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Reinsurance (Reinsurance Amounts Recorded on Consolidated Statements of Income (Loss)) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Reinsurance [Abstract] |  |  |  |  |  |  |  |  |  |  |
Direct insurance premiums and fee income |  |  |  |  |  |  |  |  | $ 13,941 | $ 14,172 | $ 13,304
Reinsurance assumed |  |  |  |  |  |  |  |  | 98 | 94 | 95
Reinsurance ceded |  |  |  |  |  |  |  |  | (1,898) | (1,744) | (1,656)
Total insurance premiums and fee income |  |  |  |  |  |  |  |  | 12,141 | 12,522 | 11,743
Direct insurance benefits |  |  |  |  |  |  |  |  | 15,065 | 10,714 | 10,630
Reinsurance recoveries |  |  |  |  |  |  |  |  | (2,519) | (2,185) | (1,953)
Benefits | $ 1,985 | $ 5,103 | $ 2,890 | $ 2,568 | $ 2,251 | $ 2,121 | $ 1,930 | $ 2,227 | $ 12,546 | $ 8,529 | $ 8,677

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- Definition Amount of written premiums assumed from other entities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI https://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 + Details
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- Definition Amount, before premiums ceded to other entities and premiums assumed by the entity, of premiums written. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI https://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 + Details
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