Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (Details) - Fair Value, Measurements, Recurring - Estimate of Fair Value - USD ($) $ in Millions	May 01, 2020	Jan. 31, 2020	May 03, 2019
Short-term Investments
Assets, Fair Value Disclosure
Investments	$ 201	$ 160	$ 190
Short-term Investments \| U.S. Treasury securities \| Fair Value (Level 1)
Assets, Fair Value Disclosure
Investments	133	13	0
Short-term Investments \| Money market funds \| Fair Value (Level 1)
Assets, Fair Value Disclosure
Investments	33	105	156
Short-term Investments \| Corporate debt securities \| Fair Value (Level 2)
Assets, Fair Value Disclosure
Investments	28	23	12
Short-term Investments \| Agency securities \| Fair Value (Level 2)
Assets, Fair Value Disclosure
Investments	7	19	22
Long-term Investments
Assets, Fair Value Disclosure
Investments	300	372	235
Long-term Investments \| U.S. Treasury securities \| Fair Value (Level 1)
Assets, Fair Value Disclosure
Investments	214	280	26
Long-term Investments \| Corporate debt securities \| Fair Value (Level 2)
Assets, Fair Value Disclosure
Investments	56	62	181
Long-term Investments \| Agency securities \| Fair Value (Level 2)
Assets, Fair Value Disclosure
Investments	30	30	28
Other current liabilities
Liabilities, Fair Value Disclosure
Other current liabilities	15	11	0
Other current liabilities \| Forward interest rate swaps \| Fair Value (Level 2)
Liabilities, Fair Value Disclosure
Other current liabilities	15	11	0
Other noncurrent liabilities
Liabilities, Fair Value Disclosure
Total other liabilities	17	0	0
Other noncurrent liabilities \| Forward interest rate swaps \| Fair Value (Level 2)
Liabilities, Fair Value Disclosure
Other liabilities	$ 17	$ 0	$ 0

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118942338&loc=SL82898722-210454

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118954083&loc=d3e26610-111562

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-URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 210
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Fair value portion of other liabilities.

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