Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

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Debt (Short-term Commercial Paper Programs and Line of Credit Facility) (Details) - USD ($) $ in Millions	12 Months Ended
	Feb. 03, 2019	Jan. 28, 2018	Dec. 08, 2017	Dec. 07, 2017
Short-term Line of Credit and Commercial Paper Programs [Abstract]
Short-term debt	$ 1,339	$ 1,559
Commercial Paper [Member]
Short-term Line of Credit and Commercial Paper Programs [Abstract]
Maximum borrowing capacity of credit facility	$ 3,000
Weighted average interest rate	2.41%	1.45%
Maximum amount outstanding at any month-end	$ 2,264	$ 1,559
Average daily short-term borrowings	621	$ 173
Revolving Credit Facility [Member]
Short-term Line of Credit and Commercial Paper Programs [Abstract]
Maximum borrowing capacity of credit facility	3,000
Revolving Credit Facility [Member] \| 5-year Back-up Credit Facility [Member]
Short-term Line of Credit and Commercial Paper Programs [Abstract]
Maximum borrowing capacity of credit facility	$ 2,000		$ 2,000	$ 2,000
Expiration date of credit facility	Dec. 08, 2022
Revolving Credit Facility [Member] \| 364-day Back-up Credit Facility [Member]
Short-term Line of Credit and Commercial Paper Programs [Abstract]
Maximum borrowing capacity of credit facility	$ 1,000