Organization and Nature of Operations (Details) $ in Billions	9 Months Ended
	Sep. 30, 2025 USD ($) exchange company segment financialInstitution exchangeTradedProduct country
Organization And Basis Of Presentation [Line Items]
Number of operating segments (in segments) \| segment	3
Capital Access Platforms:
Organization And Basis Of Presentation [Line Items]
Total number of listed companies within Nordic and Baltic exchanges (in companies) \| company	5,492
Number of exchange traded products licensed to Nasdaq's indexes (in exchange traded products) \| exchangeTradedProduct	439
Number of equity exchanges (in exchanges) \| exchange	29
Number of countries services are provided (in countries) \| country	20
Assets management value \| $	$ 829
Market Services
Organization And Basis Of Presentation [Line Items]
Number of equity exchanges (in exchanges) \| exchange	19
Financial Technology \| Financial Crime Management Technology
Organization And Basis Of Presentation [Line Items]
Number of financial institution \| financialInstitution	2,700
United States \| Capital Access Platforms:
Organization And Basis Of Presentation [Line Items]
Total number of listings on The Nasdaq Stock Market (in companies) \| company	4,359
ETPs and other listings listed on Nasdaq Stock Market (in companies) \| exchangeTradedProduct	1,000
Approximate combined market capitalization \| $	$ 38,600
Europe \| Capital Access Platforms:
Organization And Basis Of Presentation [Line Items]
Total number of listed companies within Nordic and Baltic exchanges (in companies) \| company	1,133
Approximate combined market capitalization \| $	$ 2,200