 229,020	$ 22,795