Retirement Plans (Reconciliation Of Benefit Obligations, Plan Assets, And Funded Status Of The Pension Plan) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012
Supplementary Retirement Plan [Member]
Funded status at end of year	$ (795)	$ (771)
Accounts payable and accrued liabilities	(58)	(55)
Other liabilities	(737)	(716)
Net actuarial loss	212	195
Prior service credit	0	(1)
Total included in accumulated other comprehensive income	212	194
Pension Plan [Member]
Company contributions	150	375
Funded status at end of year	(168)	(389)
Other liabilities	(168)	(389)
Net actuarial loss	1,326	1,558
Prior service credit	0	(1)
Total included in accumulated other comprehensive income	1,326	1,557
Change in projected benefit obligation [Member] | Supplementary Retirement Plan [Member]
Projected benefit obligation, beginning of year	771	688
Service cost	6	6
Interest cost	35	36
Actuarial loss	76	90
Benefits paid	(51)	(49)
Actuarial gain due to curtailment	(42)	0
Projected benefit obligation, end of year	795	771
Change in projected benefit obligation [Member] | Pension Plan [Member]
Projected benefit obligation, beginning of year	3,458	3,024
Service cost	117	102
Interest cost	157	160
Actuarial loss	283	375
Benefits paid	(206)	(203)
Actuarial gain due to curtailment	(254)	0
Projected benefit obligation, end of year	3,555	3,458
Fair value of plan assets [Member] | Supplementary Retirement Plan [Member]
Benefits paid	(51)	(49)
Fair value of plan assets, beginning of year	0	0
Company contributions	51	49
Fair value of plan assets, end of year	0	0
Fair value of plan assets [Member] | Pension Plan [Member]
Benefits paid	(206)	(203)
Fair value of plan assets, beginning of year	3,069	2,804
Actual return on plan assets	374	93
Company contributions	150	375
Fair value of plan assets, end of year	$ 3,387	$ 3,069