Long-Term Debt (Details)	3 Months Ended
May 03, 2019 USD ($)
Long-Term Debt
Unsecured notes, issued	$ 3,000,000,000.0
Unsecured Notes, 3.650%
Long-Term Debt
Unsecured notes, issued	$ 1,500,000,000
Unsecured notes, maturity date	Apr. 05, 2029
Unsecured notes, interest rate	3.65%
Unamortized discount	$ 9,000,000
Unsecured Notes, 4.550%
Long-Term Debt
Unsecured notes, issued	$ 1,500,000,000
Unsecured notes, maturity date	Apr. 05, 2049
Unsecured notes, interest rate	4.55%
Unamortized discount	$ 19,000,000

Face (par) amount of debt instrument at time of issuance.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Balance Type:	na
Period Type:	instant

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-Subparagraph (SX 210.5-02.22(a)(2))
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount, after accumulated amortization, of debt discount.

+ References

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- References

No definition available.

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