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