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Fair Value of Financial Instruments - Schedule of Cash, Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Marketable Securities [Line Items]
Adjusted Cost	$ 29,098	$ 22,209
Gross Unrealized Gains	3	1
Gross Unrealized Losses	7	25
Fair Value	29,094	22,185
Cash and Cash Equivalents
Marketable Securities [Line Items]
Fair Value	16,398	16,253
Short-Term Investments
Marketable Securities [Line Items]
Fair Value	12,696	5,932
Cash
Marketable Securities [Line Items]
Adjusted Cost	15,903	13,965
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	15,903	13,965
Cash | Cash and Cash Equivalents
Marketable Securities [Line Items]
Fair Value	15,903	13,965
Cash | Short-Term Investments
Marketable Securities [Line Items]
Fair Value	0	0
Money market funds
Marketable Securities [Line Items]
Adjusted Cost	109	2,188
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	109	2,188
Money market funds | Cash and Cash Equivalents
Marketable Securities [Line Items]
Fair Value	109	2,188
Money market funds | Short-Term Investments
Marketable Securities [Line Items]
Fair Value	0	0
U.S. government securities
Marketable Securities [Line Items]
Adjusted Cost	5,136	897
Gross Unrealized Gains	1	0
Gross Unrealized Losses	1	3
Fair Value	5,136	894
U.S. government securities | Cash and Cash Equivalents
Marketable Securities [Line Items]
Fair Value	277	0
U.S. government securities | Short-Term Investments
Marketable Securities [Line Items]
Fair Value	4,859	894
Corporate debt securities
Marketable Securities [Line Items]
Adjusted Cost	485	907
Gross Unrealized Gains	1	0
Gross Unrealized Losses	6	22
Fair Value	480	885
Corporate debt securities | Cash and Cash Equivalents
Marketable Securities [Line Items]
Fair Value	0	0
Corporate debt securities | Short-Term Investments
Marketable Securities [Line Items]
Fair Value	480	885
Certificates of deposit and time deposits
Marketable Securities [Line Items]
Adjusted Cost	6,995	4,252
Gross Unrealized Gains	1	1
Gross Unrealized Losses	0	0
Fair Value	6,996	4,253
Certificates of deposit and time deposits | Cash and Cash Equivalents
Marketable Securities [Line Items]
Fair Value	0	100
Certificates of deposit and time deposits | Short-Term Investments
Marketable Securities [Line Items]
Fair Value	6,996	4,153
Commercial paper
Marketable Securities [Line Items]
Adjusted Cost	470
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Fair Value	470	$ 0
Commercial paper | Cash and Cash Equivalents
Marketable Securities [Line Items]
Fair Value	109
Commercial paper | Short-Term Investments
Marketable Securities [Line Items]
Fair Value	$ 361

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- Definition

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).

+ References

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