Condensed Consolidating Financial Information (Schedule of Condensed Consolidated Statements Of Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenue	$ 118,032	$ 175,497	$ 209,818	$ 294,201
Operating expenses	104,496	113,775	207,336	236,351
Equity in net earnings of subsidiaries	0	0	0	0
Operating income (loss)	13,536	394,894	2,482	391,022
Fortune Creek accretion	(3,602)	(4,827)	(8,003)	(9,672)
Interest expense and other	(42,660)	(142,343)	(83,387)	(186,435)
Income tax (expense) benefit	(3,369)	(5,201)	(6,020)	(12,097)
Net income (loss)	(36,095)	242,523	(94,928)	182,818
Other comprehensive income (loss)	(107)	(14,867)	(12,212)	(29,320)
Equity in OCI of subsidiaries	0	0	0	0
Comprehensive income (loss)	(36,202)	227,656	(107,140)	153,498
Quicksilver Resources Inc. [Member]
Revenue	85,898	131,925	148,808	220,826
Operating expenses	77,637	86,194	153,038	183,217
Equity in net earnings of subsidiaries	(268)	(8,890)	(5,957)	(13,081)
Operating income (loss)	7,993	370,013	(10,187)	357,700
Fortune Creek accretion	0	0	0	0
Interest expense and other	(41,691)	(122,549)	(79,702)	(163,717)
Income tax (expense) benefit	(2,397)	(4,941)	(5,039)	(11,165)
Net income (loss)	(36,095)	242,523	(94,928)	182,818
Other comprehensive income (loss)	110	(11,898)	(8,688)	(22,900)
Equity in OCI of subsidiaries	(217)	(2,969)	(3,524)	(6,420)
Comprehensive income (loss)	(36,202)	227,656	(107,140)	153,498
Restricted Guarantor Subsidiaries [Member]
Revenue	411	202	785	416
Operating expenses	356	108	647	138
Equity in net earnings of subsidiaries	0	0	0	0
Operating income (loss)	55	94	138	278
Fortune Creek accretion	0	0	0	0
Interest expense and other	0	0	0	0
Income tax (expense) benefit	(19)	0	(48)	0
Net income (loss)	36	94	90	278
Other comprehensive income (loss)	0	0	0	0
Equity in OCI of subsidiaries	0	0	0	0
Comprehensive income (loss)	36	94	90	278
Restricted Non-Guarantor Subsidiaries [Member]
Revenue	31,723	43,370	60,225	72,959
Operating expenses	28,578	30,740	58,843	59,199
Equity in net earnings of subsidiaries	(1,526)	(1,558)	(2,808)	(3,466)
Operating income (loss)	1,619	11,072	(1,426)	10,294
Fortune Creek accretion	0	0	0	0
Interest expense and other	(970)	(19,796)	(3,688)	(22,721)
Income tax (expense) benefit	(953)	(260)	(933)	(932)
Net income (loss)	(304)	(8,984)	(6,047)	(13,359)
Other comprehensive income (loss)	(217)	(2,969)	(3,524)	(6,420)
Equity in OCI of subsidiaries	0	0	0	0
Comprehensive income (loss)	(521)	(11,953)	(9,571)	(19,779)
Restricted Subsidiary Eliminations [Member]
Revenue	0	0	0	0
Operating expenses	0	0	0	0
Equity in net earnings of subsidiaries	268	8,890	5,957	13,081
Operating income (loss)	268	8,890	5,957	13,081
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)	268	8,890	5,957	13,081
Other comprehensive income (loss)	0	0	0	0
Equity in OCI of subsidiaries	217	2,969	3,524	6,420
Comprehensive income (loss)	485	11,859	9,481	19,501
Quicksilver And Restricted Subsidiaries [Member]
Revenue	118,032	175,497	209,818	294,201
Operating expenses	106,571	117,042	212,528	242,554
Equity in net earnings of subsidiaries	(1,526)	(1,558)	(2,808)	(3,466)
Operating income (loss)	9,935	390,069	(5,518)	381,353
Fortune Creek accretion	0	0	0	0
Interest expense and other	(42,661)	(142,345)	(83,390)	(186,438)
Income tax (expense) benefit	(3,369)	(5,201)	(6,020)	(12,097)
Net income (loss)	(36,095)	242,523	(94,928)	182,818
Other comprehensive income (loss)	(107)	(14,867)	(12,212)	(29,320)
Equity in OCI of subsidiaries	0	0	0	0
Comprehensive income (loss)	(36,202)	227,656	(107,140)	153,498
Unrestricted Non-Guarantor Subsidiaries [Member]
Revenue	0	0	0	0
Operating expenses	0	0	0	0
Equity in net earnings of subsidiaries	2,076	3,269	5,195	6,206
Operating income (loss)	2,076	3,269	5,195	6,206
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)	2,076	3,269	5,195	6,206
Other comprehensive income (loss)	0	0	0	0
Equity in OCI of subsidiaries	0	0	0	0
Comprehensive income (loss)	2,076	3,269	5,195	6,206
Fortune Creek [Member]
Revenue	4,136	5,737	9,078	11,062
Operating expenses	2,061	2,470	3,886	4,859
Equity in net earnings of subsidiaries	0	0	0	0
Operating income (loss)	2,075	3,267	5,192	6,203
Fortune Creek accretion	0	0	0	0
Interest expense and other	1	2	3	3
Income tax (expense) benefit	0	0	0	0
Net income (loss)	2,076	3,269	5,195	6,206
Other comprehensive income (loss)	0	0	0	0
Equity in OCI of subsidiaries	0	0	0	0
Comprehensive income (loss)	2,076	3,269	5,195	6,206
Consolidating Eliminations [Member]
Revenue	(4,136)	(5,737)	(9,078)	(11,062)
Operating expenses	(4,136)	(5,737)	(9,078)	(11,062)
Equity in net earnings of subsidiaries	(550)	(1,711)	(2,387)	(2,740)
Operating income (loss)	(550)	(1,711)	(2,387)	(2,740)
Fortune Creek accretion	(3,602)	(4,827)	(8,003)	(9,672)
Interest expense and other	0	0	0	0
Income tax (expense) benefit	0	0	0	0
Net income (loss)	(4,152)	(6,538)	(10,390)	(12,412)
Other comprehensive income (loss)	0	0	0	0
Equity in OCI of subsidiaries	0	0	0	0
Comprehensive income (loss)	(4,152)	(6,538)	(10,390)	(12,412)
Tokyo Gas [Member]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal		333,172		333,172
Tokyo Gas [Member] | Quicksilver Resources Inc. [Member]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal		333,172		333,172
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		333,172		333,172
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