Retirement Plans (Net Periodic Benefit Cost) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012 Pension Plan [Member]	Jan. 29, 2011 Pension Plan [Member]	Jan. 30, 2010 Pension Plan [Member]	Jan. 28, 2012 Pension Plan [Member] Other Comprehensive Income [Member]	Jan. 29, 2011 Pension Plan [Member] Other Comprehensive Income [Member]	Jan. 30, 2010 Pension Plan [Member] Other Comprehensive Income [Member]	Jan. 28, 2012 Pension Plan [Member] Net Periodic Pension Cost [Member]	Jan. 29, 2011 Pension Plan [Member] Net Periodic Pension Cost [Member]	Jan. 30, 2010 Pension Plan [Member] Net Periodic Pension Cost [Member]
Service cost								$ 102	$ 99	$ 81
Interest cost								160	158	173
Expected return on assets								(248)	(218)	(187)
Net actuarial (gain) loss					530	(9)	311
Amortization of net actuarial (gain) loss	3	139			(88)	(61)	0	88	61	0
Amortization of prior service credit					1	1	1	(1)	(1)	(1)
Total net periodic benefit cost								101	99	66
Total recognized in other comprehensive income					443	(69)	312
Total recognized in net periodic benefit cost and other comprehensive income		$ 544	$ 30	$ 378