XML 37 R75.htm IDEA: XBRL DOCUMENT v3.19.3
Investments (Evaluation of Available-For-Sale Securities for OTTI and Evaluating Temporarily Impaired AFS Securities - Narrative) (Details)
$ in Millions
9 Months Ended
Sep. 30, 2019
USD ($)
Contracts
Debt Securities, Available-for-sale [Line Items]  
Debt Securities Available For Sale With Gross Unrealized Loss Of Equal To Or Greater Than Stated Percentage 20.00%
Fixed Maturity Securities  
Debt Securities, Available-for-sale [Line Items]  
Change in Gross Unrealized Temporary Loss $ (3,900)
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss 2,000
20% or more | Six months or greater | Fixed Maturity Securities  
Debt Securities, Available-for-sale [Line Items]  
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss $ 176
Number of Securities | Contracts 51
Investment Grade | 20% or more | Six months or greater | Fixed Maturity Securities  
Debt Securities, Available-for-sale [Line Items]  
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss $ 101
Number of Securities | Contracts 17
Percentage of gross unrealized loss 57.00%
Below Investment Grade | 20% or more | Six months or greater | Fixed Maturity Securities  
Debt Securities, Available-for-sale [Line Items]  
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss $ 75
Number of Securities | Contracts 34
Percentage of gross unrealized loss 43.00%