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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

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- Definition Interest, dividends, rents, ancillary and other revenues earned but not yet received by the entity on its investments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(4)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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