Long-Term Debt - Schedule of Long-Term Debt (Parenthetical) (Detail)	Sep. 30, 2013
Debt Instrument [Line Items]
Total debt average term	6 years 6 months
Total debt average rate	6.30%
Senior Secured Asset-Based Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Effective interest rate	1.70%
Senior Secured Term Loan Facilities [Member]
Debt Instrument [Line Items]
Effective interest rate	5.10%
Senior Secured First Lien Notes [Member]
Debt Instrument [Line Items]
Effective interest rate	7.10%
Other Senior Secured Debt [Member]
Debt Instrument [Line Items]
Effective interest rate	6.80%
Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Effective interest rate	7.20%