v3.24.2
Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Income (Loss) (Details) - Reclassifications - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Reclassification Adjustment out of Accumulated Other Comprehensive Income (Loss)        
Reclassification adjustment impacting net realized investment losses on the consolidated statement of income (loss) $ 65 $ 35 $ 30 $ 29
Reclassification adjustment impacting claims and claim adjustment expenses (benefit) on the consolidated statement of income (loss) 7,373 7,227 14,029 13,186
Reclassification adjustment impacting general and administrative expenses (benefit) on the consolidated statement of income (loss) 1,478 1,308 2,884 2,575
Total reclassifications (656) 48 (2,026) (880)
Income tax (expense) benefit (122) 34 (369) 81
Amounts reclassified from accumulated other comprehensive income (loss), net of taxes (534) 14 (1,657) (961)
Accumulated Other Comprehensive Income (Loss) [Member] | Reclassification out of Accumulated Other Comprehensive Income (Loss) [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income (Loss)        
Total reclassifications 33 19 72 27
Income tax (expense) benefit 8 4 16 6
Amounts reclassified from accumulated other comprehensive income (loss), net of taxes 25 15 56 21
Changes in Net Unrealized Gains (Losses) on Investment Securities Having No Credit Losses Recognized in the Consolidated Statement of Income (Loss) [Member] | Reclassification out of Accumulated Other Comprehensive Income (Loss) [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income (Loss)        
Reclassification adjustment impacting net realized investment losses on the consolidated statement of income (loss) 35 22 75 33
Income tax (expense) benefit 8 5 16 7
Amounts reclassified from accumulated other comprehensive income (loss), net of taxes 27 17 59 26
Changes in Net Unrealized Gains (Losses) on Investment Securities Having Credit Losses Recognized in the Consolidated Statement of Income (Loss) [Member] | Reclassification out of Accumulated Other Comprehensive Income (Loss) [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income (Loss)        
Reclassification adjustment impacting net realized investment losses on the consolidated statement of income (loss) 0 0 0 0
Income tax (expense) benefit 0 0 0 0
Amounts reclassified from accumulated other comprehensive income (loss), net of taxes 0 0 0 0
Net Benefit Plan Assets and Obligations Recognized in Shareholders' Equity [Member] | Reclassification out of Accumulated Other Comprehensive Income (Loss) [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income (Loss)        
Reclassification adjustment impacting claims and claim adjustment expenses (benefit) on the consolidated statement of income (loss) (1) (1) (1) (2)
Reclassification adjustment impacting general and administrative expenses (benefit) on the consolidated statement of income (loss) (1) (2) (2) (4)
Total reclassifications (2) (3) (3) (6)
Income tax (expense) benefit 0 (1) 0 (1)
Amounts reclassified from accumulated other comprehensive income (loss), net of taxes (2) (2) (3) (5)
Net Unrealized Foreign Currency Translation [Member] | Reclassification out of Accumulated Other Comprehensive Income (Loss) [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income (Loss)        
Reclassification adjustment impacting net realized investment losses on the consolidated statement of income (loss) 0 0 0 0
Income tax (expense) benefit 0 0 0 0
Amounts reclassified from accumulated other comprehensive income (loss), net of taxes $ 0 $ 0 $ 0 $ 0