Long-Term Debt (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		0 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 02, 2012 14 1/4% Senior Secured Notes Due 2015 [Member]	Mar. 31, 2012 14 1/4% Senior Secured Notes Due 2015 [Member]	Mar. 02, 2012 12.5% Senior Notes Due 2016 [Member]	Mar. 31, 2012 12.5% Senior Notes Due 2016 [Member]	Mar. 31, 2012 Premium And Expenses [Member]	Mar. 31, 2012 Write Off Of Unamortized Discounts [Member]
Debt Instrument [Line Items]
Repayments of long-term debt	$ 71.7	$ 239.3	$ 25.5		$ 40.0
Loss on debt extinguishment	7.2	31.8					6.2	1.0
Interest rate of the debt instruments				14.25%		12.50%
Maturity year of the debt instruments				2015		2016
Debt reduction from payment		$ 204.7