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Investments - Contractual Maturities of Available-for-Sale Investments (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Amortized Cost
Due in one year or less	$ 280
Due after one year through five years	2,340
Due after five years through ten years	455
Due after ten years	899
Amortized Cost	3,974	$ 3,709
Estimated Fair Value
Due in one year or less	277
Due after one year through five years	2,245
Due after five years through ten years	443
Due after ten years	845
Total	$ 3,810

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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), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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