XML 198 R171.htm IDEA: XBRL DOCUMENT v3.8.0.1
Schedule II - Condensed Financial Information of Registrant - Narrative (Details) - USD ($)
12 Months Ended
Dec. 20, 2017
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 11, 2017
Condensed Financial Information of Registrant          
Interest paid on debt   $ 332,000,000 $ 287,000,000 $ 289,000,000  
Allstate Corporation          
Condensed Financial Information of Registrant          
Notes due to subsidiaries   250,000,000 0    
Repayment of notes due to subsidiaries   50,000,000 0 0  
Interest paid on debt   $ 331,000,000 $ 287,000,000 $ 289,000,000  
Kennett Capital Inc | Notes Due 2018 at 1.59 Percent, Note One | Subsidiaries | Allstate Corporation          
Condensed Financial Information of Registrant          
Notes due to subsidiaries         $ 125,000,000
Note stated interest rate (as a percent)         1.59%
Allstate Non-Insurance Holdings Inc | Notes Due 2018 at 1.59 Percent, Note Two | Subsidiaries | Allstate Corporation          
Condensed Financial Information of Registrant          
Notes due to subsidiaries         $ 175,000,000
Repayment of notes due to subsidiaries $ 50,000,000