Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Dec. 31, 2022
Current Assets
Cash and cash equivalents	$ 256	$ 324
Receivables, net	393	435
Other current assets	217	260
Fiduciary assets	250	234
Current assets held for sale	2,501	1,523
Total Current Assets	3,617	2,776
Goodwill	3,212	3,212
Intangible assets, net	3,066	3,136
Fixed assets, net	387	331
Deferred tax assets, net	86	38
Other assets	346	341
Long-term assets held for sale		948
Total Assets	10,714	10,782
Current Liabilities
Accounts payable and accrued liabilities	278	325
Current portion of long-term debt, net	25	25
Other current liabilities	282	233
Fiduciary liabilities	250	234
Current liabilities held for sale	1,475	1,370
Total Current Liabilities	2,310	2,187
Deferred tax liabilities	32	32
Long-term debt, net	2,762	2,769
Long-term tax receivable agreement	784	733
Financial instruments	132	109
Other liabilities	166	142
Long-term liabilities held for sale		68
Total Liabilities	6,186	6,040
Commitments and Contingencies
Stockholders' Equity
Treasury stock, at cost (6.4 and 1.5 shares at September 30, 2023 and December 31, 2022, respectively)	(52)	(52)
Additional paid-in-capital	5,113	4,946
Retained deficit	(617)	(503)
Accumulated other comprehensive loss	75	71
Total Alight, Inc. Stockholders' Equity	4,519	4,462
Noncontrolling interest	9	280
Total Stockholders' Equity	4,528	4,742		$ 5,089
Total Liabilities and Stockholders' Equity	$ 10,714	$ 10,782