Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Millions		Total	Share repurchase program	Total Nasdaq stockholders’ equity	Common stock	Additional paid-in capital	Additional paid-in capital Share repurchase program	Additional paid-in capital ASR agreement		Common stock in treasury, at cost	Accumulated other comprehensive loss	Retained earnings	Noncontrolling interests
Beginning balance (in shares) at Dec. 31, 2020					495,000,000
Beginning balance at Dec. 31, 2020					$ 5	$ 2,544				$ (376)	$ (1,368)	$ 5,628	$ 3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares repurchase program (in shares)							(8,000,000)	(6,000,000)	[1]
Share repurchase program							$ (410)	$ (475)	[1]
Share-based compensation (in shares)						3,000,000
Share-based compensation						$ 66
Stock option exercises, net						$ 1
Other issuances of common stock, net (in shares)	[2]					19,000,000
Other issuances of common stock, net	[2]					$ 254
Other employee stock activity										$ (49)
Other employee stock activity (in shares)										(1,000,000)
Other comprehensive loss											(143)
Net income		$ 928										928
Cash dividends declared per common share												(260)
Net activity related to noncontrolling interests													7
Ending balance (in shares) at Sep. 30, 2021		502,000,000
Ending balance at Sep. 30, 2021		$ 6,355		$ 6,345		1,980				$ (425)	(1,511)	6,296	10
Beginning balance (in shares) at Jun. 30, 2021					508,000,000
Beginning balance at Jun. 30, 2021					$ 5	2,432				(423)	(1,452)	6,098	11
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares repurchase program (in shares)	[1]							(6,000,000)
Share repurchase program	[1]							$ (475)
Share-based compensation						23
Other employee stock activity										(2)
Other comprehensive loss											(59)
Net income		$ 288										288
Cash dividends declared per common share												(90)
Net activity related to noncontrolling interests													(1)
Ending balance (in shares) at Sep. 30, 2021		502,000,000
Ending balance at Sep. 30, 2021		$ 6,355		6,345		1,980				(425)	(1,511)	6,296	10
Beginning balance (in shares) at Dec. 31, 2021					500,000,000
Beginning balance at Dec. 31, 2021		6,405			$ 5	$ 1,949				(437)	(1,587)	6,465	10
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares repurchase program (in shares)			(5,465,595)				(11,000,000)	0	[1]
Share repurchase program			$ (308)				$ (308)	$ (325)	[1]
Share-based compensation (in shares)						3,000,000
Share-based compensation						$ 76
Other issuances of common stock, net	[2]					16
Other employee stock activity										$ (73)
Other employee stock activity (in shares)										(1,000,000)
Other comprehensive loss											(505)
Net income		883										884
Cash dividends declared per common share		$ (285)										(285)
Net activity related to noncontrolling interests													(1)
Ending balance (in shares) at Sep. 30, 2022		491,000,000
Ending balance at Sep. 30, 2022		$ 5,884		5,875		1,408				$ (510)	(2,092)	7,064	9
Beginning balance (in shares) at Jun. 30, 2022					491,000,000
Beginning balance at Jun. 30, 2022					$ 5	1,382				(509)	(1,905)	6,869	9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation						26
Other employee stock activity										(1)
Other comprehensive loss											(187)
Net income		$ 294										294
Cash dividends declared per common share												(99)
Ending balance (in shares) at Sep. 30, 2022		491,000,000
Ending balance at Sep. 30, 2022		$ 5,884		$ 5,875		$ 1,408				$ (510)	$ (2,092)	$ 7,064	$ 9

[1] See “ASR Agreement,” of Note 11, “Nasdaq Stockholders’ Equity,” for further discussion

[2] In 2021, other issuances of common stock primarily related to shares accelerated and issued upon the sale of our U.S. Fixed Income business.