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Summary of Significant Accounting Policies (Recently Adopted Accounting Pronouncements) (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Feb. 03, 2019	Oct. 28, 2018	Jul. 29, 2018	Apr. 29, 2018	Jan. 28, 2018	Oct. 29, 2017	Jul. 30, 2017	Apr. 30, 2017	Feb. 03, 2019	Jan. 28, 2018	Jan. 29, 2017	Jan. 29, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred Revenue, Current	$ 1,782				$ 1,805				$ 1,782	$ 1,805
Other long-term liabilities	1,867				2,174				1,867	2,174
Accounts Receivable, Net, Current	1,936				1,952				1,936	1,952
Net Sales	26,491	$ 26,302	$ 30,463	$ 24,947	23,883	$ 25,026	$ 28,108	$ 23,887	108,203	100,904	$ 94,595
Cost of sales									71,043	66,548	62,282
Gross Profit	9,027	$ 9,151	$ 10,365	$ 8,617	8,093	$ 8,648	$ 9,461	$ 8,154	37,160	34,356	32,313
Selling, general and administrative									19,513	17,864	17,132
Other Assets, Current	890				638				890	638
Other accrued expenses	2,611				2,170				2,611	2,170
Cumulative Effect of Accounting Change					$ 0					$ 0	$ 0
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] \| Accounting Standards Update 2014-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred Revenue, Current												$ 99
Other long-term liabilities												24
Accounts Receivable, Net, Current	(40)								(40)
Net Sales									216
Cost of sales									(382)
Gross Profit									598
Selling, general and administrative									598
Other Assets, Current	256								256
Other accrued expenses	216								216
Calculated under Revenue Guidance in Effect before Topic 606 [Member] \| Accounting Standards Update 2014-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accounts Receivable, Net, Current	1,976								1,976
Net Sales									107,987
Cost of sales									71,425
Gross Profit									36,562
Selling, general and administrative									18,915
Other Assets, Current	634								634
Other accrued expenses	$ 2,395								$ 2,395
Retained Earnings [Member] \| Accounting Standards Update 2014-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect of Accounting Change												$ 75