Condensed Consolidating Financial Information (Schedule of Condensed Consolidated Statements Of Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenue	$ 163,498	$ 153,116	$ 373,316	$ 447,318
Operating expenses	98,714	101,041	306,050	337,391
Equity in net earnings of subsidiaries	0	0	0	0
Operating income (loss)	64,784	60,049	67,266	451,073
Fortune Creek accretion	(3,602)	(4,818)	(11,605)	(14,490)
Interest expense and other	(42,364)	(38,688)	(125,751)	(225,123)
Income tax (expense) benefit	4,939	(5,966)	(1,081)	(18,063)
Net income (loss)	23,757	10,577	(71,171)	193,397
Other comprehensive income (loss)	(14,889)	(8,794)	(27,101)	(38,114)
Equity in OCI of subsidiaries	0	0	0	0
Comprehensive income (loss)	8,868	1,783	(98,272)	155,283
Quicksilver Resources Inc. [Member]
Revenue	120,513	114,021	269,321	334,848
Operating expenses	72,868	73,594	225,906	256,810
Equity in net earnings of subsidiaries	8,821	3,854	2,864	(9,227)
Operating income (loss)	56,466	52,255	46,279	409,957
Fortune Creek accretion	0	0	0	0
Interest expense and other	(37,613)	(36,922)	(117,315)	(200,639)
Income tax (expense) benefit	4,826	(4,756)	(213)	(15,921)
Net income (loss)	23,679	10,577	(71,249)	193,397
Other comprehensive income (loss)	(11,564)	(6,114)	(20,252)	(29,014)
Equity in OCI of subsidiaries	(3,325)	(2,680)	(6,849)	(9,100)
Comprehensive income (loss)	8,790	1,783	(98,350)	155,283
Restricted Guarantor Subsidiaries [Member]
Revenue	427	192	1,212	608
Operating expenses	341	68	988	206
Equity in net earnings of subsidiaries	0	0	0	0
Operating income (loss)	86	124	224	402
Fortune Creek accretion	0	0	0	0
Interest expense and other	86	0	86	0
Income tax (expense) benefit	(30)	0	(78)	0
Net income (loss)	142	124	232	402
Other comprehensive income (loss)	0	0	0	0
Equity in OCI of subsidiaries	0	0	0	0
Comprehensive income (loss)	142	124	232	402
Restricted Non-Guarantor Subsidiaries [Member]
Revenue	42,558	38,903	102,783	111,862
Operating expenses	27,648	30,360	86,491	89,559
Equity in net earnings of subsidiaries	(1,458)	(1,834)	(4,266)	(5,300)
Operating income (loss)	13,452	6,709	12,026	17,003
Fortune Creek accretion	0	0	0	0
Interest expense and other	(4,838)	(1,769)	(8,526)	(24,490)
Income tax (expense) benefit	65	(1,210)	(868)	(2,142)
Net income (loss)	8,679	3,730	2,632	(9,629)
Other comprehensive income (loss)	(3,325)	(2,680)	(6,849)	(9,100)
Equity in OCI of subsidiaries	0	0	0	0
Comprehensive income (loss)	5,354	1,050	(4,217)	(18,729)
Restricted Subsidiary Eliminations [Member]
Revenue	0	0	0	0
Operating expenses	0	0	0	0
Equity in net earnings of subsidiaries	(8,821)	(3,854)	(2,864)	9,227
Operating income (loss)	(8,821)	(3,854)	(2,864)	9,227
Fortune Creek accretion	0	0	0	0
Interest expense and other	0	0	0	0
Income tax (expense) benefit	78	0	78	0
Net income (loss)	(8,743)	(3,854)	(2,786)	9,227
Other comprehensive income (loss)	0	0	0	0
Equity in OCI of subsidiaries	3,325	2,680	6,849	9,100
Comprehensive income (loss)	(5,418)	(1,174)	4,063	18,327
Quicksilver And Restricted Subsidiaries [Member]
Revenue	163,498	153,116	373,316	447,318
Operating expenses	100,857	104,022	313,385	346,575
Equity in net earnings of subsidiaries	(1,458)	(1,834)	(4,266)	(5,300)
Operating income (loss)	61,183	55,234	55,665	436,589
Fortune Creek accretion	0	0	0	0
Interest expense and other	(42,365)	(38,691)	(125,755)	(225,129)
Income tax (expense) benefit	4,939	(5,966)	(1,081)	(18,063)
Net income (loss)	23,757	10,577	(71,171)	193,397
Other comprehensive income (loss)	(14,889)	(8,794)	(27,101)	(38,114)
Equity in OCI of subsidiaries	0	0	0	0
Comprehensive income (loss)	8,868	1,783	(98,272)	155,283
Unrestricted Non-Guarantor Subsidiaries [Member]
Revenue	0	0	0	0
Operating expenses	0	0	0	0
Equity in net earnings of subsidiaries	2,144	2,984	7,339	9,190
Operating income (loss)	2,144	2,984	7,339	9,190
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)	2,144	2,984	7,339	9,190
Other comprehensive income (loss)	0	0	0	0
Equity in OCI of subsidiaries	0	0	0	0
Comprehensive income (loss)	2,144	2,984	7,339	9,190
Fortune Creek [Member]
Revenue	4,271	5,674	13,349	16,736
Operating expenses	2,128	2,693	6,014	7,552
Equity in net earnings of subsidiaries	0	0	0	0
Operating income (loss)	2,143	2,981	7,335	9,184
Fortune Creek accretion	0	0	0	0
Interest expense and other	1	3	4	6
Income tax (expense) benefit	0	0	0	0
Net income (loss)	2,144	2,984	7,339	9,190
Other comprehensive income (loss)	0	0	0	0
Equity in OCI of subsidiaries	0	0	0	0
Comprehensive income (loss)	2,144	2,984	7,339	9,190
Consolidating Eliminations [Member]
Revenue	(4,271)	(5,674)	(13,349)	(16,736)
Operating expenses	(4,271)	(5,674)	(13,349)	(16,736)
Equity in net earnings of subsidiaries	(686)	(1,150)	(3,073)	(3,890)
Operating income (loss)	(686)	(1,150)	(3,073)	(3,890)
Fortune Creek accretion	(3,602)	(4,818)	(11,605)	(14,490)
Interest expense and other	0	0	0	0
Income tax (expense) benefit	0	0	0	0
Net income (loss)	(4,288)	(5,968)	(14,678)	(18,380)
Other comprehensive income (loss)	0	0	0	0
Equity in OCI of subsidiaries	0	0	0	0
Comprehensive income (loss)	(4,288)	(5,968)	(14,678)	(18,380)
Tokyo Gas [Member]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal		7,974		341,146
Tokyo Gas [Member] | Quicksilver Resources Inc. [Member]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal		7,974		341,146
Tokyo Gas [Member] | Restricted Guarantor Subsidiaries [Member]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal		0		0
Tokyo Gas [Member] | Restricted Non-Guarantor Subsidiaries [Member]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal		0		0
Tokyo Gas [Member] | Restricted Subsidiary Eliminations [Member]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal		0		0
Tokyo Gas [Member] | Quicksilver And Restricted Subsidiaries [Member]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal		7,974		341,146
Tokyo Gas [Member] | Unrestricted Non-Guarantor Subsidiaries [Member]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal		0		0
Tokyo Gas [Member] | Fortune Creek [Member]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal		0		0
Tokyo Gas [Member] | Consolidating Eliminations [Member]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal		$ 0		$ 0