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Goodwill and Other Intangibles	3 Months Ended
	Mar. 31, 2026
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangibles	Goodwill and Other Intangibles There were no changes in the goodwill balance of $327 million during the first three months of 2026. Included in other assets in AFG’s Balance Sheet is $184 million at March 31, 2026 and $189 million at December 31, 2025 of amortizable intangible assets related to acquisitions. These amounts are net of accumulated amortization of $80 million and $75 million, respectively. Amortization of intangibles was $5 million in both the first three months of 2026 and 2025.

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- References

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- Definition

The entire disclosure for goodwill and intangible assets.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/350-30/tableOfContent

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/350-20/tableOfContent

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