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Reinsurance and Indemnification - Amounts Ceded to Prudential (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Contract benefits |  |  |
Ceded Credit Risk [Line Items] |  |  |
Reinsurance ceded amount | $ 165 | $ 240 | $ 179
Interest credited to contractholder funds |  |  |
Ceded Credit Risk [Line Items] |  |  |
Reinsurance ceded amount | 20 | 24 | 25
Prudential | Premiums and contract charges | Allstate Financial |  |  |
Ceded Credit Risk [Line Items] |  |  |
Reinsurance ceded amount | 65 | 72 | 76
Prudential | Contract benefits | Allstate Financial |  |  |
Ceded Credit Risk [Line Items] |  |  |
Reinsurance ceded amount | 4 | 87 | 7
Prudential | Interest credited to contractholder funds | Allstate Financial |  |  |
Ceded Credit Risk [Line Items] |  |  |
Reinsurance ceded amount | 19 | 20 | 20
Prudential | Operating costs and expenses | Allstate Financial |  |  |
Ceded Credit Risk [Line Items] |  |  |
Reinsurance ceded amount | $ 12 | $ 14 | $ 15

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- Definition Represents the amount of reinsurance ceded under various contracts. + References 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. + Details
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- Details
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- Details
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- Details
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- Details
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