Subsequent Events (Details) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended			3 Months Ended	9 Months Ended				0 Months Ended		1 Months Ended	3 Months Ended											1 Months Ended		9 Months Ended				3 Months Ended	9 Months Ended						0 Months Ended	3 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Aug. 05, 2014 Senior Notes [Member]	Sep. 30, 2014 Senior Secured Notes, due 2018 [Member]	Sep. 30, 2013 Senior Secured Notes, due 2018 [Member]	Aug. 05, 2014 Senior Secured Notes, due 2018 [Member]	Dec. 31, 2013 Senior Secured Notes, due 2018 [Member]	Jul. 02, 2013 Senior Secured Notes, due 2018 [Member]	May 09, 2014 Subordinated Debt [Member]	Mar. 08, 2013 Subordinated Debt [Member]	Feb. 28, 2014 Subordinated Debt [Member]	Sep. 30, 2014 Subordinated Debt [Member]	Mar. 31, 2014 Subordinated Debt [Member]	Dec. 31, 2013 Subordinated Debt [Member]	Sep. 30, 2013 Subordinated Debt [Member]	May 09, 2014 Subordinated Debt [Member]	Feb. 21, 2014 Subordinated Debt [Member]	Jan. 22, 2014 Subordinated Debt [Member]	Oct. 18, 2013 Subordinated Debt [Member]	Aug. 01, 2013 Subordinated Debt [Member]	Mar. 08, 2013 Subordinated Debt [Member]	Mar. 10, 2010 Subordinated Debt [Member]	Jul. 31, 2013 Term Loan [Member]	Apr. 30, 2013 Term Loan [Member]	Sep. 30, 2013 Term Loan [Member]	Sep. 30, 2014 Term Loan [Member]	Dec. 31, 2013 Term Loan [Member]	Apr. 29, 2013 Term Loan [Member]	Sep. 30, 2014 Senior notes due 2019 [Member]	Sep. 30, 2014 Senior notes due 2019 [Member]	Aug. 05, 2014 Senior notes due 2019 [Member]	Mar. 20, 2014 Senior notes due 2019 [Member]	Dec. 31, 2013 Senior notes due 2019 [Member]	Sep. 30, 2014 LIBOR [Member] Minimum [Member] Term Loan [Member]	Sep. 30, 2014 LIBOR [Member] Maximum [Member] Term Loan [Member]	Nov. 12, 2014 Subsequent Event [Member]	Dec. 31, 2014 Subsequent Event [Member]	Nov. 06, 2014 Subsequent Event [Member]	Dec. 31, 2014 Cap agreement effective January 14, 2015-2017 [Member] Subsequent Event [Member]	Sep. 30, 2014 Interest rate cap purchased during 2014 [Member]	Dec. 31, 2014 Interest rate cap purchased during 2014 [Member] Subsequent Event [Member]
Subsequent Event [Line Items]
Derivative, Notional Amount																																									$ 300,000,000	$ 250,000,000
Derivative Asset entered into during fourth quarter 2014, noncurrent			700,000	0																																			600,000
Interest Rate Cap, cap rate																																										2.00%	2.00%
Cash dividends declared per common share																																							$ 0.0675
Proceeds from Issuance of Debt																									190,000,000
Debt Instrument, Repurchased Face Amount								325,000,000		175,000,000					50,000,000			42,500,000	20,000,000	30,000,000	155,000,000	324,000,000	50,000,000	28,500,000									234,700,000	25,000,000
Redemption Premium, percentage of par value								0.00%		108.00%								104.178%	104.178%		104.178%	106.268%	106.268%										108.80%	109.75%
Extinguishment of Debt, Accrued Interest Paid to Lenders										700,000								400,000	1,900,000		200,000	12,000,000	2,500,000											1,000,000
Proceeds from Issuance of Long-term Debt			600,000,000	1,535,200,000																						1,350,000,000
Debt, short-term and long-term					600,000,000	0			325,000,000					0		92,500,000												1,517,400,000	1,528,900,000		1,045,300,000	1,045,300,000			1,305,000,000
Long-term Debt, stated interest rate						8.00%								12.535%																	8.50%	8.50%
Discount, percent of par																									99.25%					99.75%
Variable Interest Rate Margin																																				2.25%	2.50%
Quarterly amortization payment of original principal, Percent																												0.25%
Net loss on extinguishments of long-term debt	45,800,000	41,300,000	53,800,000	55,500,000		(23,700,000)	16,700,000					3,900,000		(2,200,000)	2,700,000	8,500,000	24,600,000										10,300,000				(22,100,000)	(2,700,000)
Extinguishment of Debt, Fees Paid to Lenders						13,000,000	14,000,000				1,800,000	3,100,000			2,100,000	6,500,000	20,300,000														10,000,000	2,400,000
Write off of Deferred Debt Issuance Cost						4,000,000	2,700,000					800,000	600,000	400,000		2,000,000	4,300,000														2,200,000	300,000
Debt Instrument, Repurchase Amount																																	234,700,000
Stock Repurchase Program, Number of Shares Authorized to be Repurchased																																								$ 500,000,000
Stock Repurchased During Period, Shares																																						0
Equity Method Investment, Ownership Percentage																																								35.00%