Taxes (Tax Effects That Give Rise To Significant Portions Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Millions	Feb. 03, 2018	Jan. 28, 2017
Deferred tax assets:
Post employment and postretirement benefits	$ 188	$ 405
Accrued liabilities accounted for on a cash basis for tax purposes	218	379
Long-term debt	25	63
Unrecognized state tax benefits and accrued interest	39	76
State operating loss and credit carryforwards	101	79
Other	165	347
Valuation allowance	(65)	(36)
Total deferred tax assets	671	1,313
Deferred tax liabilities:
Excess of book basis over tax basis of property and equipment	(923)	(1,381)
Merchandise inventories	(389)	(604)
Intangible assets	(276)	(380)
Other	(205)	(391)
Total deferred tax liabilities	(1,793)	(2,756)
Net deferred tax liability	$ (1,122)	$ (1,443)