Fair Value of Financial Instruments - Schedule of Cash, Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
Sep. 30, 2023	Dec. 31, 2022
Marketable Securities [Line Items]
Adjusted Cost	$ 26,089	$ 22,209
Gross Unrealized Gains	1	1
Gross Unrealized Losses	(13)	(25)
Fair Value	26,077	22,185
Cash and Cash Equivalents
Marketable Securities [Line Items]
Fair Value	15,932	16,253
Short-Term Investments
Marketable Securities [Line Items]
Fair Value	10,145	5,932
Cash
Marketable Securities [Line Items]
Adjusted Cost	14,779	13,965
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	14,779	13,965
Cash \| Cash and Cash Equivalents
Marketable Securities [Line Items]
Fair Value	14,779	13,965
Cash \| Short-Term Investments
Marketable Securities [Line Items]
Fair Value	0	0
Money market funds
Marketable Securities [Line Items]
Adjusted Cost	1,153	2,188
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	1,153	2,188
Money market funds \| Cash and Cash Equivalents
Marketable Securities [Line Items]
Fair Value	1,153	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	4,800	897
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(2)	(3)
Fair Value	4,798	894
U.S. government securities \| Cash and Cash Equivalents
Marketable Securities [Line Items]
Fair Value	0	0
U.S. government securities \| Short-Term Investments
Marketable Securities [Line Items]
Fair Value	4,798	894
Corporate debt securities
Marketable Securities [Line Items]
Adjusted Cost	569	907
Gross Unrealized Gains	1	0
Gross Unrealized Losses	(11)	(22)
Fair Value	559	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	559	885
Certificates of deposit and time deposits
Marketable Securities [Line Items]
Adjusted Cost	4,788	4,252
Gross Unrealized Gains	0	1
Gross Unrealized Losses	0	0
Fair Value	4,788	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	$ 4,788	$ 4,153

Amortized cost of 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 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479130/326-30-45-1

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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-Subparagraph (b)
-Publisher FASB
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (aa)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481830/320-10-45-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(6))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
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-Paragraph 1
-Publisher FASB
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