Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
Apr. 29, 2016	May. 01, 2015
Basic earnings per common share:
Net earnings	$ 884	$ 673
Less: Net earnings allocable to participating securities	(4)	(3)
Net earnings allocable to common shares, basic	$ 880	$ 670
Weighted-average common shares outstanding	897	950
Basic earnings per common share	$ 0.98	$ 0.70
Diluted earnings per common share:
Net earnings	$ 884	$ 673
Less: Net earnings allocable to participating securities	(4)	(3)
Net earnings allocable to common shares, diluted	$ 880	$ 670
Weighted-average common shares outstanding	897	950
Dilutive effect of non-participating share-based awards	2	2
Weighted-average common shares, as adjusted	899	952
Diluted earnings per common share	$ 0.98	$ 0.70

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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Amount of earnings (loss) distributed and earnings (loss) allocated to participating securities for the diluted earnings (loss) per share or per unit calculation under the two-class method.

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