XML 45 R45.htm IDEA: XBRL DOCUMENT v3.20.1
Investments - Troubled Debt Restructuring (Details)
$ in Millions
12 Months Ended
Dec. 31, 2019
USD ($)
loan
Dec. 31, 2018
loan
Commercial portfolio segment    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Financing Receivable, Modifications, Number of Contracts | loan 1 0
Financing Receivable, Troubled Debt Restructuring, Premodification | $ $ 2  
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ $ 1  
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | loan 1 0
Private Placement    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Financing Receivable, Modifications, Number of Contracts | loan 1 0
Financing Receivable, Troubled Debt Restructuring, Premodification | $ $ 74  
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ $ 38  
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts | loan 0 0