Reinsurance (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Ceded Credit Risk [Line Items]
Maximum retention per single insured life on fixed and VUL insurance contracts	$ 20.0
Percent of mortality risk reinsured on newly issued non-term life insurance contracts	25.00%
Reinsurance recoverables	$ 17,144.0	$ 17,748.0
Funds withheld reinsurance liabilities	1,810.0	1,740.0
Swiss Re [Member]
Ceded Credit Risk [Line Items]
Reinsurance receivable	1,300.0	1,500.0
Trust funded by Swiss Re to support reinsurance receivable	2,700.0
Liabilities for reinsurance related embedded derivatives	31.0
Funds withheld reinsurance liabilities	164.0
Protective [Member]
Ceded Credit Risk [Line Items]
Reinsurance recoverables	11,800.0	12,100.0
Trust funded by Swiss Re to support reinsurance receivable	14,700.0	13,700.0
Athene Holding Ltd. [Member]
Ceded Credit Risk [Line Items]
Amount of amortization, after-tax, of deferred gain on business sold	30.0	8.0
Deposit assets	6,600.0	$ 7,500.0
Reserves associated with modified coinsurance reinsurance arrangements	6,900.0
Letter of credit	200.0
Athene Holding Ltd. [Member] \| Over-Collateralization [Member]
Ceded Credit Risk [Line Items]
Reserves associated with modified coinsurance reinsurance arrangements	201.0
Athene Holding Ltd. [Member] \| Trading Securities [Member]
Ceded Credit Risk [Line Items]
Deposit assets	3,500.0
Athene Holding Ltd. [Member] \| AFS Securities [Member]
Ceded Credit Risk [Line Items]
Deposit assets	2,300.0
Athene Holding Ltd. [Member] \| Equity Securities [Member]
Ceded Credit Risk [Line Items]
Deposit assets	14.0
Athene Holding Ltd. [Member] \| Commercial Mortgage Loans [Member]
Ceded Credit Risk [Line Items]
Deposit assets	698.0
Athene Holding Ltd. [Member] \| Derivative Instruments [Member]
Ceded Credit Risk [Line Items]
Deposit assets	130.0
Athene Holding Ltd. [Member] \| Other Investments [Member]
Ceded Credit Risk [Line Items]
Deposit assets	94.0
Athene Holding Ltd. [Member] \| Cash [Member]
Ceded Credit Risk [Line Items]
Deposit assets	62.0
Athene Holding Ltd. [Member] \| Investment Income [Member]
Ceded Credit Risk [Line Items]
Deposit assets	$ 57.0

Amount, after-tax, of deferred gain on business sold through reinsurance amortized into income during the period.

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- Definition

Maximum amount retained per single insured life issued on fixed and VUL insurance contracts.

+ References

No definition available.

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- Definition

Disclosure of the percentage of mortality risk that is reinsured on newly issued non-term life insurance contracts.

+ References

No definition available.

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- Definition

Embedded derivatives within certain modified coinsurance and coinsurance with funds withheld reinsurance arrangements related to the withheld assets of the related funds.

+ References

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- Definition

The amount of reserves associated with modified coinsurance reinsurance arrangements for portions of the Company's deferred annuity business.

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- Definition

Funds held in trust by the reinsurer to support the sale of the Entity's reinsurance business through an indemnity reinsurance agreement.

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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.

+ References

No definition available.

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- Definition

The carrying amount of the asset transferred to a third party to serve as a deposit, which typically serves as security against failure by the transferor to perform under terms of an agreement.

+ References

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Amount of funds held as security for payments to be received under reinsurance contracts.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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The sum for all reinsurance arrangements of the known and estimated amount recoverable as of the balance sheet date from a given reinsurer for claims paid or incurred by the ceding insurer and associated claims settlement expenses for each reinsurance arrangement (or, the sum of all cases determined individually, probably applying different assumptions to each arrangement).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Amount, after valuation allowance, recoverable under reinsurance contracts including premium paid under reinsurance contracts. Examples include, but are not limited to, settled and unsettled claims, incurred but not reported losses, loss adjustment expense, premium paid, policy benefits and policy reserves.

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