Quicksilver Resources (KWK) 10-Q 10 Nov 14 2014 Q3 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	9 Months Ended
	Sep. 30, 2014	Oct. 31, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Sep-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'
Entity Registrant Name	'QUICKSILVER RESOURCES INC	'
Entity Central Index Key	'0001060990	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	179,983,515

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Income (Loss) and Comprehensive Income (Loss) (USD $)	3 Months Ended				9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Revenue	'		'		'		'
Production	$102,615		$104,546		$332,187		$358,281
Sales of purchased natural gas	16,660		15,130		53,401		50,373
Net derivative gains (losses)	43,310		32,733		-15,080		36,202
Other	913		707		2,808		2,462
Total revenue	163,498		153,116		373,316		447,318
Operating expense	'		'		'		'
Lease operating	17,176		18,591		54,622		63,699
Gathering, processing and transportation	34,807		35,567		102,511		112,064
Production and ad valorem taxes	4,067		4,678		12,557		15,462
Costs of purchased natural gas	16,599		15,114		53,305		50,311
Depletion, depreciation and accretion	13,969		14,390		42,584		47,911
Impairment of Oil and Gas Properties	135		0		135		0
General and administrative	11,310		10,471		38,115		43,509
Other operating	651		2,230		2,221		4,435
Total expense	98,714		101,041		306,050		337,391
Operating income (loss)	64,784		60,049		67,266		451,073
Other income - net	-2,465		667		-3,824		-14,588
Fortune Creek accretion	-3,602		-4,818		-11,605		-14,490
Interest expense	-39,899		-39,355		-121,927		-210,535
Income (loss) before income taxes	18,818		16,543		-70,090		211,460
Income tax (expense) benefit	4,939		-5,966		-1,081		-18,063
Net Income (Loss) Attributable to Parent	23,757		10,577		-71,171		193,397
Reclassification adjustments related to settlements of derivative contracts into production revenue- net of income tax	-7,968		-11,139		-20,939		-37,181
Foreign currency translation adjustment	-6,921		2,345		-6,162		-933
Other comprehensive income (loss)	-14,889		-8,794		-27,101		-38,114
Comprehensive income (loss)	8,868		1,783		-98,272		155,283
Earnings (loss) per common share - basic	$0.13		$0.06		($0.41)		$1.10
Earnings (loss) per common share - diluted	$0.13	[1]	$0.06	[1]	($0.41)	[1]	$1.10	[1]
Tokyo Gas [Member]	'		'		'		'
Operating expense	'		'		'		'
Gain (Loss) on Disposition of Oil and Gas and Timber Property	$0		$7,974		$0		$341,146
[1]	For the three months ended September 30, 2014, 6.6 million shares associated with our stock options and 1.2 million shares associated with our unvested RSUs were antidilutive and, therefore, excluded from the diluted share calculations. For the three months ended September 30, 2013, 6.2 million shares associated with our stock options and 0.2 million shares associated with our unvested RSUs were antidilutive and, therefore, excluded from the diluted share calculations. For the nine months ended September 30, 2014, 6.6 million shares associated with our stock options and 0.8 million shares associated with our unvested RSUs were antidilutive and, therefore, excluded from the diluted share calculations. For the nine months ended September 30, 2013, 5.5 million shares associated with our stock options and 0.2 million shares associated with our unvested RSUs were antidilutive and, therefore, excluded from the diluted share calculations.

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets	'	'
Cash	$248,325	$89,103
Marketable Securities, Current	0	166,343
Cash, Cash Equivalents, and Short-term Investments	248,325	255,446
Accounts receivable - net of allowance for doubtful accounts	59,491	58,645
Derivative assets at fair value	66,098	57,523
Other current assets	22,386	22,346
Total current assets	396,300	393,960
Property, plant and equipment - net	'	'
Oil and gas properties, full cost method (including unevaluated costs of $218,398 and $221,605, respectively)	608,572	640,443
Property, Plant and Equipment, Other, Net	203,908	220,362
Property, plant and equipment, net of accumulated depletion and depreciation	812,480	860,805
Derivative assets at fair value	25,968	73,357
Other assets	33,509	41,604
Total assets	1,268,257	1,369,726
Current liabilities	'	'
Accounts payable	13,587	28,822
Accrued liabilities	94,091	102,850
Derivative liabilities at fair value	846	3,125
Total current liabilities	108,524	134,797
Long-term debt	2,037,844	1,988,946
Partnership liability	94,651	126,132
Asset retirement obligations	105,480	106,256
Derivative liabilities at fair value	0	323
Other liabilities	19,242	19,242
Commitments and contingencies (Note 7)	'	'
Stockholders' equity	'	'
Preferred stock, par value $0.01, 10,000,000 shares authorized, none outstanding	0	0
Common stock, $0.01 par value, 400,000,000 shares authorized, and 187,222,654 and 183,994,879 shares issued, respectively	1,872	1,840
Paid in capital in excess of par value	779,206	770,092
Treasury stock of 7,444,372 and 6,698,640 shares, respectively	-53,810	-51,422
Accumulated other comprehensive income	82,780	109,881
Retained deficit	-1,907,532	-1,836,361
Total stockholders' equity	-1,097,484	-1,005,970
Total liabilities and stockholders' equity	$1,268,257	$1,369,726

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Preferred stock, shares outstanding	0	0
Common stock, par value	$0.01	$0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, par value	$0.01	$0.01
Unevaluated costs of oil and gas properties	$218,398	$221,605
Common stock, shares authorized	400,000,000	400,000,000
Common stock, shares issued	187,222,654	183,994,879
Treasury stock, shares	7,444,372	6,698,640

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements Of Equity (USD $)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Stockholders' Equity, Total [Member]
In Thousands
Balances at Dec. 31, 2012	'	$1,790	$751,394	($49,495)	$161,493	($1,997,979)	($1,132,797)
Net income (loss)	193,397	'	'	'	'	193,397	193,397
Hedge derivative contract settlements reclassified into earnings from AOCI, net of income tax	'	'	'	'	-37,181	'	-37,181
Foreign currency translation adjustment	-933	'	'	'	-933	'	-933
Issuance and vesting of stock compensation	'	47	14,421	-1,472	'	'	12,996
Balances at Sep. 30, 2013	'	1,837	765,815	-50,967	123,379	-1,804,582	-964,518
Balances at Dec. 31, 2013	'	1,840	770,092	-51,422	109,881	-1,836,361	-1,005,970
Net income (loss)	-71,171	'	'	'	'	-71,171	-71,171
Hedge derivative contract settlements reclassified into earnings from AOCI, net of income tax	'	'	'	'	-20,939	'	-20,939
Foreign currency translation adjustment	-6,162	'	'	'	-6,162	'	-6,162
Issuance and vesting of stock compensation	'	32	9,114	-2,388	'	'	6,758
Balances at Sep. 30, 2014	'	$1,872	$779,206	($53,810)	$82,780	($1,907,532)	($1,097,484)

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements Of Equity (Parenthetical) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Statement of Stockholders' Equity [Abstract]	'	'
Income tax effect related to hedge derivative contract settlements reclassified into earnings from accumulated other comprehensive income	($8,455)	($17,833)
Income tax effect related to net change in derivative fair value	$0	$0

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements Of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Operating activities:	'	'
Net income (loss)	$71,171	($193,397)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:	'	'
Depletion, depreciation and accretion	42,584	47,911
Impairment of Oil and Gas Properties	135	0
Deferred income tax expense (benefit)	8,455	17,833
Non-cash (gain) loss from hedging and derivative activities	6,731	-12,223
Stock-based compensation	9,146	13,699
Non-cash interest expense	8,441	23,643
Fortune Creek accretion	11,605	14,490
Other	-347	3,622
Changes in assets and liabilities	'	'
Accounts receivable	-1,936	7,398
Prepaid expenses and other assets	1,747	344
Accounts payable	-12,472	-17,973
Increase (Decrease) in Income Taxes Payable, Net of Income Taxes Receivable	-432	-148
Accrued and other liabilities	-7,469	-31,950
Net cash flow provided by (used in) by operating activities	-4,983	-81,103
Investing activities:	'	'
Purchases of property, plant and equipment	-111,444	-78,549
Proceeds from sale of properties and equipment	1,942	2,994
Payments to acquire marketable securities	-55,890	-142,823
Proceeds from Sale and Maturity of Held-to-maturity Securities	222,025	13,178
Net cash provided by (used in) investing activities	152,220	300,515
Financing activities:	'	'
Issuance of debt	243,184	1,173,306
Repayments of debt	-193,689	-1,308,382
Debt issuance costs paid	-225	-25,868
Distribution of Fortune Creek Partnership funds	-37,113	-8,079
Purchase of treasury stock	-2,388	-1,472
Net cash provided by financing activities	9,769	-170,495
Effect of exchange rate changes in cash	2,216	2,610
Net increase (decrease) in cash	159,222	51,527
Cash at beginning of period	89,103	4,951
Cash at end of period	248,325	56,478
Tokyo Gas [Member]	'	'
Adjustments to reconcile net income (loss) to net cash provided by operating activities:	'	'
Gain (Loss) on Disposition of Oil and Gas and Timber Property	0	-341,146
Investing activities:	'	'
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates	0	463,418
Sandwash Basin [Member]	'	'
Investing activities:	'	'
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates	95,587	0
Synergy [Member]	'	'
Investing activities:	'	'
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates	$0	$42,297

Accounting_Policies_And_Disclo

Accounting Policies And Disclosures	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Accounting Policies And Disclosures	'
	ACCOUNTING POLICIES, DISCLOSURES AND NATURE OF OPERATIONS
	The accompanying condensed consolidated interim financial statements have not been audited. In management’s opinion, the accompanying condensed consolidated interim financial statements contain all adjustments necessary to fairly present our financial position as of September 30, 2014 and our results of operations and cash flows for the periods presented. All such adjustments are of a normal recurring nature unless otherwise noted. The results for interim periods are not necessarily indicative of annual results.
	The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts of certain assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expense during each reporting period. We believe our estimates and assumptions are reasonable; however, such estimates and assumptions are subject to a number of risks and uncertainties, which may cause actual results to differ materially from management’s estimates.
	Certain disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted. Accordingly, these financial statements should be read in conjunction with our consolidated financial statements and notes thereto included in our 2013 Annual Report on Form 10-K.
	Our ability to borrow under our Combined Credit Agreements depends on our global borrowing base, which is scheduled to be redetermined twice each year. A reduction to the global borrowing base during the spring or autumn redetermination, or upon a special redetermination requested by our administrative agent under the Combined Credit Agreements, would adversely impact our liquidity and ability to meet our future obligations. Our derivatives contribute to the global borrowing base. Most of our derivative positions expire at year-end 2015. The expiration of these derivatives will adversely affect our global borrowing base, and absent an improvement in natural gas and NGL prices, significant deleveraging from a strategic transaction, reduced interest costs on our debt through refinancing, significant cost savings through avoidance or deferral, or operational efficiencies, we expect to need additional sources of liquidity, including additional debt or equity financing or proceeds from asset sales, at the beginning of 2016 assuming no material debt maturities prior to that date. In addition, we are exploring potential transactions involving any and all of our assets, including our Horn River Asset. If successful, a sale of our Horn River Asset could eliminate or defray our need to make or fund significant capital investments in the Horn River Asset but would also reduce our global borrowing base if not offset by the effects of any related debt reduction. A sale of our other assets could also enhance liquidity if the sale proceeds exceed the associated decrease to the global borrowing base, if any.
	In November 2014, the Combined Credit Agreements were amended to eliminate the requirement to meet the minimum interest coverage ratio covenant beginning in the fourth quarter of 2014 through and including the fourth quarter of 2015. A minimum EBITDAX covenant was added beginning in the fourth quarter of 2014 through and including the fourth quarter of 2015. While we believe with these amendments we will be able to comply with the financial covenants contained in our Combined Credit Agreements through the end of 2015, we do not expect to exceed the required levels by a significant margin, particularly the minimum EBITDAX covenant under our Combined Credit Agreements. Accordingly, even a modest decline in prices for natural gas and NGLs, our failure to achieve anticipated cost savings through avoidance or deferral or operational efficiencies, our failure to execute certain asset purchases or the inaccuracy in any material respect of any of the other assumptions underlying our forecast could cause us to fall short of the financial covenants contained in the Combined Credit Agreements. Absent an improvement in natural gas and NGL prices, significant deleveraging from a strategic transaction, reduced interest costs on our debt through refinancing, significant cost savings through avoidance or deferral, or operational efficiencies, we do not expect to comply with our interest coverage ratio covenant under our Combined Credit Agreements beginning in the first quarter of 2016 and expect that we would need to seek additional covenant relief under the Combined Credit Agreements at that time. In addition, we have benefitted from our natural gas derivatives, which have resulted in cash proceeds being greater than the prevailing price for natural gas. Without the benefit of these derivatives, most of which expire at year-end 2015, our earnings would be reduced and our cash interest expense would exceed our resulting EBITDAX. Any inability to comply with the financial covenants contained in our Combined Credit Agreements, unless waived or amended by the requisite lenders, could materially and adversely affect our liquidity by precluding further borrowings under our credit facilities and by accelerating the maturity of our debt. We may be unsuccessful in obtaining the necessary waivers or amendments.
	In addition, we have significant fixed and springing debt maturities in 2015 and 2016, including the Combined Credit Agreements, the Second Lien Term Loan, the Second Lien Notes and the Senior Subordinated Notes. Note 5 contains a more complete description of our long-term debt, including springing maturities, which could occur as early as October 1, 2015. We do not expect to be able to satisfy these obligations with our cash on hand, committed financing or cash flow from operations. In order to satisfy these obligations we will need to obtain additional debt or equity financing or to sell assets, which we may not be able to do on satisfactory terms, or at all. We are limited in our ability to incur additional debt by the indenture restrictions. We may also seek to address the springing maturities by extending the maturity of or refinancing all or a portion of our Senior Subordinated Notes. If we are unsuccessful in extending or refinancing, we may not be able to satisfy such obligations when they mature.
	Although we have been in discussions on a potential transaction involving our Horn River Asset and have proposed transaction terms, we reached no agreement on any material terms, including structure or valuation. Accordingly, we developed a formalized marketing process for this asset, along with any and all of our assets. We may be unsuccessful in consummating a transaction involving our Horn River Asset or any of our other assets being marketed on acceptable terms, or at all.
	We have retained Houlihan Lokey Capital, Inc., Deloitte Transactions and Business Analytics LLP and other advisors to assist us in one or more of the following exercises:
	•	evaluation of options to address near-term debt maturities;
	•	enhancement of our liquidity position;
	•	evaluation of various strategic alternatives, including the acquisition or monetization of any and all assets or the Company; and
	•	employee retention.
	Recently Issued Accounting Standards
	In May 2014, the FASB issued accounting guidance, “Revenue from Contracts with Customers,” requiring an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The updated standard will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective and permits the use of either the retrospective or cumulative effect transition method. Early adoption is not permitted. The updated standard becomes effective for us in the first quarter of 2017. We have not yet selected a transition method and we are currently evaluating the effect, if any, that the updated standard will have on our consolidated financial statements and related disclosures.
	No other pronouncements materially affecting our financial statements have been issued since the filing of our 2013 Annual Report on Form 10-K.

Divestitures

Divestitures	9 Months Ended
	Sep. 30, 2014
Discontinued Operations and Disposal Groups [Abstract]	'
Divestitures	'
	DIVESTITURES
	In May 2014, we completed the sale of our Niobrara Asset to Southwestern Energy Company. The purchase price was subject to customary purchase price adjustments, which resulted in Southwestern paying us $95.6 million. We determined that the Southwestern Transaction did not represent a significant disposal of reserves under GAAP, therefore we reduced the balance of U.S. oil and gas properties by the amount of these proceeds and we did not recognize a gain or loss.
	In August 2013, we completed the sale of our Southern Alberta Asset to Synergy. The purchase price was $46.0 million, which was subject to customary purchase price adjustments, resulting in a final purchase price of $42.3 million. We determined that the Synergy Transaction did not represent a significant disposal of reserves, therefore our U.S. oil and gas properties were reduced by these proceeds and we did not recognize a gain or a loss.
	In April 2013, we sold an undivided 25% interest in our Barnett Shale Asset to TGBR for a purchase price of $485 million. The effective date of the transaction was September 1, 2012. The purchase price was subject to customary price adjustments, which resulted in a final purchase price of $464.0 million. We recognized a gain of $341.1 million, which was subsequently adjusted in the second half of 2013 to $339.3 million, including a revision of the gain calculation in the third quarter of 2013 of $8.0 million, before consideration of income taxes based on our determination that the Tokyo Gas Transaction represented a significant disposal of reserves under GAAP. Our U.S. oil and gas properties were ultimately reduced through December 31, 2013 by $110.7 million as a result of the Tokyo Gas Transaction.
	Note 3 to the consolidated financial statements in our 2013 Annual Report on Form 10-K contains additional information on other divestitures.

Derivatives_And_Fair_Value_Mea

Derivatives And Fair Value Measurements	9 Months Ended
	Sep. 30, 2014
Credit Risk Derivatives, at Fair Value, Net [Abstract]	'
Derivatives And Fair Value Measurements	'
	DERIVATIVES, MARKETABLE SECURITIES AND FAIR VALUE MEASUREMENTS
	The following table categorizes our commodity derivative instruments based upon the level of the inputs used in estimating the fair value:
		Asset Derivatives							Liability Derivatives
		30-Sep-14				31-Dec-13			30-Sep-14			31-Dec-13
		(in thousands)							(in thousands)
	Level 2 derivative instruments	$	74,312			$	107,395		$	846		$	3,448
	Level 3 derivative instruments	17,754				23,485			—			—
	Total	$	92,066			$	130,880		$	846		$	3,448
	The fair value of “Level 2” derivative instruments included in these disclosures was estimated using inputs quoted in active markets for the periods covered by the derivatives. The fair value of derivative instruments designated as “Level 3” was estimated using prices quoted in markets where there is insufficient market activity for consideration as “Level 2” instruments. Currently, only our natural gas derivatives with an original tenure of 10 years utilize “Level 3” inputs, primarily due to comparatively less market data available for the later portion of their term compared with our other shorter term derivatives. The fair value of both the “Level 2” and the “Level 3” assets and liabilities are determined using a discounted cash flow model using the terms of the derivative instrument, market prices for the periods covered by the derivatives, and the credit adjusted risk-free interest rates. The “Level 3” unobservable input is the market prices for natural gas for the period from 2018 to 2021, as there is not an active market for that period of time. These unobservable inputs included within the fair value calculation range from $3.85 to $4.90 and are based upon prices quoted in active markets for the period of time available. A decrease of these unobservable inputs would increase the fair value, while an increase would decrease the fair value.
	The following table identifies the changes in “Level 3” net asset derivative fair values for the periods indicated:
		For the Three Months Ended
		September 30,
		2014				2013
		(in thousands)
	Balance at beginning of period	$	(5,533	)		$	(9,873	)
	Total gains (losses) for the period:
	Unrealized gain (loss) on derivatives	24,829				24,080
	Settlements in net derivative gains (losses)	(1,542		)		(3,302		)
	Balance at end of period	$	17,754			$	10,905
	Total gains (losses) included in net derivative gains (losses) attributable to the change in unrealized gains (losses) related to assets still held at the reporting date	$	24,485			$	24,026
		For the Nine Months Ended
		September 30,
		2014				2013
		(in thousands)
	Balance at beginning of period	$	23,485			$	(4,931	)
	Total gains (losses) for the period:
	Unrealized gain (loss) on derivatives	(6,488		)		24,618
	Settlements in net derivative gains (losses)	757				(8,782		)
	Balance at end of period	$	17,754			$	10,905
	Total gains (losses) included in net derivative gains (losses) attributable to the change in unrealized gains (losses) related to assets still held at the reporting date	$	(2,476	)		$	26,788
	Commodity Price Derivatives
	As of September 30, 2014, we had natural gas swaps as follows:
	Production		Daily Production
	Year		Volume
			Natural Gas		Natural Gas Basis Swaps
			MMcfd		MMcfd
	Remaining 2014 (1)		170		40
	2015		150		—
	2016-2021		40		—
	(1)	Our natural gas basis swaps economically hedge the AECO basis adjustment from NYMEX.
	Effective December 31, 2012, we discontinued the use of hedge accounting. Changes in value subsequent to this date are recognized in net derivative gains (losses) in the period in which they occur. The net deferred hedge gain that was included in AOCI as of December 31, 2012 is being released into revenue from natural gas, NGL and oil production over the original term of the hedging relationship (through 2021). Gains from the effective portion of derivative assets and liabilities held in AOCI expected to be reclassified into earnings during the following twelve months will result in production revenue of $22.7 million net of income taxes.
	Interest Rate Derivatives
	In 2010, we executed early settlements of our interest rate swaps that were designated as fair value hedges. Upon the early settlements, we recorded the resulting gain as a fair value adjustment to our debt and began to recognize the deferred gain as a reduction of interest expense over the lives of the respective notes. During the nine months ended September 30, 2014 and 2013, we recognized $1.5 million and $11.5 million, respectively, of those deferred gains as a reduction of interest expense. Gains from the effective portion of these interest rate swaps expected to reduce interest expense during the following twelve months are $2.2 million.
	Fair Value Disclosures
	The estimated fair value of our derivative instruments at September 30, 2014 and December 31, 2013 were as follows:
		Asset Derivatives								Liability Derivatives
		30-Sep-14				31-Dec-13				30-Sep-14			31-Dec-13
		(in thousands)								(in thousands)
	Derivatives not designated as hedges:
	Commodity contracts reported in:
	Current derivative assets	$	66,278			$	60,063			$	180		$	2,540
	Noncurrent derivative assets	75,911				105,315				49,943			31,958
	Current derivative liabilities	—				—				846			3,125
	Noncurrent derivative liabilities	—				—				—			323
	Total derivatives not designated as hedges	$	142,189			$	165,378			$	50,969		$	37,946
	Derivative assets and liabilities shown in the table above are presented as gross assets and liabilities, without regard to master netting arrangements, which are considered in the presentation of derivative assets and liabilities in the accompanying condensed consolidated balance sheets. The change in carrying value of our commodity price derivatives since December 31, 2013 principally resulted from the overall increase in market prices for natural gas relative to the prices in our open derivative instruments, offset by settlements during the period.
	Financial instruments not carried at fair value
	Carrying values and fair values of financial instruments that are not carried at fair value in the consolidated balance sheets as of September 30, 2014 and December 31, 2013 are included in Note 5.
	Investments
	We hold certain short-term marketable securities related to interest bearing time deposits and commercial paper. These marketable securities are included in Cash and Cash Equivalents if the maturities at the time we made the investment were three months or less. For maturities greater than three months but less than a year, the marketable securities are included in current Marketable Securities. During June 2014, we sold $10.0 million and transferred $10.0 million of held-to-maturity marketable securities to available-for-sale. Proceeds from these sales were used to reduce the outstanding balance on the Combined Credit Agreements. The estimated fair value of available-for-sale marketable securities is determined using market quotations based on recent trade activity (“Level 2” inputs). At September 30, 2014 we did not own any marketable securities. At December 31, 2013, we had the following marketable securities:
		31-Dec-13
		Amortized Cost				Gross Unrealized Gains			Gross Unrealized Losses			Fair Market Value
		(in thousands)
Marketable securities (held-to-maturity)
Time deposits	$	29,419			$	—		$	(22	)	$	29,397
Commercial paper	136,924				27			(25		)	136,926
Marketable securities	$	166,343			$	27		$	(47	)	$	166,323

Property_Plant_And_Equipment

Property, Plant And Equipment	9 Months Ended
	Sep. 30, 2014
Property, Plant and Equipment [Abstract]	'
Property, Plant And Equipment	'
	PROPERTY, PLANT AND EQUIPMENT
	Property, plant and equipment consisted of the following:
		30-Sep-14			31-Dec-13
		(in thousands)
	Oil and gas properties
	Subject to depletion	$	5,635,307		$	5,687,557
	Unevaluated costs	218,398			221,605
	Accumulated depletion	(5,245,133		)	(5,268,719		)
	Net oil and gas properties	608,572			640,443
	Other property and equipment
	Pipelines and processing facilities	332,710			347,093
	General properties	71,049			72,125
	Accumulated depreciation	(199,851		)	(198,856		)
	Net other property and equipment	203,908			220,362
	Property, plant and equipment, net of accumulated depletion and depreciation	$	812,480		$	860,805
	We recognized other property and equipment impairment charges of $0.1 million in 2014 for pipeline in Texas.

LongTerm_Debt

Long-Term Debt	9 Months Ended
	Sep. 30, 2014
Long-term Debt, Other Disclosures [Abstract]	'
Long-Term Debt	'
	LONG-TERM DEBT
	Long-term debt consisted of the following:
		30-Sep-14			31-Dec-13
		(in thousands)
	Combined Credit Agreements	$	275,966		$	211,200
	Second Lien Term Loan, net of unamortized discount	609,555			607,572
	Second Lien Notes due 2019, net of unamortized discount	195,058			194,423
	Senior notes due 2015, net of unamortized discount	—			10,472
	Senior notes due 2016, net of unamortized discount	—			8,044
	Senior notes due 2019, net of unamortized discount	293,744			293,243
	Senior notes due 2021, net of unamortized discount	310,229			309,190
	Senior subordinated notes due 2016	350,000			350,000
	Total debt	2,034,552			1,984,144
	Unamortized deferred gain-terminated interest rate swaps	3,292			4,802
	Long-term debt	$	2,037,844		$	1,988,946
	Combined Credit Agreements
	The Combined Credit Agreements’ global borrowing base was $325 million and the global letter of credit capacity was $280 million as of September 30, 2014. At September 30, 2014, we had $6.7 million available under the Combined Credit Agreements.
	In November 2014, the Combined Credit Agreements' global borrowing base was reaffirmed at $325 million and the Combined Credit Agreements were amended to eliminate the requirement to meet the minimum interest coverage ratio covenant beginning in the fourth quarter of 2014 through and including the fourth quarter of 2015. A minimum EBITDAX covenant was added beginning in the fourth quarter of 2014 through and including the fourth quarter of 2015 that requires the following minimum EBITDAX levels:
		Minimum EBITDAX Covenant
		(in millions)
	Three months ending December 31, 2014	$	30
	Six months ending March 31, 2015	59
	Nine months ending June 30, 2015	87.25
	Twelve months ending September 30, 2015	120.5
	Twelve months ending December 31, 2015	122
	Additionally, the Combined Credit Agreements were amended changing certain definitions that impact the calculation of EBITDAX in both the November 2014 amendment and the April 2014 amendment and we permanently reduced the aggregate maximum credit amounts under the Combined Credit Agreements from $1.75 billion to $650 million in April 2014 and to $450 million in November 2014.
	Senior Notes due 2015 and Senior Notes due 2016
	In April 2014, we redeemed all remaining outstanding notes under our Senior Notes due 2015 and Senior Notes due 2016. Our Senior Notes due 2015 were redeemed at 101.938% of the principal amount plus accrued and unpaid interest representing a total payment of $10.9 million and our Senior Notes due 2016 were redeemed at 105.875% of the principal amount plus accrued and unpaid interest representing a total payment of $8.9 million.
	Indenture Restrictions
	We have an incurrence test under our indentures applicable to debt, restricted payments, mergers and consolidations and designation of unrestricted subsidiaries that requires EBITDA to exceed interest expense by 2.25 times. At September 30, 2014, we did not meet this test and, as a result, we are limited in our ability to, among other things, incur additional debt, except for specific baskets. We do retain, however, the ability to utilize the full borrowing capacity under our Combined Credit Agreements and to refinance existing debt. Not meeting this ratio does not represent an event of default under our debt. We cannot predict when or if we will meet the incurrence test.
	We retained a portion of the cash received from our asset sales. Our indentures require us to reinvest or repay senior debt with net cash proceeds from certain asset sales within one year.
	Summary of All Outstanding Debt
	The following table summarizes certain significant aspects of our long-term debt outstanding at September 30, 2014.
			Priority on Collateral and Structural Seniority (1)
			Highest						Lowest
			priority						priority
			First Lien	Second Lien			Senior Unsecured		Senior Subordinated
			Combined Credit	Second Lien Term Loan		Second Lien Notes due 2019	2019	2021	Senior
			Agreements				Senior Notes	Senior Notes	Subordinated Notes
	Principal amount (1) (2)		$325 million	$625 million		$200 million	$298 million	$325 million	$350 million
	Scheduled maturity date (3)		September 6, 2016	June 21, 2019		June 21, 2019	August 15, 2019	July 1, 2021	April 1, 2016
	Springing maturity date (3)		1-Oct-15	1-Jan-16		1-Jan-16	N/A	N/A	N/A
	Interest rate on outstanding borrowings at September 30, 2014 (4)		4.09%	7.00%		7.00%	9.13%	11.00%	7.12%
	Base interest rate		LIBOR, ABR, CDOR	LIBOR floor of 1.25%; ABR floor of 2.25%		LIBOR floor of 1.25%	N/A	N/A	N/A
	options (5) (6)
	Financial covenants (7) (9)		- Minimum current ratio of 1.0	N/A		N/A	N/A	N/A	N/A
			- Minimum EBITDA to cash interest expense ratio of 1.10
			- Maximum senior secured debt leverage ratio of 2.0
	Significant restrictive covenants (8)(9)		- Incurrence of debt	- Incurrence of debt		- Incurrence of debt	- Incurrence of debt	- Incurrence of debt	- Incurrence of debt
			- Incurrence of liens	- Incurrence of liens and 1st lien cap		- Incurrence of liens and 1st lien cap	- Incurrence of liens	- Incurrence of liens	- Incurrence of liens
			- Payment of dividends	-Payment of dividends		-Payment of dividends	-Payment of dividends	-Payment of dividends	-Payment of dividends
			- Equity purchases	- Equity purchases		- Equity purchases	- Equity purchases	- Equity purchases	- Equity purchases
			- Asset sales	- Asset sales		- Asset sales	- Asset sales	- Asset sales	- Asset sales
			- Affiliate transactions	- Affiliate transactions		- Affiliate transactions	- Affiliate transactions	- Affiliate transactions	- Affiliate transactions
			- Limitations on derivatives and investments
	Optional redemption (9)		Any time	Any time, subject to re-pricing event		Any time, subject to re-pricing event	August 15,	July 1,	Any time
				June 21,		June 21,	2014: 104.563	2019: 102.000
				2015: 101		2015: 101	2015: 103.042	2020: par
							2016: 101.521
							2017: par
	Make-whole redemption (9)		N/A	N/A		N/A	N/A	Callable prior	N/A
								to July 1, 2019
								at make-whole
call price of
Treasury +50 bps
Change of control (9)		Event of default	Put at 101%		Put at 101%	Put at 101%	Put at 101%	Put at 101%
			of principal		of principal	of principal	of principal	of principal
			plus accrued		plus accrued	plus accrued	plus accrued	plus accrued
			interest		interest	interest	interest	interest
Equity clawback (9)		N/A	N/A		N/A	N/A	Redeemable until	N/A
							1-Jul-16
							at 111.00%,
							plus accrued
							interest for
							up to 35%
Estimated fair value (10)		$276.0 million	$568.8 million		$182.0 million	$186.3 million	$213.7 million	$136.5 million
(1)	Borrowings under the Amended and Restated U.S. Credit Facility, Second Lien Term Loan and Second Lien Notes due 2019 are guaranteed by certain of Quicksilver’s domestic subsidiaries and are secured (on a first priority basis with respect to the Amended and Restated U.S. Credit Facility and on a second priority basis with respect to the Second Lien Term Loan and the Second Lien Notes due 2019) by 100% of the equity interests of each of Cowtown Pipeline Management, Inc., Cowtown Pipeline Funding, Inc., Cowtown Gas Processing L.P., Cowtown Pipeline L.P., Barnett Shale Operating LLC, Silver Stream Pipeline Company LLC, QPP Parent LLC and QPP Holdings LLC (collectively, the “Domestic Pledged Equity”), 65% of the equity interests of Quicksilver Resources Canada Inc. (“Quicksilver Canada”) and Quicksilver Production Partners Operating Ltd. (with respect to the Amended and Restated U.S. Credit Facility, on a ratable basis with borrowings under the Amended and Restated Canadian Credit Facility) and the majority of Quicksilver's domestic proved oil and gas properties and related assets, (the “Domestic Pledged Property”). Borrowings under the Amended and Restated Canadian Credit Facility are guaranteed by Quicksilver and certain of its domestic subsidiaries and are secured by the Domestic Pledged Equity, the Domestic Pledged Property, 100% of the equity interests of Quicksilver Canada (65% of which is on a ratable basis with the borrowings under the Amended and Restated U.S. Credit Facility) and any Canadian restricted subsidiaries, under the Amended and Restated Canadian Credit Facility, and 65% of the equity interests of Quicksilver Production Partners Operating Ltd. (which is on a ratable basis with the borrowings under the Amended and Restated U.S. Credit Facility) and the majority of Quicksilver Canada's oil and gas properties and related assets. The other debt presented is based upon structural seniority and priority of payment.
(2)	The principal amount for the Combined Credit Agreements represents the global borrowing base as of September 30, 2014.
(3)	The Combined Credit Agreements are required to be repaid 91 days prior to the maturity of the Senior Subordinated Notes, the Second Lien Term Loan or the Second Lien Notes due 2019, if on the applicable date any amount of such debt remains outstanding. The Second Lien Term Loan and Second Lien Notes due 2019 are required to be repaid (1) 91 days prior to the maturity of the 2019 Senior Notes if more than $100 million of the 2019 Senior Notes remain outstanding and (2) 91 days prior to the maturity of the Senior Subordinated Notes if on the applicable date the amount remaining outstanding is greater than $100 million. As of September 30, 2014, as presently structured and assuming no changes in the amounts outstanding, amounts outstanding under the Combined Credit Agreements would be due on October 1, 2015 and the Second Lien Term Loan and Second Lien Notes due 2019 would be due on January 1, 2016.
(4)	Represents the weighted average borrowing rate payable to lenders.
(5)	Amounts outstanding under the Amended and Restated U.S. Credit Facility bear interest, at our election, at (i) adjusted LIBOR (as defined in the Amended and Restated U.S. Credit Facility) plus an applicable margin between 2.75% and 3.75%, (ii) ABR (as defined in the Amended and Restated U.S. Credit Facility), which is the greatest of (a) the prime rate announced by JPMorgan, (b) the federal funds rate plus 0.50% and (c) adjusted LIBOR for an interest period of one month plus 1.00%, plus, in each case under scenario (ii), an applicable margin between 1.75% and 2.75%. We also pay a per annum fee on the LC Exposure (as defined in the Amended and Restated U.S. Credit Facility) of all letters of credit issued under the Amended and Restated U.S. Credit Facility equal to the applicable margin, with respect to Eurodollar loans, and a commitment fee on the unused availability under the Amended and Restated U.S. Credit Facility of 0.50%.
(6)	Amounts outstanding under the Amended and Restated Canadian Credit Facility bear interest, at our election, at (i) the CDOR Rate (as defined in the Amended and Restated Canadian Credit Facility) plus an applicable margin between 2.75% and 3.75%, (ii) the Canadian Prime Rate (as defined in the Amended and Restated Canadian Credit Facility) plus an applicable margin between 1.75% and 2.75%, (iii) the U.S. Prime Rate (as defined in the Amended and Restated Canadian Credit Facility) plus an applicable margin between 1.75% and 2.75% and (iv) adjusted LIBOR (as defined in the Amended and Restated Canadian Credit Facility) plus an applicable margin between 2.75% and 3.75%. We pay a per annum fee on the LC Exposure (as defined in the Amended and Restated Canadian Credit Facility) of all letters of credit issued under the Amended and Restated Canadian Credit Facility equal to the applicable margin, with respect to Eurodollar loans, and a commitment fee on the unused availability under the Amended and Restated Canadian Credit Facility of 0.50%.
(7)	As of September 30, 2014, the future minimum required interest coverage ratio for the Combined Credit Agreements is as follows:
Period		Interest Coverage Ratio	Period		Interest Coverage Ratio
Q4 2014		1.1	Q4 2015		1.2
Q1 2015		1.1	Q1 2016		1.5
Q2 2015		1.15	Q2 2016		2
Q3 2015		1.15
In November 2014, the Combined Credit Agreements were amended to eliminate the requirement to meet the minimum interest coverage ratio covenant beginning in the fourth quarter of 2014 through and including the fourth quarter of 2015. A minimum EBITDAX covenant was added beginning in the fourth quarter of 2014 through and including the fourth quarter of 2015 that requires the following minimum EBITDAX levels:
	Minimum EBITDAX Covenant
	(in millions)
Three months ending December 31, 2014	$	30
Six months ending March 31, 2015	59
Nine months ending June 30, 2015	87.25
Twelve months ending September 30, 2015	120.5
Twelve months ending December 31, 2015	122
(8)	Our indentures require us to reinvest or repay senior debt with net cash proceeds from certain asset sales within one year.
(9)	The information presented in this table is qualified in all respects by reference to the full text of the covenants, provisions and related definitions contained in the documents governing the various components of our debt.
(10)	The estimated fair value is determined using market quotations based on recent trade activity for fixed rate obligations (“Level 2” inputs). Our Second Lien Term Loan and Second Lien Notes due 2019 feature variable interest rates and we estimate their fair value by using market quotations based on recent trade activity (“Level 3” input). We consider our Combined Credit Agreements which have a variable interest rate to have a fair value equal to their carrying value (“Level 1” input).

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	INCOME TAXES
	Note 13 to the consolidated financial statements in our 2013 Annual Report on Form 10-K contains additional information about our income taxes. At September 30, 2014, our U.S. and Canadian valuation allowances are $372.0 million and $60.7 million, respectively, which reduce our net deferred tax assets to a zero value as we continue to believe that it is not more likely than not that we will realize the deferred tax assets primarily related to our cumulative net operating losses. Income tax recognized for the three and nine months ended September 30, 2014 is a result of hedge gains previously deferred in AOCI being realized during the periods and the net tax impact being recognized, partially offset by a refund of $7.6 million filed in September 2014.

Commitments_And_Contingencies

Commitments And Contingencies	9 Months Ended
	Sep. 30, 2014
Loss Contingency [Abstract]	'
Commitments And Contingencies	'
	COMMITMENTS AND CONTINGENCIES
	In each of July 2011 and June 2012, we received a subpoena duces tecum from the SEC requesting certain documents. In July 2014, the SEC notified us that the staff has completed its investigation and does not intend to recommend an enforcement action by the SEC against us.
	Note 14 to the consolidated financial statements in our 2013 Annual Report on Form 10-K contains a more complete description of our contractual obligations, commitments and contingencies for which there are no other significant updates during the quarter ended September 30, 2014.

Fortune_Creek

Fortune Creek	9 Months Ended
	Sep. 30, 2014
Equity Method Investments and Joint Ventures [Abstract]	'
Fortune Creek	'
	FORTUNE CREEK
	Note 15 to the consolidated financial statements in our 2013 Annual Report on Form 10-K contains additional information on Fortune Creek. In March 2014, we agreed with KKR to an amendment to extend the ending date of the minimum gross capital expenditures requirement, of which C$120 million remains, to the earlier of June 30, 2016 or 12 months following consummation of a transaction involving a material portion of our Horn River Asset and to broaden allowable spending to include acquisitions of producing properties that utilize partnership assets. As part of the amendment, we contributed C$28 million to Fortune Creek which was subsequently distributed to KKR and was applied against the gathering agreement requirement. The effect of this contribution was to reduce the balance of the partnership liability and to reduce the gathering rate that burdens our Horn River Asset production by C$0.13 per Mcf until at least 2016. We do not expect to be able to satisfy these capital expenditure requirements with our cash on hand, committed financing or cash flow from operations and will need to obtain additional debt or equity financing or sell assets, which we may not be able to do on satisfactory terms, or at all.
	We committed gas production from our Horn River Asset for ten years beginning 2012, as more fully described below. KKR contributed C$125 million cash in exchange for a 50% interest in Fortune Creek. Our Canadian subsidiary has responsibility for the day-to-day operations of Fortune Creek.
	The firm gathering agreement with Fortune Creek is guaranteed by us. If our subsidiary does not meet its obligations under the gathering agreement, KKR has the right to liquidate the partnership and consequently we have recorded the funds contributed by KKR as a liability in our consolidated financial statements. We recognize accretion expense to reflect the rate of return earned by KKR via its investment. Fortune Creek has made cash distributions to KKR, which are reported as cash used in financing activities.
	Based on a quarterly analysis of the partners’ equity at risk, we have determined the partnership to be a VIE. Further, based on our ability to direct the activities surrounding the production of natural gas and our direct management of the operations of the Fortune Creek facilities, we have determined we are the primary beneficiary and, therefore, we consolidate Fortune Creek.

Quicksilver_Stockholders_Equit

Quicksilver Stockholders' Equity	9 Months Ended
	Sep. 30, 2014
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]	'
Quicksilver Stockholders' Equity	'
	QUICKSILVER STOCKHOLDERS’ EQUITY
	Common Stock, Preferred Stock and Treasury Stock
	We are authorized to issue 400 million shares of common stock with a $0.01 par value per share and 10 million shares of preferred stock with a $0.01 par value per share. At September 30, 2014 and December 31, 2013, we had 179.8 million and 177.3 million shares of common stock outstanding, respectively.
	Stock Options
	No options have been granted during 2014. The following summarizes the values from and assumptions for the Black-Scholes option pricing model for stock options issued during the nine months ended September 30, 2013:
	Weighted avg grant date fair value	$1.05
	Weighted avg risk-free interest rate	1.31%
	Expected life	4.9 years
	Wtd avg volatility	69.00%
	Expected dividends	—
	The following table summarizes our stock option activity for the nine months ended September 30, 2014:
		Shares		Weighted		Weighted		Aggregate
				Average		Average		Intrinsic
				Exercise		Remaining		Value
				Price		Contractual Life
						(in years)		(in thousands)
	Outstanding at January 1, 2014	6,771,578		$	7.82
	Forfeited	(44,950	)	1.65
	Expired	(111,494	)	9.83
	Outstanding at September 30, 2014	6,615,134		$	7.83	5.4		$	—
	Exercisable at September 30, 2014	5,232,903		$	9.18	4.6		$	—
	As of September 30, 2014, we estimate that a total of 6.3 million stock options will vest including those options already exercisable. As of September 30, 2014, the unrecognized compensation cost related to outstanding unvested stock options was $1.0 million, which is expected to be recognized in expense through August 2016. Compensation expense related to stock options of $1.1 million and $3.2 million was recognized for the nine months ended September 30, 2014 and 2013, respectively.
	Restricted Stock and Stock Units
	The following table summarizes our restricted stock and stock unit activity for the nine months ended September 30, 2014:
		Payable in shares				Payable in cash
		Shares		Weighted		Shares			Weighted
				Average					Average
				Grant Date					Grant Date
				Fair Value					Fair Value
	Outstanding at January 1, 2014	5,668,090		$	3.9	1,572,341			$	3.69
	Granted	4,765,425		2.64		—			—
	Vested	(2,559,959	)	4.86		(631,275	)		4.29
	Forfeited	(348,554	)	3.09		(33,458	)		3.2
	Outstanding at September 30, 2014	7,525,002		$	2.82	907,608			$	3.32
	As of September 30, 2014, the unrecognized compensation cost related to outstanding unvested restricted stock was $14.8 million, which is expected to be recognized in expense through July 2017. Grants of restricted stock and RSUs during the nine months ended September 30, 2014 had an estimated grant date fair value of $12.6 million. The fair value of outstanding RSUs to be settled in cash was $0.5 million at September 30, 2014. For the nine months ended September 30, 2014 and 2013, compensation expense related to restricted stock and RSUs of $8.4 million and $12.2 million, respectively, was recognized. The total fair value of shares vested during the nine months ended September 30, 2014 was $10.2 million.

Earnings_Per_Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	EARNINGS PER SHARE
	The following is a reconciliation of the numerator and denominator used for the computation of basic and diluted net income (loss) per common share.
		For the Three Months Ended						For the Nine Months Ended
		September 30,						September 30,
		2014			2013			2014			2013
		(in thousands, except per share data)
	Net income (loss) attributable to Quicksilver	$	23,757		$	10,577		$	(71,171	)	$	193,397
	Basic income allocable to participating securities (1)	(772		)	(312		)	—			(5,111		)
	Income (loss) available to shareholders	$	22,985		$	10,265		$	(71,171	)	$	188,286
	Weighted average common shares – basic	173,936			171,682			173,783			171,403
	Effect of dilutive securities (2)
	Share-based compensation awards	216			311			—			170
	Weighted average common shares – diluted	174,152			171,993			173,783			171,573
	Earnings (loss) per common share – basic	$	0.13		$	0.06		$	(0.41	)	$	1.1
	Earnings (loss) per common share – diluted	$	0.13		$	0.06		$	(0.41	)	$	1.1
	(1)	Restricted share awards that contain nonforfeitable rights to dividends are participating securities and, therefore, should be included in computing earnings per share using the two-class method. Participating securities, however, do not participate in undistributed net losses because there is no contractual obligation to do so.
	(2)	For the three months ended September 30, 2014, 6.6 million shares associated with our stock options and 1.2 million shares associated with our unvested RSUs were antidilutive and, therefore, excluded from the diluted share calculations. For the three months ended September 30, 2013, 6.2 million shares associated with our stock options and 0.2 million shares associated with our unvested RSUs were antidilutive and, therefore, excluded from the diluted share calculations. For the nine months ended September 30, 2014, 6.6 million shares associated with our stock options and 0.8 million shares associated with our unvested RSUs were antidilutive and, therefore, excluded from the diluted share calculations. For the nine months ended September 30, 2013, 5.5 million shares associated with our stock options and 0.2 million shares associated with our unvested RSUs were antidilutive and, therefore, excluded from the diluted share calculations.

Condensed_Consolidating_Financ

Condensed Consolidating Financial Information	9 Months Ended
	Sep. 30, 2014
Condensed Consolidating Financial Information [Abstract]	'
Condensed Consolidating Financial Information	'
	CONDENSED CONSOLIDATING FINANCIAL INFORMATION
	Note 18 to the consolidated financial statements in our 2013 Annual Report on Form 10-K contains a more complete description of our guarantor, non-guarantor, restricted and unrestricted subsidiaries under the indentures for our Senior Notes and Senior Subordinated Notes.
	The following tables present financial information about Quicksilver and our restricted subsidiaries for the three- and nine-month periods covered by the condensed consolidated financial statements. Under the indentures for our Senior Notes and Senior Subordinated Notes, Fortune Creek is not considered to be a subsidiary and therefore it is presented separately from the other subsidiaries for these purposes.
	Condensed Consolidating Balance Sheets
		30-Sep-14
		Quicksilver			Restricted			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Consolidated			Quicksilver
		Resources			Guarantor			Non-			Subsidiary			and			Non-			Creek			Eliminations			Resources Inc.
		Inc.			Subsidiaries			Guarantor			Eliminations			Restricted			Guarantor									Consolidated
								Subsidiaries						Subsidiaries			Subsidiaries
		(in thousands)
	ASSETS
	Current assets	$	338,424		$	13,096		$	65,733		$	(23,193	)	$	394,060		$	(455	)	$	1,746		$	949		$	396,300
	Property and equipment	417,921			14,625			305,197			—			737,743			—			74,737			—			812,480
	Investment in subsidiaries (equity method)	(227,994		)	—			(23,409		)	227,994			(23,409		)	(23,429		)	—			46,838			—
	Other assets	457,285			—			15,473			(413,281		)	59,477			—			—			—			59,477
	Total assets	$	985,636		$	27,721		$	362,994		$	(208,480	)	$	1,167,871		$	(23,884	)	$	76,483		$	47,787		$	1,268,257
	LIABILITIES AND EQUITY
	Current liabilities	$	103,042		$	13,401		$	11,064		$	(23,193	)	$	104,314		$	(475	)	$	3,736		$	949		$	108,524
	Long-term liabilities	1,980,078			19,241			575,003			(413,281		)	2,161,041			—			1,525			94,651			2,257,217
	Stockholders' equity	(1,097,484		)	(4,921		)	(223,073		)	227,994			(1,097,484		)	(23,409		)	71,222			(47,813		)	(1,097,484		)
	Total liabilities and equity	$	985,636		$	27,721		$	362,994		$	(208,480	)	$	1,167,871		$	(23,884	)	$	76,483		$	47,787		$	1,268,257
		December 31, 2013
		Quicksilver			Restricted			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Consolidated			Quicksilver
		Resources			Guarantor			Non-			Subsidiary			and			Non-			Creek			Eliminations			Resources
		Inc.			Subsidiaries			Guarantor			Eliminations			Restricted			Guarantor									Inc.
								Subsidiaries						Subsidiaries			Subsidiaries									Consolidated
		(in thousands)
	ASSETS
	Current assets	$	349,586		$	10,735		$	53,034		$	(19,642	)	$	393,713		$	909		$	1,110		$	(1,772	)	$	393,960
	Property and equipment	455,822			15,486			307,865			—			779,173			—			81,632			—			860,805
	Investment in subsidiaries (equity method)	(217,852		)	—			(33,840		)	217,852			(33,840		)	(33,840		)	—			67,680			—
	Other assets	472,792			—			32,892			(390,723		)	114,961			—			—			—			114,961
	Total assets	$	1,060,348		$	26,221		$	359,951		$	(192,513	)	$	1,254,007		$	(32,931	)	$	82,742		$	65,908		$	1,369,726
	LIABILITIES AND EQUITY
	Current liabilities	$	124,275		$	12,210		$	17,167		$	(19,642	)	$	134,010		$	888		$	1,671		$	(1,772	)	$	134,797
	Long-term liabilities	1,942,043			19,242			542,659			(390,723		)	2,113,221			—			1,546			126,132			2,240,899
	Stockholders' equity	(1,005,970		)	(5,231		)	(199,875		)	217,852			(993,224		)	(33,819		)	79,525			(58,452		)	(1,005,970		)
	Total liabilities and equity	$	1,060,348		$	26,221		$	359,951		$	(192,513	)	$	1,254,007		$	(32,931	)	$	82,742		$	65,908		$	1,369,726
	Condensed Consolidating Statements of Income
		For the Three Months Ended September 30, 2014
		Quicksilver			Restricted			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Consolidated			Quicksilver
		Resources Inc.			Guarantor			Non-			Subsidiary			and			Non-			Creek			Eliminations			Resources Inc.
					Subsidiaries			Guarantor			Eliminations			Restricted			Guarantor									Consolidated
								Subsidiaries						Subsidiaries			Subsidiaries
		(in thousands)
	Revenue	$	120,513		$	427		$	42,558		$	—		$	163,498		$	—		$	4,271		$	(4,271	)	$	163,498
	Operating expenses	72,868			341			27,648			—			100,857			—			2,128			(4,271		)	98,714
	Equity in net earnings of subsidiaries	8,821			—			(1,458		)	(8,821		)	(1,458		)	2,144			—			(686		)	—
	Operating income (loss)	56,466			86			13,452			(8,821		)	61,183			2,144			2,143			(686		)	64,784
	Fortune Creek accretion	—			—			—			—			—			—			—			(3,602		)	(3,602		)
	Interest expense and other	(37,613		)	86			(4,838		)	—			(42,365		)	—			1			—			(42,364		)
	Income tax (expense) benefit	4,826			(30		)	65			78			4,939			—			—			—			4,939
	Net income (loss)	$	23,679		$	142		$	8,679		$	(8,743	)	$	23,757		$	2,144		$	2,144		$	(4,288	)	$	23,757
	Other comprehensive income (loss)	(11,564		)	—			(3,325		)	—			(14,889		)	—			—			—			(14,889		)
	Equity in OCI of subsidiaries	(3,325		)	—			—			3,325			—			—			—			—			—
	Comprehensive income (loss)	$	8,790		$	142		$	5,354		$	(5,418	)	$	8,868		$	2,144		$	2,144		$	(4,288	)	$	8,868
		For the Three Months Ended September 30, 2013
		Quicksilver			Restricted			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Consolidated			Quicksilver
		Resources Inc.			Guarantor			Non-			Subsidiary			and			Non-			Creek			Eliminations			Resources Inc.
					Subsidiaries			Guarantor			Eliminations			Restricted			Guarantor									Consolidated
								Subsidiaries						Subsidiaries			Subsidiaries
		(in thousands)
	Revenue	$	114,021		$	192		$	38,903		$	—		$	153,116		$	—		$	5,674		$	(5,674	)	$	153,116
Operating expenses	73,594			68			30,360			—			104,022			—			2,693			(5,674		)	101,041
Tokyo Gas Transaction gain	7,974			—			—			—			7,974			—			—			—			7,974
Equity in net earnings of subsidiaries	3,854			—			(1,834		)	(3,854		)	(1,834		)	2,984			—			(1,150		)	—
Operating income (loss)	52,255			124			6,709			(3,854		)	55,234			2,984			2,981			(1,150		)	60,049
Fortune Creek accretion	—			—			—			—			—			—			—			(4,818		)	(4,818		)
Interest expense and other	(36,922		)	—			(1,769		)	—			(38,691		)	—			3			—			(38,688		)
Income tax (expense) benefit	(4,756		)	—			(1,210		)	—			(5,966		)	—			—			—			(5,966		)
Net income (loss)	$	10,577		$	124		$	3,730		$	(3,854	)	$	10,577		$	2,984		$	2,984		$	(5,968	)	$	10,577
Other comprehensive income (loss)	(6,114		)	—			(2,680		)	—			(8,794		)	—			—			—			(8,794		)
Equity in OCI of subsidiaries	(2,680		)	—			—			2,680			—			—			—			—			—
Comprehensive income (loss)	$	1,783		$	124		$	1,050		$	(1,174	)	$	1,783		$	2,984		$	2,984		$	(5,968	)	$	1,783
	For the Nine Months Ended September 30, 2014
	Quicksilver			Restricted			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Consolidated			Quicksilver
	Resources Inc.			Guarantor			Non-			Subsidiary			and			Non-			Creek			Eliminations			Resources Inc.
				Subsidiaries			Guarantor			Eliminations			Restricted			Guarantor									Consolidated
							Subsidiaries						Subsidiaries			Subsidiaries
	(in thousands)
Revenue	$	269,321		$	1,212		$	102,783		$	—		$	373,316		$	—		$	13,349		$	(13,349	)	$	373,316
Operating expenses	225,906			988			86,491			—			313,385			—			6,014			(13,349		)	306,050
Equity in net earnings of subsidiaries	2,864			—			(4,266		)	(2,864		)	(4,266		)	7,339			—			(3,073		)	—
Operating income (loss)	46,279			224			12,026			(2,864		)	55,665			7,339			7,335			(3,073		)	67,266
Fortune Creek accretion	—			—			—			—			—			—			—			(11,605		)	(11,605		)
Interest expense and other	(117,315		)	86			(8,526		)	—			(125,755		)	—			4			—			(125,751		)
Income tax (expense) benefit	(213		)	(78		)	(868		)	78			(1,081		)	—			—			—			(1,081		)
Net income (loss)	$	(71,249	)	$	232		$	2,632		$	(2,786	)	$	(71,171	)	$	7,339		$	7,339		$	(14,678	)	$	(71,171	)
Other comprehensive income (loss)	(20,252		)	—			(6,849		)	—			(27,101		)	—			—			—			(27,101		)
Equity in OCI of subsidiaries	(6,849		)	—			—			6,849			—			—			—			—			—
Comprehensive income (loss)	$	(98,350	)	$	232		$	(4,217	)	$	4,063		$	(98,272	)	$	7,339		$	7,339		$	(14,678	)	$	(98,272	)
	For the Nine Months Ended September 30, 2013
	Quicksilver			Restricted			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Consolidated			Quicksilver
	Resources Inc.			Guarantor			Non-			Subsidiary			and			Non-			Creek			Eliminations			Resources Inc.
				Subsidiaries			Guarantor			Eliminations			Restricted			Guarantor									Consolidated
							Subsidiaries						Subsidiaries			Subsidiaries
	(in thousands)
Revenue	$	334,848		$	608		$	111,862		$	—		$	447,318		$	—		$	16,736		$	(16,736	)	$	447,318
Operating expenses	256,810			206			89,559			—			346,575			—			7,552			(16,736		)	337,391
Tokyo Gas Transaction gain	341,146			—			—			—			341,146			—			—			—			341,146
Equity in net earnings of subsidiaries	(9,227		)	—			(5,300		)	9,227			(5,300		)	9,190			—			(3,890		)	—
Operating income (loss)	409,957			402			17,003			9,227			436,589			9,190			9,184			(3,890		)	451,073
Fortune Creek accretion	—			—			—			—			—			—			—			(14,490		)	(14,490		)
Interest expense and other	(200,639		)	—			(24,490		)	—			(225,129		)	—			6			—			(225,123		)
Income tax (expense) benefit	(15,921		)	—			(2,142		)	—			(18,063		)	—			—			—			(18,063		)
Net income (loss)	$	193,397		$	402		$	(9,629	)	$	9,227		$	193,397		$	9,190		$	9,190		$	(18,380	)	$	193,397
Other comprehensive income (loss)	(29,014		)	—			(9,100		)	—			(38,114		)	—			—			—			(38,114		)
Equity in OCI of subsidiaries	(9,100		)	—			—			9,100			—			—			—			—			—
Comprehensive income (loss)	$	155,283		$	402		$	(18,729	)	$	18,327		$	155,283		$	9,190		$	9,190		$	(18,380	)	$	155,283
Condensed Consolidating Statements of Cash Flows
	For the Nine Months Ended September 30, 2014
	Quicksilver			Restricted			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Consolidated			Quicksilver
	Resources Inc.			Guarantor			Non-Guarantor			Subsidiary			and			Non-Guarantor			Creek			Eliminations			Resources Inc.
				Subsidiaries			Subsidiaries			Eliminations			Restricted			Subsidiaries									Consolidated
													Subsidiaries
	(in thousands)
Net cash flow provided by (used in) operating activities	$	(39,474	)	$	(688	)	$	28,843		$	—		$	(11,319	)	$	—		$	6,336		$	—		$	(4,983	)
Purchases of property, plant and equipment	(88,119		)	(57		)	(23,247		)	—			(111,423		)	—			(21		)	—			(111,444		)
Investment in subsidiary	(1,246		)	—			(26,395		)	1,246			(26,395		)	(26,395		)	—			52,790			—
Proceeds from Southwestern Transaction	95,587			—			—			—			95,587			—			—			—			95,587
Proceeds from sale of properties and equipment	1,445			—			497			—			1,942			—			—			—			1,942
Purchases of marketable securities	(55,890		)	—			—			—			(55,890		)	—			—			—			(55,890		)
Maturities and sales of marketable securities	222,025			—			—			—			222,025			—			—			—			222,025
Net cash flow provided by (used in) investing activities	173,802			(57		)	(49,145		)	1,246			125,846			(26,395		)	(21		)	52,790			152,220
Issuance of debt	174,000			—			69,184			—			243,184			—			—			—			243,184
Repayments of debt	(138,651		)	—			(55,038		)	—			(193,689		)	—			—			—			(193,689		)
Debt issuance costs paid	(225		)	—			—			—			(225		)	—			—			—			(225		)
Intercompany note	(22,558		)	—			22,558			—			—			—			—			—			—
Intercompany financing	—			745			501			(1,246		)	—			—			—			—			—
Contribution received	—			—			—			—			—			26,395			26,395			(52,790		)	—
Distribution of Fortune Creek Partnership funds	—			—			—			—			—			—			(37,113		)	—			(37,113		)
Purchase of treasury stock	(2,388		)	—			—			—			(2,388		)	—			—			—			(2,388		)
Net cash flow provided by (used in) financing activities	10,178			745			37,205			(1,246		)	46,882			26,395			(10,718		)	(52,790		)	9,769
Effect of exchange rates on cash	—			—			(2,718		)	—			(2,718		)	—			4,934			—			2,216
Net increase (decrease) in cash and equivalents	144,506			—			14,185			—			158,691			—			531			—			159,222
Cash and equivalents at beginning of period	83,893			—			4,135			—			88,028			22			1,053			—			89,103
Cash and equivalents at end of period	$	228,399		$	—		$	18,320		$	—		$	246,719		$	22		$	1,584		$	—		$	248,325
	For the Nine Months Ended September 30, 2013
	Quicksilver			Restricted			Restricted			Quicksilver			Unrestricted Non-Guarantor Subsidiaries			Fortune			Quicksilver
	Resources Inc.			Guarantor			Non-Guarantor			and						Creek			Resources Inc.
				Subsidiaries			Subsidiaries			Restricted									Consolidated
										Subsidiaries
	(in thousands)
Net cash flow provided by (used in) operating activities	$	(113,029	)	$	(19	)	$	25,517		$	(87,531	)	$	—		$	6,428		$	(81,103	)
Purchases of property, plant and equipment	(53,291		)	19			(24,752		)	(78,024		)	—			(525		)	(78,549		)
Proceeds from Tokyo Gas Transaction	463,418			—			—			$	463,418		—			—			463,418
Proceeds from Synergy transaction	42,297			—			—			42,297			—			—			42,297
Proceeds from sale of properties and equipment	2,977			—			17			2,994			—			—			2,994
Purchases of marketable securities	(142,823		)	—			—			$	(142,823	)	—			—			(142,823		)
Maturities and sales of marketable securities	13,178			—			—			$	13,178		—			—			13,178
Net cash flow provided by (used in)	325,756			19			(24,735		)	301,040			—			(525		)	300,515
investing activities
Issuance of debt	1,170,266			—			3,040			1,173,306			—			—			1,173,306
Repayments of debt	(1,157,969		)	—			(150,413		)	(1,308,382		)	—			—			(1,308,382		)
Debt issuance costs paid	(25,868		)	—			—			(25,868		)	—			—			(25,868		)
Intercompany note	(147,103		)	—			147,103			—			—			—			—
Distribution of Fortune Creek Partnership funds	—			—			—			—			—			(8,079		)	(8,079		)
Purchase of treasury stock	(1,472		)	—			—			(1,472		)	—			—			(1,472		)
Net cash flow used in financing activities	(162,146		)	—			(270		)	(162,416		)	—			(8,079		)	(170,495		)
Effect of exchange rates on cash	—			—			(512		)	(512		)	—			3,122			2,610
Net increase in cash and equivalents	50,581			—			—			50,581			—			946			51,527
Cash and equivalents at beginning of period	4,618			—			—			4,618			—			333			4,951
Cash and equivalents at end of period	$	55,199		$	—		$	—		$	55,199		$	—		$	1,279		$	56,478

Segment_Information

Segment Information	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Segment Information	'
	SEGMENT INFORMATION
	We operate in two geographic segments, the U.S. and Canada, where we are engaged in the exploration and production segment of the oil and gas industry. Additionally, we operate a significantly smaller midstream segment in the U.S. and Canada, where we provide natural gas gathering and processing services, primarily to our U.S. and Canadian exploration and production segments. In Canada, our midstream operation is the Fortune Creek partnership. Revenue earned by Fortune Creek for the gathering and processing of our gas is eliminated on a consolidated basis as is the GPT recognized by our producing properties. Based on the immateriality of our midstream segment, we have combined our U.S. and Canadian midstream information. We evaluate performance based on operating income and property and equipment costs incurred.
		Exploration &												Quicksilver Consolidated
		Production
		U.S.		Canada		Midstream		Corporate			Elimination
	For the Three Months Ended September 30:	(in thousands)
	2014
	Revenue	$	120,513	$	42,072	$	5,184	$	—		$	(4,271	)	$	163,498
	DD&A	8,096		4,171		1,256		446			—			13,969
	Impairment expense	—		—		135		—			—			135
	Operating income (loss)	57,809		16,364		2,367		(11,756		)	—			64,784
	Property and equipment costs incurred	20,912		7,254		72		218			—			28,456
	2013
	Revenue	$	114,002	$	38,407	$	6,381	$	—		$	(5,674	)	$	153,116
	DD&A	8,402		4,114		1,300		574			—			14,390
	Operating income (loss)	56,911		11,076		3,107		(11,045		)	—			60,049
	Property and equipment costs incurred	15,147		4,288		1,615		(329		)	—			20,721
	For the Nine Months Ended September 30:
	2014
	Revenue	$	269,310	$	101,198	$	16,157	$	—		$	(13,349	)	$	373,316
	DD&A	23,652		13,779		3,744		1,409			—			42,584
	Impairment expense	—		—		135		—			—			135
	Operating income (loss)	78,891		20,199		7,700		(39,524		)	—			67,266
	Property and equipment costs incurred	85,814		20,924		83		763			—			107,584
	2013
	Revenue	$	334,804	$	110,052	$	19,198	$	—		$	(16,736	)	$	447,318
	DD&A	29,745		12,458		3,947		1,761			—			47,911
	Operating income (loss)	456,624		30,126		9,593		(45,270		)	—			451,073
	Property and equipment costs incurred	50,459		9,972		2,369		9,655			—			72,455
	Property, plant and equipment-net
	30-Sep-14	$	415,163	$	303,827	$	89,362	$	4,128		$	—		$	812,480
	31-Dec-13	451,840		306,423		97,118		5,424			—			860,805
	Total assets
	30-Sep-14	796,931		362,994		104,204		4,128			—			$	1,268,257
	31-Dec-13	895,388		359,951		108,963		5,424			—			1,369,726

Supplemental_Cash_Flow_Informa

Supplemental Cash Flow Information	9 Months Ended
	Sep. 30, 2014
Supplemental Cash Flow Information [Abstract]	'
Supplemental Cash Flow Information	'
	SUPPLEMENTAL CASH FLOW INFORMATION
	Cash paid (received) for interest and income taxes is as follows:
		For the Nine Months Ended
		September 30,
		2014			2013
		(in thousands)
	Interest, net of capitalized interest	$	124,408		$	227,189
	Income taxes	(7,844		)	1,217
	Other significant non-cash transactions are as follows:
		For the Nine Months Ended
		September 30,
		2014			2013
		(in thousands)
	Working capital related to capital expenditures	$	7,612		$	4,867

Transactions_With_Related_Part

Transactions With Related Parties	9 Months Ended
	Sep. 30, 2014
Related Party Transactions [Abstract]	'
Transactions With Related Parties	'
	TRANSACTIONS AND OTHER MATTERS WITH RELATED PARTIES
	As of September 30, 2014, members of the Darden family and entities controlled by them beneficially owned approximately 30% of our outstanding common stock. Glenn Darden and Anne Darden Self are officers and directors of Quicksilver.
	During the first nine months of 2013, we paid $0.3 million for use of an airplane owned by an entity controlled by members of the Darden family. Usage rates were determined based upon comparable rates charged by third parties.
	Payments received from Mercury, a company owned by members of the Darden family, for sublease rentals, employee insurance coverage and administrative services were less than $0.1 million for the first nine months of 2014 and 2013.
	In August 2013, we paid $0.2 million in commission to an entity controlled by members of the Darden family in connection with the sublease of a portion of our office space.
	Thomas Darden, brother of Glenn Darden and Anne Darden Self, retired as an employee on December 31, 2013, and resigned from the board of directors effective September 1, 2014. During the first nine months of 2014, consulting fee payments of $405,000, office allowance payments of $112,500 and COBRA payments of $39,000 were made to Mr. Darden. Additionally, in accordance with the agreement related to his retirement signed in May 2013 and following the execution and non-revocation of a release agreement satisfactory to us, we paid Mr. Darden a cash bonus of $286,650 and an equity bonus in the form of 72,662 fully vested shares having a grant date fair value equal to $191,100 in March 2014.

Derivatives_And_Fair_Value_Mea1

Derivatives And Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2014
Credit Risk Derivatives, at Fair Value, Net [Abstract]	'
Estimated Fair Value Of Derivative Instruments Under Input Levels	'
		Asset Derivatives							Liability Derivatives
		30-Sep-14				31-Dec-13			30-Sep-14			31-Dec-13
		(in thousands)							(in thousands)
	Level 2 derivative instruments	$	74,312			$	107,395		$	846		$	3,448
	Level 3 derivative instruments	17,754				23,485			—			—
	Total	$	92,066			$	130,880		$	846		$	3,448
Changes In Level 3 Fair Values	'
		For the Three Months Ended
		September 30,
		2014				2013
		(in thousands)
	Balance at beginning of period	$	(5,533	)		$	(9,873	)
	Total gains (losses) for the period:
	Unrealized gain (loss) on derivatives	24,829				24,080
	Settlements in net derivative gains (losses)	(1,542		)		(3,302		)
	Balance at end of period	$	17,754			$	10,905
	Total gains (losses) included in net derivative gains (losses) attributable to the change in unrealized gains (losses) related to assets still held at the reporting date	$	24,485			$	24,026
		For the Nine Months Ended
		September 30,
		2014				2013
		(in thousands)
	Balance at beginning of period	$	23,485			$	(4,931	)
	Total gains (losses) for the period:
	Unrealized gain (loss) on derivatives	(6,488		)		24,618
	Settlements in net derivative gains (losses)	757				(8,782		)
	Balance at end of period	$	17,754			$	10,905
	Total gains (losses) included in net derivative gains (losses) attributable to the change in unrealized gains (losses) related to assets still held at the reporting date	$	(2,476	)		$	26,788
Marketable Securities	'
		31-Dec-13
		Amortized Cost				Gross Unrealized Gains			Gross Unrealized Losses			Fair Market Value
		(in thousands)
	Marketable securities (held-to-maturity)
	Time deposits	$	29,419			$	—		$	(22	)	$	29,397
	Commercial paper	136,924				27			(25		)	136,926
	Marketable securities	$	166,343			$	27		$	(47	)	$	166,323
Price Collars And Swaps For Anticipated Natural Gas And NGL Production	'
	Production		Daily Production
	Year		Volume
			Natural Gas		Natural Gas Basis Swaps
			MMcfd		MMcfd
	Remaining 2014 (1)		170		40
	2015		150		—
	2016-2021		40		—
	(1)	Our natural gas basis swaps economically hedge the AECO basis adjustment from NYMEX.
Estimated Fair Value Of Derivative Instruments	'
		Asset Derivatives								Liability Derivatives
		30-Sep-14				31-Dec-13				30-Sep-14			31-Dec-13
		(in thousands)								(in thousands)
	Derivatives not designated as hedges:
	Commodity contracts reported in:
	Current derivative assets	$	66,278			$	60,063			$	180		$	2,540
	Noncurrent derivative assets	75,911				105,315				49,943			31,958
	Current derivative liabilities	—				—				846			3,125
	Noncurrent derivative liabilities	—				—				—			323
	Total derivatives not designated as hedges	$	142,189			$	165,378			$	50,969		$	37,946

Property_Plant_And_Equipment_T

Property, Plant And Equipment (Tables)	9 Months Ended
	Sep. 30, 2014
Property, Plant and Equipment [Abstract]	'
Property, Plant and Equipment [Table Text Block]	'
		30-Sep-14			31-Dec-13
		(in thousands)
	Oil and gas properties
	Subject to depletion	$	5,635,307		$	5,687,557
	Unevaluated costs	218,398			221,605
	Accumulated depletion	(5,245,133		)	(5,268,719		)
	Net oil and gas properties	608,572			640,443
	Other property and equipment
	Pipelines and processing facilities	332,710			347,093
	General properties	71,049			72,125
	Accumulated depreciation	(199,851		)	(198,856		)
	Net other property and equipment	203,908			220,362
	Property, plant and equipment, net of accumulated depletion and depreciation	$	812,480		$	860,805

LongTerm_Debt_Tables

Long-Term Debt (Tables)	9 Months Ended
	Sep. 30, 2014
Long-term Debt, Other Disclosures [Abstract]	'
Schedule Of Long-Term Debt Instruments	'
		30-Sep-14			31-Dec-13
		(in thousands)
	Combined Credit Agreements	$	275,966		$	211,200
	Second Lien Term Loan, net of unamortized discount	609,555			607,572
	Second Lien Notes due 2019, net of unamortized discount	195,058			194,423
	Senior notes due 2015, net of unamortized discount	—			10,472
	Senior notes due 2016, net of unamortized discount	—			8,044
	Senior notes due 2019, net of unamortized discount	293,744			293,243
	Senior notes due 2021, net of unamortized discount	310,229			309,190
	Senior subordinated notes due 2016	350,000			350,000
	Total debt	2,034,552			1,984,144
	Unamortized deferred gain-terminated interest rate swaps	3,292			4,802
	Long-term debt	$	2,037,844		$	1,988,946
Schedule of Outstanding Debt	'
			Priority on Collateral and Structural Seniority (1)
			Highest						Lowest
			priority						priority
			First Lien	Second Lien			Senior Unsecured		Senior Subordinated
			Combined Credit	Second Lien Term Loan		Second Lien Notes due 2019	2019	2021	Senior
			Agreements				Senior Notes	Senior Notes	Subordinated Notes
	Principal amount (1) (2)		$325 million	$625 million		$200 million	$298 million	$325 million	$350 million
	Scheduled maturity date (3)		September 6, 2016	June 21, 2019		June 21, 2019	August 15, 2019	July 1, 2021	April 1, 2016
	Springing maturity date (3)		1-Oct-15	1-Jan-16		1-Jan-16	N/A	N/A	N/A
	Interest rate on outstanding borrowings at September 30, 2014 (4)		4.09%	7.00%		7.00%	9.13%	11.00%	7.12%
	Base interest rate		LIBOR, ABR, CDOR	LIBOR floor of 1.25%; ABR floor of 2.25%		LIBOR floor of 1.25%	N/A	N/A	N/A
	options (5) (6)
	Financial covenants (7) (9)		- Minimum current ratio of 1.0	N/A		N/A	N/A	N/A	N/A
			- Minimum EBITDA to cash interest expense ratio of 1.10
			- Maximum senior secured debt leverage ratio of 2.0
	Significant restrictive covenants (8)(9)		- Incurrence of debt	- Incurrence of debt		- Incurrence of debt	- Incurrence of debt	- Incurrence of debt	- Incurrence of debt
			- Incurrence of liens	- Incurrence of liens and 1st lien cap		- Incurrence of liens and 1st lien cap	- Incurrence of liens	- Incurrence of liens	- Incurrence of liens
			- Payment of dividends	-Payment of dividends		-Payment of dividends	-Payment of dividends	-Payment of dividends	-Payment of dividends
			- Equity purchases	- Equity purchases		- Equity purchases	- Equity purchases	- Equity purchases	- Equity purchases
			- Asset sales	- Asset sales		- Asset sales	- Asset sales	- Asset sales	- Asset sales
			- Affiliate transactions	- Affiliate transactions		- Affiliate transactions	- Affiliate transactions	- Affiliate transactions	- Affiliate transactions
			- Limitations on derivatives and investments
	Optional redemption (9)		Any time	Any time, subject to re-pricing event		Any time, subject to re-pricing event	August 15,	July 1,	Any time
				June 21,		June 21,	2014: 104.563	2019: 102.000
				2015: 101		2015: 101	2015: 103.042	2020: par
							2016: 101.521
							2017: par
	Make-whole redemption (9)		N/A	N/A		N/A	N/A	Callable prior	N/A
								to July 1, 2019
								at make-whole
								call price of
								Treasury +50 bps
	Change of control (9)		Event of default	Put at 101%		Put at 101%	Put at 101%	Put at 101%	Put at 101%
				of principal		of principal	of principal	of principal	of principal
				plus accrued		plus accrued	plus accrued	plus accrued	plus accrued
				interest		interest	interest	interest	interest
	Equity clawback (9)		N/A	N/A		N/A	N/A	Redeemable until	N/A
								1-Jul-16
								at 111.00%,
								plus accrued
								interest for
								up to 35%
	Estimated fair value (10)		$276.0 million	$568.8 million		$182.0 million	$186.3 million	$213.7 million	$136.5 million
	(1)	Borrowings under the Amended and Restated U.S. Credit Facility, Second Lien Term Loan and Second Lien Notes due 2019 are guaranteed by certain of Quicksilver’s domestic subsidiaries and are secured (on a first priority basis with respect to the Amended and Restated U.S. Credit Facility and on a second priority basis with respect to the Second Lien Term Loan and the Second Lien Notes due 2019) by 100% of the equity interests of each of Cowtown Pipeline Management, Inc., Cowtown Pipeline Funding, Inc., Cowtown Gas Processing L.P., Cowtown Pipeline L.P., Barnett Shale Operating LLC, Silver Stream Pipeline Company LLC, QPP Parent LLC and QPP Holdings LLC (collectively, the “Domestic Pledged Equity”), 65% of the equity interests of Quicksilver Resources Canada Inc. (“Quicksilver Canada”) and Quicksilver Production Partners Operating Ltd. (with respect to the Amended and Restated U.S. Credit Facility, on a ratable basis with borrowings under the Amended and Restated Canadian Credit Facility) and the majority of Quicksilver's domestic proved oil and gas properties and related assets, (the “Domestic Pledged Property”). Borrowings under the Amended and Restated Canadian Credit Facility are guaranteed by Quicksilver and certain of its domestic subsidiaries and are secured by the Domestic Pledged Equity, the Domestic Pledged Property, 100% of the equity interests of Quicksilver Canada (65% of which is on a ratable basis with the borrowings under the Amended and Restated U.S. Credit Facility) and any Canadian restricted subsidiaries, under the Amended and Restated Canadian Credit Facility, and 65% of the equity interests of Quicksilver Production Partners Operating Ltd. (which is on a ratable basis with the borrowings under the Amended and Restated U.S. Credit Facility) and the majority of Quicksilver Canada's oil and gas properties and related assets. The other debt presented is based upon structural seniority and priority of payment.
	(2)	The principal amount for the Combined Credit Agreements represents the global borrowing base as of September 30, 2014.
	(3)	The Combined Credit Agreements are required to be repaid 91 days prior to the maturity of the Senior Subordinated Notes, the Second Lien Term Loan or the Second Lien Notes due 2019, if on the applicable date any amount of such debt remains outstanding. The Second Lien Term Loan and Second Lien Notes due 2019 are required to be repaid (1) 91 days prior to the maturity of the 2019 Senior Notes if more than $100 million of the 2019 Senior Notes remain outstanding and (2) 91 days prior to the maturity of the Senior Subordinated Notes if on the applicable date the amount remaining outstanding is greater than $100 million. As of September 30, 2014, as presently structured and assuming no changes in the amounts outstanding, amounts outstanding under the Combined Credit Agreements would be due on October 1, 2015 and the Second Lien Term Loan and Second Lien Notes due 2019 would be due on January 1, 2016.
	(4)	Represents the weighted average borrowing rate payable to lenders.
	(5)	Amounts outstanding under the Amended and Restated U.S. Credit Facility bear interest, at our election, at (i) adjusted LIBOR (as defined in the Amended and Restated U.S. Credit Facility) plus an applicable margin between 2.75% and 3.75%, (ii) ABR (as defined in the Amended and Restated U.S. Credit Facility), which is the greatest of (a) the prime rate announced by JPMorgan, (b) the federal funds rate plus 0.50% and (c) adjusted LIBOR for an interest period of one month plus 1.00%, plus, in each case under scenario (ii), an applicable margin between 1.75% and 2.75%. We also pay a per annum fee on the LC Exposure (as defined in the Amended and Restated U.S. Credit Facility) of all letters of credit issued under the Amended and Restated U.S. Credit Facility equal to the applicable margin, with respect to Eurodollar loans, and a commitment fee on the unused availability under the Amended and Restated U.S. Credit Facility of 0.50%.
	(6)	Amounts outstanding under the Amended and Restated Canadian Credit Facility bear interest, at our election, at (i) the CDOR Rate (as defined in the Amended and Restated Canadian Credit Facility) plus an applicable margin between 2.75% and 3.75%, (ii) the Canadian Prime Rate (as defined in the Amended and Restated Canadian Credit Facility) plus an applicable margin between 1.75% and 2.75%, (iii) the U.S. Prime Rate (as defined in the Amended and Restated Canadian Credit Facility) plus an applicable margin between 1.75% and 2.75% and (iv) adjusted LIBOR (as defined in the Amended and Restated Canadian Credit Facility) plus an applicable margin between 2.75% and 3.75%. We pay a per annum fee on the LC Exposure (as defined in the Amended and Restated Canadian Credit Facility) of all letters of credit issued under the Amended and Restated Canadian Credit Facility equal to the applicable margin, with respect to Eurodollar loans, and a commitment fee on the unused availability under the Amended and Restated Canadian Credit Facility of 0.50%.
	(7)	As of September 30, 2014, the future minimum required interest coverage ratio for the Combined Credit Agreements is as follows:
	Period		Interest Coverage Ratio	Period		Interest Coverage Ratio
	Q4 2014		1.1	Q4 2015		1.2
	Q1 2015		1.1	Q1 2016		1.5
	Q2 2015		1.15	Q2 2016		2
	Q3 2015		1.15
	In November 2014, the Combined Credit Agreements were amended to eliminate the requirement to meet the minimum interest coverage ratio covenant beginning in the fourth quarter of 2014 through and including the fourth quarter of 2015. A minimum EBITDAX covenant was added beginning in the fourth quarter of 2014 through and including the fourth quarter of 2015 that requires the following minimum EBITDAX levels:
		Minimum EBITDAX Covenant
		(in millions)
	Three months ending December 31, 2014	$	30
	Six months ending March 31, 2015	59
	Nine months ending June 30, 2015	87.25
	Twelve months ending September 30, 2015	120.5
	Twelve months ending December 31, 2015	122
(8)	Our indentures require us to reinvest or repay senior debt with net cash proceeds from certain asset sales within one year.
(9)	The information presented in this table is qualified in all respects by reference to the full text of the covenants, provisions and related definitions contained in the documents governing the various components of our debt.
(10)	The estimated fair value is determined using market quotations based on recent trade activity for fixed rate obligations (“Level 2” inputs). Our Second Lien Term Loan and Second Lien Notes due 2019 feature variable interest rates and we estimate their fair value by using market quotations based on recent trade activity (“Level 3” input). We consider our Combined Credit Agreements which have a variable interest rate to have a fair value equal to their carrying value (“Level 1” input).

Quicksilver_Stockholders_Equit1

Quicksilver Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2014
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]	'
Assumptions For The Black-Scholes Option Pricing Model For Stock Options Issued	'
	Weighted avg grant date fair value	$1.05
	Weighted avg risk-free interest rate	1.31%
	Expected life	4.9 years
	Wtd avg volatility	69.00%
	Expected dividends	—
Stock Option Activity	'
		Shares		Weighted		Weighted		Aggregate
				Average		Average		Intrinsic
				Exercise		Remaining		Value
				Price		Contractual Life
						(in years)		(in thousands)
	Outstanding at January 1, 2014	6,771,578		$	7.82
	Forfeited	(44,950	)	1.65
	Expired	(111,494	)	9.83
	Outstanding at September 30, 2014	6,615,134		$	7.83	5.4		$	—
	Exercisable at September 30, 2014	5,232,903		$	9.18	4.6		$	—
Restricted Stock And Stock Unit Activity	'
		Payable in shares				Payable in cash
		Shares		Weighted		Shares			Weighted
				Average					Average
				Grant Date					Grant Date
				Fair Value					Fair Value
	Outstanding at January 1, 2014	5,668,090		$	3.9	1,572,341			$	3.69
	Granted	4,765,425		2.64		—			—
	Vested	(2,559,959	)	4.86		(631,275	)		4.29
	Forfeited	(348,554	)	3.09		(33,458	)		3.2
	Outstanding at September 30, 2014	7,525,002		$	2.82	907,608			$	3.32

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Reconciliation Of Components Used To Compute Basic And Diluted Earnings (Loss) Per Common Share	'
		For the Three Months Ended						For the Nine Months Ended
		September 30,						September 30,
		2014			2013			2014			2013
		(in thousands, except per share data)
	Net income (loss) attributable to Quicksilver	$	23,757		$	10,577		$	(71,171	)	$	193,397
	Basic income allocable to participating securities (1)	(772		)	(312		)	—			(5,111		)
	Income (loss) available to shareholders	$	22,985		$	10,265		$	(71,171	)	$	188,286
	Weighted average common shares – basic	173,936			171,682			173,783			171,403
	Effect of dilutive securities (2)
	Share-based compensation awards	216			311			—			170
	Weighted average common shares – diluted	174,152			171,993			173,783			171,573
	Earnings (loss) per common share – basic	$	0.13		$	0.06		$	(0.41	)	$	1.1
	Earnings (loss) per common share – diluted	$	0.13		$	0.06		$	(0.41	)	$	1.1
	(1)	Restricted share awards that contain nonforfeitable rights to dividends are participating securities and, therefore, should be included in computing earnings per share using the two-class method. Participating securities, however, do not participate in undistributed net losses because there is no contractual obligation to do so.
	(2)	For the three months ended September 30, 2014, 6.6 million shares associated with our stock options and 1.2 million shares associated with our unvested RSUs were antidilutive and, therefore, excluded from the diluted share calculations. For the three months ended September 30, 2013, 6.2 million shares associated with our stock options and 0.2 million shares associated with our unvested RSUs were antidilutive and, therefore, excluded from the diluted share calculations. For the nine months ended September 30, 2014, 6.6 million shares associated with our stock options and 0.8 million shares associated with our unvested RSUs were antidilutive and, therefore, excluded from the diluted share calculations. For the nine months ended September 30, 2013, 5.5 million shares associated with our stock options and 0.2 million shares associated with our unvested RSUs were antidilutive and, therefore, excluded from the diluted share calculations.

Condensed_Consolidating_Financ1

Condensed Consolidating Financial Information (Tables)	9 Months Ended
	Sep. 30, 2014
Condensed Consolidating Financial Information [Abstract]	'
Condensed Consolidating Balance Sheets	'
		30-Sep-14
		Quicksilver			Restricted			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Consolidated			Quicksilver
		Resources			Guarantor			Non-			Subsidiary			and			Non-			Creek			Eliminations			Resources Inc.
		Inc.			Subsidiaries			Guarantor			Eliminations			Restricted			Guarantor									Consolidated
								Subsidiaries						Subsidiaries			Subsidiaries
		(in thousands)
	ASSETS
	Current assets	$	338,424		$	13,096		$	65,733		$	(23,193	)	$	394,060		$	(455	)	$	1,746		$	949		$	396,300
	Property and equipment	417,921			14,625			305,197			—			737,743			—			74,737			—			812,480
	Investment in subsidiaries (equity method)	(227,994		)	—			(23,409		)	227,994			(23,409		)	(23,429		)	—			46,838			—
	Other assets	457,285			—			15,473			(413,281		)	59,477			—			—			—			59,477
	Total assets	$	985,636		$	27,721		$	362,994		$	(208,480	)	$	1,167,871		$	(23,884	)	$	76,483		$	47,787		$	1,268,257
	LIABILITIES AND EQUITY
	Current liabilities	$	103,042		$	13,401		$	11,064		$	(23,193	)	$	104,314		$	(475	)	$	3,736		$	949		$	108,524
	Long-term liabilities	1,980,078			19,241			575,003			(413,281		)	2,161,041			—			1,525			94,651			2,257,217
	Stockholders' equity	(1,097,484		)	(4,921		)	(223,073		)	227,994			(1,097,484		)	(23,409		)	71,222			(47,813		)	(1,097,484		)
	Total liabilities and equity	$	985,636		$	27,721		$	362,994		$	(208,480	)	$	1,167,871		$	(23,884	)	$	76,483		$	47,787		$	1,268,257
		December 31, 2013
		Quicksilver			Restricted			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Consolidated			Quicksilver
		Resources			Guarantor			Non-			Subsidiary			and			Non-			Creek			Eliminations			Resources
		Inc.			Subsidiaries			Guarantor			Eliminations			Restricted			Guarantor									Inc.
								Subsidiaries						Subsidiaries			Subsidiaries									Consolidated
		(in thousands)
	ASSETS
	Current assets	$	349,586		$	10,735		$	53,034		$	(19,642	)	$	393,713		$	909		$	1,110		$	(1,772	)	$	393,960
	Property and equipment	455,822			15,486			307,865			—			779,173			—			81,632			—			860,805
	Investment in subsidiaries (equity method)	(217,852		)	—			(33,840		)	217,852			(33,840		)	(33,840		)	—			67,680			—
	Other assets	472,792			—			32,892			(390,723		)	114,961			—			—			—			114,961
	Total assets	$	1,060,348		$	26,221		$	359,951		$	(192,513	)	$	1,254,007		$	(32,931	)	$	82,742		$	65,908		$	1,369,726
	LIABILITIES AND EQUITY
	Current liabilities	$	124,275		$	12,210		$	17,167		$	(19,642	)	$	134,010		$	888		$	1,671		$	(1,772	)	$	134,797
	Long-term liabilities	1,942,043			19,242			542,659			(390,723		)	2,113,221			—			1,546			126,132			2,240,899
	Stockholders' equity	(1,005,970		)	(5,231		)	(199,875		)	217,852			(993,224		)	(33,819		)	79,525			(58,452		)	(1,005,970		)
	Total liabilities and equity	$	1,060,348		$	26,221		$	359,951		$	(192,513	)	$	1,254,007		$	(32,931	)	$	82,742		$	65,908		$	1,369,726
Condensed Consolidating Statements Of Income	'
		For the Three Months Ended September 30, 2014
		Quicksilver			Restricted			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Consolidated			Quicksilver
		Resources Inc.			Guarantor			Non-			Subsidiary			and			Non-			Creek			Eliminations			Resources Inc.
					Subsidiaries			Guarantor			Eliminations			Restricted			Guarantor									Consolidated
								Subsidiaries						Subsidiaries			Subsidiaries
		(in thousands)
	Revenue	$	120,513		$	427		$	42,558		$	—		$	163,498		$	—		$	4,271		$	(4,271	)	$	163,498
	Operating expenses	72,868			341			27,648			—			100,857			—			2,128			(4,271		)	98,714
	Equity in net earnings of subsidiaries	8,821			—			(1,458		)	(8,821		)	(1,458		)	2,144			—			(686		)	—
	Operating income (loss)	56,466			86			13,452			(8,821		)	61,183			2,144			2,143			(686		)	64,784
	Fortune Creek accretion	—			—			—			—			—			—			—			(3,602		)	(3,602		)
	Interest expense and other	(37,613		)	86			(4,838		)	—			(42,365		)	—			1			—			(42,364		)
	Income tax (expense) benefit	4,826			(30		)	65			78			4,939			—			—			—			4,939
	Net income (loss)	$	23,679		$	142		$	8,679		$	(8,743	)	$	23,757		$	2,144		$	2,144		$	(4,288	)	$	23,757
	Other comprehensive income (loss)	(11,564		)	—			(3,325		)	—			(14,889		)	—			—			—			(14,889		)
	Equity in OCI of subsidiaries	(3,325		)	—			—			3,325			—			—			—			—			—
	Comprehensive income (loss)	$	8,790		$	142		$	5,354		$	(5,418	)	$	8,868		$	2,144		$	2,144		$	(4,288	)	$	8,868
		For the Three Months Ended September 30, 2013
		Quicksilver			Restricted			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Consolidated			Quicksilver
		Resources Inc.			Guarantor			Non-			Subsidiary			and			Non-			Creek			Eliminations			Resources Inc.
					Subsidiaries			Guarantor			Eliminations			Restricted			Guarantor									Consolidated
								Subsidiaries						Subsidiaries			Subsidiaries
		(in thousands)
	Revenue	$	114,021		$	192		$	38,903		$	—		$	153,116		$	—		$	5,674		$	(5,674	)	$	153,116
	Operating expenses	73,594			68			30,360			—			104,022			—			2,693			(5,674		)	101,041
	Tokyo Gas Transaction gain	7,974			—			—			—			7,974			—			—			—			7,974
	Equity in net earnings of subsidiaries	3,854			—			(1,834		)	(3,854		)	(1,834		)	2,984			—			(1,150		)	—
	Operating income (loss)	52,255			124			6,709			(3,854		)	55,234			2,984			2,981			(1,150		)	60,049
	Fortune Creek accretion	—			—			—			—			—			—			—			(4,818		)	(4,818		)
	Interest expense and other	(36,922		)	—			(1,769		)	—			(38,691		)	—			3			—			(38,688		)
	Income tax (expense) benefit	(4,756		)	—			(1,210		)	—			(5,966		)	—			—			—			(5,966		)
	Net income (loss)	$	10,577		$	124		$	3,730		$	(3,854	)	$	10,577		$	2,984		$	2,984		$	(5,968	)	$	10,577
	Other comprehensive income (loss)	(6,114		)	—			(2,680		)	—			(8,794		)	—			—			—			(8,794		)
	Equity in OCI of subsidiaries	(2,680		)	—			—			2,680			—			—			—			—			—
	Comprehensive income (loss)	$	1,783		$	124		$	1,050		$	(1,174	)	$	1,783		$	2,984		$	2,984		$	(5,968	)	$	1,783
		For the Nine Months Ended September 30, 2014
		Quicksilver			Restricted			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Consolidated			Quicksilver
		Resources Inc.			Guarantor			Non-			Subsidiary			and			Non-			Creek			Eliminations			Resources Inc.
					Subsidiaries			Guarantor			Eliminations			Restricted			Guarantor									Consolidated
								Subsidiaries						Subsidiaries			Subsidiaries
		(in thousands)
	Revenue	$	269,321		$	1,212		$	102,783		$	—		$	373,316		$	—		$	13,349		$	(13,349	)	$	373,316
	Operating expenses	225,906			988			86,491			—			313,385			—			6,014			(13,349		)	306,050
	Equity in net earnings of subsidiaries	2,864			—			(4,266		)	(2,864		)	(4,266		)	7,339			—			(3,073		)	—
	Operating income (loss)	46,279			224			12,026			(2,864		)	55,665			7,339			7,335			(3,073		)	67,266
	Fortune Creek accretion	—			—			—			—			—			—			—			(11,605		)	(11,605		)
	Interest expense and other	(117,315		)	86			(8,526		)	—			(125,755		)	—			4			—			(125,751		)
	Income tax (expense) benefit	(213		)	(78		)	(868		)	78			(1,081		)	—			—			—			(1,081		)
	Net income (loss)	$	(71,249	)	$	232		$	2,632		$	(2,786	)	$	(71,171	)	$	7,339		$	7,339		$	(14,678	)	$	(71,171	)
	Other comprehensive income (loss)	(20,252		)	—			(6,849		)	—			(27,101		)	—			—			—			(27,101		)
	Equity in OCI of subsidiaries	(6,849		)	—			—			6,849			—			—			—			—			—
	Comprehensive income (loss)	$	(98,350	)	$	232		$	(4,217	)	$	4,063		$	(98,272	)	$	7,339		$	7,339		$	(14,678	)	$	(98,272	)
		For the Nine Months Ended September 30, 2013
		Quicksilver			Restricted			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Consolidated			Quicksilver
		Resources Inc.			Guarantor			Non-			Subsidiary			and			Non-			Creek			Eliminations			Resources Inc.
					Subsidiaries			Guarantor			Eliminations			Restricted			Guarantor									Consolidated
								Subsidiaries						Subsidiaries			Subsidiaries
		(in thousands)
	Revenue	$	334,848		$	608		$	111,862		$	—		$	447,318		$	—		$	16,736		$	(16,736	)	$	447,318
	Operating expenses	256,810			206			89,559			—			346,575			—			7,552			(16,736		)	337,391
	Tokyo Gas Transaction gain	341,146			—			—			—			341,146			—			—			—			341,146
	Equity in net earnings of subsidiaries	(9,227		)	—			(5,300		)	9,227			(5,300		)	9,190			—			(3,890		)	—
	Operating income (loss)	409,957			402			17,003			9,227			436,589			9,190			9,184			(3,890		)	451,073
Fortune Creek accretion	—			—			—			—			—			—			—			(14,490		)	(14,490		)
Interest expense and other	(200,639		)	—			(24,490		)	—			(225,129		)	—			6			—			(225,123		)
Income tax (expense) benefit	(15,921		)	—			(2,142		)	—			(18,063		)	—			—			—			(18,063		)
Net income (loss)	$	193,397		$	402		$	(9,629	)	$	9,227		$	193,397		$	9,190		$	9,190		$	(18,380	)	$	193,397
Other comprehensive income (loss)	(29,014		)	—			(9,100		)	—			(38,114		)	—			—			—			(38,114		)
Equity in OCI of subsidiaries	(9,100		)	—			—			9,100			—			—			—			—			—
Comprehensive income (loss)	$	155,283		$	402		$	(18,729	)	$	18,327		$	155,283		$	9,190		$	9,190		$	(18,380	)	$	155,283
Condensed Consolidating Statements Of Cash Flows	'
		For the Nine Months Ended September 30, 2014
		Quicksilver			Restricted			Restricted			Restricted			Quicksilver			Unrestricted			Fortune			Consolidated			Quicksilver
		Resources Inc.			Guarantor			Non-Guarantor			Subsidiary			and			Non-Guarantor			Creek			Eliminations			Resources Inc.
					Subsidiaries			Subsidiaries			Eliminations			Restricted			Subsidiaries									Consolidated
														Subsidiaries
		(in thousands)
	Net cash flow provided by (used in) operating activities	$	(39,474	)	$	(688	)	$	28,843		$	—		$	(11,319	)	$	—		$	6,336		$	—		$	(4,983	)
	Purchases of property, plant and equipment	(88,119		)	(57		)	(23,247		)	—			(111,423		)	—			(21		)	—			(111,444		)
	Investment in subsidiary	(1,246		)	—			(26,395		)	1,246			(26,395		)	(26,395		)	—			52,790			—
	Proceeds from Southwestern Transaction	95,587			—			—			—			95,587			—			—			—			95,587
	Proceeds from sale of properties and equipment	1,445			—			497			—			1,942			—			—			—			1,942
	Purchases of marketable securities	(55,890		)	—			—			—			(55,890		)	—			—			—			(55,890		)
	Maturities and sales of marketable securities	222,025			—			—			—			222,025			—			—			—			222,025
	Net cash flow provided by (used in) investing activities	173,802			(57		)	(49,145		)	1,246			125,846			(26,395		)	(21		)	52,790			152,220
	Issuance of debt	174,000			—			69,184			—			243,184			—			—			—			243,184
	Repayments of debt	(138,651		)	—			(55,038		)	—			(193,689		)	—			—			—			(193,689		)
	Debt issuance costs paid	(225		)	—			—			—			(225		)	—			—			—			(225		)
	Intercompany note	(22,558		)	—			22,558			—			—			—			—			—			—
	Intercompany financing	—			745			501			(1,246		)	—			—			—			—			—
	Contribution received	—			—			—			—			—			26,395			26,395			(52,790		)	—
	Distribution of Fortune Creek Partnership funds	—			—			—			—			—			—			(37,113		)	—			(37,113		)
	Purchase of treasury stock	(2,388		)	—			—			—			(2,388		)	—			—			—			(2,388		)
	Net cash flow provided by (used in) financing activities	10,178			745			37,205			(1,246		)	46,882			26,395			(10,718		)	(52,790		)	9,769
	Effect of exchange rates on cash	—			—			(2,718		)	—			(2,718		)	—			4,934			—			2,216
	Net increase (decrease) in cash and equivalents	144,506			—			14,185			—			158,691			—			531			—			159,222
	Cash and equivalents at beginning of period	83,893			—			4,135			—			88,028			22			1,053			—			89,103
	Cash and equivalents at end of period	$	228,399		$	—		$	18,320		$	—		$	246,719		$	22		$	1,584		$	—		$	248,325
		For the Nine Months Ended September 30, 2013
		Quicksilver			Restricted			Restricted			Quicksilver			Unrestricted Non-Guarantor Subsidiaries			Fortune			Quicksilver
		Resources Inc.			Guarantor			Non-Guarantor			and						Creek			Resources Inc.
					Subsidiaries			Subsidiaries			Restricted									Consolidated
											Subsidiaries
		(in thousands)
	Net cash flow provided by (used in) operating activities	$	(113,029	)	$	(19	)	$	25,517		$	(87,531	)	$	—		$	6,428		$	(81,103	)
	Purchases of property, plant and equipment	(53,291		)	19			(24,752		)	(78,024		)	—			(525		)	(78,549		)
	Proceeds from Tokyo Gas Transaction	463,418			—			—			$	463,418		—			—			463,418
	Proceeds from Synergy transaction	42,297			—			—			42,297			—			—			42,297
	Proceeds from sale of properties and equipment	2,977			—			17			2,994			—			—			2,994
	Purchases of marketable securities	(142,823		)	—			—			$	(142,823	)	—			—			(142,823		)
	Maturities and sales of marketable securities	13,178			—			—			$	13,178		—			—			13,178
	Net cash flow provided by (used in)	325,756			19			(24,735		)	301,040			—			(525		)	300,515
	investing activities
	Issuance of debt	1,170,266			—			3,040			1,173,306			—			—			1,173,306
	Repayments of debt	(1,157,969		)	—			(150,413		)	(1,308,382		)	—			—			(1,308,382		)
	Debt issuance costs paid	(25,868		)	—			—			(25,868		)	—			—			(25,868		)
	Intercompany note	(147,103		)	—			147,103			—			—			—			—
	Distribution of Fortune Creek Partnership funds	—			—			—			—			—			(8,079		)	(8,079		)
	Purchase of treasury stock	(1,472		)	—			—			(1,472		)	—			—			(1,472		)
	Net cash flow used in financing activities	(162,146		)	—			(270		)	(162,416		)	—			(8,079		)	(170,495		)
	Effect of exchange rates on cash	—			—			(512		)	(512		)	—			3,122			2,610
	Net increase in cash and equivalents	50,581			—			—			50,581			—			946			51,527
	Cash and equivalents at beginning of period	4,618			—			—			4,618			—			333			4,951
	Cash and equivalents at end of period	$	55,199		$	—		$	—		$	55,199		$	—		$	1,279		$	56,478

Segment_Information_Tables

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Operating Income And Property And Equipment Costs Incurred	'
		Exploration &												Quicksilver Consolidated
		Production
		U.S.		Canada		Midstream		Corporate			Elimination
	For the Three Months Ended September 30:	(in thousands)
	2014
	Revenue	$	120,513	$	42,072	$	5,184	$	—		$	(4,271	)	$	163,498
	DD&A	8,096		4,171		1,256		446			—			13,969
	Impairment expense	—		—		135		—			—			135
	Operating income (loss)	57,809		16,364		2,367		(11,756		)	—			64,784
	Property and equipment costs incurred	20,912		7,254		72		218			—			28,456
	2013
	Revenue	$	114,002	$	38,407	$	6,381	$	—		$	(5,674	)	$	153,116
	DD&A	8,402		4,114		1,300		574			—			14,390
	Operating income (loss)	56,911		11,076		3,107		(11,045		)	—			60,049
	Property and equipment costs incurred	15,147		4,288		1,615		(329		)	—			20,721
	For the Nine Months Ended September 30:
	2014
	Revenue	$	269,310	$	101,198	$	16,157	$	—		$	(13,349	)	$	373,316
	DD&A	23,652		13,779		3,744		1,409			—			42,584
	Impairment expense	—		—		135		—			—			135
	Operating income (loss)	78,891		20,199		7,700		(39,524		)	—			67,266
	Property and equipment costs incurred	85,814		20,924		83		763			—			107,584
	2013
	Revenue	$	334,804	$	110,052	$	19,198	$	—		$	(16,736	)	$	447,318
	DD&A	29,745		12,458		3,947		1,761			—			47,911
	Operating income (loss)	456,624		30,126		9,593		(45,270		)	—			451,073
	Property and equipment costs incurred	50,459		9,972		2,369		9,655			—			72,455
	Property, plant and equipment-net
	30-Sep-14	$	415,163	$	303,827	$	89,362	$	4,128		$	—		$	812,480
	31-Dec-13	451,840		306,423		97,118		5,424			—			860,805
	Total assets
	30-Sep-14	796,931		362,994		104,204		4,128			—			$	1,268,257
	31-Dec-13	895,388		359,951		108,963		5,424			—			1,369,726

Supplemental_Cash_Flow_Informa1

Supplemental Cash Flow Information (Tables)	9 Months Ended
	Sep. 30, 2014
Supplemental Cash Flow Information [Abstract]	'
Cash Paid Or Received For Interest And Income Taxes	'
		For the Nine Months Ended
		September 30,
		2014			2013
		(in thousands)
	Interest, net of capitalized interest	$	124,408		$	227,189
	Income taxes	(7,844		)	1,217
Other Significant Non-cash Transactions	'
		For the Nine Months Ended
		September 30,
		2014			2013
		(in thousands)
	Working capital related to capital expenditures	$	7,612		$	4,867

Divestitures_Divestitures_Deta

Divestitures Divestitures (Details) (USD $)	1-May-14	Sep. 30, 2013	Sep. 30, 2013	Apr. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
	Sandwash Basin [Member]	Southern Alberta Basin [Member]	Barnett Shale [Member]	Barnett Shale [Member]	Tokyo Gas [Member]	Tokyo Gas [Member]	Tokyo Gas [Member]	Tokyo Gas [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'	'	'	'	'	'
Equity Method Investment, Ownership Percentage	'	'	'	25.00%	'	'	'	'
PurchasePricePriorToAdjustments	'	$46,000,000	'	$485,000,000	'	'	'	'
Significant Acquisitions and Disposals, Acquisition Costs or Sale Proceeds	95,600,000	42,300,000	'	464,000,000	'	'	'	'
Gain (Loss) on Disposition of Oil and Gas and Timber Property	'	'	'	'	0	7,974,000	0	341,146,000
Significant Acquisitions and Disposals, Gain (Loss) on Sale or Disposal, Pretax	'	'	8,000,000	339,300,000	'	'	'	'
Oil and Gas Property Decrease due to Gain	'	'	'	'	'	$110,700,000	'	'

Derivatives_And_Fair_Value_Mea2

Derivatives And Fair Value Measurements (Narrative) (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Gains and losses from the effective portion of derivative assets and liabilities held in AOCI expected to be reclassified into earnings	$22.70	'
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	1.5	11.5
Reduction Of Interest Expense Over Life Of Debt Instruments, next 12 months	$2.20	'
Fair Value Inputs, Level 3 [Member]	'	'
Natural gas hedges original tenure	'10 years	'
Fair Value Inputs, Level 3 [Member] | Maximum [Member]	'	'
Unobservable inputs included within the fair value calculation	4.9	'
Fair Value Inputs, Level 3 [Member] | Minimum [Member]	'	'
Unobservable inputs included within the fair value calculation	3.85	'

Derivatives_And_Fair_Value_Mea3

Derivatives And Fair Value Measurements (Estimated Fair Value Of Derivative Instruments Under Input Levels) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Asset Derivatives [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Estimated fair value of derivative instruments	$92,066	$130,880
Asset Derivatives [Member] | Fair Value Inputs, Level 2 [Member] | Commodity Contracts [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Estimated fair value of derivative instruments	74,312	107,395
Asset Derivatives [Member] | Fair Value Inputs, Level 3 [Member] | Commodity Contracts [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Estimated fair value of derivative instruments	17,754	23,485
Liability Derivatives [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Estimated fair value of derivative instruments	846	3,448
Liability Derivatives [Member] | Fair Value Inputs, Level 2 [Member] | Commodity Contracts [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Estimated fair value of derivative instruments	846	3,448
Liability Derivatives [Member] | Fair Value Inputs, Level 3 [Member] | Commodity Contracts [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Estimated fair value of derivative instruments	$0	$0

Derivatives_And_Fair_Value_Mea4

Derivatives And Fair Value Measurements (Changes In Level 3 Fair Values) (Details) (Fair Value Inputs, Level 3 [Member], USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Earnings	($24,829)	($24,080)	$6,488	($24,618)
Balance at beginning of period	-5,533	-9,873	23,485	-4,931
Balance at end of period	17,754	10,905	17,754	10,905
Total gains (losses) included in net derivative gains (losses) attributable to the change in unrealized gains (losses) related to assets still held at the reporting date	24,485	24,026	-2,476	26,788
Derivative gains (losses) [Member]	'	'	'	'
Settlements	($1,542)	($3,302)	$757	($8,782)

Derivatives_And_Fair_Value_Mea5

Derivatives And Fair Value Measurements (Price Collars And Swaps For Anticipated Natural Gas And NGL Production) (Details)	9 Months Ended
	Sep. 30, 2014
	MMcf
Credit Risk Derivatives, at Fair Value, Net [Abstract]	'
Gas 2014, MMcfd	170
Gas 2015, MMcfd	150
Gas 2016-2021, MMcfd	40
Anticipated Natural Gas Basis Swap Production For 2014	40
Anticipated Natural Gas Basis Swap Production For 2015	0
Anticipated Natural Gas Basis Swap Production for 2016-2021	0

Derivatives_And_Fair_Value_Mea6

Derivatives And Fair Value Measurements (Estimated Fair Value Of Derivative Instruments) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Derivatives, Fair Value [Line Items]	'	'
Current derivative assets	$66,098	$57,523
Noncurrent derivative assets	25,968	73,357
Current derivative liabilities	846	3,125
Noncurrent derivative liabilities	0	323
Asset Derivatives [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Total derivative assets	142,189	165,378
Liability Derivatives [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Total derivative liabilities	50,969	37,946
Not Designated as Hedging Instrument [Member] | Asset Derivatives [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Current derivative assets	66,278	60,063
Noncurrent derivative assets	75,911	105,315
Current derivative liabilities	0	0
Noncurrent derivative liabilities	0	0
Not Designated as Hedging Instrument [Member] | Liability Derivatives [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Current derivative assets	180	2,540
Noncurrent derivative assets	49,943	31,958
Current derivative liabilities	846	3,125
Noncurrent derivative liabilities	$0	$323

Derivatives_And_Fair_Value_Mea7

Derivatives And Fair Value Measurements (Carrying Value Of Derivatives) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Derivatives, Fair Value [Line Items]	'	'	'	'
Settlements in production revenue	($7,968)	($11,139)	($20,939)	($37,181)

Derivatives_And_Fair_Value_Mea8

Derivatives And Fair Value Measurements Derivatives And Fair Value Measurements (Available-for-sale securities) (Details) (USD $)	Sep. 30, 2014
In Millions, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'
Held-to-maturity Securities, Sold Security, at Carrying Value	$10
Held-to-maturity Securities, Transferred Security, at Carrying Value	$10

Derivatives_And_Fair_Value_Mea9

Derivatives And Fair Value Measurements Derivatives, Investments And Fair Value Measurements (Held-to-maturity securities) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013
Fixed Income Securities [Member]	'
Schedule of Held-to-maturity Securities [Line Items]	'
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment	$29,419,000
Held-to-maturity Securities, Unrecognized Holding Gain	0
Held-to-maturity Securities, Unrecognized Holding Loss	-22,000
Held-to-maturity Securities, Fair Value	29,397,000
Commercial Paper, Not Included with Cash and Cash Equivalents [Member]	'
Schedule of Held-to-maturity Securities [Line Items]	'
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment	136,924,000
Held-to-maturity Securities, Unrecognized Holding Gain	27,000
Held-to-maturity Securities, Unrecognized Holding Loss	-25,000
Held-to-maturity Securities, Fair Value	136,926,000
Debt Securities [Member]	'
Schedule of Held-to-maturity Securities [Line Items]	'
Held-to-maturity Securities, Amortized Cost before Other than Temporary Impairment	166,343,000
Held-to-maturity Securities, Unrecognized Holding Gain	27,000
Held-to-maturity Securities, Unrecognized Holding Loss	-47,000
Held-to-maturity Securities, Fair Value	$166,323,000

Property_Plant_And_Equipment_S

Property, Plant And Equipment (Schedule Of Property, Plant And Equipment) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Property, Plant and Equipment [Line Items]	'	'	'	'	'
Subject to depletion	$5,635,307	'	$5,635,307	'	$5,687,557
Unevaluated costs	218,398	'	218,398	'	221,605
Accumulated depletion	-5,245,133	'	-5,245,133	'	-5,268,719
Net oil and gas properties	608,572	'	608,572	'	640,443
Pipelines and processing facilities	332,710	'	332,710	'	347,093
General properties	71,049	'	71,049	'	72,125
Accumulated depreciation	-199,851	'	-199,851	'	-198,856
Net other property and equipment	203,908	'	203,908	'	220,362
Property, plant and equipment, net of accumulated depletion and depreciation	812,480	'	812,480	'	860,805
Impairment of Oil and Gas Properties	135	0	135	0	'
Midstream [Member]	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'
Property, plant and equipment, net of accumulated depletion and depreciation	89,362	'	89,362	'	97,118
Impairment of Oil and Gas Properties	135	'	135	'	'
Property, Plant and Equipment, Other Types [Member] | Midstream [Member]	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'
Impairment of Oil and Gas Properties	'	'	$100	'	'

LongTerm_Debt_Narrative_Detail

Long-Term Debt (Narrative) (Details) (USD $)

9 Months Ended

9 Months Ended

9 Months Ended

9 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Senior Notes Due 2015 [Member]

Senior Notes Due 2016 [Member]

Combined Credit Agreements [Member]

Combined Credit Agreements [Member]

Canadian Credit Facility [Member]

Combined Credit Agreements [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Minimum [Member]

Multiple Subsidiaries Set Two [Member]

London Interbank Offered Rate (LIBOR) [Member]

Libor [Member]

Libor [Member]

2013 [Member]

2013 [Member]

Subsequent Event [Member]

U.S. Credit Facility [Member]

Combined Credit Agreements [Member]

Global Letter Of Credit [Member]

U.S. Credit Facility [Member]

U.S. Credit Facility [Member]

Maximum [Member]

Minimum [Member]

Senior Notes [Member]

Senior Notes [Member]

Combined Credit Agreements [Member]

Canadian Credit Facility [Member]

Canadian Credit Facility [Member]

Senior Notes Due 2015 [Member]

Senior Notes Due 2016 [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of ownership interest

'

'

'

'

'

'

100.00%

'

'

'

'

'

65.00%

'

'

'

'

'

'

Borrowing capacity

'

'

'

'

$325,000,000

'

'

'

'

'

$280,000,000

'

'

'

'

'

'

'

'

Line of Credit Facility, Maximum Borrowing Capacity

'

'

'

'

650,000,000

1,750,000,000

'

'

'

'

'

'

'

'

'

'

'

'

450,000,000

Redemption percentage of par value

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

101.94%

105.88%

'

Available borrowing under combined credit agreements

'

'

'

'

'

'

'

6,700,000

'

'

'

'

'

'

'

'

'

'

'

Commitment fee percentage

'

'

'

'

'

'

'

0.50%

1.75%

0.50%

'

'

'

'

'

'

'

'

'

EBITDA to interest expense

'

'

'

'

'

'

'

'

'

'

'

2.25

'

'

'

'

'

'

'

Repayments of Long-term Debt

193,689,000

1,308,382,000

10,900,000

8,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Issuance of debt

$243,184,000

$1,173,306,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Basis Spread on Variable Rate

'

'

'

'

'

'

'

'

2.75%

'

'

'

'

1.00%

3.75%

2.75%

'

'

'

LongTerm_Debt_Schedule_Of_Long

Long-Term Debt (Schedule Of Long-Term Debt Instruments) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Debt Instrument [Line Items]	'	'
Long-term Debt	$2,034,552	$1,984,144
Deferred Gain (Loss) on Discontinuation of Interest Rate Fair Value Hedge	3,292	4,802
Long-term Debt, Excluding Current Maturities	2,037,844	1,988,946
Combined Credit Agreements [Member]	'	'
Debt Instrument [Line Items]	'	'
Line of Credit Facility, Amount Outstanding	275,966	211,200
Senior Secured Second Lien Credit Facility [Member]	'	'
Debt Instrument [Line Items]	'	'
Secured Long-term Debt, Noncurrent	609,555	607,572
Senior Secured Second Lien Term Loan Due 2019 [Member]	'	'
Debt Instrument [Line Items]	'	'
Secured Long-term Debt, Noncurrent	195,058	194,423
Senior Notes Due 2015 [Member]	'	'
Debt Instrument [Line Items]	'	'
Senior Notes	0	10,472
Senior Notes Due 2016 [Member]	'	'
Debt Instrument [Line Items]	'	'
Senior Notes	0	8,044
Senior Notes Due 2019 [Member]	'	'
Debt Instrument [Line Items]	'	'
Senior Notes	293,744	293,243
Senior Notes Due 2021 [Member]	'	'
Debt Instrument [Line Items]	'	'
Senior Notes	310,229	309,190
Senior Subordinated Notes [Member]	'	'
Debt Instrument [Line Items]	'	'
Subordinated Long-term Debt, Noncurrent	$350,000	$350,000

LongTerm_Debt_Schedule_Of_Outs

Long-Term Debt (Schedule Of Outstanding Debt) (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
Combined Credit Agreements [Member]	'
Debt Instrument [Line Items]	'
Line of Credit Facility, Current Borrowing Capacity	325
Credit Agreement Repayment Term Trigerring Event, Maximum Threshold For Measurement	100
Senior Secured Second Lien Credit Facility [Member]	'
Debt Instrument [Line Items]	'
Credit Agreement Repayment Term Trigerring Event, Maximum Threshold For Measurement	100
Senior Notes Due 2019 [Member]	'
Debt Instrument [Line Items]	'
Debt Instrument Year Of Maturity	'2019
Canadian Credit Facility [Member]	'
Debt Instrument [Line Items]	'
Equity interests	100.00%
Multiple Subsidiaries Set One [Member] | U.S. Credit Facility [Member]	'
Debt Instrument [Line Items]	'
Equity interests	100.00%
Multiple Subsidiaries Set Two [Member] | U.S. Credit Facility [Member]	'
Debt Instrument [Line Items]	'
Equity interests	65.00%
Maximum [Member] | U.S. Credit Facility [Member]	'
Debt Instrument [Line Items]	'
Commitment fee percentage	1.75%
Applicable margin in addition to interest rate	2.75%
First Mortgage [Member] | Combined Credit Agreements [Member]	'
Debt Instrument [Line Items]	'
Line of Credit Facility, Current Borrowing Capacity	325	[1],[2]
Scheduled maturity date	6-Sep-16	[3]
Debt Instrument, Potential Earliest Maturity Date	'October 1, 2015	[3]
Debt Instrument, Interest Rate, Stated Percentage	4.09%	[4]
Base Interest Rate Options	'LIBOR, ABR, CDOR	[5],[6]
Financial covenants	'- Minimum current ratio of 1.0 - Minimum EBITDA to cash interest expense ratio of 1.10 - Maximum senior secured debt leverage ratio of 2.0	[7],[8]
Significant restrictive covenants	'- Incurrence of debt - Incurrence of liens - Payment of dividends - Equity purchases - Asset sales - Affiliate transactions - Limitations on derivatives and investments	[8],[9]
Optional redemption	'Any time	[8]
Make-whole redemption	'N/A
Change of control	'Event of default	[8]
Equity Clawback	'N/A
Estimated fair value	276	[10]
Current ratio	1
Minimum EBITDA to cash interest expense ratio	1.1
Senior secured debt leverage ratio	2
Second Lien Debt [Member] | Senior Secured Second Lien Credit Facility [Member]	'
Debt Instrument [Line Items]	'
Principal amount	625	[2]
Scheduled maturity date	21-Jun-19	[3]
Debt Instrument, Potential Earliest Maturity Date	'January 1, 2016	[3]
Debt Instrument, Interest Rate, Stated Percentage	7.00%
Base Interest Rate Options	'LIBOR floor of 1.25%; ABR floor of 2.25%
Financial covenants	'N/A
Significant restrictive covenants	'- Incurrence of debt - Incurrence of liens and 1st lien cap -Payment of dividends - Equity purchases - Asset sales - Affiliate transactions	[8],[9]
Optional redemption	'Any time, subject to re-pricing event June 21, 2015: 101	[8]
Make-whole redemption	'N/A
Change of control	'Put at 101% of principal plus accrued interest	[8]
Equity Clawback	'N/A
Estimated fair value	568.8	[10]
Percentage of principal plus accrued interest for change of control	101.00%
Second Lien Debt [Member] | Senior Secured Second Lien Term Loan Due 2019 [Member]	'
Debt Instrument [Line Items]	'
Principal amount	200	[2]
Scheduled maturity date	21-Jun-19	[3]
Debt Instrument, Potential Earliest Maturity Date	'January 1, 2016	[3]
Debt Instrument, Interest Rate, Stated Percentage	7.00%
Base Interest Rate Options	'LIBOR floor of 1.25%
Financial covenants	'N/A
Significant restrictive covenants	'- Incurrence of debt - Incurrence of liens and 1st lien cap -Payment of dividends - Equity purchases - Asset sales - Affiliate transactions	[8],[9]
Optional redemption	'Any time, subject to re-pricing event June 21, 2015: 101	[8]
Make-whole redemption	'N/A
Change of control	'Put at 101% of principal plus accrued interest	[8]
Equity Clawback	'N/A
Estimated fair value	182	[10]
Percentage of principal plus accrued interest for change of control	101.00%
Senior Notes [Member] | Senior Notes Due 2019 [Member]	'
Debt Instrument [Line Items]	'
Principal amount	298
Scheduled maturity date	15-Aug-19
Debt Instrument, Potential Earliest Maturity Date	'N/A
Debt Instrument, Interest Rate, Stated Percentage	9.13%
Base Interest Rate Options	'N/A
Financial covenants	'N/A
Significant restrictive covenants	'- Incurrence of debt - Incurrence of liens -Payment of dividends - Equity purchases - Asset sales - Affiliate transactions	[8],[9]
Optional redemption	'August 15, 2014: 104.563 2015: 103.042 2016: 101.521 2017: par	[8]
Make-whole redemption	'N/A
Make-whole redemption	0.50%
Change of control	'Put at 101% of principal plus accrued interest	[8]
Equity Clawback	'N/A
Estimated fair value	186.3	[10]
Percentage of principal plus accrued interest for change of control	101.00%
Senior Notes [Member] | Senior Notes Due 2021 [Member]	'
Debt Instrument [Line Items]	'
Principal amount	325
Scheduled maturity date	1-Jul-21
Debt Instrument, Potential Earliest Maturity Date	'N/A
Debt Instrument, Interest Rate, Stated Percentage	11.00%
Base Interest Rate Options	'N/A
Financial covenants	'N/A
Significant restrictive covenants	'- Incurrence of debt - Incurrence of liens -Payment of dividends - Equity purchases - Asset sales - Affiliate transactions	[8],[9]
Optional redemption	'July 1, 2019: 102.000 2020: par	[8]
Make-whole redemption	'Callable prior to July 1, 2019 at make-whole call price of Treasury +50 bps	[8]
Make-whole redemption	0.50%
Change of control	'Put at 101% of principal plus accrued interest	[8]
Equity Clawback	'Redeemable until July 1, 2016 at 111.00%, plus accrued interest for up to 35%	[8]
Equity Clawback	111.00%
Estimated fair value	213.7	[10]
Percentage of principal plus accrued interest for change of control	101.00%
Senior Subordinated Notes [Member] | Senior Subordinated Notes [Member]	'
Debt Instrument [Line Items]	'
Principal amount	350
Scheduled maturity date	1-Apr-16
Debt Instrument, Potential Earliest Maturity Date	'N/A
Debt Instrument, Interest Rate, Stated Percentage	7.13%
Base Interest Rate Options	'N/A
Financial covenants	'N/A
Significant restrictive covenants	'- Incurrence of debt - Incurrence of liens -Payment of dividends - Equity purchases - Asset sales - Affiliate transactions	[8],[9]
Optional redemption	'Any time	[8]
Make-whole redemption	'N/A
Change of control	'Put at 101% of principal plus accrued interest	[8]
Equity Clawback	'N/A
Estimated fair value	136.5	[10]
Percentage of principal plus accrued interest for change of control	101.00%
Libor [Member] | Maximum [Member] | Canadian Credit Facility [Member]	'
Debt Instrument [Line Items]	'
Applicable margin in addition to interest rate	3.75%
Libor [Member] | Minimum [Member] | Canadian Credit Facility [Member]	'
Debt Instrument [Line Items]	'
Applicable margin in addition to interest rate	2.75%
Libor [Member] | Second Lien Debt [Member] | Senior Secured Second Lien Credit Facility [Member]	'
Debt Instrument [Line Items]	'
Debt Instrument, Reference Rate, Floor	1.25%
Libor [Member] | Second Lien Debt [Member] | Senior Secured Second Lien Term Loan Due 2019 [Member]	'
Debt Instrument [Line Items]	'
Debt Instrument, Reference Rate, Floor	1.25%
ABR [Member] | Second Lien Debt [Member] | Senior Secured Second Lien Credit Facility [Member]	'
Debt Instrument [Line Items]	'
Debt Instrument, Reference Rate, Floor	2.25%
CDOR Rate [Member] | Maximum [Member] | Canadian Credit Facility [Member]	'
Debt Instrument [Line Items]	'
Applicable margin in addition to interest rate	3.75%
CDOR Rate [Member] | Minimum [Member] | Canadian Credit Facility [Member]	'
Debt Instrument [Line Items]	'
Applicable margin in addition to interest rate	2.75%
LIBOR [Member] | U.S. Credit Facility [Member]	'
Debt Instrument [Line Items]	'
Applicable margin in addition to interest rate	1.00%
Canadian Prime Rate [Member] | Maximum [Member] | Canadian Credit Facility [Member]	'
Debt Instrument [Line Items]	'
Applicable margin in addition to interest rate	2.75%
Canadian Prime Rate [Member] | Minimum [Member] | Canadian Credit Facility [Member]	'
Debt Instrument [Line Items]	'
Applicable margin in addition to interest rate	1.75%
U.S. Prime Rate [Member] | Maximum [Member] | Canadian Credit Facility [Member]	'
Debt Instrument [Line Items]	'
Applicable margin in addition to interest rate	2.75%
U.S. Prime Rate [Member] | Minimum [Member] | Canadian Credit Facility [Member]	'
Debt Instrument [Line Items]	'
Applicable margin in addition to interest rate	1.75%
2013 [Member] | Senior Notes [Member] | Senior Notes Due 2015 [Member]	'
Debt Instrument [Line Items]	'
Redemption percentage of par value	101.94%
2013 [Member] | Senior Notes [Member] | Senior Notes Due 2016 [Member]	'
Debt Instrument [Line Items]	'
Redemption percentage of par value	105.88%
2014 [Member] | Second Lien Debt [Member] | Senior Secured Second Lien Credit Facility [Member]	'
Debt Instrument [Line Items]	'
Redemption percentage of par value	102.00%
2014 [Member] | Second Lien Debt [Member] | Senior Secured Second Lien Term Loan Due 2019 [Member]	'
Debt Instrument [Line Items]	'
Redemption percentage of par value	102.00%
2014 [Member] | Senior Notes [Member] | Senior Notes Due 2019 [Member]	'
Debt Instrument [Line Items]	'
Redemption percentage of par value	104.56%
2014 [Member] | Senior Subordinated Notes [Member] | Senior Subordinated Notes [Member]	'
Debt Instrument [Line Items]	'
Redemption percentage of par value	100.00%
2015 [Member] | Second Lien Debt [Member] | Senior Secured Second Lien Credit Facility [Member]	'
Debt Instrument [Line Items]	'
Redemption percentage of par value	101.00%
2015 [Member] | Second Lien Debt [Member] | Senior Secured Second Lien Term Loan Due 2019 [Member]	'
Debt Instrument [Line Items]	'
Redemption percentage of par value	101.00%
2015 [Member] | Senior Notes [Member] | Senior Notes Due 2019 [Member]	'
Debt Instrument [Line Items]	'
Redemption percentage of par value	103.04%
2016 [Member] | Senior Notes [Member] | Senior Notes Due 2019 [Member]	'
Debt Instrument [Line Items]	'
Redemption percentage of par value	101.52%
2017 [Member] | Senior Notes [Member] | Senior Notes Due 2019 [Member]	'
Debt Instrument [Line Items]	'
Redemption percentage of par value	100.00%
2019 [Member] | Senior Notes [Member] | Senior Notes Due 2021 [Member]	'
Debt Instrument [Line Items]	'
Redemption percentage of par value	102.00%
2020 [Member] | Senior Notes [Member] | Senior Notes Due 2021 [Member]	'
Debt Instrument [Line Items]	'
Redemption percentage of par value	100.00%
[1]	The principal amount for the Combined Credit Agreements represents the global borrowing base as of SeptemberB 30, 2014.
[2]	Borrowings under the Amended and Restated U.S. Credit Facility, Second Lien Term Loan and Second Lien Notes due 2019 are guaranteed by certain of Quicksilverbs domestic subsidiaries and are secured (on a first priority basis with respect to the Amended and Restated U.S. Credit Facility and on a second priority basis with respect to the Second Lien Term Loan and the Second Lien Notes due 2019) by 100% of the equity interests of each of Cowtown Pipeline Management, Inc., Cowtown Pipeline Funding, Inc., Cowtown Gas Processing L.P., Cowtown Pipeline L.P., Barnett Shale Operating LLC, Silver Stream Pipeline Company LLC, QPP Parent LLC and QPP Holdings LLC (collectively, the bDomestic Pledged Equityb), 65% of the equity interests of Quicksilver Resources Canada Inc. (bQuicksilver Canadab) and Quicksilver Production Partners Operating Ltd. (with respect to the Amended and Restated U.S. Credit Facility, on a ratable basis with borrowings under the Amended and Restated Canadian Credit Facility) and the majority of Quicksilver's domestic proved oil and gas properties and related assets, (the bDomestic Pledged Propertyb).B Borrowings under the Amended and Restated Canadian Credit Facility are guaranteed by Quicksilver and certain of its domestic subsidiaries and are secured by the Domestic Pledged Equity, the Domestic Pledged Property, 100% of the equity interests of Quicksilver Canada (65% of which is on a ratable basis with the borrowings under the Amended and Restated U.S. Credit Facility) and any Canadian restricted subsidiaries, under the Amended and Restated Canadian Credit Facility, and 65% of the equity interests of Quicksilver Production Partners Operating Ltd. (which is on a ratable basis with the borrowings under the Amended and Restated U.S. Credit Facility) and the majority of Quicksilver Canada's oil and gas properties and related assets. The other debt presented is based upon structural seniority and priority of payment.
[3]	The Combined Credit Agreements are required to be repaid 91 days prior to the maturity of the Senior Subordinated Notes, the Second Lien Term Loan or the Second Lien Notes due 2019, if on the applicable date any amount of such debt remains outstanding. The Second Lien Term Loan and Second Lien Notes due 2019 are required to be repaid (1) 91 days prior to the maturity of the 2019 Senior Notes if more than $100 million of the 2019 Senior Notes remain outstanding and (2) 91 days prior to the maturity of the Senior Subordinated Notes if on the applicable date the amount remaining outstanding is greater than $100 million. As of SeptemberB 30, 2014, as presently structured and assuming no changes in the amounts outstanding, amounts outstanding under the Combined Credit Agreements would be due on October 1, 2015 and the Second Lien Term Loan and Second Lien Notes due 2019 would be due on January 1, 2016.
[4]	Represents the weighted average borrowing rate payable to lenders.
[5]	Amounts outstanding under the Amended and Restated U.S. Credit Facility bear interest, at our election, at (i) adjusted LIBOR (as defined in the Amended and Restated U.S. Credit Facility) plus an applicable margin between 2.75% and 3.75%, (ii)B ABR (as defined in the Amended and Restated U.S. Credit Facility), which is the greatest of (a)B the prime rate announced by JPMorgan, (b)B the federal funds rate plus 0.50% and (c)B adjusted LIBOR for an interest period of one month plus 1.00%, plus, in each case under scenario (ii), an applicable margin between 1.75% and 2.75%. We also pay a per annum fee on the LC Exposure (as defined in the Amended and Restated U.S. Credit Facility) of all letters of credit issued under the Amended and Restated U.S. Credit Facility equal to the applicable margin, with respect to Eurodollar loans, and a commitment fee on the unused availability under the Amended and Restated U.S. Credit Facility of 0.50%.
[6]	Amounts outstanding under the Amended and Restated Canadian Credit Facility bear interest, at our election, at (i)B the CDOR Rate (as defined in the Amended and Restated Canadian Credit Facility) plus an applicable margin between 2.75% and 3.75%, (ii)B the Canadian Prime Rate (as defined in the Amended and Restated Canadian Credit Facility) plus an applicable margin between 1.75% and 2.75%, (iii)B the U.S. Prime Rate (as defined in the Amended and Restated Canadian Credit Facility) plus an applicable margin between 1.75% and 2.75% and (iv)B adjusted LIBOR (as defined in the Amended and Restated Canadian Credit Facility) plus an applicable margin between 2.75% and 3.75%. We pay a per annum fee on the LC Exposure (as defined in the Amended and Restated Canadian Credit Facility) of all letters of credit issued under the Amended and Restated Canadian Credit Facility equal to the applicable margin, with respect to Eurodollar loans, and a commitment fee on the unused availability under the Amended and Restated Canadian Credit Facility of 0.50%.
[7]	As of September 30, 2014, the future minimum required interest coverage ratio for the Combined Credit Agreements is as follows:PeriodB Interest Coverage RatioB PeriodB Interest Coverage RatioQ4 2014B 1.10B Q4 2015B 1.20Q1 2015B 1.10B Q1 2016B 1.50Q2 2015B 1.15B Q2 2016B 2.00Q3 2015B 1.15 In November 2014, the Combined Credit Agreements were amended to eliminate the requirement to meet the minimum interest coverage ratio covenant beginning in the fourth quarter of 2014 through and including the fourth quarter of 2015. A minimum EBITDAX covenant was added beginning in the fourth quarter of 2014 through and including the fourth quarter of 2015 that requires the following minimum EBITDAX levels:B Minimum EBITDAX CovenantB (in millions)Three months ending December 31, 2014$30.0Six months ending March 31, 201559.0Nine months ending June 30, 201587.25Twelve months ending September 30, 2015120.5Twelve months ending December 31, 2015122.0
[8]	The information presented in this table is qualified in all respects by reference to the full text of the covenants, provisions and related definitions contained in the documents governing the various components of our debt.
[9]	Our indentures require us to reinvest or repay senior debt with net cash proceeds from certain asset sales within one year.
[10]	The estimated fair value is determined using market quotations based on recent trade activity for fixed rate obligations (bLevel 2b inputs). Our Second Lien Term Loan and Second Lien Notes due 2019 feature variable interest rates and we estimate their fair value by using market quotations based on recent trade activity (bLevel 3b input). We consider our Combined Credit Agreements which have a variable interest rate to have a fair value equal to their carrying value (bLevel 1b input).

LongTerm_Debt_LongTerm_Debt_Mi

Long-Term Debt Long-Term Debt (Minimum Required Interest Coverage Ratio) (Details) (Minimum [Member], Combined Credit Agreements [Member])	9 Months Ended
	Sep. 30, 2014
Q4 2014 [Member]	'
Debt Instrument [Line Items]	'
Interest coverage ratio	1.1
Q1 2015 [Member]	'
Debt Instrument [Line Items]	'
Interest coverage ratio	1.1
Q2 2015 [Member]	'
Debt Instrument [Line Items]	'
Interest coverage ratio	1.15
Q3 2015 [Member]	'
Debt Instrument [Line Items]	'
Interest coverage ratio	1.15
Q4 2015 [Member]	'
Debt Instrument [Line Items]	'
Interest coverage ratio	1.2
Q1 2016 [Member]	'
Debt Instrument [Line Items]	'
Interest coverage ratio	1.5
Q2 2016 [Member]	'
Debt Instrument [Line Items]	'
Interest coverage ratio	2

LongTerm_Debt_Minimum_EBITDAX_

Long-Term Debt Minimum EBITDAX Covenant (Details) (Subsequent Event [Member], Minimum [Member], Combined Credit Agreements [Member], USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
Three Months Ended December 31, 2014 [Member]	'
Debt Instrument [Line Items]	'
Minimum EBITDAX Covenant	$30
Six months ending March 31, 2015 [Member]	'
Debt Instrument [Line Items]	'
Minimum EBITDAX Covenant	59
Nine months ending June 30, 2015 [Member]	'
Debt Instrument [Line Items]	'
Minimum EBITDAX Covenant	87.25
Twelve months ending September 30, 2015 [Member]	'
Debt Instrument [Line Items]	'
Minimum EBITDAX Covenant	120.5
Twelve months ending December 31, 2015 [Member]	'
Debt Instrument [Line Items]	'
Minimum EBITDAX Covenant	$122

Income_Taxes_Valuation_Allowan

Income Taxes Valuation Allowance (Details) (USD $)	9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
Valuation Allowance [Line Items]	'
Income Taxes Receivable	$7.60
UNITED STATES	'
Valuation Allowance [Line Items]	'
Tax Valuation Allowance Expense, Federal	372
CANADA	'
Valuation Allowance [Line Items]	'
Tax Valuation Allowance Expense, Federal	$60.70

Fortune_Creek_Details

Fortune Creek (Details)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014
	USD ($)	CAD	KKR [Member]
			CAD
			Y
Minimum Expenditures Required to Acquire Productive Assets	$120,000,000	'	'
Capital Contribution, Fortune Creek	'	28,000,000	'
Reduction in Gathering Rate, Fortune Creek	'	0.13	'
Dedicated years for gas production	'	'	10
Payments to acquire interest in joint venture	'	'	125,000,000
Percentage of interest by parent in the partnership	'	'	50.00%

Quicksilver_Stockholders_Equit2

Quicksilver Stockholders' Equity (Narrative) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
In Millions, except Share data, unless otherwise specified			Restricted Stock [Member]	Restricted Stock [Member]	Equity Option [Member]	Equity Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'
Common stock, shares authorized	400,000,000	400,000,000	'	'	'	'
Shares of common stock outstanding	179,800,000	177,300,000	'	'	'	'
Common stock, par value	$0.01	$0.01	'	'	'	'
Preferred stock, shares authorized	10,000,000	10,000,000	'	'	'	'
Preferred stock, shares outstanding	0	0	'	'	'	'
Preferred stock, par value	$0.01	$0.01	'	'	'	'
Total intrinsic values of options	'	'	'	'	6,300,000	'
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	'	'	$14.80	'	$1	'
Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition	'	'	'July 2017	'	'August 2016	'
Estimated grant date fair value	'	'	12.6	'	'	'
Fair value of RSUs settled in cash	'	'	0.5	'	'	'
Allocated Share-based Compensation Expense	'	'	8.4	12.2	1.1	3.2
Total fair value of shares vested	'	'	$10.20	'	'	'
Common stock, shares issued	187,222,654	183,994,879	'	'	'	'
Treasury stock, shares	7,444,372	6,698,640	'	'	'	'

Quicksilver_Stockholders_Equit3

Quicksilver Stockholders' Equity (Assumptions For The Black-Scholes Option Pricing Model For Stock Options Issued) (Details) (USD $)	9 Months Ended
	Sep. 30, 2013
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]	'
Weighted avg grant date fair value	$1.05
Weighted avg risk-free interest rate	1.31%
Expected life (in years)	'4 years 10 months 25 days
Wtd avg volatility	69.00%
Expected dividends	0.00%

Quicksilver_Stockholders_Equit4

Quicksilver Stockholders' Equity (Stock Option Activity) (Details) (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Equity Option [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Allocated Share-based Compensation Expense	$1,100,000	$3,200,000
Outstanding at end of period, Shares	6,300,000	'
Stock Options [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Outstanding at beginning of period, Shares	6,771,578	'
Forfeited, Shares	-44,950	'
Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price	$1.65	'
Expired, Shares	-111,494	'
Outstanding at end of period, Shares	6,615,134	'
Outstanding at beginning of period, Wtd Avg Exercise Price	$7.82	'
Exercisable at end of period, Shares	5,232,903	'
Expired, Wtd Avg Exercise Price	$9.83	'
Outstanding at end of period, Wtd Avg Exercise Price	$7.83	'
Exercisable at end of period, Wtd Avg Exercise Price	$9.18	'
Outstanding at end of period, Wtd Avg Remaining Contractual Life, Years	'5 years 164 days	'
Exercisable at end of period, Wtd Avg Remaining Contractual Life, Years	'4 years 236 days	'
Outstanding at end of period, Aggregate Intrinsic Value	0	'
Exercisable at end of period, Aggregate Intrinsic Value	$0	'

Quicksilver_Stockholders_Equit5

Quicksilver Stockholders' Equity (Restricted Stock And Stock Unit Activity) (Details) (USD $)	9 Months Ended
In Millions, except Share data, unless otherwise specified	Sep. 30, 2014
Restricted Stock [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$14.80
Payable In Shares [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Outstanding at beginning of period, Shares	5,668,090
Granted, Shares	4,765,425
Vested, Shares	-2,559,959
Forfeited, Shares	-348,554
Outstanding at end of period, Shares	7,525,002
Outstanding at beginning of period, Wtd Avg Grant Date Fair Value	$3.90
Granted, Wtd Avg Grant Date Fair Value	$2.64
Vested, Wtd Avg Grant Date Fair Value	$4.86
Forfeited, Wtd Avg Grant Date Fair Value	$3.09
Outstanding at end of period, Wtd Avg Grant Date Fair Value	$2.82
Payable In Cash [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Outstanding at beginning of period, Shares	1,572,341
Granted, Shares	0
Vested, Shares	-631,275
Forfeited, Shares	-33,458
Outstanding at end of period, Shares	907,608
Outstanding at beginning of period, Wtd Avg Grant Date Fair Value	$3.69
Granted, Wtd Avg Grant Date Fair Value	$0
Vested, Wtd Avg Grant Date Fair Value	$4.29
Forfeited, Wtd Avg Grant Date Fair Value	$3.20
Outstanding at end of period, Wtd Avg Grant Date Fair Value	$3.32

Earnings_Per_Share_Reconciliat

Earnings Per Share (Reconciliation Of Components Used To Compute Basic And Diluted Net Income Per Common Share) (Details) (USD $)	3 Months Ended				9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'		'		'		'
Net income (loss) attributable to Quicksilver	$23,757		$10,577		($71,171)		$193,397
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic	772	[1]	312	[1]	0	[1]	5,111	[1]
Income (loss) available to shareholders	$22,985		$10,265		($71,171)		$188,286
Weighted Average Number of Shares Outstanding, Basic	173,936,000		171,682,000		173,783,000		171,403,000
Share-based compensation awards	216,000	[2]	311,000	[2]	0	[2]	170,000	[2]
Weighted Average Number of Shares Outstanding, Diluted	174,152,000		171,993,000		173,783,000		171,573,000
Earnings (loss) per common share - basic	$0.13		$0.06		($0.41)		$1.10
Earnings (loss) per common share - diluted	$0.13	[2]	$0.06	[2]	($0.41)	[2]	$1.10	[2]
Stock Options [Member]	'		'		'		'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'		'		'		'
Antidilutive shares excluded from the diluted share calculation	6,600,000		6,200,000		6,600,000		5,500,000
Restricted Stock Units (RSUs) [Member]	'		'		'		'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'		'		'		'
Antidilutive shares excluded from the diluted share calculation	1,200,000		200,000		800,000		200,000
[1]	Restricted share awards that contain nonforfeitable rights to dividends are participating securities and, therefore, should be included in computing earnings per share using the two-class method. Participating securities, however, do not participate in undistributed net losses because there is no contractual obligation to do so.
[2]	For the three months ended SeptemberB 30, 2014, 6.6 million shares associated with our stock options and 1.2 million shares associated with our unvested RSUs were antidilutive and, therefore, excluded from the diluted share calculations. For the three months ended SeptemberB 30, 2013, 6.2 million shares associated with our stock options and 0.2 million shares associated with our unvested RSUs were antidilutive and, therefore, excluded from the diluted share calculations. For the nine months ended SeptemberB 30, 2014, 6.6 million shares associated with our stock options and 0.8 million shares associated with our unvested RSUs were antidilutive and, therefore, excluded from the diluted share calculations. For the nine months ended SeptemberB 30, 2013, 5.5 million shares associated with our stock options and 0.2 million shares associated with our unvested RSUs were antidilutive and, therefore, excluded from the diluted share calculations.

Condensed_Consolidating_Financ2

Condensed Consolidating Financial Information (Schedule Of Condensed Consolidated Balance Sheets) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets	$396,300	$393,960
Property and equipment	812,480	860,805
Investment in subsidiaries (equity method)	0	0
Other assets	59,477	114,961
Total assets	1,268,257	1,369,726
Current liabilities	108,524	134,797
Long-term liabilities	2,257,217	2,240,899
Stockholders' equity	-1,097,484	-1,005,970
Total liabilities and stockholders' equity	1,268,257	1,369,726
Quicksilver Resources Inc. [Member]	'	'
Current assets	338,424	349,586
Property and equipment	417,921	455,822
Investment in subsidiaries (equity method)	-227,994	-217,852
Other assets	457,285	472,792
Total assets	985,636	1,060,348
Current liabilities	103,042	124,275
Long-term liabilities	1,980,078	1,942,043
Stockholders' equity	-1,097,484	-1,005,970
Total liabilities and stockholders' equity	985,636	1,060,348
Restricted Guarantor Subsidiaries [Member]	'	'
Current assets	13,096	10,735
Property and equipment	14,625	15,486
Investment in subsidiaries (equity method)	0	0
Other assets	0	0
Total assets	27,721	26,221
Current liabilities	13,401	12,210
Long-term liabilities	19,241	19,242
Stockholders' equity	-4,921	-5,231
Total liabilities and stockholders' equity	27,721	26,221
Restricted Non-Guarantor Subsidiaries [Member]	'	'
Current assets	65,733	53,034
Property and equipment	305,197	307,865
Investment in subsidiaries (equity method)	-23,409	-33,840
Other assets	15,473	32,892
Total assets	362,994	359,951
Current liabilities	11,064	17,167
Long-term liabilities	575,003	542,659
Stockholders' equity	-223,073	-199,875
Total liabilities and stockholders' equity	362,994	359,951
Restricted Subsidiary Eliminations [Member]	'	'
Current assets	-23,193	-19,642
Property and equipment	0	0
Investment in subsidiaries (equity method)	227,994	217,852
Other assets	-413,281	-390,723
Total assets	-208,480	-192,513
Current liabilities	-23,193	-19,642
Long-term liabilities	-413,281	-390,723
Stockholders' equity	227,994	217,852
Total liabilities and stockholders' equity	-208,480	-192,513
Quicksilver And Restricted Subsidiaries [Member]	'	'
Current assets	394,060	393,713
Property and equipment	737,743	779,173
Investment in subsidiaries (equity method)	-23,409	-33,840
Other assets	59,477	114,961
Total assets	1,167,871	1,254,007
Current liabilities	104,314	134,010
Long-term liabilities	2,161,041	2,113,221
Stockholders' equity	-1,097,484	-993,224
Total liabilities and stockholders' equity	1,167,871	1,254,007
Unrestricted Non-Guarantor Subsidiaries [Member]	'	'
Current assets	-455	909
Property and equipment	0	0
Investment in subsidiaries (equity method)	-23,429	-33,840
Other assets	0	0
Total assets	-23,884	-32,931
Current liabilities	-475	888
Long-term liabilities	0	0
Stockholders' equity	-23,409	-33,819
Total liabilities and stockholders' equity	-23,884	-32,931
Fortune Creek [Member]	'	'
Current assets	1,746	1,110
Property and equipment	74,737	81,632
Investment in subsidiaries (equity method)	0	0
Other assets	0	0
Total assets	76,483	82,742
Current liabilities	3,736	1,671
Long-term liabilities	1,525	1,546
Stockholders' equity	71,222	79,525
Total liabilities and stockholders' equity	76,483	82,742
Consolidating Eliminations [Member]	'	'
Current assets	949	-1,772
Property and equipment	0	0
Investment in subsidiaries (equity method)	46,838	67,680
Other assets	0	0
Total assets	47,787	65,908
Current liabilities	949	-1,772
Long-term liabilities	94,651	126,132
Stockholders' equity	-47,813	-58,452
Total liabilities and stockholders' equity	$47,787	$65,908

Condensed_Consolidating_Financ3

Condensed Consolidating Financial Information (Schedule of Condensed Consolidated Statements Of Income (Loss)) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	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

Condensed_Consolidating_Financ4

Condensed Consolidating Financial Information (Schedule of Condensed Consolidated Statements of Cash Flows) (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Schedule of Equity Method Investments [Line Items]	'	'
Net cash flow provided (used) by operating activities	($4,983)	($81,103)
Purchases of property, plant and equipment	-111,444	-78,549
Investment in subsidiary	0	'
Proceeds from sale of properties and equipment	1,942	2,994
Payments to acquire marketable securities	-55,890	-142,823
Proceeds from Sale and Maturity of Marketable Securities	222,025	13,178
Net cash used by investing activities	152,220	300,515
Issuance of debt	243,184	1,173,306
Repayments of debt	-193,689	-1,308,382
Debt issuance costs	-225	-25,868
Intercompany note	0	0
Intercompany financing	0	'
Contribution received	0	'
Distribution of Fortune Creek Partnership funds	-37,113	-8,079
Purchase of treasury stock	-2,388	-1,472
Net cash flow provided (used) by financing activities	9,769	-170,495
Effect of exchange rates on cash	2,216	2,610
Net increase (decrease) in cash and equivalents	159,222	51,527
Cash and cash equivalents at beginning of period	89,103	4,951
Cash and cash equivalents at end of period	248,325	56,478
Quicksilver Resources Inc. [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Net cash flow provided (used) by operating activities	-39,474	-113,029
Purchases of property, plant and equipment	-88,119	-53,291
Investment in subsidiary	-1,246	'
Proceeds from sale of properties and equipment	1,445	2,977
Payments to acquire marketable securities	-55,890	-142,823
Proceeds from Sale and Maturity of Marketable Securities	222,025	13,178
Net cash used by investing activities	173,802	325,756
Issuance of debt	174,000	1,170,266
Repayments of debt	-138,651	-1,157,969
Debt issuance costs	-225	-25,868
Intercompany note	-22,558	-147,103
Intercompany financing	0	'
Contribution received	0	'
Distribution of Fortune Creek Partnership funds	0	0
Purchase of treasury stock	-2,388	-1,472
Net cash flow provided (used) by financing activities	10,178	-162,146
Effect of exchange rates on cash	0	0
Net increase (decrease) in cash and equivalents	144,506	50,581
Cash and cash equivalents at beginning of period	83,893	4,618
Cash and cash equivalents at end of period	228,399	55,199
Restricted Guarantor Subsidiaries [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Net cash flow provided (used) by operating activities	-688	-19
Purchases of property, plant and equipment	-57	19
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	0
Net cash used by investing activities	-57	19
Issuance of debt	0	0
Repayments of debt	0	0
Debt issuance costs	0	0
Intercompany note	0	0
Intercompany financing	745	'
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	745	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	28,843	25,517
Purchases of property, plant and equipment	-23,247	-24,752
Investment in subsidiary	-26,395	'
Proceeds from sale of properties and equipment	497	17
Payments to acquire marketable securities	0	0
Proceeds from Sale and Maturity of Marketable Securities	0	0
Net cash used by investing activities	-49,145	-24,735
Issuance of debt	69,184	3,040
Repayments of debt	-55,038	-150,413
Debt issuance costs	0	0
Intercompany note	22,558	147,103
Intercompany financing	501	'
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	37,205	-270
Effect of exchange rates on cash	-2,718	-512
Net increase (decrease) in cash and equivalents	14,185	0
Cash and cash equivalents at beginning of period	4,135	0
Cash and cash equivalents at end of period	18,320	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	1,246	'
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	1,246	'
Issuance of debt	0	'
Repayments of debt	0	'
Debt issuance costs	0	'
Intercompany note	0	'
Intercompany financing	-1,246	'
Contribution received	0	'
Distribution of Fortune Creek Partnership funds	0	'
Purchase of treasury stock	0	'
Net cash flow provided (used) by financing activities	-1,246	'
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	-11,319	-87,531
Purchases of property, plant and equipment	-111,423	-78,024
Investment in subsidiary	-26,395	'
Proceeds from sale of properties and equipment	1,942	2,994
Payments to acquire marketable securities	-55,890	-142,823
Proceeds from Sale and Maturity of Marketable Securities	222,025	13,178
Net cash used by investing activities	125,846	301,040
Issuance of debt	243,184	1,173,306
Repayments of debt	-193,689	-1,308,382
Debt issuance costs	-225	-25,868
Intercompany note	0	0
Intercompany financing	0	'
Contribution received	0	'
Distribution of Fortune Creek Partnership funds	0	0
Purchase of treasury stock	-2,388	-1,472
Net cash flow provided (used) by financing activities	46,882	-162,416
Effect of exchange rates on cash	-2,718	-512
Net increase (decrease) in cash and equivalents	158,691	50,581
Cash and cash equivalents at beginning of period	88,028	4,618
Cash and cash equivalents at end of period	246,719	55,199
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	0
Net cash used by investing activities	-26,395	0
Issuance of debt	0	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	6,336	6,428
Purchases of property, plant and equipment	-21	-525
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	0
Net cash used by investing activities	-21	-525
Issuance of debt	0	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	-37,113	-8,079
Purchase of treasury stock	0	0
Net cash flow provided (used) by financing activities	-10,718	-8,079
Effect of exchange rates on cash	4,934	3,122
Net increase (decrease) in cash and equivalents	531	946
Cash and cash equivalents at beginning of period	1,053	333
Cash and cash equivalents at end of period	1,584	1,279
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	'
Issuance of debt	0	'
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	95,587	0
Sandwash Basin [Member] | Quicksilver Resources Inc. [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates	95,587	'
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	95,587	'
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	'
Synergy [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates	0	42,297
Synergy [Member] | Quicksilver Resources Inc. [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates	'	42,297
Synergy [Member] | Restricted Guarantor Subsidiaries [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates	'	0
Synergy [Member] | Restricted Non-Guarantor Subsidiaries [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates	'	0
Synergy [Member] | Quicksilver And Restricted Subsidiaries [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates	'	42,297
Synergy [Member] | Unrestricted Non-Guarantor Subsidiaries [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates	'	0
Synergy [Member] | Fortune Creek [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Proceeds from Divestiture of Interest in Subsidiaries and Affiliates	'	$0

Segment_Information_Operating_

Segment Information (Operating Income And Property And Equipment Costs Incurred) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]	'	'	'	'	'
Number of geographical segments	2	'	2	'	'
Revenue	$163,498	$153,116	$373,316	$447,318	'
Depletion, depreciation and accretion	13,969	14,390	42,584	47,911	'
Impairment of Oil and Gas Properties	135	0	135	0	'
Operating income (loss)	64,784	60,049	67,266	451,073	'
Property and equipment costs incurred	28,456	20,721	107,584	72,455	'
Property, plant and equipment - net	812,480	'	812,480	'	860,805
Total assets	1,268,257	'	1,268,257	'	1,369,726
UNITED STATES	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Revenue	120,513	114,002	269,310	334,804	'
Depletion, depreciation and accretion	8,096	8,402	23,652	29,745	'
Impairment of Oil and Gas Properties	0	'	0	'	'
Operating income (loss)	57,809	56,911	78,891	456,624	'
Property and equipment costs incurred	20,912	15,147	85,814	50,459	'
Property, plant and equipment - net	415,163	'	415,163	'	451,840
Total assets	796,931	'	796,931	'	895,388
CANADA	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Revenue	42,072	38,407	101,198	110,052	'
Depletion, depreciation and accretion	4,171	4,114	13,779	12,458	'
Impairment of Oil and Gas Properties	0	'	0	'	'
Operating income (loss)	16,364	11,076	20,199	30,126	'
Property and equipment costs incurred	7,254	4,288	20,924	9,972	'
Property, plant and equipment - net	303,827	'	303,827	'	306,423
Total assets	362,994	'	362,994	'	359,951
Midstream [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Revenue	5,184	6,381	16,157	19,198	'
Depletion, depreciation and accretion	1,256	1,300	3,744	3,947	'
Impairment of Oil and Gas Properties	135	'	135	'	'
Operating income (loss)	2,367	3,107	7,700	9,593	'
Property and equipment costs incurred	72	1,615	83	2,369	'
Property, plant and equipment - net	89,362	'	89,362	'	97,118
Total assets	104,204	'	104,204	'	108,963
Corporate [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Revenue	0	0	0	0	'
Depletion, depreciation and accretion	446	574	1,409	1,761	'
Impairment of Oil and Gas Properties	0	'	0	'	'
Operating income (loss)	-11,756	-11,045	-39,524	-45,270	'
Property and equipment costs incurred	218	-329	763	9,655	'
Property, plant and equipment - net	4,128	'	4,128	'	5,424
Total assets	4,128	'	4,128	'	5,424
Elimination [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Revenue	-4,271	-5,674	-13,349	-16,736	'
Depletion, depreciation and accretion	0	0	0	0	'
Impairment of Oil and Gas Properties	0	'	0	'	'
Operating income (loss)	0	0	0	0	'
Property and equipment costs incurred	0	0	0	0	'
Property, plant and equipment - net	0	'	0	'	0
Total assets	$0	'	$0	'	$0

Supplemental_Cash_Flow_Informa2

Supplemental Cash Flow Information (Cash Paid Or Received For Interest And Income Taxes) (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Supplemental Cash Flow Information [Abstract]	'	'
Interest, net of capitalized interest	$124,408	$227,189
Income taxes	($7,844)	$1,217

Supplemental_Cash_Flow_Informa3

Supplemental Cash Flow Information (Other Significant Noncash Transactions) (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Supplemental Cash Flow Information [Abstract]	'	'
Capital Expenditures Incurred but Not yet Paid	$7,612	$4,867

Transactions_With_Related_Part1

Transactions With Related Parties (Details) (USD $)	9 Months Ended			1 Months Ended	9 Months Ended	1 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Mar. 31, 2014	Sep. 30, 2014	Mar. 31, 2014	Sep. 30, 2013	Sep. 30, 2014
	Mercury Exploration Company [Member]	Mercury Exploration Company [Member]	Darden Family [Member]	Thomas F. Darden [Member]	Thomas F. Darden [Member]	Restricted Stock [Member]	Use Of Airplane [Member]	Commissions Paid [Member]
						Thomas F. Darden [Member]	Darden Family [Member]	Darden Family [Member]
Related Party Transaction [Line Items]	'	'	'	'	'	'	'	'
Revenue from Related Parties	$100,000	$100,000	'	'	'	'	'	'
Consulting fee payments	'	'	'	'	405,000	'	'	'
Office allowance payments	'	'	'	'	112,500	'	'	'
COBRA payments	'	'	'	'	39,000	'	'	'
Cash bonus	'	'	'	286,650	'	'	'	'
Vested equity awards	'	'	'	'	'	72,662	'	'
Percentage of ownership interest	'	'	30.00%	'	'	'	'	'
Payments to related parties	'	'	'	'	'	'	300,000	200,000
Options issued, fair value	'	'	'	$191,100	'	'	'	'