Condensed Consolidating Financial Information (Schedule of Condensed Consolidated Statements Of Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenue	$ 58,987	$ 163,498	$ 227,119	$ 373,316
Operating expenses	226,034	98,714	464,913	306,050
Equity in net earnings of subsidiaries	0	0	0	0
Operating income (loss)	(167,047)	64,784	(237,794)	67,266
Reorganization Items	(7,883)	0	(148,568)	0
Fortune Creek accretion	(3,279)	(3,602)	(9,877)	(11,605)
Interest expense and other	(3,851)	(42,364)	(69,643)	(125,751)
Income tax (expense) benefit	(2,152)	4,939	(5,836)	(1,081)
Net income (loss)	(184,212)	23,757	(471,718)	(71,171)
Other comprehensive income (loss)	(5,659)	(14,889)	(23,549)	(27,101)
Equity in OCI of subsidiaries	0	0	0	0
Comprehensive income (loss)	(189,871)	8,868	(495,267)	(98,272)
Quicksilver Resources Inc. [Member]
Revenue	46,964	120,513	173,027	269,321
Operating expenses	197,553	72,868	319,363	225,906
Equity in net earnings of subsidiaries	(23,981)	8,821	(138,506)	2,864
Operating income (loss)	(174,570)	56,466	(284,842)	46,279
Reorganization Items	(7,883)		(148,568)
Fortune Creek accretion	0	0	0	0
Interest expense and other	571	(37,613)	(31,815)	(117,315)
Income tax (expense) benefit	(2,330)	4,826	(6,493)	(213)
Net income (loss)	(184,212)	23,679	(471,718)	(71,249)
Other comprehensive income (loss)	(4,228)	(11,564)	(18,444)	(20,252)
Equity in OCI of subsidiaries	(1,431)	(3,325)	(5,105)	(6,849)
Comprehensive income (loss)	(189,871)	8,790	(495,267)	(98,350)
Restricted Guarantor Subsidiaries [Member]
Revenue	941	427	7,402	1,212
Operating expenses	613	341	1,769	988
Equity in net earnings of subsidiaries	0	0	0	0
Operating income (loss)	328	86	5,633	224
Reorganization Items	0		0
Fortune Creek accretion	0	0	0	0
Interest expense and other	0	86	0	86
Income tax (expense) benefit	0	(30)	0	(78)
Net income (loss)	328	142	5,633	232
Other comprehensive income (loss)	0	0	0	0
Equity in OCI of subsidiaries	0	0	0	0
Comprehensive income (loss)	328	142	5,633	232
Restricted Non-Guarantor Subsidiaries [Member]
Revenue	11,515	42,558	47,937	102,783
Operating expenses	30,576	27,648	151,912	86,491
Equity in net earnings of subsidiaries	(1,004)	(1,458)	(2,991)	(4,266)
Operating income (loss)	(20,065)	13,452	(106,966)	12,026
Reorganization Items	0		0
Fortune Creek accretion	0	0	0	0
Interest expense and other	(4,422)	(4,838)	(37,830)	(8,526)
Income tax (expense) benefit	178	65	657	(868)
Net income (loss)	(24,309)	8,679	(144,139)	2,632
Other comprehensive income (loss)	(1,431)	(3,325)	(5,105)	(6,849)
Equity in OCI of subsidiaries	0	0	0	0
Comprehensive income (loss)	(25,740)	5,354	(149,244)	(4,217)
Unrestricted Non-Guarantor Subsidiaries [Member]
Revenue	0	0	0	0
Operating expenses	0	0	0	0
Equity in net earnings of subsidiaries	2,275	2,144	6,886	7,339
Operating income (loss)	2,275	2,144	6,886	7,339
Reorganization Items	0		0
Fortune Creek accretion	0	0	0	0
Interest expense and other	0	0	0	0
Income tax (expense) benefit	0	0	0	0
Net income (loss)	2,275	2,144	6,886	7,339
Other comprehensive income (loss)	0	0	0	0
Equity in OCI of subsidiaries	0	0	0	0
Comprehensive income (loss)	2,275	2,144	6,886	7,339
Fortune Creek [Member]
Revenue	2,974	4,271	8,831	13,349
Operating expenses	699	2,128	1,947	6,014
Equity in net earnings of subsidiaries	0	0	0	0
Operating income (loss)	2,275	2,143	6,884	7,335
Reorganization Items	0		0
Fortune Creek accretion	0	0	0	0
Interest expense and other	0	1	2	4
Income tax (expense) benefit	0	0	0	0
Net income (loss)	2,275	2,144	6,886	7,339
Other comprehensive income (loss)	0	0	0	0
Equity in OCI of subsidiaries	0	0	0	0
Comprehensive income (loss)	2,275	2,144	6,886	7,339
Consolidating Eliminations [Member]
Revenue	(3,407)	(4,271)	(10,078)	(13,349)
Operating expenses	(3,407)	(4,271)	(10,078)	(13,349)
Equity in net earnings of subsidiaries	22,710	(9,507)	134,611	(5,937)
Operating income (loss)	22,710	(9,507)	134,611	(5,937)
Reorganization Items	0		0
Fortune Creek accretion	(3,279)	(3,602)	(9,877)	(11,605)
Interest expense and other	0	0	0	0
Income tax (expense) benefit	0	78	0	78
Net income (loss)	19,431	(13,031)	124,734	(17,464)
Other comprehensive income (loss)	0	0	0	0
Equity in OCI of subsidiaries	1,431	3,325	5,105	6,849
Comprehensive income (loss)	$ 20,862	$ (9,706)	$ 129,839	$ (10,615)