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Supplementary Insurance Information | 12 Months Ended
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Dec. 31, 2023
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Abstract] |
Supplementary Insurance Information | AMERICAN FINANCIAL GROUP, INC. AND SUBSIDIARIES SCHEDULE III — SUPPLEMENTARY INSURANCE INFORMATION THREE YEARS ENDED DECEMBER 31, 2023 (IN MILLIONS)
Segment |  | Deferred policy acquisition costs |  | Reserves for claims and unpaid losses and LAE |  | Unearned premiums |  | Net earned premiums |  | Net investment income |  | Claims, losses and settlement expenses |  | Amortization of deferred policy acquisition costs |  | Other operating expenses |  | Net written premiums
2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property and casualty insurance |  | $ | 309 |  |  | $ | 13,087 |  |  | $ | 3,451 |  |  | $ | 6,531 |  |  | $ | 729 |  |  | $ | 4,017 |  |  | $ | 720 |  |  | $ | 1,235 |  |  | $ | 6,692 |
Other |  | — |  |  | — |  |  | — |  |  | — |  |  | 13 |  |  | 16 |  |  | — |  |  | 766 |  |  | — |
Total |  | $ | 309 |  |  | $ | 13,087 |  |  | $ | 3,451 |  |  | $ | 6,531 |  |  | $ | 742 |  |  | $ | 4,033 |  |  | $ | 720 |  |  | $ | 2,001 |  |  | $ | 6,692 |
2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property and casualty insurance |  | $ | 288 |  |  | $ | 11,974 |  |  | $ | 3,246 |  |  | $ | 6,085 |  |  | $ | 683 |  |  | $ | 3,629 |  |  | $ | 641 |  |  | $ | 1,091 |  |  | $ | 6,206 |
Other |  | — |  |  | — |  |  | — |  |  | — |  |  | 34 |  |  | — |  |  | — |  |  | 556 |  |  | — |
Total |  | $ | 288 |  |  | $ | 11,974 |  |  | $ | 3,246 |  |  | $ | 6,085 |  |  | $ | 717 |  |  | $ | 3,629 |  |  | $ | 641 |  |  | $ | 1,647 |  |  | $ | 6,206 |
2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property and casualty insurance |  | $ | 267 |  |  | $ | 11,074 |  |  | $ | 3,041 |  |  | $ | 5,404 |  |  | $ | 663 |  |  | $ | 3,157 |  |  | $ | 580 |  |  | $ | 967 |  |  | $ | 5,573 |
Other |  | — |  |  | — |  |  | — |  |  | — |  |  | 67 |  |  | — |  |  | — |  |  | 513 |  |  | — |
Total |  | $ | 267 |  |  | $ | 11,074 |  |  | $ | 3,041 |  |  | $ | 5,404 |  |  | $ | 730 |  |  | $ | 3,157 |  |  | $ | 580 |  |  | $ | 1,480 |  |  | $ | 5,573 |

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- References No definition available. + Details
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- Definition The entire disclosure for supplementary insurance information by segment. Includes, but is not limited to, deferred policy acquisition cost; future policy benefit, loss, claim and loss expenses; unearned premium; other policy claim and benefit payable; premium revenue; net investment income; benefit, claim, loss and settlement expenses; amortization of deferred policy acquisition cost; other operating expense; and premium written. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 16 -Publisher SEC Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-16(Column G)(Footnote 3)) -SubTopic 235 -Topic 944 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480149/944-235-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-16(Column J)(Footnote 3)) -SubTopic 235 -Topic 944 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480149/944-235-S99-1 + Details
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