FAIR VALUE MEASUREMENTS - Company's hierarchy for its assets and liabilities measured at fair value on a recurring basis (Details) - USD ($) $ in Millions	Oct. 28, 2016	Jan. 29, 2016
Assets:
Derivative instruments	$ 204	$ 195
Liabilities:
Derivative instruments	18	12
Fair Value, Measurements, Recurring
Assets:
Derivative instruments	204	195
Common stock purchase agreement	0	10
Total assets	10,131	4,037
Liabilities:
Derivative instruments	18	12
Debt - Other	0	28
Total liabilities	18	40
Fair Value, Measurements, Recurring \| Money market funds
Assets:
Cash equivalents:	4,222	3,832
Fair Value, Measurements, Recurring \| Municipal obligations
Assets:
Cash equivalents:	15	0
Fair Value, Measurements, Recurring \| Level 1
Assets:
Derivative instruments	0	0
Common stock purchase agreement	0	0
Total assets	4,859	3,832
Liabilities:
Derivative instruments	0	0
Debt - Other	0	0
Total liabilities	0	0
Fair Value, Measurements, Recurring \| Level 1 \| Money market funds
Assets:
Cash equivalents:	4,222	3,832
Fair Value, Measurements, Recurring \| Level 1 \| Municipal obligations
Assets:
Cash equivalents:	0	0
Fair Value, Measurements, Recurring \| Level 2
Assets:
Derivative instruments	204	195
Common stock purchase agreement	0	0
Total assets	5,272	195
Liabilities:
Derivative instruments	18	12
Debt - Other	0	0
Total liabilities	18	12
Fair Value, Measurements, Recurring \| Level 2 \| Money market funds
Assets:
Cash equivalents:	0	0
Fair Value, Measurements, Recurring \| Level 2 \| Municipal obligations
Assets:
Cash equivalents:	15	0
Fair Value, Measurements, Recurring \| Level 3
Assets:
Derivative instruments	0	0
Common stock purchase agreement	0	10
Total assets	0	10
Liabilities:
Derivative instruments	0	0
Debt - Other	0	28
Total liabilities	0	28
Fair Value, Measurements, Recurring \| Level 3 \| Money market funds
Assets:
Cash equivalents:	0	0
Fair Value, Measurements, Recurring \| Level 3 \| Municipal obligations
Assets:
Cash equivalents:	0	0
U.S. government and agencies \| Fair Value, Measurements, Recurring
Assets:
Investments	999	0
U.S. government and agencies \| Fair Value, Measurements, Recurring \| Level 1
Assets:
Investments	479	0
U.S. government and agencies \| Fair Value, Measurements, Recurring \| Level 2
Assets:
Investments	520	0
U.S. government and agencies \| Fair Value, Measurements, Recurring \| Level 3
Assets:
Investments	0	0
U.S. corporate debt securities \| Fair Value, Measurements, Recurring
Assets:
Investments	1,946	0
U.S. corporate debt securities \| Fair Value, Measurements, Recurring \| Level 1
Assets:
Investments	0	0
U.S. corporate debt securities \| Fair Value, Measurements, Recurring \| Level 2
Assets:
Investments	1,946	0
U.S. corporate debt securities \| Fair Value, Measurements, Recurring \| Level 3
Assets:
Investments	0	0
Foreign debt securities \| Fair Value, Measurements, Recurring
Assets:
Investments	2,201	0
Foreign debt securities \| Fair Value, Measurements, Recurring \| Level 1
Assets:
Investments	0	0
Foreign debt securities \| Fair Value, Measurements, Recurring \| Level 2
Assets:
Investments	2,201	0
Foreign debt securities \| Fair Value, Measurements, Recurring \| Level 3
Assets:
Investments	0	0
Municipal obligations \| Fair Value, Measurements, Recurring
Assets:
Investments	382	0
Municipal obligations \| Fair Value, Measurements, Recurring \| Level 1
Assets:
Investments	0	0
Municipal obligations \| Fair Value, Measurements, Recurring \| Level 2
Assets:
Investments	382	0
Municipal obligations \| Fair Value, Measurements, Recurring \| Level 3
Assets:
Investments	0	0
Asset-backed securities \| Fair Value, Measurements, Recurring
Assets:
Investments	4	0
Asset-backed securities \| Fair Value, Measurements, Recurring \| Level 1
Assets:
Investments	0	0
Asset-backed securities \| Fair Value, Measurements, Recurring \| Level 2
Assets:
Investments	4	0
Asset-backed securities \| Fair Value, Measurements, Recurring \| Level 3
Assets:
Investments	0	0
Equity and other securities \| Fair Value, Measurements, Recurring
Assets:
Investments	158	0
Equity and other securities \| Fair Value, Measurements, Recurring \| Level 1
Assets:
Investments	158	0
Equity and other securities \| Fair Value, Measurements, Recurring \| Level 2
Assets:
Investments	0	0
Equity and other securities \| Fair Value, Measurements, Recurring \| Level 3
Assets:
Investments	$ 0	$ 0

Private Placement Agreement Asset, Fair Value Disclosure

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
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- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
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Fair value, after the effects of master netting arrangements, of a financial asset or other 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. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References

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-Publisher FASB
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- Definition

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. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

+ References

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- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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Fair value of financial and nonfinancial obligations.

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date.

+ References

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