Investments - Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Schedule of Available for Sale Securities
Short-term investments	$ 5,137	$ 4,173
Accrued investment income	471	423
Fixed income securities
Schedule of Available for Sale Securities
Accrued investment income	$ 435	$ 389

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details