Investments and Fair Value Measurements - Summary of Hierarchy for Assets and Liabilities Measured at Fair Value Recurring Basis (Details) - USD ($) $ in Millions	Jan. 03, 2021	Dec. 29, 2019
Assets:
Available-for-sale securities	$ 1,286	$ 1,266
Marketable equity securities	376	106
Debt securities in government-sponsored entities
Assets:
Available-for-sale securities	10	18
Corporate debt securities
Assets:
Available-for-sale securities	445	630
U.S. Treasury securities
Assets:
Available-for-sale securities	831	618
Fair value, Measurements, Recurring
Assets:
Marketable equity securities	376	106
Contingent value right	35	29
Derivative assets related to terminated acquisition	26	10
Deferred compensation plan assets	55	48
Total assets measured at fair value	3,290	3,191
Liabilities:
Deferred compensation plan liability	51	46
Fair value, Measurements, Recurring \| Money market funds (cash equivalents)
Assets:
Money market funds (cash equivalents)	1,512	1,732
Fair value, Measurements, Recurring \| Debt securities in government-sponsored entities
Assets:
Available-for-sale securities	10	18
Fair value, Measurements, Recurring \| Corporate debt securities
Assets:
Available-for-sale securities	445	630
Fair value, Measurements, Recurring \| U.S. Treasury securities
Assets:
Available-for-sale securities	831	618
Fair value, Measurements, Recurring \| Level 1
Assets:
Marketable equity securities	376	106
Contingent value right	0	0
Derivative assets related to terminated acquisition	0	0
Deferred compensation plan assets	0	0
Total assets measured at fair value	2,719	2,456
Liabilities:
Deferred compensation plan liability	0	0
Fair value, Measurements, Recurring \| Level 1 \| Money market funds (cash equivalents)
Assets:
Money market funds (cash equivalents)	1,512	1,732
Fair value, Measurements, Recurring \| Level 1 \| Debt securities in government-sponsored entities
Assets:
Available-for-sale securities	0	0
Fair value, Measurements, Recurring \| Level 1 \| Corporate debt securities
Assets:
Available-for-sale securities	0	0
Fair value, Measurements, Recurring \| Level 1 \| U.S. Treasury securities
Assets:
Available-for-sale securities	831	618
Fair value, Measurements, Recurring \| Level 2
Assets:
Marketable equity securities	0	0
Contingent value right	0	0
Derivative assets related to terminated acquisition	0	0
Deferred compensation plan assets	55	48
Total assets measured at fair value	510	696
Liabilities:
Deferred compensation plan liability	51	46
Fair value, Measurements, Recurring \| Level 2 \| Money market funds (cash equivalents)
Assets:
Money market funds (cash equivalents)	0	0
Fair value, Measurements, Recurring \| Level 2 \| Debt securities in government-sponsored entities
Assets:
Available-for-sale securities	10	18
Fair value, Measurements, Recurring \| Level 2 \| Corporate debt securities
Assets:
Available-for-sale securities	445	630
Fair value, Measurements, Recurring \| Level 2 \| U.S. Treasury securities
Assets:
Available-for-sale securities	0	0
Fair value, Measurements, Recurring \| Level 3
Assets:
Marketable equity securities	0	0
Contingent value right	35	29
Derivative assets related to terminated acquisition	26	10
Deferred compensation plan assets	0	0
Total assets measured at fair value	61	39
Liabilities:
Deferred compensation plan liability	0	0
Fair value, Measurements, Recurring \| Level 3 \| Money market funds (cash equivalents)
Assets:
Money market funds (cash equivalents)	0	0
Fair value, Measurements, Recurring \| Level 3 \| Debt securities in government-sponsored entities
Assets:
Available-for-sale securities	0	0
Fair value, Measurements, Recurring \| Level 3 \| Corporate debt securities
Assets:
Available-for-sale securities	0	0
Fair value, Measurements, Recurring \| Level 3 \| U.S. Treasury securities
Assets:
Available-for-sale securities	$ 0	$ 0

Contingent Value Right, 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.

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Amount 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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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.

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Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

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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.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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