v3.25.3

Consolidated Statements of Changes in Shareholders' Equity (Parenthetical)ls) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Common shares, par value (USD per share)	$ 1.00	$ 1.00	$ 1.00	$ 1.00
Cash dividends declared on common stock (in dollars per share)	0.10	0.10	0.30	0.30
Cash dividends declared on Serial Preferred Shares, Series B (in dollars per share)	$ 0	$ 0	$ 0	$ 15.688377
Voting Preference Shares
Preferred stock, shares authorized (shares)	5,000,000	5,000,000	5,000,000	5,000,000
Preferred stock, shares issued (shares)	0	0	0	0
Serial Preferred Stock
Preferred stock, shares authorized (shares)	20,000,000	20,000,000	20,000,000	20,000,000

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
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Face amount or stated value per share of common stock.

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Aggregate dividends declared during the period for each share of preferred stock outstanding.

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No definition available.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(16)(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

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Number of shares issued for nonredeemable preferred shares and preferred shares redeemable solely at option of issuer. Includes, but is not limited to, preferred shares issued, repurchased, and held as treasury shares. Excludes preferred shares classified as debt.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
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-Publisher FASB
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PROGRESSIVE CORP/OH/ 10-Q