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	[1]	Common stock in treasury, at cost	Accumulated other comprehensive loss	Retained earnings	Noncontrolling interests
Beginning balance (in shares) at Dec. 31, 2020				165,000,000
Beginning balance at Dec. 31, 2020				$ 2	$ 2,547				$ (376)	$ (1,368)	$ 5,628	$ 3
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares repurchase program (in shares)						(1,000,000)
Share repurchase program						$ (162)
Share-based compensation (in shares)					1,000,000
Share-based compensation					$ 19
Stock option exercises, net					1
Other employee stock activity (in shares)									(1,000,000)
Other employee stock activity									$ (39)
Other comprehensive loss										(137)
Net income	$ 298										298
Cash dividends declared per common share											(81)
Net activity related to noncontrolling interests												(1)
Ending balance (in shares) at Mar. 31, 2021	164,000,000
Ending balance at Mar. 31, 2021	$ 6,334		$ 6,332		2,405				(415)	(1,505)	5,845	2
Beginning balance (in shares) at Dec. 31, 2021				167,000,000
Beginning balance at Dec. 31, 2021	6,405			$ 2	$ 1,952				(437)	(1,587)	6,465	10
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares repurchase program (in shares)		(735,865)				(1,000,000)	(2,000,000)
Share repurchase program		$ (142)				$ (142)	$ (325)
Share-based compensation (in shares)					1,000,000
Share-based compensation					$ 25
Other employee stock activity									(52)
Other comprehensive loss										(83)
Net income	$ 283										284
Cash dividends declared per common share											(89)
Net activity related to noncontrolling interests												(1)
Ending balance (in shares) at Mar. 31, 2022	165,000,000
Ending balance at Mar. 31, 2022	$ 6,022		$ 6,013		$ 1,510				$ (489)	$ (1,670)	$ 6,660	$ 9

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