Transactions - Additional Information (Detail) (USD $)	1 Months Ended	5 Months Ended
	Mar. 07, 2011	Jul. 30, 2011
Debt Instrument [Line Items]
Proceeds from long-term debt		$ 1,600,000,000
Proceed from equity investments from parent funded by sponsors	1,225,911,000
Line of credit facility, borrowing capacity terminated	200,000,000
Notes
Debt Instrument [Line Items]
Proceeds from long-term debt	400,000,000
Debt, interest rate	8.125%
Debt, maturity year	2019
ABL Facility
Debt Instrument [Line Items]
Line of credit facility, borrowing capacity	250,000,000
Debt, maturity period	5 years
Term Loan
Debt Instrument [Line Items]
Debt, maturity period	7 years
Proceeds from long-term debt	1,200,000,000
Senior Credit Facilities
Debt Instrument [Line Items]
Line of credit facility, borrowing capacity	$ 1,450,000,000