Long-Term Debt - Schedule of Long-Term Debt (Parenthetical) (Detail) - Jun. 30, 2015	Total
Debt Instrument [Line Items]
Total debt average term	6 years 3 months 18 days
Total debt average rate	5.40%
Senior Secured Asset-Based Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Effective interest rate	1.40%
Senior Secured Term Loan Facilities [Member]
Debt Instrument [Line Items]
Effective interest rate	4.90%
Senior Secured First Lien Notes [Member]
Debt Instrument [Line Items]
Effective interest rate	5.50%
Other Senior Secured Debt [Member]
Debt Instrument [Line Items]
Effective interest rate	6.00%
Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Effective interest rate	6.60%