v3.25.3
Clearing Operations (Schedule of Derivative Contracts) (Details)
$ in Millions
9 Months Ended
Sep. 30, 2025
USD ($)
contract
Sep. 30, 2024
contract
Clearing Operations [Line Items]    
Market value of derivative contracts | $ $ 1,342  
Total number of derivative contracts cleared (in contracts) | contract 55,697,783 58,897,754
Commodity forwards    
Clearing Operations [Line Items]    
Market value of derivative contracts | $ $ 18  
Commodity and seafood options, futures and forwards    
Clearing Operations [Line Items]    
Total number of derivative contracts cleared (in contracts) | contract 191,088 165,641
Fixed-income swaps, futures and forwards    
Clearing Operations [Line Items]    
Market value of derivative contracts | $ $ 734  
Total number of derivative contracts cleared (in contracts) | contract 14,269,081 14,306,316
Stock options, futures and forwards    
Clearing Operations [Line Items]    
Market value of derivative contracts | $ $ 479  
Total number of derivative contracts cleared (in contracts) | contract 17,875,224 17,592,459
Index options, futures and forwards    
Clearing Operations [Line Items]    
Market value of derivative contracts | $ $ 111  
Total number of derivative contracts cleared (in contracts) | contract 23,362,390 26,833,338