Net Benefit Expense (Income) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 13	$ 12	$ 13
Interest cost	28	32	33
Expected return on plan assets	(40)	(40)	(40)
Amortization of net loss (gain)	17	15	17
Net benefit expense (income)	18	19	23
Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Interest cost		1
Amortization of prior service cost		(1)
Amortization of net loss (gain)	(4)	(5)	(6)
Net benefit expense (income)	$ (4)	$ (5)	$ (6)