v3.25.4

Revenue Recognition - Narrative (Details)	12 Months Ended
	Dec. 31, 2025 USD ($) obligation	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Disaggregation of Revenue [Line Items]
Number of performance obligations | obligation	2
Rebates	$ 1,600,000,000	$ 1,300,000,000	$ 928,000,000
Number of performance obligations related to trade execution | obligation	1
Contract assets	$ 89,000,000	87,000,000
Cash Equities and Equity Options
Disaggregation of Revenue [Line Items]
Rebates	61,000,000	40,000,000	61,000,000
Transaction Price
Disaggregation of Revenue [Line Items]
Performance obligation	$ 3,400,000,000
Transaction Price | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Disaggregation of Revenue [Line Items]
Period of recognition of performance obligations	1 year
Performance obligation percentage	37.00%
Transaction Price | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Disaggregation of Revenue [Line Items]
Period of recognition of performance obligations	2 years
Performance obligation percentage	81.00%
Transaction Price | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2029-01-01
Disaggregation of Revenue [Line Items]
Period of recognition of performance obligations	2 years
Performance obligation percentage	96.00%
Mortgage Technology | Servicing software | Minimum
Disaggregation of Revenue [Line Items]
Description of timing	five
Mortgage Technology | Servicing software | Maximum
Disaggregation of Revenue [Line Items]
Description of timing	seven years
Mortgage Technology | Origination technology | Minimum
Disaggregation of Revenue [Line Items]
Description of timing	one year
Mortgage Technology | Origination technology | Maximum
Disaggregation of Revenue [Line Items]
Description of timing	five years
Fixed Income and Data Services
Disaggregation of Revenue [Line Items]
Rebates	$ 8,000,000	7,000,000	$ 5,000,000
Fixed Income and Data Services | CDS clearing
Disaggregation of Revenue [Line Items]
Rebates	$ 10,000,000	$ 0
Fixed Income and Data Services | Risk management of open interest performance obligations in our CDS business | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01 | Services transferred over time
Disaggregation of Revenue [Line Items]
Period of recognition of performance obligations	1 month

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