Subsequent Event - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	9 Months Ended				9 Months Ended		9 Months Ended	1 Months Ended	3 Months Ended
	Oct. 28, 2012		Jan. 29, 2012		Oct. 28, 2012 13.5% Senior Subordinated Notes due 2015	Jan. 29, 2012 13.5% Senior Subordinated Notes due 2015	Oct. 28, 2012 Refinancing of Debt	Nov. 30, 2012 Repayment of Debt Refinancing of Debt 13.5% Senior Subordinated Notes due 2015	Feb. 03, 2013 Repayment of Debt Refinancing of Debt 13.5% Senior Subordinated Notes due 2015	Nov. 08, 2012 Repayment of Debt Refinancing of Debt 13.5% Senior Subordinated Notes due 2015	Nov. 08, 2012 Repayment of Debt Refinancing of Debt 13.5% Senior Subordinated Notes due 2015 Affiliated Entity
Subsequent Event [Line Items]
Credit facility, extinguished					$ 930			$ 930
Note redemption, price										103.375%
Loss on extinguishment of debt	(220)						220		37
Note redemption, premium payment	31								31
Note redemption, write-off of unamortized deferred debt costs							46		5
Long Term Debt	6,915	[1]	5,462	[1]	1,819	1,820				889
Accrued interest on redeemed note	23									23
Aggregate principal amount					$ 1						$ 348
Percentage of aggregate principal amount											39.00%

[1] These amounts do not include accrued interest; accrued interest is classified as Other current liabilities and Other liabilities in the accompanying Consolidated Balance Sheets. These amounts do include any related discounts and premiums.