Reinsurance (Narrative) (Details) - Athene Holding Ltd. [Member] $ in Millions	Mar. 31, 2019 USD ($)
Athene Holding Ltd. [Member]
Ceded Credit Risk [Line Items]
Reserves associated with modified coinsurance reinsurance arrangements	$ 237
Letter of credit	219
AFS Securities [Member]
Ceded Credit Risk [Line Items]
Deposit assets	5,100
Trading Securities [Member]
Ceded Credit Risk [Line Items]
Deposit assets	1,900
Equity Securities [Member]
Ceded Credit Risk [Line Items]
Deposit assets	49
Commercial Loan [Member]
Ceded Credit Risk [Line Items]
Deposit assets	186
Derivative Instruments [Member]
Ceded Credit Risk [Line Items]
Deposit assets	120
Other Investments [Member]
Ceded Credit Risk [Line Items]
Deposit assets	85
Cash [Member]
Ceded Credit Risk [Line Items]
Deposit assets	$ 78

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

No definition available.

+ Details

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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.

+ 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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.8,17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

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

+ References

No definition available.

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