Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Statement of Comprehensive Income [Abstract]
Net income		$ 507	$ 452	$ 1,026	$ 846
Other comprehensive income (loss):
Foreign currency translation gains (losses)		(57)	(45)	(76)	130
Income tax benefit (expense)	[1]	(7)	67	(25)	98
Foreign currency translation, net		(64)	22	(101)	228
Unrealized gain (loss) on derivatives instruments, net		(3)	5	0	2
Total other comprehensive income (loss), net of tax		(67)	27	(101)	230
Comprehensive income		440	479	925	1,076
Comprehensive loss attributable to noncontrolling interests		0	0	0	1
Comprehensive income attributable to Nasdaq		$ 440	$ 479	$ 925	$ 1,077

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