Subsequent Events - New Senior Notes Redemption Price Percentage (Detail) (Subsequent Event)	1 Months Ended
	Apr. 09, 2014
New Senior Secured Notes | 2017
Debt Instrument Redemption [Line Items]
Redemption price percentage	104.219%
New Senior Secured Notes | 2018
Debt Instrument Redemption [Line Items]
Redemption price percentage	102.813%
New Senior Secured Notes | 2019
Debt Instrument Redemption [Line Items]
Redemption price percentage	101.406%
New Senior Secured Notes | 2020 and thereafter
Debt Instrument Redemption [Line Items]
Redemption price percentage	100.00%
New Unsecured Notes | 2017
Debt Instrument Redemption [Line Items]
Redemption price percentage	105.063%
New Unsecured Notes | 2018
Debt Instrument Redemption [Line Items]
Redemption price percentage	103.375%
New Unsecured Notes | 2019
Debt Instrument Redemption [Line Items]
Redemption price percentage	101.688%
New Unsecured Notes | 2020 and thereafter
Debt Instrument Redemption [Line Items]
Redemption price percentage	100.00%