Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Nov. 01, 2014	Nov. 02, 2013	Nov. 01, 2014	Nov. 02, 2013
Net income (loss)	$ 217	$ 177	$ 733	$ 675
Other comprehensive income (loss), before tax:
Amortization of net actuarial loss on post employment and postretirement benefit plans, before tax	5	38	18	117
Tax effect related to items of other comprehensive income	(2)	(14)	(7)	(45)
Total other comprehensive income, net of tax effect	3	24	11	72
Comprehensive income (loss)	$ 220	$ 201	$ 744	$ 747