Fair Value of Financial Instruments - Schedule of Cash, Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Marketable Securities [Line Items]
Adjusted Cost	$ 26,871	$ 29,098
Gross Unrealized Gains	1	3
Gross Unrealized Losses	(9)	(7)
Fair Value	26,863	29,094
Cash and Cash Equivalents
Marketable Securities [Line Items]
Fair Value	11,805	16,398
Short-Term Investments
Marketable Securities [Line Items]
Fair Value	15,058	12,696
Cash
Marketable Securities [Line Items]
Adjusted Cost	11,387	15,903
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	11,387	15,903
Cash \| Cash and Cash Equivalents
Marketable Securities [Line Items]
Fair Value	11,387	15,903
Cash \| Short-Term Investments
Marketable Securities [Line Items]
Fair Value	0	0
Money market funds
Marketable Securities [Line Items]
Adjusted Cost	368	109
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	368	109
Money market funds \| Cash and Cash Equivalents
Marketable Securities [Line Items]
Fair Value	368	109
Money market funds \| Short-Term Investments
Marketable Securities [Line Items]
Fair Value	0	0
U.S. government securities
Marketable Securities [Line Items]
Adjusted Cost	4,124	5,136
Gross Unrealized Gains	0	1
Gross Unrealized Losses	(2)	(1)
Fair Value	4,122	5,136
U.S. government securities \| Cash and Cash Equivalents
Marketable Securities [Line Items]
Fair Value	0	277
U.S. government securities \| Short-Term Investments
Marketable Securities [Line Items]
Fair Value	4,122	4,859
Corporate debt securities
Marketable Securities [Line Items]
Adjusted Cost	423	485
Gross Unrealized Gains	1	1
Gross Unrealized Losses	(4)	(6)
Fair Value	420	480
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	420	480
Certificates of deposit and time deposits
Marketable Securities [Line Items]
Adjusted Cost	8,155	6,995
Gross Unrealized Gains	0	1
Gross Unrealized Losses	0	0
Fair Value	8,155	6,996
Certificates of deposit and time deposits \| Cash and Cash Equivalents
Marketable Securities [Line Items]
Fair Value	0	0
Certificates of deposit and time deposits \| Short-Term Investments
Marketable Securities [Line Items]
Fair Value	8,155	6,996
Commercial paper
Marketable Securities [Line Items]
Adjusted Cost	2,414	470
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(3)	0
Fair Value	2,411	470
Commercial paper \| Cash and Cash Equivalents
Marketable Securities [Line Items]
Fair Value	50	109
Commercial paper \| Short-Term Investments
Marketable Securities [Line Items]
Fair Value	$ 2,361	$ 361

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).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
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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).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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