XML 146 R103.htm IDEA: XBRL DOCUMENT v3.25.0.1
Investments - Schedule of Gross Unrealized Losses and Fair Value by Type and Length of Time Held in a Continuous Unrealized Loss Position (Details)
$ in Millions
12 Months Ended
Dec. 31, 2024
USD ($)
Contract
Dec. 31, 2023
USD ($)
Contract
Total unrealized losses    
Fixed income securities $ 52,747 $ 48,865
Fixed income securities    
Less than 12 months    
Number of issues | Contract 2,204 611
Fair value $ 22,824 $ 5,274
Unrealized losses $ (491) $ (91)
12 months or more    
Number of issues | Contract 2,583 4,232
Fair value $ 10,500 $ 23,017
Unrealized losses (739) (1,343)
Total unrealized losses    
Total unrealized losses (1,230) (1,434)
Fixed income securities 16 32
Fixed income securities, unrealized losses 1 3
Fixed income securities, credit loss allowance $ 3 $ 8
U.S. government and agencies    
Less than 12 months    
Number of issues | Contract 179 63
Fair value $ 8,520 $ 2,554
Unrealized losses $ (256) $ (38)
12 months or more    
Number of issues | Contract 99 117
Fair value $ 801 $ 2,513
Unrealized losses (74) (81)
Total unrealized losses    
Total unrealized losses (330) (119)
Fixed income securities $ 11,108 $ 8,619
Municipal    
Less than 12 months    
Number of issues | Contract 990 271
Fair value $ 4,889 $ 400
Unrealized losses $ (67) $ (4)
12 months or more    
Number of issues | Contract 1,089 1,784
Fair value $ 1,693 $ 2,245
Unrealized losses (109) (148)
Total unrealized losses    
Total unrealized losses (176) (152)
Fixed income securities $ 8,842 $ 6,006
Corporate    
Less than 12 months    
Number of issues | Contract 943 251
Fair value $ 9,178 $ 2,225
Unrealized losses $ (166) $ (48)
12 months or more    
Number of issues | Contract 1,237 2,106
Fair value $ 7,877 $ 17,319
Unrealized losses (544) (1,095)
Total unrealized losses    
Total unrealized losses (710) (1,143)
Fixed income securities $ 30,192 $ 31,205
Foreign government    
Less than 12 months    
Number of issues | Contract 42 7
Fair value $ 159 $ 31
Unrealized losses $ (2) $ 0
12 months or more    
Number of issues | Contract 73 75
Fair value $ 73 $ 356
Unrealized losses (8) (13)
Total unrealized losses    
Total unrealized losses (10) (13)
Fixed income securities $ 1,364 $ 1,290
ABS    
Less than 12 months    
Number of issues | Contract 50 19
Fair value $ 78 $ 64
Unrealized losses $ 0 $ (1)
12 months or more    
Number of issues | Contract 85 150
Fair value $ 56 $ 584
Unrealized losses (4) (6)
Total unrealized losses    
Total unrealized losses (4) (7)
Fixed income securities $ 1,241 $ 1,745
Investment grade fixed income securities    
Less than 12 months    
Number of issues | Contract 2,002 568
Fair value $ 21,846 $ 5,061
Unrealized losses $ (473) $ (83)
12 months or more    
Number of issues | Contract 2,367 3,864
Fair value $ 9,281 $ 20,429
Unrealized losses (655) (1,151)
Total unrealized losses    
Total unrealized losses $ (1,128) $ (1,234)
Below investment grade fixed income securities    
Less than 12 months    
Number of issues | Contract 202 43
Fair value $ 978 $ 213
Unrealized losses $ (18) $ (8)
12 months or more    
Number of issues | Contract 216 368
Fair value $ 1,219 $ 2,588
Unrealized losses (84) (192)
Total unrealized losses    
Total unrealized losses $ (102) $ (200)