Pension, Postretirement Health Care and Other Benefits (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	May 04, 2013	Apr. 28, 2012
Pension Benefits
Net Pension and Postretirement Health Care Benefits Expense
Service cost benefits earned during the period	$ 30	$ 30
Interest cost on projected benefit obligation	35	36
Expected return on assets	(59)	(55)
Amortization of losses	25	25
Amortization of prior service cost	(3)
Total Net Pension and Postretirement Health Care Benefits Expense	28	36
Postretirement Health Care Benefits
Net Pension and Postretirement Health Care Benefits Expense
Service cost benefits earned during the period	2	2
Interest cost on projected benefit obligation		2
Amortization of losses	1	1
Amortization of prior service cost	(4)	(3)
Total Net Pension and Postretirement Health Care Benefits Expense	$ (1)	$ 2