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Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 02, 2020	Feb. 03, 2019	Jan. 28, 2018	Feb. 04, 2019
Accounting Policies [Line Items]
Fiscal year, period	53 weeks	52 weeks	52 weeks
Investments classified as cash equivalents, original maturity	3 months
Percentage of merchandise inventories that are calculated using a cost method	29.00%
Self insurance reserve	$ 1,300	$ 1,300
Recognized income tax positions are measured at the largest amount exceeding a probability of	50.00%
Quantitative goodwill impairment assessment time interval	3 years
Operating lease, right-of-use asset	$ 5,595	0		$ 5,700
Operating lease, liability	$ 5,894			6,000
Impairment of Intangible Assets (Excluding Goodwill)		$ 247
Maximum | Other Intangible Assets
Accounting Policies [Line Items]
Intangible asset, useful life	12 years
Software and Software Development Costs | Minimum
Accounting Policies [Line Items]
Software, useful life	3 years
Software and Software Development Costs | Maximum
Accounting Policies [Line Items]
Software, useful life	6 years
Accounting standards update 2018-02 | Retained Earnings
Accounting Policies [Line Items]
Cumulative effect of accounting changes				31
Accounting standards update 2018-02 | Accumulated other comprehensive income loss
Accounting Policies [Line Items]
Cumulative effect of accounting changes				$ 31

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Accounting Policies [Line Items]

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Maturity for which investment is considered cash equivalent.

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The percentage of inventories calculated using a cost method.

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Quantitative Goodwill Impairment Assessment Time Interval

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.

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Amount of cumulative effect of the change in accounting principle or new accounting pronouncement on retained earnings or other components of equity or net assets in the statement of financial position as of the beginning of the earliest period presented.

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Present value of lessee's discounted obligation for lease payments from operating lease.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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