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Reinsurance and Indemnification - Amounts Ceded to Prudential (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Contract benefits |  |  |
Ceded Credit Risk [Line Items] |  |  |
Reinsurance ceded amount | $ 155 | $ 165 | $ 240
Interest credited to contractholder funds |  |  |
Ceded Credit Risk [Line Items] |  |  |
Reinsurance ceded amount | 27 | 20 | 24
Prudential | Premiums and contract charges | Allstate Financial |  |  |
Ceded Credit Risk [Line Items] |  |  |
Reinsurance ceded amount | 64 | 65 | 72
Prudential | Contract benefits | Allstate Financial |  |  |
Ceded Credit Risk [Line Items] |  |  |
Reinsurance ceded amount | 46 | (4) | 87
Prudential | Interest credited to contractholder funds | Allstate Financial |  |  |
Ceded Credit Risk [Line Items] |  |  |
Reinsurance ceded amount | 20 | 19 | 20
Prudential | Operating costs and expenses | Allstate Financial |  |  |
Ceded Credit Risk [Line Items] |  |  |
Reinsurance ceded amount | $ 12 | $ 12 | $ 14

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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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