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Market value of entity divided by earnings before interest, taxes, depreciation and amortization (EBITDA), used as an input to measure fair value.

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Actuarially determined assumption around contract lapse rates used as in input in calculating fair value of future policy benefits (primarily embedded derivatives associated with living benefit features on annuity contracts.

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Fair Value Inputs Liquidation Premium

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Liquidation value of asset or liability used as an input to a fair value calculation.

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Actuarially determined assumption around client mortality rates used as in input in calculating fair value of future policy benefits (primarily embedded derivatives associated with living benefit features on annuity contracts.

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Fair value inputs option budget.

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Fair Value Inputs, Policyholder Age

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Fair Value Inputs Spread Over Sofr

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Actuarially determined assumption around utilization rates used as in input in calculating fair value of future policy benefits (primarily embedded derivatives associated with living benefit features on annuity contracts.

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Actuarially determined assumption around withdrawal rates used as in input in calculating fair value of future policy benefits (primarily embedded derivatives associated with living benefit features on annuity contracts.

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Quantitative Info Commercial Mortgage Backed Securities.

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Receivables from parent and affiliates.

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Reinsurance Recoverable And Deposit Receivables, Including Reinsurance Premium Paid

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No definition available.

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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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Amount of the reinsurer's funds held on its behalf by the ceding insurer, including funds held in trust, under reinsurance treaties or contracts with the assuming insurer as security for the payment of the obligations thereunder.

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Amount of asset position for contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk.

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Amount of liability position for contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk.

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Amount of investment in marketable security.

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Amount due to policyholders for funds held that are returnable under the terms of insurance contracts, classified as other.

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Fair Value of Assets and Liabilities (Quantitative Info for Level 3 Inputs) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Corporate securities	$ 792,018	$ 2,650,542
Market risk benefit assets	2,534,340	2,637,363	$ 2,550,164
Reinsurance recoverables and deposit receivables	50,219,999	48,247,817
Receivables from parent and affiliates	687,750	678,028
Market risk benefit liabilities	4,668,492	4,281,244	$ 4,370,960
Fair Value, Measurements, Recurring
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Market risk benefit assets	2,534,340	2,637,363
Reinsurance recoverables and deposit receivables	722,068	645,193
Receivables from parent and affiliates	591,995	520,462
Market risk benefit liabilities	4,668,492	4,281,244
Policyholders’ account balances	15,113,285	12,624,585
Level 3
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Funds held under reinsurance agreements	$ 10,000,000
Level 3 \| Minimum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Fair Value Inputs, Policyholder Age	50 years
Level 3 \| Minimum \| Market risk benefit liabilities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Mortality rate	0.00%
Level 3 \| Maximum
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Fair Value Inputs, Policyholder Age	90 years
Level 3 \| Fair Value, Measurements, Recurring
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Market risk benefit assets	$ 2,534,340	2,637,363
Reinsurance recoverables and deposit receivables	722,068	645,193
Receivables from parent and affiliates	366,535	351,390
Market risk benefit liabilities	4,668,492	4,281,244
Policyholders’ account balances	$ 15,113,285	$ 12,624,585
Level 3 \| Internal \| Minimum \| Discounted cash flow \| Market risk benefit liabilities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Lapse rate	1.00%	1.00%
Spread over SOFR	0.40%	0.29%
Utilization rate	37.00%	37.00%
Withdrawal rate (greater than maximum range)	78.00%	78.00%
Mortality rate	0.00%	0.00%
Equity volatility curve	15.00%	16.00%
Level 3 \| Internal \| Minimum \| Discounted cash flow \| Policyholders' account balances
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Lapse rate	0.00%	0.00%
Spread over SOFR	0.40%	0.29%
Mortality rate	0.00%	0.00%
Option budget	(2.00%)	(1.00%)
Level 3 \| Internal \| Minimum \| Discounted cash flow \| Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Discount rate	2.15%	2.15%
Level 3 \| Internal \| Minimum \| Discounted cash flow \| Asset-backed securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Discount rate	2.20%	2.30%
Liquidity premium	1.90%
Level 3 \| Internal \| Minimum \| Discounted cash flow \| Commercial mortgage-backed securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Liquidity premium	0.90%	1.00%
Level 3 \| Internal \| Minimum \| Discounted cash flow \| Market risk benefit assets
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Lapse rate	1.00%	1.00%
Spread over SOFR	0.40%	0.29%
Utilization rate	37.00%	37.00%
Withdrawal rate (greater than maximum range)	78.00%	78.00%
Mortality rate	0.00%	0.00%
Equity volatility curve	15.00%	16.00%
Level 3 \| Internal \| Minimum \| Discounted cash flow \| Reinsurance recoverables and deposit receivables
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Lapse rate	0.00%	0.00%
Spread over SOFR	0.40%	0.29%
Option budget	(2.00%)	(1.00%)
Level 3 \| Internal \| Minimum \| Market comparables \| Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
EBITDA multiples		5.0
Level 3 \| Internal \| Minimum \| Liquidation \| Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Liquidation value	28.34%	75.00%
Level 3 \| Internal \| Minimum \| Liquidation \| Receivables from parent and affiliates
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Liquidation value	100.00%	100.00%
Level 3 \| Internal \| Maximum \| Discounted cash flow \| Market risk benefit liabilities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Lapse rate	20.00%	20.00%
Spread over SOFR	1.87%	1.79%
Utilization rate	94.00%	94.00%
Withdrawal rate (greater than maximum range)	100.00%	100.00%
Mortality rate	16.00%	16.00%
Equity volatility curve	25.00%	25.00%
Level 3 \| Internal \| Maximum \| Discounted cash flow \| Policyholders' account balances
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Lapse rate	80.00%	80.00%
Spread over SOFR	1.82%	1.73%
Mortality rate	23.00%	23.00%
Option budget	7.00%	7.00%
Level 3 \| Internal \| Maximum \| Discounted cash flow \| Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Discount rate	20.00%	20.00%
Level 3 \| Internal \| Maximum \| Discounted cash flow \| Asset-backed securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Discount rate	10.75%	10.70%
Liquidity premium	1.90%
Level 3 \| Internal \| Maximum \| Discounted cash flow \| Commercial mortgage-backed securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Liquidity premium	0.90%	1.00%
Level 3 \| Internal \| Maximum \| Discounted cash flow \| Market risk benefit assets
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Lapse rate	20.00%	20.00%
Spread over SOFR	1.87%	1.79%
Utilization rate	94.00%	94.00%
Withdrawal rate (greater than maximum range)	100.00%	100.00%
Mortality rate	16.00%	16.00%
Equity volatility curve	25.00%	25.00%
Level 3 \| Internal \| Maximum \| Discounted cash flow \| Reinsurance recoverables and deposit receivables
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Lapse rate	80.00%	80.00%
Spread over SOFR	1.82%	1.71%
Option budget	7.00%	7.00%
Level 3 \| Internal \| Maximum \| Market comparables \| Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
EBITDA multiples		5.0
Level 3 \| Internal \| Maximum \| Liquidation \| Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Liquidation value	84.21%	75.00%
Level 3 \| Internal \| Maximum \| Liquidation \| Receivables from parent and affiliates
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Liquidation value	100.00%	100.00%
Level 3 \| Internal \| Weighted Average \| Discounted cash flow \| Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Discount rate	10.24%	11.15%
Level 3 \| Internal \| Weighted Average \| Discounted cash flow \| Asset-backed securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Discount rate	4.00%	6.18%
Liquidity premium	1.90%
Level 3 \| Internal \| Weighted Average \| Discounted cash flow \| Commercial mortgage-backed securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Liquidity premium	0.90%	1.00%
Level 3 \| Internal \| Weighted Average \| Market comparables \| Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
EBITDA multiples		5.0
Level 3 \| Internal \| Weighted Average \| Liquidation \| Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Liquidation value	75.70%	75.00%
Level 3 \| Internal \| Weighted Average \| Liquidation \| Receivables from parent and affiliates
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Liquidation value	100.00%	100.00%
Level 3 \| Internal \| Fair Value, Measurements, Recurring \| Market risk benefit liabilities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Market risk benefit liabilities	$ 4,668,492	$ 4,281,244
Level 3 \| Internal \| Fair Value, Measurements, Recurring \| Policyholders' account balances
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Policyholders’ account balances	15,113,285	12,624,585
Level 3 \| Internal \| Fair Value, Measurements, Recurring \| Corporate securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Corporate securities	1,193,033	1,130,627
Level 3 \| Internal \| Fair Value, Measurements, Recurring \| Asset-backed securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Asset backed securities	224,644	90,370
Level 3 \| Internal \| Fair Value, Measurements, Recurring \| Commercial mortgage-backed securities
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Commercial mortgage-backed securities	74,829	75,318
Level 3 \| Internal \| Fair Value, Measurements, Recurring \| Market risk benefit assets
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Market risk benefit assets	2,534,340	2,637,363
Level 3 \| Internal \| Fair Value, Measurements, Recurring \| Reinsurance recoverables and deposit receivables
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Reinsurance recoverables and deposit receivables	722,068	645,193
Level 3 \| Internal \| Fair Value, Measurements, Recurring \| Receivables from parent and affiliates
Fair Value Inputs, Assets and Liabilities, Quantitative Information [Line Items]
Receivables from parent and affiliates	$ 361,254	$ 328,001