Retirement Plans (Summary Of Changes In Fair Value Of Pension Plan Level 3 Assets) (Details) (Pension Plan [Member], Significant Unobservable Inputs (Level 3) [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Feb. 02, 2013	Jan. 28, 2012
Pension Plan [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value of plan assets, beginning of year	$ 533	$ 488
Actual gain (loss) on plan assets:
Relating to assets still held at the reporting date	7	9
Relating to assets sold during the period	23	22
Purchases	71	48
Sales	(40)	(34)
Fair value of plan assets, end of year	$ 594	$ 533