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Other Comprehensive Income (Loss) And Accumulated Other Comprehensive Income
 12 Months Ended
Dec. 31, 2021
Equity [Abstract]  
Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Income OTHER COMPREHENSIVE INCOME (LOSS) AND ACCUMULATED OTHER COMPREHENSIVE INCOME
The tables below display the changes in Accumulated Other Comprehensive Income (Loss) by component for the years ended December 31, 2021, 2020 and 2019 were:
(Dollars in Millions)Net Unrealized Gains (Losses) on Other InvestmentsNet Unrealized Gains (Losses) on Investments with an Allowance for Credit LossesNet Unrecognized Postretirement Benefit CostsGain (Loss) on Cash Flow HedgesTotal
Balance as of January 1, 2019$119.3 $— $(94.5)$(3.0)$21.8 
Other Comprehensive Income (Loss) Before Reclassifications342.4 — (6.1)0.3 336.6 
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) Net of Tax (Expense) Benefit of $5.8, $—, $—, $— and $5.8
(22.3)— — — (22.3)
Other Comprehensive Income (Loss) Net of Tax (Expense) Benefit of $(85.2), $—, $1.7, $(0.1) and $(83.6)
320.1 — (6.1)0.3 314.3 
Balance as of December 31, 2019$439.4 $— $(100.6)$(2.7)$336.1 
Other Comprehensive Income (Loss) Before Reclassifications304.4 (2.1)4.3 0.4 307.0 
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) Net of Tax (Expense) Benefit of $3.6, $—, $(13.5), $— and $(9.9)
(13.2)— 50.6 — 37.4 
Other Comprehensive Income (Loss) Net of Tax (Expense) Benefit of $(78.7), $0.5, $(15.3), $— and $(93.5)
291.2 (2.1)54.9 0.4 344.4 
Balance as of December 31, 2020$730.6 $(2.1)$(45.7)$(2.3)$680.5 
Other Comprehensive Income (Loss) Before Reclassifications(182.0)(1.6)(6.5)— (190.1)
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) Net of Tax (Expense) Benefit of $11.3, $—, $—, $(0.1) and $11.2
(42.8)— 0.1 0.4 (42.3)
Other Comprehensive Income (Loss) Net of Tax (Expense) Benefit of $59.7, $0.4, $2.4, $(0.1) and $62.4
(224.8)(1.6)(6.4)0.4 (232.4)
Balance as of December 31, 2021$505.8 $(3.7)$(52.1)$(1.9)$448.1 

Amounts reclassified from Accumulated Other Comprehensive Income (Loss) shown above are reported in Net Income (Loss) as follows:
Components of AOCIConsolidated Statements of Income Line Item Affected by Reclassifications
Net unrealized Gains (Losses) on Other Investments and Net Unrealized Gains (Losses) on Investments with an Allowance for Credit LossesNet Realized Gains on Sales of Investments and Impairment Losses
Net Unrecognized Postretirement Benefit CostsPolicyholders’ Benefits and Incurred Losses and Loss Adjustment Expenses, Insurance Expenses, and Interest and Other Expenses
Gain (Loss) on Cash Flow HedgesInterest and Other Expenses