Subsequent Event Senior Secured Second Lien Notes (Details) (Subsequent Event [Member], Senior Secured Notes [Member], Senior Secured Second Lien Notes due 2021 [Member], USD $)	0 Months Ended
	Aug. 01, 2013
Subsequent Event [Line Items]
Debt Instrument, Face Amount	$ 735,000,000
Debt Instrument,Percentage of Face Value	98.00%
Proceeds from Issuance of Senior Long-term Debt	$ 720,300,000
Interest rate, stated percentage	9.875%
Redemption price, percentage	101.00%
Maximum [Member]
Subsequent Event [Line Items]
Debt Instrument, Additional Special Interest, Annual Rate Increase, Per Year	1.00%