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v3.23.2

Reinsurance (Tables) | 6 Months Ended
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Jun. 30, 2023
Reinsurance Disclosures [Abstract] |
Reinsurance Recoverable, Credit Quality Indicator [Table Text Block] |
Reinsurance Recoverables by Credit Quality Indicator
| As of June 30, 2023 |  | As of December 31, 2022
| P&C | Group Benefits | Corporate | Total |  | P&C | Group Benefits | Corporate | Total
A.M. Best Financial Strength Rating |  |  |  |  |  |  |  |  |
A++ | $ | 2,173 |  | $ | — |  | $ | — |  | $ | 2,173 |  |  | $ | 2,094 |  | $ | — |  | $ | — |  | $ | 2,094 |
A+ | 2,049 |  | 238 |  | 247 |  | 2,534 |  |  | 2,169 |  | 239 |  | 259 |  | 2,667 |
A | 893 |  | — |  | — |  | 893 |  |  | 763 |  | 1 |  | — |  | 764 |
A- | 70 |  | 6 |  | — |  | 76 |  |  | 79 |  | 6 |  | — |  | 85 |
B++ | 601 |  | — |  | 3 |  | 604 |  |  | 616 |  | — |  | 2 |  | 618 |
Below B++ | 20 |  | — |  | — |  | 20 |  |  | 20 |  | — |  | — |  | 20 |
Total Rated by A.M. Best | 5,806 |  | 244 |  | 250 |  | 6,300 |  |  | 5,741 |  | 246 |  | 261 |  | 6,248 |
Mandatory (Assigned) and Voluntary Risk Pools | 207 |  | — |  | — |  | 207 |  |  | 218 |  | — |  | — |  | 218 |
Captives | 304 |  | — |  | — |  | 304 |  |  | 319 |  | — |  | — |  | 319 |
Other not rated companies | 205 |  | 6 |  | — |  | 211 |  |  | 279 |  | 5 |  | — |  | 284 |
Gross Reinsurance Recoverables | 6,522 |  | 250 |  | 250 |  | 7,022 |  |  | 6,557 |  | 251 |  | 261 |  | 7,069 |
Allowance for uncollectible reinsurance | (107) |  | (1) |  | (2) |  | (110) |  |  | (102) |  | (1) |  | (2) |  | (105) |
Net Reinsurance Recoverables | $ | 6,415 |  | $ | 249 |  | $ | 248 |  | $ | 6,912 |  |  | $ | 6,455 |  | $ | 250 |  | $ | 259 |  | $ | 6,964 |
Reinsurance Recoverable, Allowance for Credit Loss [Table Text Block] |
| Allowance for Uncollectible Reinsurance for the Three and Six Months Ended
|  | Three Months Ended June 30, |  | Six Months Ended June 30,
|  | 2023 | 2022 |  | 2023 | 2022
| P&C beginning allowance for uncollectible reinsurance | $ | 102 |  | $ | 96 |  |  | $ | 102 |  | $ | 96 |
| Beginning allowance for disputed amounts | 58 |  | 56 |  |  | 60 |  | 54 |
| P&C beginning ACL | 44 |  | 40 |  |  | 42 |  | 42 |
| Current period provision (release) | 1 |  | 1 |  |  | 3 |  | (1) |
| P&C ending ACL | 45 |  | 41 |  |  | 45 |  | 41 |
| Ending allowance for disputed amounts | 62 |  | 61 |  |  | 62 |  | 61 |
| P&C ending allowance for uncollectible reinsurance | $ | 107 |  | $ | 102 |  |  | $ | 107 |  | $ | 102 |
| Group Benefits allowance for uncollectible reinsurance | $ | 1 |  | $ | 1 |  |  | $ | 1 |  | $ | 1 |
| Corporate allowance for uncollectible reinsurance | $ | 2 |  | $ | 2 |  |  | $ | 2 |  | $ | 2 |
| Total allowance for uncollectible reinsurance | $ | 110 |  | $ | 105 |  |  | $ | 110 |  | $ | 105 |

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- Definition Tabular disclosure of allowance for credit loss on reinsurance recoverable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 + Details
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- Definition Tabular disclosure of credit quality indicator for reinsurance recoverable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-5 + Details
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