Cash and Cash Equivalents, Investments and Restricted Cash - Available-for-sale Investments By Contractual Maturity Date (Details) $ in Millions	Sep. 30, 2022 USD ($)
Amortized Cost
Due in one year or less	$ 1,096
Due after one year	439
Amortized Cost	1,535
Estimated Fair Market Value
Due in one year or less	1,083
Due after one year	433
Estimated Fair Market Value	$ 1,516

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

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