Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2025

Earnings Per Share [Abstract]

Summary of Basic and Diluted (Net Loss) Earnings Per Share

Basic and diluted (net loss) earnings per share are as follows (in millions, except for share and per share amounts):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2025		2024		2025		2024
Basic and diluted (net loss) earnings per share:
Numerator
Net Income (Loss) From Continuing Operations	$	(1,055)	$	(44)	$	(2,145)	$	(169)
Less: Net income (loss) attributable to noncontrolling interest	1		—		2		2
Net Income (loss) from continuing operations attributable to Alight, Inc.	$	(1,054)	$	(44)	$	(2,143)	$	(167)
Net Income (Loss) From Discontinued Operations, Net of Tax	(13)		(30)		(22)		2
Net Income (Loss) Attributable to Alight, Inc. - basic	$	(1,067)	$	(74)	$	(2,165)	$	(165)
Loss impact of conversion of noncontrolling interest	—		—		—		(1)
Net income (loss) attributable to Alight, Inc. - diluted	$	(1,067)	$	(74)	$	(2,165)	$	(166)
Denominator
Weighted-average shares outstanding - basic	526,576,757		535,828,896		529,206,657		545,659,335
Dilutive effect of the exchange of noncontrolling interest units	—		—		—		560,433
Dilutive effect of RSUs	—		—		—		—
Weighted-average shares outstanding - diluted	526,576,757		535,828,896		529,206,657		546,219,768
Basic and Diluted (net loss) earnings per share
Continuing operations	$	(2.00)	$	(0.08)	$	(4.05)	$	(0.31)
Discontinued operations	$	(0.02)	$	(0.06)	$	(0.04)	$	0.00
Net Income (Loss)	$	(2.02)	$	(0.14)	$	(4.09)	$	(0.31)