XML 152 R135.htm IDEA: XBRL DOCUMENT v3.10.0.1
Fair Value Measurements - Instruments not Carried at Fair Value (Details) - USD ($)
$ in Millions
Dec. 31, 2018
Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Loans to Policyholders at Unpaid Principal $ 300.6 $ 298.6
Loans Receivable, Fair Value Disclosure 542.6 560.3
Short-term Investments at Cost which Approximates Fair Value 286.1 235.5
Cash and Cash Equivalents, Fair Value Disclosure 286.1 235.5
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2018 - $911.2; 2017 - $614.6) 909.0 592.3
Long-term Debt, Fair Value 911.2 614.6
Federal Home Loan Bank of Chicago [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Federal Home Loan Bank Advances   0.0
Federal Home Loan Bank Borrowings, Fair Value Disclosure $ 10.0 $ 0.0