Financial Instruments and Fair Value Measures - Fair Value Measures (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Assets
Investment, Type [Extensible Enumeration]	Money Market Funds [Member]	Money Market Funds [Member]
Foreign currency contracts	$ 66	$ 163
Liabilities
Foreign currency contracts	496	524
Change in fair value recognized in net earnings	(5,128)	(2,761)	$ (2,679)
Recurring
Assets
Cash and equivalents	12,814	9,201
Money market funds and time deposits	10	21
Debt securities	26	28
Equity securities	111	91
Total assets	13,027	9,504
Liabilities
Interest rate swap contracts	293	392
Contingent consideration	19,890	16,384
Total liabilities	20,386	16,908
Recurring \| Foreign currency contracts
Assets
Foreign currency contracts	66	163
Liabilities
Foreign currency contracts	203	132
Recurring \| Quoted prices in active markets for identical assets (Level 1)
Assets
Cash and equivalents	6,223	4,201
Money market funds and time deposits	0	0
Debt securities	0	0
Equity securities	86	59
Total assets	6,309	4,260
Liabilities
Interest rate swap contracts	0	0
Contingent consideration	0	0
Total liabilities	0	0
Recurring \| Quoted prices in active markets for identical assets (Level 1) \| Foreign currency contracts
Assets
Foreign currency contracts	0	0
Liabilities
Foreign currency contracts	0	0
Recurring \| Significant other observable inputs (Level 2)
Assets
Cash and equivalents	6,591	5,000
Money market funds and time deposits	10	21
Debt securities	26	28
Equity securities	25	32
Total assets	6,718	5,244
Liabilities
Interest rate swap contracts	293	392
Contingent consideration	0	0
Total liabilities	496	524
Recurring \| Significant other observable inputs (Level 2) \| Foreign currency contracts
Assets
Foreign currency contracts	66	163
Liabilities
Foreign currency contracts	203	132
Recurring \| Significant unobservable inputs (Level 3)
Assets
Cash and equivalents	0	0
Money market funds and time deposits	0	0
Debt securities	0	0
Equity securities	0	0
Total assets	0	0
Liabilities
Interest rate swap contracts	0	0
Contingent consideration	19,890	16,384
Total liabilities	19,890	16,384
Recurring \| Significant unobservable inputs (Level 3) \| Foreign currency contracts
Assets
Foreign currency contracts	0	0
Liabilities
Foreign currency contracts	$ 0	$ 0

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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Fair value, before 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 elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value, before 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 elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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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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Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3).

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Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities.

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Indicates type of investment. Includes, but is not limited to, common stock, preferred stock, convertible security, fixed income security, government security, option purchased, warrant, loan participation and assignment, commercial paper, bankers' acceptance, certificates of deposit, short-term security, repurchase agreement, and other investment company.

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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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