Cash, Cash Equivalents and Current Marketable Securities - Cash and Cash Equivalent Composition (Details) - USD ($) $ in Millions	Dec. 29, 2019	Dec. 30, 2018
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Cash & Cash Equivalents	$ 17,305	$ 18,107
Current Marketable Securities	1,982	1,580
Held-to-maturity Securities
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, held-to-maturity	14,919	9,953
Cash & Cash Equivalents	14,195	9,953
Current Marketable Securities	724	0
Held-to-maturity Securities \| Cash
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, held-to-maturity	2,637	2,619
Cash & Cash Equivalents	2,637	2,619
Current Marketable Securities	0	0
Held-to-maturity Securities \| Other Sovereign Securities(1)
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, held-to-maturity	439
Cash & Cash Equivalents	149
Current Marketable Securities	290
Held-to-maturity Securities \| U.S. Reverse repurchase agreements
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, held-to-maturity	6,375	3,009
Cash & Cash Equivalents	6,375	3,009
Current Marketable Securities	0	0
Held-to-maturity Securities \| Other Reverse repurchase agreements
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, held-to-maturity	375	443
Cash & Cash Equivalents	375	443
Current Marketable Securities	0	0
Held-to-maturity Securities \| Corporate debt securities(1)
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, held-to-maturity	1,323
Cash & Cash Equivalents	889
Current Marketable Securities	434
Held-to-maturity Securities \| Money market funds
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, held-to-maturity	2,864	3,397
Cash & Cash Equivalents	2,864	3,397
Current Marketable Securities	0	0
Held-to-maturity Securities \| Time deposits(1)
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, held-to-maturity	906	485
Cash & Cash Equivalents	906	485
Current Marketable Securities	0	0
Available-for-sale Securities
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, available-for-sale	4,368	9,734
Cash & Cash Equivalents	3,110	8,154
Current Marketable Securities	1,258	1,580
Available-for-sale Securities \| U.S. Gov't Securities
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, available-for-sale	4,102	9,474
Cash & Cash Equivalents	3,095	8,144
Current Marketable Securities	1,007	1,330
Available-for-sale Securities \| Corporate debt securities(1)
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, available-for-sale	266	260
Cash & Cash Equivalents	15	10
Current Marketable Securities	$ 251	$ 250

Amortized cost 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 320
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-Section 50
-Paragraph 2
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Amount 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. Excludes cash and cash equivalents within disposal group and discontinued operation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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No definition available.

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Amount of investment in debt security measured at amortized cost (held-to-maturity).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
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Amount of investment in marketable security, classified as current.

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