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Disclosures about Fair Value of Financial Instruments
12 Months Ended
Dec. 31, 2023
Fair Value Disclosures [Abstract]  
Disclosures about Fair Value of Financial Instruments Disclosures about Fair Value of Financial Instruments
Cash. The carrying amount approximates fair value.
Investment securities and short-term investments. See Note 3, “Investments,” for additional information.
Premiums receivable and reinsurance recoverables on paid losses. The carrying value of current receivables and reinsurance recoverables on paid losses approximates fair value due to their short term nature.
Debt. At December 31, 2023 and 2022, the fair value of our debt instruments is determined using both Level 1 and Level 2 inputs, as previously defined in Note 3, “Investments”.
We receive fair value prices from third-party pricing services for our financial instruments as well as for similar financial instruments. These prices are determined using observable market information such as publicly traded quoted prices, and trading prices for similar financial instruments actively being traded in the current market. We have reviewed the processes used by the third-party providers for pricing the securities and have determined that these processes result in fair values consistent with GAAP requirements. In addition, we review these prices for reasonableness, and have not adjusted any prices received from the third-party providers as of December 31, 2023 and December 31, 2022. A description of the valuation techniques we use to measure these liabilities at fair value is as follows:
Senior Unsecured Fixed Rate Notes Level 1:
Our senior unsecured fixed rate notes are valued using Level 1 inputs. For these securities, we obtain fair value measurements from a third-party pricing service using quoted prices (unadjusted) in active markets at the reporting date.
Junior Subordinated Debentures and Floating Rate Loan Stock Level 2:
Our trust preferred debentures, subordinated debentures and floating rate loan stock are typically valued using Level 2 inputs. For these securities, we obtain fair value measurements using quoted prices for similar securities being traded in active markets at the reporting date, as our specific debt instruments are less frequently traded.
A summary of our financial instruments whose carrying value did not equal fair value is shown below:
December 31,
 20232022
(in millions)Carrying
Amount
Fair
Value
Carrying
Amount
Fair
Value
Junior subordinated debentures:
Trust preferred debentures$160.8 $165.9 $172.7 $165.8 
Subordinated debentures80.4 83.3 85.9 88.1 
Total junior subordinated debentures241.2 249.2 258.6 253.9 
Senior unsecured fixed rate notes128.0 132.7 140.5 112.7 
Floating rate loan stock (1)
— — 54.7 52.5 
$369.2 $381.9 $453.8 $419.1 
(1) Floating rate loan stock reclassified to liabilities held-for-sale in 2022. See Note 2, “Recent Acquisitions, Disposals & Other Transactions”.
Based on an analysis of the inputs, our financial instruments measured at fair value on a recurring basis have been categorized as follows:
 Fair Value Measurements at Reporting Date Using
(in millions)December 31, 2023
Level 1 (1)
Level 2 (2)
Level 3 (3)
Junior subordinated debentures:    
Trust preferred debentures$165.9 $— $165.9 $— 
Subordinated debentures83.3 — 83.3 — 
Total junior subordinated debentures249.2 — 249.2 — 
Senior unsecured fixed rate notes132.7 132.7 — — 
$381.9 $132.7 $249.2 $— 
(1)Quoted prices in active markets for identical assets
(2)Significant other observable inputs
(3)Significant unobservable inputs
 Fair Value Measurements at Reporting Date Using
(in millions)December 31, 2022
Level 1 (1)
Level 2 (2)
Level 3 (3)
Junior subordinated debentures:    
Trust preferred debentures$165.8 $— $165.8 $— 
Subordinated debentures88.1 — 88.1 — 
Total junior subordinated debentures253.9 — 253.9 — 
Senior unsecured fixed rate notes112.7 112.7 — — 
Floating rate loan stock52.5 — 52.5 — 
$419.1 $112.7 $306.4 $— 
(1)Quoted prices in active markets for identical assets
(2)Significant other observable inputs
(3)Significant unobservable inputs