Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Millions		3 Months Ended
	Feb. 03, 2019	May 04, 2019
Significant Accounting Policies [Line Items]
Cumulative effect of the adoption new ASUs		$ 26
Operating Lease, Liability		3,303
Operating Lease, Right-of-Use Asset		$ 3,025
Accounting Standards Update 2016-02 [Member]
Significant Accounting Policies [Line Items]
Cumulative effect of the adoption new ASUs	$ 26
Operating Lease, Impairment Loss	29
Restatement Adjustment [Member] | Accounting Standards Update 2016-02 [Member]
Significant Accounting Policies [Line Items]
Operating Lease, Liability	3,422
Operating Lease, Right-of-Use Asset	$ 3,148