Long-Term Debt - Schedule of Long-Term Debt (Parenthetical) (Detail)	Dec. 31, 2012
Debt Instrument [Line Items]
Total debt average term	7 years 1 month 6 days
Total debt average rate	6.60%
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	5.60%
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	7.00%
Senior secured second lien notes [Member]
Debt Instrument [Line Items]
Effective interest rate	11.00%
Senior unsecured notes [Member]
Debt Instrument [Line Items]
Effective interest rate	7.10%