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Fair Value Disclosures | 3 Months Ended
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Mar. 31, 2026
Fair Value Disclosures [Abstract] |
Fair Value Disclosures | Fair Value Disclosures Fair Values, Inputs and Valuation Techniques for Financial Assets and Liabilities Disclosures The fair value measurements and disclosures guidance defines fair value and establishes a framework for measuring fair value. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The Company has categorized its recurring fair value basis financial assets and liabilities into a three-level fair value hierarchy based on the priority of the inputs to the valuation technique. The fair value hierarchy gives the highest priority to quoted prices in active markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3). The inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, the level in the fair value hierarchy within which the fair value measurement in its entirety falls has been determined based on the lowest level input that is significant to the fair value measurement in its entirety. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and takes into account factors specific to the asset or liability. The levels of the fair value hierarchy are described below: •Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company can access. •Level 2 inputs utilize other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the asset or liability. Level 2 inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active and inputs other than quoted prices that are observable in the marketplace for the asset or liability. The observable inputs are used in valuation models to calculate the fair value for the asset or liability. •Level 3 inputs are unobservable but are significant to the fair value measurement for the asset or liability, and include situations where there is little, if any, market activity for the asset or liability. These inputs reflect management’s own assumptions about the assumptions a market participant would use in pricing the asset or liability. The Company reviews fair value hierarchy classifications on a quarterly basis. Changes in the observability of valuation inputs may result in a reclassification of levels for certain securities within the fair value hierarchy. The following tables present the Company’s fair value hierarchy for assets and liabilities measured at fair value on a recurring basis as of March 31, 2026 and December 31, 2025. The amounts presented below for short-term investments, other investments, cash equivalents, other assets and other liabilities differ from the amounts presented in the consolidated balance sheets because only certain investments or certain assets and liabilities within these line items are measured at estimated fair value. Other investments are comprised of investments in the Assurant Investment Plan (“AIP”), the American Security Insurance Company Investment Plan, the Assurant Deferred Compensation Plan, the Retiree Medical Pension 401(h), and other derivatives. Other liabilities are comprised of investments in the AIP and contingent considerations related to business combinations. The fair value amounts presented for other investments are received directly from third parties.
| March 31, 2026 |
| Total |  | Level 1 |  | Level 2 |  | Level 3 |
Financial Assets |  |  |  |  |  |  |  |
Fixed maturity securities: |  |  |  |  |  |  |  |
U.S. government and government agencies and authorities | $ | 63.1 |  |  | $ | — |  |  | $ | 63.1 |  |  | $ | — |  |
States, municipalities and political subdivisions | 94.8 |  |  | — |  |  | 94.8 |  |  | — |  |
Foreign governments | 615.0 |  |  | — |  |  | 615.0 |  |  | — |  |
Asset-backed | 850.1 |  |  | — |  |  | 713.4 |  |  | 136.7 |  |
Commercial mortgage-backed | 419.0 |  |  | — |  |  | 419.0 |  |  | — |  |
Residential mortgage-backed | 1,001.5 |  |  | — |  |  | 1,001.5 |  |  | — |  |
U.S. corporate | 3,970.5 |  |  | — |  |  | 3,897.8 |  |  | 72.7 |  |
Foreign corporate | 1,769.8 |  |  | — |  |  | 1,756.3 |  |  | 13.5 |  |
Equity securities: |  |  |  |  |  |  |  |
Mutual funds | 37.9 |  |  | 16.3 |  |  | — |  |  | 21.6 |  |
Common stocks | 2.2 |  |  | 2.2 |  |  | — |  |  | — |  |
Non-redeemable preferred stocks | 157.2 |  |  | — |  |  | 156.8 |  |  | 0.4 |  |
Short-term investments | 278.0 |  |  | 269.8 |  | (2) | 8.2 |  | (3) | — |  |
Other investments | 69.5 |  |  | 69.5 |  | (1) | — |  |  | — |  |
Cash equivalents | 1,156.7 |  |  | 1,141.9 |  | (2) | 14.8 |  | (3) | — |  |
Other assets | 5.0 |  |  | — |  |  | — |  |  | 5.0 |  | (4)
Total financial assets | $ | 10,490.3 |  |  | $ | 1,499.7 |  |  | $ | 8,740.7 |  |  | $ | 249.9 |  |
Financial Liabilities |  |  |  |  |  |  |  |
Other liabilities | $ | 93.6 |  |  | $ | 61.9 |  | (1) | $ | — |  |  | $ | 31.7 |  | (5)
Total financial liabilities | $ | 93.6 |  |  | $ | 61.9 |  |  | $ | — |  |  | $ | 31.7 |  |
| December 31, 2025 |
| Total |  | Level 1 |  | Level 2 |  | Level 3 |
Financial Assets |  |  |  |  |  |  |  |
Fixed maturity securities: |  |  |  |  |  |  |  |
U.S. government and government agencies and authorities | $ | 62.9 |  |  | $ | — |  |  | $ | 62.9 |  |  | $ | — |  |
States, municipalities and political subdivisions | 96.1 |  |  | — |  |  | 96.1 |  |  | — |  |
Foreign governments | 593.9 |  |  | — |  |  | 593.9 |  |  | — |  |
Asset-backed | 845.7 |  |  | — |  |  | 715.9 |  |  | 129.8 |  |
Commercial mortgage-backed | 417.4 |  |  | — |  |  | 417.4 |  |  | — |  |
Residential mortgage-backed | 954.7 |  |  | — |  |  | 954.7 |  |  | — |  |
U.S. corporate | 3,877.6 |  |  | — |  |  | 3,812.0 |  |  | 65.6 |  |
Foreign corporate | 1,729.4 |  |  | — |  |  | 1,721.5 |  |  | 7.9 |  |
Equity securities: |  |  |  |  |  |  |  |
Mutual funds | 37.3 |  |  | 16.1 |  |  | — |  |  | 21.2 |  |
Common stocks | 2.0 |  |  | 2.0 |  |  | — |  |  | — |  |
Non-redeemable preferred stocks | 167.8 |  |  | — |  |  | 167.5 |  |  | 0.3 |  |
Short-term investments | 336.3 |  |  | 329.0 |  | (2) | 7.3 |  | (3) | — |  |
Other investments | 72.2 |  |  | 72.2 |  | (1) | — |  |  | — |  |
Cash equivalents | 1,349.3 |  |  | 1,335.5 |  | (2) | 13.8 |  | (3) | — |  |
Other assets | 6.4 |  |  | — |  |  | — |  |  | 6.4 |  | (4)
Total financial assets | $ | 10,549.0 |  |  | $ | 1,754.8 |  |  | $ | 8,563.0 |  |  | $ | 231.2 |  |
Financial Liabilities |  |  |  |  |  |  |  |
Other liabilities | $ | 85.0 |  |  | $ | 62.7 |  | (1) | $ | — |  |  | $ | 22.3 |  | (5)
Total financial liabilities | $ | 85.0 |  |  | $ | 62.7 |  |  | $ | — |  |  | $ | 22.3 |  |
(1)Primarily includes mutual funds and related obligations. (2)Primarily includes money market funds. (3)Primarily includes fixed maturity securities. (4)Primarily includes derivatives. (5)Includes contingent consideration liabilities. The following tables disclose the carrying value, fair value and hierarchy level of the financial instruments that are not recognized or are not carried at fair value in the consolidated balance sheets as of the dates indicated:
| March 31, 2026
|  |  | Fair Value
| Carrying Value |  | Total |  | Level 1 |  | Level 2 |  | Level 3
Financial Assets |  |  |  |  |  |  |  |  |
Commercial mortgage loans on real estate | $ | 309.5 |  |  | $ | 306.0 |  |  | $ | — |  |  | $ | — |  |  | $ | 306.0 |
Other investments | 12.3 |  |  | 12.3 |  |  | 1.1 |  |  | — |  |  | 11.2 |
Other assets | 27.1 |  |  | 27.1 |  |  | — |  |  | — |  |  | 27.1 |
Total financial assets | $ | 348.9 |  |  | $ | 345.4 |  |  | $ | 1.1 |  |  | $ | — |  |  | $ | 344.3 |
Financial Liabilities |  |  |  |  |  |  |  |  |
Policy reserves under investment products (Individual and group annuities, subject to discretionary withdrawal) (1) | $ | 1.8 |  |  | $ | 1.7 |  |  | $ | — |  |  | $ | — |  |  | $ | 1.7 |
Funds withheld under reinsurance | 287.1 |  |  | 287.1 |  |  | 287.1 |  |  | — |  |  | — |
Debt | 2,207.5 |  |  | 2,143.0 |  |  | — |  |  | 2,143.0 |  |  | — |
Total financial liabilities | $ | 2,496.4 |  |  | $ | 2,431.8 |  |  | $ | 287.1 |  |  | $ | 2,143.0 |  |  | $ | 1.7 |
| December 31, 2025
|  |  | Fair Value
| Carrying Value |  | Total |  | Level 1 |  | Level 2 |  | Level 3
Financial Assets |  |  |  |  |  |  |  |  |
Commercial mortgage loans on real estate | $ | 324.7 |  |  | $ | 323.1 |  |  | $ | — |  |  | $ | — |  |  | $ | 323.1 |
Other investments | 12.4 |  |  | 12.4 |  |  | 1.1 |  |  | — |  |  | 11.3 |
Other assets | 31.3 |  |  | 31.3 |  |  | — |  |  | — |  |  | 31.3 |
Total financial assets | $ | 368.4 |  |  | $ | 366.8 |  |  | $ | 1.1 |  |  | $ | — |  |  | $ | 365.7 |
Financial Liabilities |  |  |  |  |  |  |  |  |
Policy reserves under investment products (Individual and group annuities, subject to discretionary withdrawal) (1) | $ | 1.8 |  |  | $ | 1.8 |  |  | $ | — |  |  | $ | — |  |  | $ | 1.8 |
Funds withheld under reinsurance | 266.4 |  |  | 266.4 |  |  | 266.4 |  |  | — |  |  | — |
Debt | 2,206.9 |  |  | 2,164.5 |  |  | — |  |  | 2,164.5 |  |  | — |
Total financial liabilities | $ | 2,475.1 |  |  | $ | 2,432.7 |  |  | $ | 266.4 |  |  | $ | 2,164.5 |  |  | $ | 1.8 |
(1)Only the fair value of the Company’s policy reserves for investment-type contracts (those without significant mortality or morbidity risk) are reflected in the tables above.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 107 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-107 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 100 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-100 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2E -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 940 -SubTopic 820 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478119/940-820-50-1 + Details
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