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Statutory Financial Information and Dividend Limitations - Narrative (Details) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Dividend Limitations |  |
Action level RBC expressed as a multiplier of authorized control level RBC, which if not achieved would require specific actions to be taken | 2 |
Capital and surplus | $ 18,630 | $ 16,819
Restricted net assets | 26,000 |
Allstate Insurance Company |  |
Dividend Limitations |  |
Dividends paid | 1,560 |
Maximum amount of dividends without prior approval | $ 2,870 |
Advance notice period required for payment of dividend in excess of amount available for distribution without prior approval | 30 days |
Unassigned surplus excluding unrealized appreciation from investments | $ 11,040 |
Capital and surplus | 17,700 |
Authorized control level RBC | $ 2,800 |

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- Definition Represents the advance notice period required for payment of dividend in excess of amount available for distribution without prior approval of regulatory agencies. + References No definition available. + Details
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- Definition Amount of authorized control level risk based capital (RBC) as of the balance sheet date under prescribed or permitted statutory accounting practices. + References No definition available. + Details
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- Definition Represents the multiplier of authorized control level risk based capital to determine action level risk based capital. + References No definition available. + Details
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- Definition Amount of restricted net assets of consolidated and unconsolidated subsidiaries as of the end of the most recently completed fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(e)(3)(ii)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
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- Definition Amount of dividends that can be declared or paid without approval of regulatory agency. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(e)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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