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Investments - Investments (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Available-for-sale securities	$ 271	$ 272
Held-to-maturity securities	131	128
Total investments	$ 402	$ 400

X

- Definition

Amount 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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
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X

- Definition

Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
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X

- Definition

Sum of the carrying amounts as of the balance sheet date of all investments.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
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- References

No definition available.

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