v3.26.1
Debt - Narrative (Details) - USD ($)
6 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Line of Credit Facility [Line Items]    
Other short-term debt $ 1,218,000,000 $ 1,035,000,000
India Subsidiaries    
Line of Credit Facility [Line Items]    
Maximum borrowing capacity 14,000,000  
Amount of debt outstanding 0  
Revolving Credit Facility    
Line of Credit Facility [Line Items]    
Maximum borrowing capacity 3,900,000,000  
Additional borrowing capacity 1,000,000,000.0  
Amount of debt outstanding 0  
Currently available for borrowing 3,900,000,000  
Amount required to stop broker-dealer subsidiary commitments 168,000,000  
Funds available to use for working capital and general and corporate purposes $ 2,500,000,000  
Revolving Credit Facility | Commercial Paper    
Line of Credit Facility [Line Items]    
Weighted average interest rate 4.00%  
Other short-term debt $ 1,200,000,000  
Borrowings of commercial paper $ 183,000,000  
Weighted average remaining maturity 24 days  
Revolving Credit Facility | Commercial Paper | Minimum    
Line of Credit Facility [Line Items]    
Debt instrument, term 1 year  
Revolving Credit Facility | Commercial Paper | Maximum    
Line of Credit Facility [Line Items]    
Debt instrument, term 28 years  
Senior Notes    
Line of Credit Facility [Line Items]    
Debt instrument, face amount $ 18,600,000,000  
Debt instrument, term 13 years  
Weighted average interest rate 3.70%