Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income		$ 283,000	$ 298,000
Other comprehensive loss:
Foreign currency translation losses		(68,000)	(114,000)
Income tax expense	[1]	(15,000)	(23,000)
Foreign currency translation, net		(83,000)	(137,000)
Comprehensive income		200,000	161,000
Comprehensive loss attributable to noncontrolling interests		1,000	0
Comprehensive income attributable to Nasdaq		$ 201,000	$ 161,000

[1] Primarily relates to the tax effect of unrealized gains and losses on Euro denominated notes.