Investments - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Investments [Line Items]
Short-term investments	$ 6,428	$ 6,807
Accrued investment income	339	371
Fixed income securities
Investments [Line Items]
Accrued investment income	311	351
Agent loans, net
Investments [Line Items]
Accrued investment income	$ 2
High credit quality, percentage	81.00%
Allowance	$ (5)
Mortgage loans
Investments [Line Items]
Accrued investment income	2	2
Bank loans, net
Investments [Line Items]
Accrued investment income	$ 5	$ 3

Agent Loans, High Credit Quality, Percentage

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Interest, dividends, rents, ancillary and other revenues earned but not yet received by the entity on its investments.

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The reserve to cover probable credit losses related to specifically identified fixed maturity real estate loans as well as probable credit losses inherent in the remainder of that loan portfolio.

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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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Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current.

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