Derivative Instruments (Notional and Fair Value of Derivative Instruments) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Fair Value	$ 431,727	$ 1,277,480
Derivatives designated as hedging instruments \| Fair Value Hedging \| Interest rate swaps
Derivatives, Fair Value [Line Items]
Notional Amount	408,369	0
Fair Value	32,769	0
Derivatives not designated as hedging instruments
Derivatives, Fair Value [Line Items]
Notional Amount	38,929,554	40,093,373
Fair Value	398,958	1,277,480
Derivative liabilities	4,378,981	7,962,599
Derivatives not designated as hedging instruments \| Call options
Derivatives, Fair Value [Line Items]
Notional Amount	38,927,534	40,091,353
Fair Value	397,789	1,276,574
Derivatives not designated as hedging instruments \| Warrants
Derivatives, Fair Value [Line Items]
Notional Amount	2,020	2,020
Fair Value	1,169	906
Derivatives not designated as hedging instruments \| Fixed index annuities - embedded derivatives
Derivatives, Fair Value [Line Items]
Derivative liabilities	4,820,845	7,964,961
Derivatives not designated as hedging instruments \| Reinsurance related embedded derivative
Derivatives, Fair Value [Line Items]
Derivative liabilities	$ (441,864)	$ (2,362)

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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- Definition

Nominal or face amount used to calculate payment on derivative.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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