XML 64 R103.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Schedule I - Financial Information of the Registrant (Parent Company) - Additional Information (Details) - USD ($)
9 Months Ended 12 Months Ended
Jan. 01, 2018
Sep. 30, 2019
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Condensed Financial Statements, Captions [Line Items]          
Merger termination fee   $ 50,000,000 $ 50,000,000.0    
Dividends paid by guaranty     0 $ 25,000,000.0 $ 20,000,000.0
Total income tax benefit resulting from the 2017 Act         7,800,000
ASU 2016-01          
Condensed Financial Statements, Captions [Line Items]          
Net unrealized investment gains $ 4,600,000        
Retained Earnings          
Condensed Financial Statements, Captions [Line Items]          
Reclassification of net tax expense from AOCI to retained earning       1,000,000.0  
Retained Earnings | ASU 2018-02          
Condensed Financial Statements, Captions [Line Items]          
Reclassification of net tax expense from AOCI to retained earning       1,000,000.0  
Parent Company          
Condensed Financial Statements, Captions [Line Items]          
Merger termination fee     50,000,000 0 0
Expenses related to Mergers and strategic alternatives review     6,800,000 $ 12,700,000 2,900,000
Executive insurance policy settlement expenses     $ 2,200,000    
Total income tax benefit resulting from the 2017 Act         $ 1,200,000