Long-Term Debt - Long-Term Debt and Capital Lease Obligations (Detail) - USD ($) $ in Millions	Jun. 20, 2015	Feb. 28, 2015
Debt Instrument [Line Items]
Long-Term Debentures and Notes due	$ 2,200	$ 2,480
Net discount on debt, using an effective interest rate of 4.63% to 8.58%	(8)	(8)
Total debt	2,479	2,489
Less current maturities of long-term debt	(279)	(9)
4.50% Secured Term Loan Facility due March 2019 [Member]
Debt Instrument [Line Items]
Long-Term Debentures and Notes due	1,459	1,469
1.66% to 4.00% Revolving ABL Credit Facility due February 2019 [Member]
Debt Instrument [Line Items]
Long-Term Debentures and Notes due	0	0
8.00% Senior Notes due May 2016 [Member]
Debt Instrument [Line Items]
Long-Term Debentures and Notes due	278	278
6.75% Senior Notes due June 2021 [Member]
Debt Instrument [Line Items]
Long-Term Debentures and Notes due	400	400
7.75% Senior Notes Due November 2022 [Member]
Debt Instrument [Line Items]
Long-Term Debentures and Notes due	$ 350	$ 350