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CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Parenthetical) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022
Statement of Comprehensive Income [Abstract] |  |
Change in Net Unrealized Gain on Securities Before Adjustment, Tax expense (benefit) | $ 219.6 | $ (775.1)
Change in the Effect of Discount Rate ASsumptions on the LIability for Future Policy Benefits, Net of Reinsurance net of tax expense (benefit) | (152.9) | 982.8
Change in Net Gain on Hedges, Tax Benefit | 4.7 | (2.9)
Change in Foreign Currency Translation Adjustment, Tax Expense | (0.2) | 0.9
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax | $ (1.6) | $ 0.9

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