XML 39 R28.htm IDEA: XBRL DOCUMENT v3.20.2
Investments (Fixed Maturities Securities Excluding Investments Classified as Trading) (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost $ 5,550,300 $ 5,283,266
Allowance for Credit Losses 4,572  
Fair Value 6,106,322 5,681,970
Fixed maturities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 5,550,300 5,283,266
Gross Unrealized Gains 611,149 422,547
Gross Unrealized Losses 50,555 23,843
Allowance for Credit Losses 4,572  
Fair Value 6,106,322 5,681,970
Fixed maturities | U.S. Treasury securities and obligations of U.S. government authorities and agencies    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 124,521 83,622
Gross Unrealized Gains 3,921 2,846
Gross Unrealized Losses 0 0
Allowance for Credit Losses 0  
Fair Value 128,442 86,468
Fixed maturities | Obligations of U.S. states and their political subdivisions    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 460,917 458,152
Gross Unrealized Gains 51,958 39,675
Gross Unrealized Losses 0 0
Allowance for Credit Losses 0  
Fair Value 512,875 497,827
Fixed maturities | Foreign government bonds    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 190,655 196,034
Gross Unrealized Gains 32,670 26,793
Gross Unrealized Losses 42 1
Allowance for Credit Losses 0  
Fair Value 223,283 222,826
Fixed maturities | U.S. public corporate securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 2,060,742 1,914,503
Gross Unrealized Gains 342,008 229,071
Gross Unrealized Losses 7,976 2,247
Allowance for Credit Losses 0  
Fair Value 2,394,774 2,141,327
Fixed maturities | U.S. private corporate securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 898,457 886,281
Gross Unrealized Gains 70,998 44,497
Gross Unrealized Losses 4,803 1,006
Allowance for Credit Losses 1,899  
Fair Value 962,753 929,772
Fixed maturities | Foreign public corporate securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 225,423 256,843
Gross Unrealized Gains 28,997 22,158
Gross Unrealized Losses 2,762 385
Allowance for Credit Losses 0  
Fair Value 251,658 278,616
Fixed maturities | Foreign private corporate securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 969,193 939,603
Gross Unrealized Gains 40,731 38,426
Gross Unrealized Losses 32,418 19,551
Allowance for Credit Losses 2,673  
Fair Value 974,833 958,478
Fixed maturities | Asset-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 122,786 119,602
Gross Unrealized Gains 658 800
Gross Unrealized Losses 2,554 466
Allowance for Credit Losses 0  
Fair Value 120,890 119,936
Fixed maturities | Commercial mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 437,874 367,848
Gross Unrealized Gains 34,650 15,231
Gross Unrealized Losses 0 163
Allowance for Credit Losses 0  
Fair Value 472,524 382,916
Fixed maturities | Residential mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 59,732 60,778
Gross Unrealized Gains 4,558 3,050
Gross Unrealized Losses 0 24
Allowance for Credit Losses 0  
Fair Value $ 64,290 63,804
OTTI | Fixed maturities    
Debt Securities, Available-for-sale [Line Items]    
OTTI in AOCI   (138)
Net Unrealized Gains (Losses)   1,700
OTTI | Fixed maturities | U.S. Treasury securities and obligations of U.S. government authorities and agencies    
Debt Securities, Available-for-sale [Line Items]    
OTTI in AOCI   0
OTTI | Fixed maturities | Obligations of U.S. states and their political subdivisions    
Debt Securities, Available-for-sale [Line Items]    
OTTI in AOCI   0
OTTI | Fixed maturities | Foreign government bonds    
Debt Securities, Available-for-sale [Line Items]    
OTTI in AOCI   0
OTTI | Fixed maturities | U.S. public corporate securities    
Debt Securities, Available-for-sale [Line Items]    
OTTI in AOCI   0
OTTI | Fixed maturities | U.S. private corporate securities    
Debt Securities, Available-for-sale [Line Items]    
OTTI in AOCI   0
OTTI | Fixed maturities | Foreign public corporate securities    
Debt Securities, Available-for-sale [Line Items]    
OTTI in AOCI   0
OTTI | Fixed maturities | Foreign private corporate securities    
Debt Securities, Available-for-sale [Line Items]    
OTTI in AOCI   0
OTTI | Fixed maturities | Asset-backed securities    
Debt Securities, Available-for-sale [Line Items]    
OTTI in AOCI   (7)
OTTI | Fixed maturities | Commercial mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
OTTI in AOCI   0
OTTI | Fixed maturities | Residential mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
OTTI in AOCI   $ (131)