Retirement Plans (Net Periodic Benefit Cost) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011
Supplementary Retirement Plan [Member]
Amortization of net actuarial (gain) loss	$ 19
Total recognized in net periodic benefit cost and other comprehensive income	75	132	65
Supplementary Retirement Plan [Member] | Other Comprehensive Income [Member]
Net actuarial (gain) loss	34	90	22
Amortization of net actuarial (gain) loss	(17)	(8)	(3)
Amortization of prior service credit	1	1	1
Total recognized in other comprehensive income	18	83	20
Supplementary Retirement Plan [Member] | Net Periodic Pension Cost [Member]
Service cost	6	6	6
Interest cost	35	36	37
Amortization of net actuarial (gain) loss	17	8	3
Amortization of prior service credit	(1)	(1)	(1)
Total net periodic benefit cost	57	49	45
Pension Plan [Member]
Amortization of net actuarial (gain) loss	142
Total recognized in net periodic benefit cost and other comprehensive income	(70)	544	30
Pension Plan [Member] | Other Comprehensive Income [Member]
Net actuarial (gain) loss	(91)	530	(9)
Amortization of net actuarial (gain) loss	(141)	(88)	(61)
Amortization of prior service credit	1	1	1
Total recognized in other comprehensive income	(231)	443	(69)
Pension Plan [Member] | Net Periodic Pension Cost [Member]
Service cost	117	102	99
Interest cost	157	160	158
Expected return on assets	(253)	(248)	(218)
Amortization of net actuarial (gain) loss	141	88	61
Amortization of prior service credit	(1)	(1)	(1)
Total net periodic benefit cost	$ 161	$ 101	$ 99