XML 147 R63.htm IDEA: XBRL DOCUMENT v3.20.1
Investments (Reconciliation Of Available-For-Sale Securities From Cost Basis To Fair Value) (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities    
Amortized cost $ 93,307 $ 91,219
Gross unrealized gains 10,633 3,851
Gross unrealized losses 226 2,326
OTTI [1] (59) (43)
Fair value 103,773 92,787
Fixed Maturity Securities [Member]    
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities    
Amortized cost 93,307  
Fair value 103,773  
Corporate Bonds [Member] | Fixed Maturity Securities [Member]    
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities    
Amortized cost 78,875 78,837
Gross unrealized gains 9,071 2,871
Gross unrealized losses 172 2,167
OTTI [1] (5) (8)
Fair value 87,779 79,549
ABS [Member] | Fixed Maturity Securities [Member]    
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities    
Amortized cost 4,803 2,644
Gross unrealized gains 62 45
Gross unrealized losses 17 30
OTTI [1] (35) (19)
Fair value 4,883 2,678
U.S. Government Bonds [Member] | Fixed Maturity Securities [Member]    
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities    
Amortized cost 355 361
Gross unrealized gains 48 27
Gross unrealized losses   2
Fair value 403 386
Foreign Government Bonds [Member] | Fixed Maturity Securities [Member]    
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities    
Amortized cost 326 402
Gross unrealized gains 62 42
Fair value 388 444
RMBS [Member] | Fixed Maturity Securities [Member]    
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities    
Amortized cost 2,820 3,099
Gross unrealized gains 179 113
Gross unrealized losses 9 61
OTTI [1] (18) (13)
Fair value 3,008 3,164
CMBS [Member] | Fixed Maturity Securities [Member]    
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities    
Amortized cost 1,038 810
Gross unrealized gains 45 6
Gross unrealized losses 1 16
OTTI [1] (1) (3)
Fair value 1,083 803
State And Municipal Bonds [Member] | Fixed Maturity Securities [Member]    
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities    
Amortized cost 4,605 4,498
Gross unrealized gains 1,087 703
Gross unrealized losses 7 17
Fair value 5,685 5,184
Hybrid And Redeemable Preferred Securities [Member] | Fixed Maturity Securities [Member]    
Amortized cost, gross unrealized gains, losses, OTTI and fair value of AFS securities    
Amortized cost 485 568
Gross unrealized gains 79 44
Gross unrealized losses 20 33
Fair value $ 544 $ 579
[1] Includes unrealized (gains) and losses on credit-impaired securities related to changes in the fair value of such securities subsequent to the impairment measurement date.