Derivative Financial Instruments Nature and Amount of Collateral Received From and Posted To Our Derivative Counterparties (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Derivative
Cash Collateral from Counterparties	$ 51.2	$ 49.4
Derivative Liability, Subject to Master Netting Arrangement, Deduction of Financial Instrument Not Offset	18.4	44.7
Cash
Derivative
Cash Collateral from Counterparties	52.0	49.4
Derivative, Collateral, Right to Reclaim Cash	0.0	5.1
Fixed Maturity Securities
Derivative
Carrying Value of Fixed Maturity Securities Posted as Collateral to Counterparties	$ 18.4	$ 39.6

Amount of obligation to return cash collateral under master netting arrangements that have not been offset against derivative assets.

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Fair value of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and contract can be net settled by means outside contract or delivery of asset, subject to master netting arrangement or similar agreement and not elected or qualified to offset, deducted from derivative liability.

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