Cash, Cash Equivalents and Current Marketable Securities - Cash and Cash Equivalent Composition (Details) - USD ($) $ in Millions	Jan. 02, 2022	Jan. 03, 2021
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Fair value, available-for-sale	$ 19,727	$ 14,042
Cash & Cash Equivalents	14,487	13,985
Current Marketable Securities	17,121	11,200
Held-to-maturity Securities
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, held-to-maturity	11,881	11,143
Fair value, held-to-maturity	11,880	11,143
Cash & Cash Equivalents	7,686	9,230
Current Marketable Securities	4,195	1,913
Held-to-maturity, unrecognized loss	(1)
Held-to-maturity, unrecognized gain		0
Held-to-maturity Securities \| Cash
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, held-to-maturity	2,936	2,863
Fair value, held-to-maturity	2,936	2,863
Cash & Cash Equivalents	2,936	2,863
Current Marketable Securities	0	0
Held-to-maturity, unrecognized loss	0
Held-to-maturity, unrecognized gain		0
Held-to-maturity Securities \| Non-U.S. Sovereign Securities
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, held-to-maturity	1,006	690
Fair value, held-to-maturity	1,006	690
Cash & Cash Equivalents	90	0
Current Marketable Securities	916	690
Held-to-maturity, unrecognized loss	0
Held-to-maturity, unrecognized gain		0
Held-to-maturity Securities \| U.S. Reverse repurchase agreements
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, held-to-maturity	1,659	1,937
Fair value, held-to-maturity	1,659	1,937
Cash & Cash Equivalents	1,659	1,937
Current Marketable Securities	0	0
Held-to-maturity, unrecognized loss	0
Held-to-maturity, unrecognized gain		0
Held-to-maturity Securities \| Corporate debt securities
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, held-to-maturity	3,479	2,674
Fair value, held-to-maturity	3,478	2,674
Cash & Cash Equivalents	200	1,451
Current Marketable Securities	3,279	1,223
Held-to-maturity, unrecognized loss	(1)
Held-to-maturity, unrecognized gain		0
Held-to-maturity Securities \| Money market funds
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, held-to-maturity	1,901	2,102
Fair value, held-to-maturity	1,901	2,102
Cash & Cash Equivalents	1,901	2,102
Current Marketable Securities	0	0
Held-to-maturity, unrecognized loss	0
Held-to-maturity, unrecognized gain		0
Held-to-maturity Securities \| Time deposits
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, held-to-maturity	900	877
Fair value, held-to-maturity	900	877
Cash & Cash Equivalents	900	877
Current Marketable Securities	0	0
Held-to-maturity, unrecognized loss	0
Held-to-maturity, unrecognized gain		0
Available-for-sale Securities
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, available-for-sale	19,731	14,041
Fair value, available-for-sale	19,727	14,042
Cash & Cash Equivalents	6,801	4,755
Current Marketable Securities	12,926	9,287
Available-for-sale, unrecognized loss	(4)
Available-for-sale, unrecognized gain		1
Available-for-sale Securities \| Corporate debt securities
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, available-for-sale	245	250
Fair value, available-for-sale	245	250
Cash & Cash Equivalents	15	24
Current Marketable Securities	230	226
Available-for-sale, unrecognized loss	0
Available-for-sale, unrecognized gain		0
Available-for-sale Securities \| U.S. Gov't Securities
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, available-for-sale	19,485	13,777
Fair value, available-for-sale	19,481	13,778
Cash & Cash Equivalents	6,785	4,731
Current Marketable Securities	12,696	9,047
Available-for-sale, unrecognized loss	(4)
Available-for-sale, unrecognized gain		1
Available-for-sale Securities \| Other Sovereign Securities
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, available-for-sale	1	14
Fair value, available-for-sale	1	14
Cash & Cash Equivalents	1	0
Current Marketable Securities	0	14
Available-for-sale, unrecognized loss	$ 0
Available-for-sale, unrecognized gain		$ 0

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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

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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.

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Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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

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

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

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