Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2021

Earnings Per Share [Abstract]

Summary of Basic and Diluted Earnings Per Share

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

	Successor
	Six Months Ended
	December 31,
	2021
Basic and diluted net loss per share:
Numerator
Net loss attributable to Alight, Inc. - basic and diluted	$	(35	)
Denominator
Weighted average shares outstanding - basic and diluted		439,800,624
Basic and diluted net loss per share	$	(0.08	)