Debt Narrative (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended	3 Months Ended		5 Months Ended	12 Months Ended				1 Months Ended		0 Months Ended		2 Months Ended	12 Months Ended		0 Months Ended							1 Months Ended	3 Months Ended	1 Months Ended		0 Months Ended	12 Months Ended			0 Months Ended		12 Months Ended			0 Months Ended	3 Months Ended			0 Months Ended	25 Months Ended	12 Months Ended			12 Months Ended
	Sep. 29, 2010	Sep. 30, 2011	Jun. 30, 2011	Oct. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Aug. 05, 2009	Dec. 31, 2011 DNK Transaction	Dec. 31, 2011 Revolving Credit Facility	Aug. 20, 2009 9.5% Senior Notes due 2017	Jun. 16, 2009 9.5% Senior Notes due 2017	Aug. 20, 2009 9.5% Senior Notes due 2017	Dec. 31, 2011 9.5% Senior Notes due 2017	Dec. 31, 2010 9.5% Senior Notes due 2017	Sep. 04, 2009 8.5% Senior Notes Payable due 2011	Aug. 20, 2009 8.5% Senior Notes Payable due 2011	Aug. 05, 2009 8.5% Senior Notes Payable due 2011	Jun. 16, 2009 8.5% Senior Notes Payable due 2011 Tender Offer	Oct. 29, 2010 9.5% Senior Notes due 2013	Aug. 16, 2010 9.5% Senior Notes due 2013	Jul. 15, 2010 9.5% Senior Notes due 2013	Jun. 30, 2010 9.5% Senior Notes due 2013	Sep. 30, 2011 9.5% Senior Notes due 2013	Jun. 30, 2010 9.5% Senior Notes due 2013 Minimum	Jun. 30, 2010 9.5% Senior Notes due 2013 Maximum	Sep. 29, 2010 9.5% Senior Notes due 2013 Tender Offer	Dec. 31, 2011 7.875% Senior Notes due 2018	Dec. 31, 2010 7.875% Senior Notes due 2018	Sep. 29, 2010 7.875% Senior Notes due 2018	Dec. 03, 2009 Line of Credit Amendment No. 3	May 16, 2007 Line of Credit Credit Agreement	Dec. 31, 2011 Line of Credit Revolving Credit Facility	Dec. 31, 2010 Line of Credit Revolving Credit Facility	May 16, 2007 Line of Credit Revolving Credit Facility	Mar. 10, 2008 Line of Credit Revolving Credit Facility Amendment No. 1 Amendment No. 2	Jun. 30, 2011 Line of Credit Senior Secured Term Loan Payable Through 2014 - A Senior Secured Term Loan Payable Through 2014 - B	Dec. 31, 2010 Line of Credit Senior Secured Term Loan Payable Through 2014 - A Senior Secured Term Loan Payable Through 2014 - B	Mar. 10, 2008 Line of Credit Senior Secured Term Loan Payable Through 2014 - A Senior Secured Term Loan Payable Through 2014 - B	Dec. 03, 2009 Line of Credit Senior Secured Term Loan Payable Through 2014 - A Amendment No. 3 Senior Secured Term Loan Payable Through 2014 - B	Dec. 31, 2011 Line of Credit Senior Secured Term Loan Payable Through 2014 - A Amendment No. 3 Senior Secured Term Loan Payable Through 2014 - B	Dec. 31, 2011 Term Loan Facility Senior Secured Term Loan Payable Through 2014 - A	Dec. 31, 2010 Term Loan Facility Senior Secured Term Loan Payable Through 2014 - A	May 16, 2007 Term Loan Facility Senior Secured Term Loan Payable Through 2014 - A	Dec. 31, 2011 Term Loan Facility Senior Secured Term Loan Payable Through 2014 - B	Dec. 31, 2010 Term Loan Facility Senior Secured Term Loan Payable Through 2014 - B	Mar. 10, 2008 Term Loan Facility Senior Secured Term Loan Payable Through 2014 - B	Mar. 10, 2008 Term Loan Facility Senior Secured Term Loan Payable Through 2014 - B Amendment No. 1 Amendment No. 2
Credit Agreement
Line of Credit Facility, Maximum Borrowing Capacity					$ 413.3					$ 400.0																						$ 1,355.0			$ 300.0	$ 400.0								$ 1,055.0				$ 1,200.0
Credit facility, Variable rate, Spread over LIBOR																																			1.75%				2.41%					2.00%			2.75%
Increase (Decrease) in Deferred Charges													10																		1					16
Early Repayment of Senior Debt																																					150.0	115.5		150.0
Increase in Acceptable Use, Amount																															37.5
Increase in Acceptable Use, Percentage of Aggregate Principal Term Loan Prepayment																																									75.00%
Line of Credit Facility, Covenant, Minimum Liquidity Requirement																															250
Acceptable Use, Amount								20
Notes Payable
Debt Issuance, Face Amount											180.0	245.0	180.0	425.0	425.0													250.0	250.0	250.0
Debt Instrument, Fixed Interest Rate, Percentage														9.50%	9.50%			8.50%										7.875%	7.875%
Debt Instrument, Maturity Date														Dec. 31, 2017	Dec. 31, 2017													Dec. 31, 2018	Dec. 31, 2018				May 16, 2013	May 16, 2013								May 16, 2014	May 16, 2014		May 16, 2014	May 16, 2014
Proceeds from Issuance of Debt					0	30.6	423.8				185.4	238.4
Aggregate principal to be redeemed or prepaid, Announced																		20.0				66.8
Purchase or redemption price, Percentage of principal, Announced																						101.533%
Aggregate principal purchased or redeemed	4.00								25.90							19.90	180.10		225.00	29.40	66.80		34.90	73.30			220.60
Purchase or redemption price, Percentage of principal																100.00%				101.583%	101.533%				101.75%	101.833%
Premium included in issuance proceeds											5.4		5.4
Gains (losses) on modification or extinguishment of Debt	$ (5.0)	$ (1.3)	$ (0.8)	$ (3.4)	$ (2.1)	$ (8.4)	$ (7.1)