Cash and Cash Equivalents and Investments in Marketable Securities - Schedule of Continuous Unrealized Losses on Available-For-Sale Debt Securities (Details) $ in Millions	Mar. 31, 2023 USD ($)
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale debt securities, Less than 12 months, Fair value	$ 221
Available-for-sale debt securities, 12 months or longer, Fair value	810
Available-for-sale debt securities, Total, Fair value	1,031
Available-for-sale debt securities, Less than 12 months, Unrealized losses	(7)
Available-for-sale debt securities, 12 months or longer, Unrealized losses	(133)
Available-for-sale debt securities, Total, Unrealized losses	(140)
U.S. government and agency obligations [Member]
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale debt securities, Less than 12 months, Fair value	90
Available-for-sale debt securities, 12 months or longer, Fair value	304
Available-for-sale debt securities, Total, Fair value	394
Available-for-sale debt securities, Less than 12 months, Unrealized losses	(3)
Available-for-sale debt securities, 12 months or longer, Unrealized losses	(56)
Available-for-sale debt securities, Total, Unrealized losses	(59)
Foreign government and agency obligations [Member]
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale debt securities, Less than 12 months, Fair value	0
Available-for-sale debt securities, 12 months or longer, Fair value	11
Available-for-sale debt securities, Total, Fair value	11
Available-for-sale debt securities, Less than 12 months, Unrealized losses	0
Available-for-sale debt securities, 12 months or longer, Unrealized losses	(2)
Available-for-sale debt securities, Total, Unrealized losses	(2)
Municipal debt securities [Member]
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale debt securities, Less than 12 months, Fair value	0
Available-for-sale debt securities, 12 months or longer, Fair value	2
Available-for-sale debt securities, Total, Fair value	2
Available-for-sale debt securities, Less than 12 months, Unrealized losses	0
Available-for-sale debt securities, 12 months or longer, Unrealized losses	(1)
Available-for-sale debt securities, Total, Unrealized losses	(1)
Corporate debt securities [Member]
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale debt securities, Less than 12 months, Fair value	46
Available-for-sale debt securities, 12 months or longer, Fair value	352
Available-for-sale debt securities, Total, Fair value	398
Available-for-sale debt securities, Less than 12 months, Unrealized losses	(2)
Available-for-sale debt securities, 12 months or longer, Unrealized losses	(57)
Available-for-sale debt securities, Total, Unrealized losses	(59)
U.S. government agency mortgage-backed securities [Member]
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale debt securities, Less than 12 months, Fair value	38
Available-for-sale debt securities, 12 months or longer, Fair value	17
Available-for-sale debt securities, Total, Fair value	55
Available-for-sale debt securities, Less than 12 months, Unrealized losses	(1)
Available-for-sale debt securities, 12 months or longer, Unrealized losses	(2)
Available-for-sale debt securities, Total, Unrealized losses	(3)
Non-agency residential mortgage-backed securities [Member]
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale debt securities, Less than 12 months, Fair value	0
Available-for-sale debt securities, 12 months or longer, Fair value	8
Available-for-sale debt securities, Total, Fair value	8
Available-for-sale debt securities, Less than 12 months, Unrealized losses	0
Available-for-sale debt securities, 12 months or longer, Unrealized losses	(1)
Available-for-sale debt securities, Total, Unrealized losses	(1)
Non-agency commercial mortgage-backed securities [Member]
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale debt securities, Less than 12 months, Fair value	0
Available-for-sale debt securities, 12 months or longer, Fair value	57
Available-for-sale debt securities, Total, Fair value	57
Available-for-sale debt securities, Less than 12 months, Unrealized losses	0
Available-for-sale debt securities, 12 months or longer, Unrealized losses	(8)
Available-for-sale debt securities, Total, Unrealized losses	(8)
Asset-backed securities [Member]
Debt Securities, Available-for-Sale [Line Items]
Available-for-sale debt securities, Less than 12 months, Fair value	47
Available-for-sale debt securities, 12 months or longer, Fair value	59
Available-for-sale debt securities, Total, Fair value	106
Available-for-sale debt securities, Less than 12 months, Unrealized losses	(1)
Available-for-sale debt securities, 12 months or longer, Unrealized losses	(6)
Available-for-sale debt securities, Total, Unrealized losses	$ (7)

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 50
-Paragraph 5
-URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 7
-URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27337-111563

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 55
-Paragraph 8
-URI https://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 7
-URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27337-111563

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
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-Section 50
-Paragraph 5
-URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455

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-Publisher FASB
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
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