Earnings Per Share (Tables)

6 Months Ended

Jun. 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 June 30,				Six Months Ended June 30,
	2025		2024		2025		2024
Basic and diluted (net loss) earnings per share:
Numerator
Net Income (Loss) From Continuing Operations	$	(1,073)	$	(4)	$	(1,090)	$	(125)
Less: Net income (loss) attributable to noncontrolling interest	1		—		1		2
Net Income (loss) from continuing operations attributable to Alight, Inc.	$	(1,072)	$	(4)	$	(1,089)	$	(123)
Net Income (Loss) From Discontinued Operations, Net of Tax	(1)		27		(9)		32
Net Income (Loss) Attributable to Alight, Inc. - basic	$	(1,073)	$	23	$	(1,098)	$	(91)
Loss impact of conversion of noncontrolling interest	—		—		—		(1)
Net income (loss) attributable to Alight, Inc. - diluted	$	(1,073)	$	23	$	(1,098)	$	(92)
Denominator
Weighted-average shares outstanding - basic	528,469,912		546,174,400		530,378,798		543,376,024
Dilutive effect of the exchange of noncontrolling interest units	—		554,568		—		554,568
Dilutive effect of RSUs	—		374,688		—		—
Weighted-average shares outstanding - diluted	528,469,912		547,103,656		530,378,798		543,930,592
Basic and Diluted (net loss) earnings per share
Continuing operations	$	(2.03)	$	(0.01)	$	(2.05)	$	(0.23)
Discontinued operations	$	0.00	$	0.05	$	(0.02)	$	0.06
Net Income (Loss)	$	(2.03)	$	0.04	$	(2.07)	$	(0.17)