Condensed Consolidating Financial Information (Schedule of Condensed Consolidated Statements of Cash Flows) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Schedule of Equity Method Investments [Line Items]
Net cash flow provided (used) by operating activities	$ (763)	$ (78,106)
Purchases of property, plant and equipment	(87,992)	(55,849)
Investment in subsidiary	0
Proceeds from sale of properties and equipment	1,810	1,681
Payments to acquire marketable securities	(55,890)	(118,656)
Proceeds from Sale and Maturity of Marketable Securities	212,057
Net cash used by investing activities	163,441	290,594
Issuance of debt	0	1,173,306
Repayments of debt	(193,689)	(1,264,117)
Debt issuance costs	(225)	(25,608)
Intercompany note	0	0
Intercompany financing	0
Contribution received	0
Distribution of Fortune Creek Partnership funds	(33,770)	(5,009)
Purchase of treasury stock	(2,383)	(1,125)
Net cash flow provided (used) by financing activities	(230,067)	(122,553)
Effect of exchange rates on cash	570	1,907
Net increase (decrease) in cash and equivalents	(66,819)	91,842
Cash and cash equivalents at beginning of period	89,103	4,951
Cash and cash equivalents at end of period	22,284	96,793
Quicksilver Resources Inc. [Member]
Schedule of Equity Method Investments [Line Items]
Net cash flow provided (used) by operating activities	(25,494)	(102,770)
Purchases of property, plant and equipment	(70,590)	(36,840)
Investment in subsidiary	(56,781)
Proceeds from sale of properties and equipment	1,420	1,664
Payments to acquire marketable securities	(55,890)	(118,656)
Proceeds from Sale and Maturity of Marketable Securities	212,057
Net cash used by investing activities	123,672	309,586
Issuance of debt		1,170,266
Repayments of debt	(138,651)	(1,113,704)
Debt issuance costs	(225)	(25,608)
Intercompany note	(22,559)	(147,103)
Intercompany financing	0
Contribution received	0
Distribution of Fortune Creek Partnership funds	0	0
Purchase of treasury stock	(2,383)	(1,125)
Net cash flow provided (used) by financing activities	(163,818)	(117,274)
Effect of exchange rates on cash	0	0
Net increase (decrease) in cash and equivalents	(65,640)	89,542
Cash and cash equivalents at beginning of period	83,893	4,618
Cash and cash equivalents at end of period	18,253	94,160
Restricted Guarantor Subsidiaries [Member]
Schedule of Equity Method Investments [Line Items]
Net cash flow provided (used) by operating activities	(469)	(37)
Purchases of property, plant and equipment	0	37
Investment in subsidiary	0
Proceeds from sale of properties and equipment	0	0
Payments to acquire marketable securities	0	0
Proceeds from Sale and Maturity of Marketable Securities	0
Net cash used by investing activities	0	37
Issuance of debt		0
Repayments of debt	0	0
Debt issuance costs	0	0
Intercompany note	0	0
Intercompany financing	469
Contribution received	0
Distribution of Fortune Creek Partnership funds	0	0
Purchase of treasury stock	0	0
Net cash flow provided (used) by financing activities	469	0
Effect of exchange rates on cash	0	0
Net increase (decrease) in cash and equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	0	0
Restricted Non-Guarantor Subsidiaries [Member]
Schedule of Equity Method Investments [Line Items]
Net cash flow provided (used) by operating activities	17,652	18,791
Purchases of property, plant and equipment	(17,381)	(18,558)
Investment in subsidiary	(26,395)
Proceeds from sale of properties and equipment	390	17
Payments to acquire marketable securities	0	0
Proceeds from Sale and Maturity of Marketable Securities	0
Net cash used by investing activities	(43,386)	(18,541)
Issuance of debt		3,040
Repayments of debt	(55,038)	(150,413)
Debt issuance costs	0	0
Intercompany note	22,559	147,103
Intercompany financing	56,312
Contribution received	0
Distribution of Fortune Creek Partnership funds	0	0
Purchase of treasury stock	0	0
Net cash flow provided (used) by financing activities	23,833	(270)
Effect of exchange rates on cash	315	20
Net increase (decrease) in cash and equivalents	(1,586)	0
Cash and cash equivalents at beginning of period	4,135	0
Cash and cash equivalents at end of period	2,549	0
Restricted Subsidiary Eliminations [Member]
Schedule of Equity Method Investments [Line Items]
Net cash flow provided (used) by operating activities	0
Purchases of property, plant and equipment	0
Investment in subsidiary	56,781
Proceeds from sale of properties and equipment	0
Payments to acquire marketable securities	0
Proceeds from Sale and Maturity of Marketable Securities	0
Net cash used by investing activities	56,781
Repayments of debt	0
Debt issuance costs	0
Intercompany note	0
Intercompany financing	(56,781)
Contribution received	0
Distribution of Fortune Creek Partnership funds	0
Purchase of treasury stock	0
Net cash flow provided (used) by financing activities	(56,781)
Effect of exchange rates on cash	0
Net increase (decrease) in cash and equivalents	0
Cash and cash equivalents at beginning of period	0
Cash and cash equivalents at end of period	0
Quicksilver And Restricted Subsidiaries [Member]
Schedule of Equity Method Investments [Line Items]
Net cash flow provided (used) by operating activities	(8,311)	(84,016)
Purchases of property, plant and equipment	(87,971)	(55,361)
Investment in subsidiary	(26,395)
Proceeds from sale of properties and equipment	1,810	1,681
Payments to acquire marketable securities	(55,890)	(118,656)
Proceeds from Sale and Maturity of Marketable Securities	212,057
Net cash used by investing activities	137,067	291,082
Issuance of debt		1,173,306
Repayments of debt	(193,689)	(1,264,117)
Debt issuance costs	(225)	(25,608)
Intercompany note	0	0
Intercompany financing	0
Contribution received	0
Distribution of Fortune Creek Partnership funds	0	0
Purchase of treasury stock	(2,383)	(1,125)
Net cash flow provided (used) by financing activities	(196,297)	(117,544)
Effect of exchange rates on cash	315	20
Net increase (decrease) in cash and equivalents	(67,226)	89,542
Cash and cash equivalents at beginning of period	88,028	4,618
Cash and cash equivalents at end of period	20,802	94,160
Unrestricted Non-Guarantor Subsidiaries [Member]
Schedule of Equity Method Investments [Line Items]
Net cash flow provided (used) by operating activities	0	0
Purchases of property, plant and equipment	0	0
Investment in subsidiary	(26,395)
Proceeds from sale of properties and equipment	0	0
Payments to acquire marketable securities	0	0
Proceeds from Sale and Maturity of Marketable Securities	0
Net cash used by investing activities	(26,395)	0
Issuance of debt		0
Repayments of debt	0	0
Debt issuance costs	0	0
Intercompany note	0	0
Intercompany financing	0
Contribution received	26,395
Distribution of Fortune Creek Partnership funds	0	0
Purchase of treasury stock	0	0
Net cash flow provided (used) by financing activities	26,395	0
Effect of exchange rates on cash	0	0
Net increase (decrease) in cash and equivalents	0	0
Cash and cash equivalents at beginning of period	22	0
Cash and cash equivalents at end of period	22	0
Fortune Creek [Member]
Schedule of Equity Method Investments [Line Items]
Net cash flow provided (used) by operating activities	7,548	5,910
Purchases of property, plant and equipment	(21)	(488)
Investment in subsidiary	0
Proceeds from sale of properties and equipment	0	0
Payments to acquire marketable securities	0	0
Proceeds from Sale and Maturity of Marketable Securities	0
Net cash used by investing activities	(21)	(488)
Issuance of debt		0
Repayments of debt	0	0
Debt issuance costs	0	0
Intercompany note	0	0
Intercompany financing	0
Contribution received	26,395
Distribution of Fortune Creek Partnership funds	(33,770)	(5,009)
Purchase of treasury stock	0	0
Net cash flow provided (used) by financing activities	(7,375)	(5,009)
Effect of exchange rates on cash	255	1,887
Net increase (decrease) in cash and equivalents	407	2,300
Cash and cash equivalents at beginning of period	1,053	333
Cash and cash equivalents at end of period	1,460	2,633
Consolidating Eliminations [Member]
Schedule of Equity Method Investments [Line Items]
Net cash flow provided (used) by operating activities	0
Purchases of property, plant and equipment	0
Investment in subsidiary	52,790
Proceeds from sale of properties and equipment	0
Payments to acquire marketable securities	0
Proceeds from Sale and Maturity of Marketable Securities	0
Net cash used by investing activities	52,790
Repayments of debt	0
Debt issuance costs	0
Contribution received	(52,790)
Distribution of Fortune Creek Partnership funds	0
Purchase of treasury stock	0
Net cash flow provided (used) by financing activities	(52,790)
Effect of exchange rates on cash	0
Net increase (decrease) in cash and equivalents	0
Cash and cash equivalents at beginning of period	0
Cash and cash equivalents at end of period	0
Tokyo Gas [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates	0	463,418
Tokyo Gas [Member] | Quicksilver Resources Inc. [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates		463,418
Tokyo Gas [Member] | Restricted Guarantor Subsidiaries [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates		0
Tokyo Gas [Member] | Restricted Non-Guarantor Subsidiaries [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates		0
Tokyo Gas [Member] | Quicksilver And Restricted Subsidiaries [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates		463,418
Tokyo Gas [Member] | Unrestricted Non-Guarantor Subsidiaries [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates		0
Tokyo Gas [Member] | Fortune Creek [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates		0
Sandwash Basin [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates	93,456	0
Sandwash Basin [Member] | Quicksilver Resources Inc. [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates	93,456
Sandwash Basin [Member] | Restricted Guarantor Subsidiaries [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates	0
Sandwash Basin [Member] | Restricted Non-Guarantor Subsidiaries [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates	0
Sandwash Basin [Member] | Restricted Subsidiary Eliminations [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates	0
Sandwash Basin [Member] | Quicksilver And Restricted Subsidiaries [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates	93,456
Sandwash Basin [Member] | Unrestricted Non-Guarantor Subsidiaries [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates	0
Sandwash Basin [Member] | Fortune Creek [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates	0
Sandwash Basin [Member] | Consolidating Eliminations [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates	$ 0