v3.25.1
Accumulated Other Comprehensive Income (Loss) (Tables)
 3 Months Ended
Mar. 31, 2025
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss)
Components of accumulated other comprehensive income (loss) (AOCI), after tax, and related changes are as follows:

Net Unrealized Loss on Securities
Effect of Change in Discount Rate Assumptions on the LFPB1
Net Loss on Derivatives
Foreign Currency Translation AdjustmentUnrecognized Pension and Postretirement Benefit CostsTotal
(in millions of dollars)
Balance at December 31, 2024$(2,755.2)$1,185.4 $(270.7)$(343.0)$(340.2)$(2,523.7)
Other Comprehensive Income (Loss) Before Reclassifications265.6 (166.3)47.5 42.3 (1.8)187.3 
Amounts Reclassified from AOCI
156.4 — (2.0)— 3.2 157.6 
Net Other Comprehensive Income (Loss)422.0 (166.3)45.5 42.3 1.4 344.9 
Balance at March 31, 2025$(2,333.2)$1,019.1 $(225.2)$(300.7)$(338.8)$(2,178.8)
Balance at December 31, 2023$(1,919.1)$(648.4)$(73.7)$(321.1)$(345.7)$(3,308.0)
Other Comprehensive Income (Loss) Before Reclassifications(454.1)873.7 (48.9)(11.5)(2.4)356.8 
Amounts Reclassified from AOCI
12.4 — (4.4)— 3.2 11.2 
Net Other Comprehensive Income (Loss)(441.7)873.7 (53.3)(11.5)0.8 368.0 
Balance at March 31, 2024$(2,360.8)$225.3 $(127.0)$(332.6)$(344.9)$(2,940.0)
1Liability for Future Policy Benefits
Schedule of Reclassification out of Accumulated Other Comprehensive Income (Loss)
Amounts reclassified from AOCI loss were recognized in our consolidated statements of income as follows:

Three Months Ended March 31
20252024
(in millions of dollars)
Net Unrealized Loss on Securities
Net Investment Loss on Fixed Maturity Securities
Net Loss on Sales$(44.7)$(15.8)
Impairment Loss(152.4)— 
Credit Losses (1.0)— 
(198.1)(15.8)
Income Tax Benefit(41.7)(3.4)
Total$(156.4)$(12.4)
Net Loss on Derivatives
Net Investment Income
Gain on Interest Rate Swaps and Forwards$2.2 $5.8 
Loss on Foreign Currency Interest Rate Swaps— (0.1)
Net Investment Gain (Loss)
Gain on Interest Rate Swaps0.4 — 
Loss on Foreign Currency Interest Rate Swaps(0.1)(0.1)
2.5 5.6 
Income Tax Expense0.5 1.2 
Total$2.0 $4.4 
Unrecognized Pension and Postretirement Benefit Costs
Other Expenses
Amortization of Net Actuarial Loss$(4.1)$(4.2)
Amortization of Prior Service Credit0.1 0.1 
(4.0)(4.1)
Income Tax Benefit(0.8)(0.9)
Total$(3.2)$(3.2)