XML 70 R59.htm IDEA: XBRL DOCUMENT v3.24.3
Shareholders' Equity - Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2022
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]          
Balance at beginning of period $ 17,201 $ 15,470 $ 16,525 $ 15,201  
Other comprehensive income (loss) before reclassifications, after tax 679 (352) 757 (226)  
Reclassification of losses from accumulated other comprehensive loss, after tax 25 69 72 123  
Other comprehensive income (loss) 704 (283) 829 (103)  
Amounts attributable to noncontrolling interests (59) 31 (70) 11  
Purchase of CNA shares/ Other   (61) 0 (61)  
Balance at end of period 18,248 15,158 18,248 15,158  
Cumulative Effect, Period of Adoption, Adjustment          
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]          
Balance at beginning of period       (277)  
As Reported          
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]          
Balance at beginning of period       15,478  
Net Unrealized Gains (Losses) on Investments with an Allowance for Credit Losses          
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]          
Balance at beginning of period (10) (16) (12) (7)  
Other comprehensive income (loss) before reclassifications, after tax (9) (9) (14) (25)  
Reclassification of losses from accumulated other comprehensive loss, after tax 6 8 13 15  
Other comprehensive income (loss) (3) (1) (1) (10)  
Amounts attributable to noncontrolling interests 1 1  
Purchase of CNA shares/ Other    
Balance at end of period (13) (16) (13) (16)  
Other comprehensive income (loss) before reclassifications, tax 3 3 4 7  
Reclassification of losses from accumulated other comprehensive loss, tax (2) (2) (4) (4)  
Net Unrealized Gains (Losses) on Investments with an Allowance for Credit Losses | Cumulative Effect, Period of Adoption, Adjustment          
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]          
Balance at beginning of period        
Cumulative effect adjustments from changes in accounting standards, tax         $ 0
Net Unrealized Gains (Losses) on Investments with an Allowance for Credit Losses | As Reported          
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]          
Balance at beginning of period       (7)  
Net Unrealized Gains (Losses) on Other Investments          
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]          
Balance at beginning of period (1,903) (2,238) (1,483) (2,469)  
Other comprehensive income (loss) before reclassifications, after tax 1,253 (1,105) 764 (880)  
Reclassification of losses from accumulated other comprehensive loss, after tax 11 21 39 53  
Other comprehensive income (loss) 1,264 (1,084) 803 (827)  
Amounts attributable to noncontrolling interests (105) 95 (67) 69  
Purchase of CNA shares/ Other   (46) 3 (46)  
Balance at end of period (744) (3,273) (744) (3,273)  
Other comprehensive income (loss) before reclassifications, tax (337) 295 (206) 235  
Reclassification of losses from accumulated other comprehensive loss, tax (3) (6) (10) (14)  
Net Unrealized Gains (Losses) on Other Investments | Cumulative Effect, Period of Adoption, Adjustment          
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]          
Balance at beginning of period        
Cumulative effect adjustments from changes in accounting standards, tax         0
Net Unrealized Gains (Losses) on Other Investments | As Reported          
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]          
Balance at beginning of period       (2,469)  
Cumulative impact of changes in discount rates used to measure long duration contracts          
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]          
Balance at beginning of period 234 (163) (329) (36)  
Other comprehensive income (loss) before reclassifications, after tax (623) 818 (9) 678  
Reclassification of losses from accumulated other comprehensive loss, after tax  
Other comprehensive income (loss) (623) 818 (9) 678  
Amounts attributable to noncontrolling interests 52 (69) 1 (56)  
Purchase of CNA shares/ Other   (1) (1)  
Balance at end of period (337) 585 (337) 585  
Other comprehensive income (loss) before reclassifications, tax 165 (217) 2 (180)  
Reclassification of losses from accumulated other comprehensive loss, tax 0 0 0 0  
Cumulative impact of changes in discount rates used to measure long duration contracts | Cumulative Effect, Period of Adoption, Adjustment          
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]          
Balance at beginning of period       (36)  
Cumulative effect adjustments from changes in accounting standards, tax         11
Cumulative impact of changes in discount rates used to measure long duration contracts | As Reported          
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]          
Balance at beginning of period       0  
Unrealized Gains (Losses) on Cash Flow Hedges          
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]          
Balance at beginning of period 10 20 9 14  
Other comprehensive income (loss) before reclassifications, after tax (7) (1) (6) 5  
Reclassification of losses from accumulated other comprehensive loss, after tax  
Other comprehensive income (loss) (7) (1) (6) 5  
Amounts attributable to noncontrolling interests  
Purchase of CNA shares/ Other    
Balance at end of period 3 19 3 19  
Other comprehensive income (loss) before reclassifications, tax 3 (2) 3 (1)  
Reclassification of losses from accumulated other comprehensive loss, tax 0 0 0 0  
Unrealized Gains (Losses) on Cash Flow Hedges | Cumulative Effect, Period of Adoption, Adjustment          
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]          
Balance at beginning of period        
Cumulative effect adjustments from changes in accounting standards, tax         0
Unrealized Gains (Losses) on Cash Flow Hedges | As Reported          
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]          
Balance at beginning of period       14  
Pension and Postretirement Benefits          
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]          
Balance at beginning of period (525) (609) (533) (622)  
Other comprehensive income (loss) before reclassifications, after tax 1 1  
Reclassification of losses from accumulated other comprehensive loss, after tax 8 40 20 55  
Other comprehensive income (loss) 9 40 21 55  
Amounts attributable to noncontrolling interests (1) (1) (2) (3)  
Purchase of CNA shares/ Other   (10) (3) (10)  
Balance at end of period (517) (580) (517) (580)  
Other comprehensive income (loss) before reclassifications, tax 0 0 0 0  
Reclassification of losses from accumulated other comprehensive loss, tax (3) (11) (5) (15)  
Pension and Postretirement Benefits | Cumulative Effect, Period of Adoption, Adjustment          
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]          
Balance at beginning of period        
Cumulative effect adjustments from changes in accounting standards, tax         0
Pension and Postretirement Benefits | As Reported          
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]          
Balance at beginning of period       (622)  
Foreign Currency Translation          
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]          
Balance at beginning of period (189) (154) (149) (200)  
Other comprehensive income (loss) before reclassifications, after tax 64 (55) 21 (4)  
Reclassification of losses from accumulated other comprehensive loss, after tax  
Other comprehensive income (loss) 64 (55) 21 (4)  
Amounts attributable to noncontrolling interests (5) 5 (2)  
Purchase of CNA shares/ Other   (4) (4)  
Balance at end of period (130) (208) (130) (208)  
Other comprehensive income (loss) before reclassifications, tax 0 0 0 0  
Reclassification of losses from accumulated other comprehensive loss, tax 0 0 0 0  
Foreign Currency Translation | Cumulative Effect, Period of Adoption, Adjustment          
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]          
Balance at beginning of period        
Cumulative effect adjustments from changes in accounting standards, tax         $ 0
Foreign Currency Translation | As Reported          
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]          
Balance at beginning of period       (200)  
Total Accumulated Other Comprehensive Income (Loss)          
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]          
Balance at beginning of period (2,383) (3,160) (2,497) (3,320)  
Balance at end of period $ (1,738) $ (3,473) $ (1,738) (3,473)  
Total Accumulated Other Comprehensive Income (Loss) | Cumulative Effect, Period of Adoption, Adjustment          
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]          
Balance at beginning of period       (36)  
Total Accumulated Other Comprehensive Income (Loss) | As Reported          
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]          
Balance at beginning of period       $ (3,284)