v3.26.1
Accumulated Other Comprehensive Income (Loss) (Tables)
3 Months Ended
Mar. 31, 2026
Equity [Abstract]  
Summary of Changes in Accumulated Other Comprehensive Income
The following table summarizes the changes in accumulated other comprehensive income (loss) by component, net of tax, for the periods indicated: 
Three Months Ended March 31,
Unrealized holding gains (losses) on AFS securitiesUnrealized holding gains (losses) on SERPUnrealized holding gains (losses) on junior subordinated debtTotal
(in millions)
Balance, December 31, 2025$(340.7)$ $(3.5)$(344.2)
Other comprehensive (loss) income before reclassifications(74.2)(0.3)1.0 (73.5)
Amounts reclassified from AOCI(37.8)  (37.8)
Net current-period other comprehensive (loss) income(112.0)(0.3)1.0 (111.3)
Balance, March 31, 2026$(452.7)$(0.3)$(2.5)$(455.5)
Balance, December 31, 2024$(534.7)$(0.4)$1.4 $(533.7)
Other comprehensive income before reclassifications55.7 — 1.1 56.8 
Amounts reclassified from AOCI(1.6)— — (1.6)
Net current-period other comprehensive income54.1 — 1.1 55.2 
Balance, March 31, 2025$(480.6)$(0.4)$2.5 $(478.5)