v3.25.4
Income Taxes - Effective Tax Rate Reconciliation (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
Statutory tax rate 21.00% 21.00% 21.00%
Effect of foreign operations   7.60% 8.00%
U.S. tax credits   (5.40%) (3.10%)
Stock-based compensation   (1.20%) (1.00%)
Non-deductible expenses 9.80% 1.10% 0.70%
Tax law changes and related structuring   (0.30%) (3.80%)
Tax audits, settlements and reserves   (51.40%) (1.10%)
Acquisition costs   13.40% 0.20%
All other, net (0.70%) (0.10%) 1.10%
Effective tax rate 35.80% (15.30%) 22.00%
Effective Income Tax Rate Reconciliation [Line Items]      
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount $ 1,385    
Statutory tax rate 21.00% 21.00% 21.00%
Effect of foreign operations   7.60% 8.00%
Effective Income Tax Rate Reconciliation, GILTI, Percent 16.90%    
Effective Income Tax Rate Reconciliation, GILTI, Amount $ 1,114    
Effective Income Tax Rate Reconciliation, U.S. tax impact of branch accounting, net of FTC, Percent (2.30%)    
U.S. tax impact of branch accounting, net of FTC $ (149)    
Effective Income Tax Rate Reconciliation, Cross-Border, Other, Percent 1.50%    
Effective Income Tax Rate Reconciliation, Cross-Border, Other, Amount $ 99    
Effective Income Tax Rate Reconciliation, Tax Credit, Percent (2.20%)    
Effective Income Tax Rate Reconciliation, Tax Credit, Amount $ (142)    
Effective Income Tax Rate Reconciliation, Tax Contingency, Percent 9.90%    
Effective Income Tax Rate Reconciliation, Tax Contingency, Amount $ 654    
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent (1.40%)    
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount $ (94)    
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount $ 649    
All other, net (0.70%) (0.10%) 1.10%
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount $ (45)    
Effective Income Tax Rate Reconciliation, Percent 35.80% (15.30%) 22.00%
Total income tax expense (benefit) $ 2,364 $ (570) $ 1,377
Non-deductible expenses 9.80% 1.10% 0.70%
PUERTO RICO      
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
Effect of foreign operations 21.60%    
All other, net (0.30%)    
Effective Income Tax Rate Reconciliation [Line Items]      
Effect of foreign operations 21.60%    
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount $ 1,426    
Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Percent (45.30%)    
Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Amount $ (2,989)    
All other, net (0.30%)    
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount $ (23)    
BERMUDA      
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
Effect of foreign operations 1.60%    
All other, net (0.20%)    
Effective Income Tax Rate Reconciliation [Line Items]      
Effect of foreign operations 1.60%    
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount $ 104    
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent 4.30%    
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount $ 286    
All other, net (0.20%)    
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount $ (14)    
IRELAND      
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
Effect of foreign operations (1.70%)    
All other, net (0.10%)    
Effective Income Tax Rate Reconciliation [Line Items]      
Effect of foreign operations (1.70%)    
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount $ (115)    
Effective Income Tax Rate Reconciliation, Net Operating Loss Utilization,, Percent 1.50%    
Effective Income Tax Rate Reconciliation, Net Operating Loss Utilization, Amount $ 101    
All other, net (0.10%)    
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount $ (7)    
MALTA      
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
Effect of foreign operations (1.80%)    
Non-deductible expenses 3.70%    
All other, net 0.50%    
Effective Income Tax Rate Reconciliation [Line Items]      
Effect of foreign operations (1.80%)    
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount $ (118)    
Effective Income Tax Rate Reconciliation, Deduction, Amount $ (128)    
Effective Income Tax Rate Reconciliation, Deduction, Percent (1.90%)    
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount $ 241    
All other, net 0.50%    
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount $ 35    
Non-deductible expenses 3.70%    
Foreign Tax Jurisdiction, Other      
Effective Income Tax Rate Reconciliation, Percent [Abstract]      
Effect of foreign operations 1.40%    
Effective Income Tax Rate Reconciliation [Line Items]      
Effect of foreign operations 1.40%    
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount $ 94