Alight (ALIT) 10-Q 12 Nov 21 2021 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2021	Nov. 09, 2021
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Entity Registrant Name	Alight, Inc. / Delaware
Entity Central Index Key	0001809104
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity File Number	001-39299
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	86-1849232
Entity Address, Address Line One	4 Overlook Point
Entity Address, City or Town	Lincolnshire
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60069
City Area Code	224
Local Phone Number	737-7000
Document Quarterly Report	true
Document Transition Report	false
Class A Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		446,802,741
Title of 12(b) Security	Class A Common Stock, par value $0.0001 per share
Trading Symbol	ALIT
Security Exchange Name	NYSE
Class B-1 Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		4,990,453
Class B-2 Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		4,990,453
Class V Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		77,459,687
Class Z-A Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		5,046,819
Class Z-B-1 Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		274,379
Class Z-B-2 Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		274,379
Redeemable warrants, each whole warrant exercisable
Document Information [Line Items]
Title of 12(b) Security	Warrants to purchase one share of Class A Common Stock
Trading Symbol	ALIT.WS
Security Exchange Name	NYSE

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Current Assets
Cash and cash equivalents	$ 769	$ 506
Receivables, net	505	532
Other current assets	172	163
Total Current Assets Before Fiduciary Assets	1,446	1,201
Fiduciary assets	1,468	1,030
Total Current Assets	2,914	2,231
Goodwill	3,356	2,245
Intangible assets, net	4,004	1,733
Fixed assets, net	219	334
Deferred tax assets, net	8	5
Other assets	456	408
Total Assets	10,957	6,956
Current Liabilities
Accounts payable and accrued liabilities	348	394
Current portion of long term debt	43	37
Other current liabilities	289	324
Total Current Liabilities Before Fiduciary Liabilities	680	755
Fiduciary liabilities	1,468	1,030
Total Current Liabilities	2,148	1,785
Deferred tax liabilities	3
Long term debt	2,839	4,041
Tax receivable agreement	605
Financial instruments	326
Other liabilities	358	447
Total Liabilities	6,279	6,273
Commitments and Contingencies (Note 18)
Stockholders' Equity
Additional paid-in-capital	4,024
Retained deficit	(168)	(127)
Members' equity		852
Accumulated other comprehensive loss	(3)	(42)
Total Alight, Inc. Equity	3,853	683
Noncontrolling Interest	825
Total Stockholders' Equity	4,678	683
Total Liabilities and Stockholders' Equity	$ 10,957	$ 6,956

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2021	Dec. 31, 2020
Class A Common Stock
Common stock, par value	$ 0.0001
Common stock, shares authorized	1,000,000,000
Common stock, shares issued	446,802,741
Common stock, shares outstanding	446,802,741
Class B Common Stock
Common stock, par value	$ 0.0001
Common stock, shares authorized	20,000,000
Common stock, shares issued	9,980,906
Common stock, shares outstanding	9,980,906
Class V Common Stock
Common stock, par value	$ 0.0001
Common stock, shares authorized	175,000,000
Common stock, shares issued	77,459,687
Common stock, shares outstanding	77,459,687
Class Z Common Stock
Common stock, par value	$ 0.0001
Common stock, shares authorized	12,900,000
Common stock, shares issued	5,595,577	8,671,507
Common stock, shares outstanding	5,595,577

Condensed Consolidated Statemen

Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Revenue	$ 690	$ 668	$ 1,361	$ 2,008
Cost of services, exclusive of depreciation and amortization	442	423	888	1,329
Depreciation and amortization	10	18	38	47
Gross Profit	238	227	435	632
Operating Expenses
Selling, general and administrative	135	128	222	364
Depreciation and intangible amortization	78	57	111	170
Total operating expenses	213	185	333	534
Operating Income	25	42	102	98
Other Expense	(2)	(4)	5	(28)
Loss from change in fair value of financial instruments	90
Loss from change in fair value of tax receivable agreement	27
Interest expense	28	61	123	172
Other expense (income), net		3	9	(1)
Total other expense, net	145	64	132	171
Loss Before Income Tax (Benefit) Expense	(120)	(22)	(30)	(73)
Income tax (benefit) expense		17	(5)	12
Net Loss	(120)	(39)	(25)	(85)
Net loss attributable to noncontrolling interests	(13)
Net Loss Attributable to Alight, Inc.	$ (107)	(39)	(25)	(85)
Earnings Per Share
Basic net loss per share	$ (0.24)
Diluted net loss per share	$ (0.24)
Other comprehensive (loss) income, net of tax:
Change in fair value of derivatives	$ (1)	4	23	(32)
Foreign currency translation adjustments	(2)	14	8	(7)
Total other comprehensive (loss) income, net of tax:	(3)	18	31	(39)
Comprehensive (Loss) Income Before Non-controlling Interests	(123)	(21)	6	(124)
Comprehensive loss attributable to noncontrolling interests	(13)
Comprehensive (Loss) Income Attributable to Alight, Inc.	$ (110)	$ (21)	$ 6	$ (124)

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Additional Paid-in Capital	Retained Deficit	Accumulated Other Comprehensive Loss	Total Alight, Inc. Equity	Noncontrolling Interest
Balance at Dec. 31, 2020	$ 683
Net loss	(25)
Other comprehensive loss, net	31
Balance at Jun. 30, 2021	4,786	$ 4,009	$ (61)		$ 3,948	$ 838
Net loss	(120)		(107)		(107)	(13)
Other comprehensive loss, net	(3)			$ (3)	(3)
Share-based compensation expense	15	15			15
Balance at Sep. 30, 2021	$ 4,678	$ 4,024	$ (168)	$ (3)	$ 3,853	$ 825

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Members' Equity (Unaudited) - USD ($) $ in Millions	Total	Common Class A Units	Common Class A-1 Units	Common Class B Units	Accumulated Other Comprehensive (Loss) Income
Balance at Dec. 31, 2019	$ 805	$ 804	$ 15	$ 11	$ (25)
Balance, units at Dec. 31, 2019		123,700	1,683	1,107
Comprehensive (loss) income, net of tax	(72)	$ (21)			(51)
Restricted share units vested, net of units withheld in lieu of taxes, units			11	15
Share-based compensation expense	2			$ 2
Balance at Mar. 31, 2020	735	$ 783	$ 15	$ 13	(76)
Balance, units at Mar. 31, 2020		123,700	1,694	1,122
Balance at Dec. 31, 2019	805	$ 804	$ 15	$ 11	(25)
Balance, units at Dec. 31, 2019		123,700	1,683	1,107
Comprehensive (loss) income, net of tax	(124)
Balance at Sep. 30, 2020	679	$ 716	$ 13	$ 14	(64)
Balance, units at Sep. 30, 2020		123,700	1,798	1,719
Balance at Mar. 31, 2020	735	$ 783	$ 15	$ 13	(76)
Balance, units at Mar. 31, 2020		123,700	1,694	1,122
Comprehensive (loss) income, net of tax	(31)	$ (25)			(6)
Distribution of members' equity	(1)	(1)
Restricted share units vested, net of units withheld in lieu of taxes	(1)		$ (1)
Restricted share units vested, net of units withheld in lieu of taxes, units			157	209
Unit repurchases	(3)		$ (2)	$ (1)
Unit repurchases, units			(55)	(88)
Share-based compensation expense	2		$ 1	$ 1
Balance at Jun. 30, 2020	701	$ 757	$ 13	$ 13	(82)
Balance, units at Jun. 30, 2020		123,700	1,796	1,243
Comprehensive (loss) income, net of tax	(21)	$ (39)			18
Distribution of members' equity	(2)	(2)
Restricted share units vested, net of units withheld in lieu of taxes, units			2	476
Share-based compensation expense	1			$ 1
Balance at Sep. 30, 2020	679	$ 716	$ 13	$ 14	(64)
Balance, units at Sep. 30, 2020		123,700	1,798	1,719
Balance at Dec. 31, 2020	683	$ 699	$ 12	$ 14	(42)
Balance, units at Dec. 31, 2020		123,700	1,800	1,736
Comprehensive (loss) income, net of tax		$ (21)			21
Restricted share units vested, net of units withheld in lieu of taxes, units			1	50
Unit repurchases	(2)		$ (1)	$ (1)
Unit repurchases, units			(75)	(89)
Share-based compensation expense	2			$ 2
Balance at Mar. 31, 2021	683	$ 678	$ 11	$ 15	(21)
Balance, units at Mar. 31, 2021		123,700	1,726	1,697
Balance at Dec. 31, 2020	683	$ 699	$ 12	$ 14	(42)
Balance, units at Dec. 31, 2020		123,700	1,800	1,736
Comprehensive (loss) income, net of tax	6
Balance at Jun. 30, 2021	691	$ 674	$ 11	$ 17	(11)
Balance, units at Jun. 30, 2021		123,700	1,817	2,088
Balance at Mar. 31, 2021	683	$ 678	$ 11	$ 15	(21)
Balance, units at Mar. 31, 2021		123,700	1,726	1,697
Comprehensive (loss) income, net of tax	6	$ (4)			10
Restricted share units vested, net of units withheld in lieu of taxes	(1)		$ (1)
Restricted share units vested, net of units withheld in lieu of taxes, units			91	391
Share-based compensation expense	3		$ 1	$ 2
Balance at Jun. 30, 2021	691	$ 674	$ 11	$ 17	(11)
Balance, units at Jun. 30, 2021		123,700	1,817	2,088
Comprehensive (loss) income, net of tax	(110)
Share-based compensation expense	$ 15
Balance at Sep. 30, 2021					$ 3

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended	6 Months Ended	9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020
Cash flows from operating activities
Net loss	$ (120)	$ (25)	$ (85)
Adjustments to reconcile net loss to net cash (used for) provided by operations:
Depreciation	14	49	66
Intangible amortization expense	74	100	151
Noncash lease expense	6
Financing fee and premium amortization	(1)
Share-based compensation expense	15	5	5
Loss from change in fair value of financial instruments	90
Loss from change in fair value of tax receivable agreement	27
Change in assets and liabilities:
Receivables	(22)
Accounts payable and accrued liabilities	14
Other assets and liabilities	(104)
Cash (used for) provided by operating activities	(7)
Cash flows from investing activities
Acquisition of businesses, net of cash acquired	(1,394)
Capital expenditures	(27)
Cash used for investing activities	(1,421)
Cash flows from financing activities
Net increase (decrease) in fiduciary liabilities	453
Borrowings from banks	576
Financing fees	(7)
Repayments to banks	(57)
Principal payments on finance lease obligations	(7)
Settlements of interest rate swaps	(4)
FTAC share redemptions	(142)
Proceeds related to FTAC investors	1,813
Cash provided by (used for) financing activities	2,625
Effect of exchange rate changes on cash, cash equivalents and restricted cash	4
Net increase (decrease) in cash, cash equivalents and restricted cash	1,201
Cash, cash equivalents and restricted cash at beginning of period	1,036
Cash, cash equivalents and restricted cash at end of period	2,237	1,036
Reconciliation of cash, cash equivalents, and restricted cash to the Condensed Consolidated Balance Sheets
Cash and cash equivalents	769
Restricted cash included in fiduciary assets	1,468
Cash, cash equivalents and restricted cash at end of period	2,237	1,036
Supplemental disclosures:
Interest paid	26	112	127
Income taxes paid	4	5	16
Supplemental disclosure of non-cash financing activities:
Fixed asset additions acquired through finance leases	1	2	62
Right of use asset additions acquired through operating leases		10	26
Non-cash fixed asset additions			26
Alight Holdings
Cash flows from operating activities
Net loss		(25)	(85)
Adjustments to reconcile net loss to net cash (used for) provided by operations:
Depreciation		49	66
Intangible amortization expense		100	151
Noncash lease expense		10	17
Financing fee and premium amortization		9	15
Share-based compensation expense		5	5
Other		1	1
Change in assets and liabilities:
Receivables		51	81
Accounts payable and accrued liabilities		(45)	35
Other assets and liabilities		(97)	(155)
Cash (used for) provided by operating activities		58	131
Cash flows from investing activities
Acquisition of businesses, net of cash acquired			(52)
Capital expenditures		(55)	(71)
Cash used for investing activities		(55)	(123)
Cash flows from financing activities
Net increase (decrease) in fiduciary liabilities		(15)	210
Members' equity unit repurchase		(2)	(3)
Distributions of members' equity			(3)
Borrowings from banks		110	726
Financing fees			(23)
Repayments to banks		(124)	(435)
Principal payments on finance lease obligations		(17)	(18)
Settlements of interest rate swaps		(14)	(14)
Tax payment for units withheld in lieu of taxes		(1)
Contingent consideration payments		(1)
Other financing activities			(2)
Cash provided by (used for) financing activities		(64)	438
Effect of exchange rate changes on cash, cash equivalents and restricted cash			(3)
Net increase (decrease) in cash, cash equivalents and restricted cash		(61)	443
Cash, cash equivalents and restricted cash at beginning of period	$ 1,475	1,536	985
Cash, cash equivalents and restricted cash at end of period		1,475	1,428
Reconciliation of cash, cash equivalents, and restricted cash to the Condensed Consolidated Balance Sheets
Cash and cash equivalents		460	451
Restricted cash included in fiduciary assets		1,015	977
Cash, cash equivalents and restricted cash at end of period		$ 1,475	$ 1,428

Basis of Presentation and Natur

Basis of Presentation and Nature of Business	9 Months Ended
	Sep. 30, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Presentation and Nature of Business	1. Basis of Presentation and Nature of Business Foley Trasimene Acquisition Corp. (“FTAC”) was incorporated in Delaware on March 26, 2020. FTAC was formed for the purpose of effecting a merger, capital stock exchange, asset acquisition, stock purchase, reorganization or similar business combination with one or more businesses. On July 2, 2021 (the “Closing Date”), FTAC completed the business combination (the “Business Combination”) with Alight Holding Company, LLC (f/k/a Tempo Holding Company, LLC) (“Alight Holdings” or the “Predecessor”) contemplated by the Business Combination Agreement (as amended and restated as of April 29, 2021) between FTAC, Alight Holdings and other interested parties (the “Business Combination Agreement”). On the Closing Date, pursuant to the Business Combination Agreement, FTAC became a wholly owned subsidiary of Alight, Inc. (“Alight”, “the Company”, “we” “us” “our” or the “Successor”) and was renamed Alight Group, Inc. As a result of the Business Combination, and by virtue of such series of mergers and related transactions, the combined company is now organized in an “Up-C” structure, in which substantially all of the assets and business of Alight are held by Alight Holdings, of which Alight is the managing member pursuant to the terms of the Second Amended and Restated Limited Liability Company Agreement of Alight Holdings that went into effect upon the completion of the Business Combination. As a result of the Business Combination, Alight owns approximately 85% of the economic interest in Alight Holdings, but will have 100% of the voting power and will control the management of Alight Holdings. Immediately following the completion of the Business Combination, the ownership percentage held by noncontrolling interest is approximately 15%. Basis of Presentation As a result of the Business Combination, for accounting purposes, the Company is the acquirer and Alight Holdings is the acquiree and accounting predecessor. While the Closing Date was July 2, 2021, we have determined that as the impact of one day would be immaterial to the results of operations, we will utilize July 1, 2021 as the date of the Business Combination for accounting purposes. Therefore, the financial statement presentation includes the financial statements of Alight Holdings as Predecessor for the periods prior to July 1, 2021 and the Company as Successor for the periods after July 1, 2021, including the consolidation of Alight Holdings. The accompanying unaudited Condensed Consolidated Financial Statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information and should be read in conjunction with the Consolidated Financial Statements contained in the Company’s Registration Statement on Form S-1 filed on August 2, 2021, as amended. In the opinion of management, all adjustments, including normal recurring adjustments, considered necessary for a fair presentation have been included. All significant intercompany transactions and balances have been eliminated upon consolidation. The results of operations for interim periods are not necessarily indicative of the results to be expected for future quarters or for the full fiscal year ending December 31, 2021. Nature of Business We are a leading cloud-based provider of integrated digital human capital and business solutions. We have an unwavering belief that a company’s success starts with its people, and our solutions connect human insights with technology. Leveraging artificial intelligence (“AI”) and data analytics, we provide an integrated, personalized experience for employees using technology-driven solutions that unlock value for employers. Our mission-critical solutions enable employees to enrich their health, wealth and wellbeing which helps global organizations achieve a high-performance culture. Our solutions include: • Employer Solutions: driven by our digital, software and AI-led capabilities and spanning total employee wellbeing and engagement, including integrated benefits administration, healthcare navigation, financial health, employee wellness and payroll. These solutions are designed to support employers in effectively managing their workforce through a seamless, integrated platform. We leverage data across all interactions and activities to improve the consumer experience, reduce operational costs and better inform management processes and decision-making. In addition, employees benefit from an integrated portal and user experience, coupled with a full-service client care center, helping them manage the full life cycle of their health, wealth and careers. • Professional Services: includes our project-based cloud deployment and consulting offerings that provide expertise with both human capital and financial platforms. Specifically, this includes cloud advisory and deployment, and optimization services for cloud platforms such as Workday, SAP SuccessFactors, Oracle, and Cornerstone OnDemand.

Accounting Policies and Practic

Accounting Policies and Practices	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Accounting Policies and Practices	2. Accounting Policies and Practices Use of Estimates The preparation of the accompanying Condensed Consolidated Financial Statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosures of contingent assets and liabilities at the date of the financial statements, and the reported amounts of reserves and expenses. These estimates and assumptions are based on management’s best estimates and judgments. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment. Management believes its estimates to be reasonable given the current facts available. Management adjusts such estimates and assumptions when facts and circumstances dictate. Illiquid credit markets, volatile equity markets, and foreign currency exchange rate movements increase the uncertainty inherent in such estimates and assumptions. As future events and their effects cannot be predicted with certainty, actual results could differ significantly from these estimates. Changes in estimates resulting from continuing changes in the economic environment would, if applicable, be reflected in the financial statements in future periods. Concentration of Risk The Company has no significant off-balance sheet risks related to foreign exchange contracts or other foreign hedging arrangements. Management believes that its account receivable credit risk exposure is limited, and the Company has not experienced significant write-downs in its accounts receivable balances. Additionally, there was no single client who accounted for more than 10% of the Company’s revenues in any of the periods presented. Cash and Cash Equivalents Cash and cash equivalents include cash balances. At September 30, 2021 and December 31, 2020, Cash and cash equivalents totaled $769 million and $506 million, respectively, and none of the balances were restricted as to its use. Fiduciary Assets and Liabilities Some of the Company’s agreements require it to hold funds to pay certain obligations on behalf of its clients. Funds held on behalf of clients are segregated from Company funds, and their use is restricted to the payment of obligations on behalf of clients. There is typically a short period of time between when the Company receives funds and when it pays obligations on behalf of clients. These funds are recorded as Fiduciary assets with the related obligation recorded as Fiduciary liabilities in the Condensed Consolidated Balance Sheets. Commissions Receivable Commissions receivable, which is recorded in Other current assets and Other assets in the Condensed Consolidated Balance Sheets, are contract assets that represent estimated variable consideration for commissions to be received from insurance carriers for performance obligations that have been satisfied. The current portion of Commissions receivable is expected to be received within one year, while the non-current portion of Commissions receivable is expected to be received beyond one year. Allowance for Expected Credit Losses The Company’s allowance for expected credit losses with respect to trade receivables and contract assets is based on a combination of factors, including evaluation of historical write-offs, current conditions and reasonable economic forecasts that affect collectability and other qualitative and quantitative analysis. Receivables, net included an allowance for expected credit losses of $4 million and $15 million at September 30, 2021 and December 31, 2020, respectively. Fixed Assets, Net The Company records fixed assets at cost. We compute depreciation and amortization using the straight-line method on the estimated useful lives of the assets, which are generally as follows: Asset Description Asset Life Capitalized software Lesser of the life of an associated license, or 4 to 7 years Leasehold improvements Lesser of estimated useful life or lease term, not to exceed 10 years Furniture, fixtures and equipment 4 to 10 years Computer equipment 4 to 6 years Goodwill and Intangible Assets, Net In applying the acquisition method of accounting for business combinations, amounts assigned to identifiable assets and liabilities acquired were based on estimated fair values as of the date of acquisition, with the remainder recorded as goodwill. Intangible assets are initially valued at fair value using generally accepted valuation methods appropriate for the type of intangible asset. Intangible assets with definite lives are amortized over their estimated useful lives and are reviewed for impairment if indicators of impairment arise. Goodwill is tested for impairment annually as of October 1, and whenever indicators of impairment arise . Derivatives The Company uses derivative financial instruments, such as interest rate swaps. Interest rate swaps are used to manage interest risk exposures and have been designated as cash flow hedges. The changes in the fair value of derivatives that qualify for hedge accounting as cash flow hedges are recorded in Accumulated other comprehensive loss. Amounts are reclassified from Accumulated other comprehensive loss into earnings when the hedge exposure affects earnings. The Company discontinues hedge accounting prospectively when: (1) the derivative expires or is sold, terminated, or exercised; (2) the qualifying criteria are no longer met; or (3) management removes the designation of the hedging relationship. Foreign Currency Certain of the Company’s non-U.S. operations use their respective local currency as their functional currency. The operations that do not have the U.S. dollar as their functional currency translate their financial statements at the current exchange rates in effect at the balance sheet date and revenues and expenses using rates that approximate those in effect during the period. The resulting translation adjustments are included in net foreign currency translation adjustments within the Condensed Consolidated Statements of Stockholders’ Equity. Gains and losses from the remeasurement of monetary assets and liabilities that are denominated in a non-functional currency are included in Other expense, net within the Condensed Consolidated Statements of Comprehensive Income (Loss). The impact of the foreign exchange gains and losses for the Successor three months ended September 30, 2021 was a gain of $1 million. The impact of the foreign exchange gains and losses for the Predecessor six months ended June 30, 2021 and three and nine months ended September 30, 2020 were a loss of $9 million, a loss of $3 million, and a gain of $2 million, respectively. Share-Based Compensation Costs Share-based payments to employees, including grants of restricted share units (“RSUs”) and performance-based restricted share units (“PRSUs”), for both the Predecessor and Successor periods, are measured based on their estimated grant date fair value. The Company recognizes compensation expense on a straight-line basis over the requisite service period for awards expected to ultimately vest. Forfeitures are estimated on the date of grant and revised if actual or expected forfeiture activity differs materially from original estimates. Earnings Per Share Basic earnings per share is calculated by dividing the net loss attributable to Alight, Inc. by the weighted average number of shares of Class A Common Stock issued and outstanding for the Successor period. The computation of diluted earnings per share reflects the potential dilution that could occur if dilutive securities and other contracts to issue shares were exercised or converted into shares or resulted in the issuance of shares that would then share in the net income of the Alight, Inc. Warrants Warrant agreements related to warrants to purchase the Company’s Class A Common Stock are accounted for as liabilities at fair value within Financial instruments on the Condensed Consolidated Balance Sheets and are subject to remeasurement at each balance sheet date. Any change in fair value is recognized within the Condensed Consolidated Statements of Comprehensive Income (Loss). Tax Receivable Agreement In connection with the Business Combination, we entered into a Tax Receivable Agreement (the “TRA”) with certain of our pre-Business Combination owners that provides for the payment by Alight to such owners of 85% of the benefits that Alight is deemed to realize as a result of the Company’s share of existing tax basis acquired in the Business Combination and other tax benefits related to entering into the TRA. The Company accounts for the TRA as a liability at fair value and is subject to remeasurement at each balance sheet date. Any change in fair value is recognized within the Condensed Consolidated Statements of Comprehensive Income (Loss). Seller Earnouts Upon completion of the Business Combination, we executed a contingent consideration agreement (the “Seller Earnouts”) that results in the issuance of non-voting shares of Class B-1 and Class B-2 Common Stock, which automatically converts into Class A Common Stock upon the achievement of certain criteria. The majority of the Seller Earnouts are accounted for as a contingent consideration liability at fair value within Financial instruments on the Condensed Consolidated Balance Sheets and are subject to remeasurement at each balance sheet date. Any change in fair value is recognized within the Condensed Consolidated Statements of Comprehensive Income (Loss). Noncontrolling Interest Noncontrolling interest represents the Company’s noncontrolling interest in consolidated subsidiaries which are not attributable, directly or indirectly, to the controlling Class A Common Stock ownership of the Company. Net (loss) income is reduced by the portion of net (loss) income that is attributable to noncontrolling interests. These noncontrolling interests are convertible into Class A Common Stock of the Company at the holder’s discretion. Income Taxes During the Predecessor periods, a portion of the Company’s earnings were subject to certain U.S. federal, state and foreign taxes. During the Successor period, the portion of earnings allocable to the Company is subject to corporate level tax rates at the U.S. federal, state and local levels. Therefore, the amount of income taxes recorded in the Predecessor periods are not representative of the expenses expected in the future. The computation of the effective tax rate and provision at each interim period requires the use of certain estimates and significant judgment including, but not limited to, the expected operating income for the year, projections of the proportion of income that is subject to tax, permanent differences between the Company’s U.S. GAAP earnings and taxable income, and the likelihood of recovering deferred tax assets existing as of the balance sheet date. The estimates used to compute the provision for income taxes may change throughout the year as new events occur, additional information is obtained or as tax laws and regulations change. Accordingly, the effective tax rate for future interim periods may vary materially. The Company accounts for income taxes pursuant to the asset and liability method which requires it to recognize current tax liabilities or receivables for the amount of taxes it estimates are payable or refundable for the current year, deferred tax assets and liabilities for the expected future tax consequences attributable to temporary differences between the financial statement carrying amounts and their respective tax bases of assets and liabilities and the expected benefits of net operating loss and credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in operations in the period enacted. A valuation allowance is provided when it is more likely than not that a portion or all of a deferred tax asset will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income and the reversal of deferred tax liabilities during the period in which related temporary differences become deductible. The Company recognizes the benefits of tax return positions in the financial statements if it is “more-likely-than-not” they will be sustained by a taxing authority. The measurement of a tax position meeting the more-likely-than-not criteria is based on the largest benefit that is more than 50 percent likely to be realized. Only information that is available at the reporting date is considered in the Company’s recognition and measurement analysis and events or changes in facts and circumstances are accounted for in the period in which the event or change in circumstance occurs. New Accounting Pronouncements: Recently Adopted Reference Rate Reform In March 2020, the FASB issued ASU 2020-04, “ Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting Callable Debt Securities In October 2020, the FASB issued ASU 2020-08, “ Codification Improvements to Subtopic 310-20 – Receivables – Nonrefundable Fees and Other Costs.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	9 Months Ended
	Sep. 30, 2021
Revenue From Contract With Customer [Abstract]
Revenue from Contracts with Customers	3. Revenue from Contracts with Customers The majority of the Company’s revenue is highly recurring and is derived from contracts with customers to provide integrated, cloud-based human capital solutions that empower clients and their employees to manage their health, wealth and HR needs. The Company’s revenues are disaggregated by recurring and project revenues within each reportable segment. Recurring revenues are typically longer term in nature and more predictable on an annual basis, while project revenues consist of project work of a shorter duration. See Note 12 “Segment Reporting” for quantitative disclosures of recurring and project revenues by reportable segment. The Company’s reportable segments are Employer Solutions, Professional Services and Hosted Business. Employer Solutions are driven by our digital, software and AI-led capabilities and spanning total employee wellbeing and engagement, including integrated employee wellness, benefits administration, healthcare navigation and financial health. Professional Services includes our cloud deployment, advisory and application management services. The Company believes these revenue categories depict how the nature, amount, timing, and uncertainty of its revenue and cash flows are affected by economic factors. Revenues are recognized when control of the promised services is transferred to the customer in the amount that best reflects the consideration to which the Company expects to be entitled in exchange for those services. The majority of the Company’s revenue is recognized over time as the customer simultaneously receives and consumes the benefits of our services. On occasion, we may be entitled to a fee based on achieving certain performance criteria or contract milestones. To the extent that we cannot estimate with reasonable assurance the likelihood that we will achieve the performance target, we will constrain this portion of the transaction price and recognize it when or as the uncertainty is resolved. Any taxes assessed on revenues relating to services provided to our clients are recorded on a net basis. All of the Company’s revenues are described in more detail below. Administrative Services We provide benefits, human resource and payroll administration services across all of our solutions, which are highly recurring. The Company’s contracts may include administration services across one or multiple solutions and typically have three to five-year These contracts typically consist of an implementation phase and an ongoing administration phase: Implementation phase – In connection with the Company’s long-term agreements, highly customized implementation efforts are often necessary to set up clients and their human resource, payroll or benefit programs on the Company’s systems and operating processes. Work performed during the implementation phase is considered a set-up activity because it does not transfer a service to the customer. Therefore, it is not a separate performance obligation. As these agreements are longer term in nature, our contracts generally provide that if the client terminates a contract, we are entitled to an additional payment for services performed through the termination date designed to recover our up-front costs of implementation. Any fees received from the customer as part of the implementation are in effect, an advance payment for the future ongoing administration services to be provided. Ongoing administration services phase – For all solutions, the ongoing administration phase includes a variety of plan and payroll administration services and system support services. More specifically, these services include data management, calculations, reporting, fulfillment/communications, compliance services, call center support, and in our Health solutions agreements, annual on-boarding and enrollment support. While there are a variety of activities performed across all solutions, the overall nature of the obligation is to provide integrated administration solutions to the customer. The agreement represents a stand-ready obligation to perform these activities across all solutions on an as-needed basis. The customer obtains value from each period of service, and each time increment (i.e., each month, or each benefit cycle in the case of our Health solutions arrangements) is distinct and substantially the same. Accordingly, the ongoing administration services for each solution represents a series and each series (i.e., each month, or each benefit cycle including the enrollment period in the case of our Health solutions arrangements) of distinct services are deemed to be a single performance obligation. In agreements that include multiple performance obligations, the transaction price related to each performance obligation is based on a relative stand-alone selling price basis. We establish the stand-alone selling price using observable market prices that the Company charges separately for similar solutions to similar customers. Our contracts with our clients specify the terms and conditions upon which the services are based. Fees for these services are primarily based on a contracted fee charged per participant per period (e.g., monthly or annually, as applicable). These contracts may also include fixed components, including lump-sum implementation fees. Our fees are not typically payable until the commencement of the ongoing administration phase. Once fees become payable, payment is typically due on a monthly basis as we perform under the contract, and we are entitled to be reimbursed for work performed to date in the event of termination. For Health solutions administration services, each benefits cycle inclusive of the enrollment period represents a time increment under the series guidance and is a single performance obligation. Although ongoing fees are typically not payable until the commencement of the ongoing administrative phase, we begin transferring services to our customers approximately four months prior to payments being due as part of our annual enrollment services. Although our per-participant fees are considered variable, they are typically predictable in nature, and therefore we do not generally constrain any portion of our transaction price estimates. We use an input method based on the labor costs incurred relative to total labor costs as the measure of progress in satisfying our Health solutions performance obligation commencing when the customer’s annual enrollment services begin. Given that the Health solutions enrollment and administrative services are stand-ready in nature, it can be difficult to estimate the total expected efforts or hours we will incur for a particular benefits cycle. Therefore, the input measure is based on the historical effort expended each month, which is measured as labor cost. For all other benefits administration, human resources and payroll services where each month represents a distinct time increment under the series guidance, we allocate the transaction price to the month we are performing our services. Therefore, the amount recognized each month is the variable consideration related to that month plus any fixed monthly or annual fee, which is recognized on a straight-line basis. Revenue for these types of arrangements are therefore more consistent throughout the year. In the normal course of business, we enter into change orders or other contract modifications to add or modify services provided to the customer. We evaluate whether these modifications should be accounted for as separate contracts or a modification to an existing contract. To the extent that the modification changes a promise that forms part of the underlying series, the modification is not accounted for as a separate contract. Other Contracts In addition to the ongoing administration services, the Company also has services across all solutions that represent separate performance obligations and that are often shorter in duration, such as our cloud deployment services, cloud advisory services, participant financial advisory services, and enrollment services not bundled with ongoing administration services. Fee arrangements can be in the form of fixed-fee, time-and-materials, or fees based on assets under management. Payment is typically due on a monthly basis as we perform under the contract, and we are entitled to be reimbursed for work performed to date in the event of termination. Services may represent stand-ready obligations that meet the series provision, in which case all variable consideration is allocated to each distinct time increment. Other services are recognized over-time based on a method that faithfully depicts the transfer of value to the customer, which may be based on the value of labor hours worked or time elapsed, depending on the facts and circumstances. A portion of the fees for enrollment services not bundled with ongoing administration services may be in the form of commissions received from carriers and are variable in nature. These annual enrollment services are typically completed over a short period. However, the Company may continue to receive commissions from carriers until the respective policy lapses or is cancelled. The Company bases the estimates of total transaction price on supportable evidence from an analysis of past transactions, and only includes amounts that are probable of being received or not refunded. This is an area requiring significant judgement and as a result, the estimated total transaction price may be lower than the ultimate amount of commissions we may collect. Consequently, the estimate of total transaction price is adjusted over time as the Company receives confirmation of cash received, or as other information becomes available. The Company has elected to apply practical expedients to not disclose the revenue related to unsatisfied performance obligations if (1) the contract has an original duration of one year or less, or (2) the variable consideration is allocated entirely to an unsatisfied performance obligation which is recognized as a series of distinct goods and services that form a single performance obligation. Contract Costs Costs to obtain a Contract The Company capitalizes incremental costs to obtain a contract with a customer that are expected to be recovered. Assets recognized for the costs to obtain a contract, which primarily includes sales commissions paid in relation to the initial contract, are amortized over the expected life of the underlying customer relationships, which is 7 years for our payroll and cloud solutions and 15 years for all of our other solutions. Commissions paid in relation to contract renewals were immaterial for all periods. The expected life of the underlying customer relationships considers the initial contract terms, which range from 3-5 years as well as expected renewals. For situations where the duration of the contract is 1 year or less, the Company has applied a practical expedient and recognized the costs of obtaining a contract as an expense when incurred. These costs are recorded in Cost of services, exclusive of depreciation and amortization in the Condensed Consolidated Statements of Comprehensive Income (Loss). Costs to fulfill a Contract The Company capitalizes costs to fulfill contracts which includes highly customized implementation efforts to set up clients and their human resource, payroll or benefit programs. Assets recognized for the costs to fulfill a contract are amortized on a systematic basis over the expected life of the underlying customer relationships, which is 7 years for our payroll and cloud solutions and 15 years for all of our other solutions. Amortization for all contracts costs are recorded in Cost of services, exclusive of depreciation and amortization in the Condensed

Acquisitions

Acquisitions	9 Months Ended
	Sep. 30, 2021
Business Combinations [Abstract]
Acquisitions	4. Acquisitions 2021 Acquisitions Alight Business Combination On July 2, 2021, the Company completed the Business Combination for consideration transferred of approximately $5.0 billion. The Business Combination was accounted for using the acquisition method under Accounting Standards Codification Topic 805, Business Combinations On the Closing Date, the Company paid $36 million of deferred underwriting costs related to FTAC’s initial public offering and $37 million of fees related to the PIPE Investment, which were treated as a reduction of equity. Approximately $21 million of the Company’s acquisition-related costs were paid on the Closing Date. Additionally, $39 million of seller transaction costs were paid on the Closing Date, including $36 million in advisory and investment banker fees that were contingent upon the consummation of the Business Combination. As these fees are considered success fees in nature, they are considered to have been incurred “on the line”, and therefore, were not recognized in the Condensed Consolidated Statements of Comprehensive Income (Loss) in either the Predecessor or Successor periods. On the Closing Date, approximately $36 million of certain executive compensation related expenses that were contingent upon the closing of the Business Combination were triggered. As these expenses were contingent upon the change-in-control event, they are considered to have been incurred “on the line”, and therefore, were not recognized in the Condensed Consolidated Statements of Comprehensive Income (Loss) in either the Predecessor or Successor periods. The following table summarizes the preliminary consideration transferred (in millions): Cash consideration to prior equityholders (1) $ 1,055 Repayment of debt 1,814 Total cash consideration $ 2,869 Continuing unitholders rollover equity into the Company (2) 1,414 Contingent consideration - Tax Receivable Agreement (3) 578 Contingent consideration - Seller Earnouts (3) 109 Total consideration transferred $ 4,970 Noncontrolling interest (4) $ 838 (1) ( 2 ) ( 3 ) ( 4 ) The following table summarizes the preliminary purchase price allocation (in millions): Cash and cash equivalents $ 460 Receivables 486 Fiduciary assets 1,015 Other current assets 159 Fixed assets 206 Deferred tax assets, net 4 Other assets 440 Accounts payable and accrued liabilities (327 ) Fiduciary liabilities (1,015 ) Other current liabilities (302 ) Debt assumed (2,370 ) Other liabilities (381 ) Intangible assets 4,078 Total identifiable net assets $ 2,453 Goodwill $ 3,356 Intangible Assets Intangible assets were identified that met either the separability criterion or the contractual-legal criterion described in ASC 805. The trade name intangible asset represents the corporate Alight tradename, which was valued using the relief-from-royalty method. The technology related intangible assets represent software developed by Alight Holdings to differentiate its product/service offerings for its customers, valued using the relief-from-royalty method. The customer related and contract based intangible assets represent strong, long-term relationships with customers, valued using the multi-period excess earnings method. The preliminary values allocated to identifiable intangible assets and their estimated useful lives are as follows: Fair value Useful life Identifiable intangible assets (in millions) (in years) Definite lived trade names $ 400 15 Technology related intangibles $ 222 6 Customer related and contract based intangibles $ 3,456 15 Goodwill Approximately $3.4 billion has been preliminarily allocated to goodwill. Goodwill represents the excess of the gross consideration transferred over the fair value of the underlying net tangible and identifiable definite-lived intangible assets acquired. Qualitative factors that contribute to the recognition of goodwill include certain intangible assets that are not recognized as separate identifiable intangible assets apart from goodwill, including assembled workforce and expected future market conditions. Pro Forma Financial Information The following unaudited pro forma financial information presents the results of operations as if the Business Combination had occurred on January 1, 2020. The unaudited pro forma results may not necessarily reflect the actual results of operations that would have been achieved nor are they necessarily indicative of future results of operations. The unaudited pro forma financial information is as follows (in millions): Three Months Ended Nine Months Ended September 30, September 30, 2021 2020 2021 2020 Pro forma revenue $ 690 $ 668 $ 2,051 $ 2,008 Pro forma net loss $ (111 ) $ (70 ) $ (121 ) $ (136 ) Pro forma net loss attributable to controlling interest $ (99 ) $ (56 ) $ (107 ) $ (111 ) Pro forma net loss attributable to noncontrolling interest $ (12 ) $ (14 ) $ (14 ) $ (25 ) The unaudited pro forma financial information does not assume any impacts from revenue, cost or other operating synergies that could be generated as a result of the Business Combination. The unaudited pro forma financial information is for informational purposes only and is not indicative of the results of operations that would have been achieved had the Business Combination been consummated on January 1, 2020. The Successor and Predecessor periods have been combined in the pro forma financial information for the three and nine months ended September 30, 2021 and 2020 and include adjustments to reflect intangible asset amortization based on the economic values derived from definite-lived intangible assets and a reduction in interest expense related to the repayment of existing debt. Additionally, the unaudited pro forma financial information includes nonrecurring, direct transaction costs incurred in connection with the Business Combination of approximately $11 million for the nine months ended September 30, 2020. These adjustments are net of taxes. 2020 Acquisition The Company completed one acquisition during the year ended December 31, 2020. The acquisition was not material to the Company’s results of operations, financial position, or cash flows. The Company accounted for the acquisition as a business combination under ASC 805. The goodwill identified by this acquisition is primarily attributed to the synergies that are expected to be realized as well as intangible assets that do not qualify for separate recognition, such as assembled workforce. Goodwill is not amortized and is deductible for tax purposes. Upon completion of this acquisition, the business is now wholly-owned by the Company.

Other Financial Data

Other Financial Data	9 Months Ended
	Sep. 30, 2021
Other Financial Data [Abstract]
Other Financial Data	5. Other Financial Data Condensed Consolidated Balance Sheets Information Receivables, net The components of Receivables, net are as follows (in millions): Successor Predecessor September 30, December 31, 2021 2020 Billed and unbilled receivables $ 509 $ 547 Allowance for expected credit losses (4 ) (15 ) Balance at end of period $ 505 $ 532 As a result of the Business Combination, all receivables acquired were recorded at preliminary fair value and allowance for expected credit losses previously recorded by the Predecessor was reduced to zero as of July 1, 2021 (see Note 4 “Acquisitions”). The Company has not experienced significant write-downs in its receivable balances. Other current assets The components of Other current assets are as follows (in millions): Successor Predecessor September 30, December 31, 2021 2020 Deferred project costs $ 39 $ 53 Prepaid expenses 65 57 Commissions receivable 35 32 Other 33 21 Total $ 172 $ 163 Other assets The components of Other assets are as follows (in millions): Successor Predecessor September 30, December 31, 2021 2020 Deferred project costs $ 252 $ 228 Operating lease right of use asset 144 129 Commissions receivable 33 25 Other 27 26 Total $ 456 $ 408 The current and non-current portions of deferred project costs relate to costs to obtain and fulfill contracts (see Note 3 “Revenue from Contracts with Customers”). During the Successor three months ended September 30, 2021 and the Predecessor six months ended June 30, 2021 and three and nine months ended September 30, 2020, total amortization expense of $17 million, $33 million, $15 million and $47 million was recorded in Cost of services, exclusive of depreciation and amortization in the Condensed Consolidated Statements of Comprehensive Income (Loss), respectively. Other assets include the fair value of outstanding derivative instruments related to interest rate swaps. The balance in Other assets as of September 30, 2021 was $5 million (see Note 13 “Derivative Financial Instruments” for further information). Fixed assets, net The components of Fixed assets, net are as follows (in millions): Successor Predecessor September 30, December 31, 2021 2020 Capitalized software $ 40 $ 242 Leasehold improvements 39 63 Computer equipment 98 192 Furniture, fixtures and equipment 12 21 Construction in progress 44 28 Total Fixed assets, gross 233 546 Less: Accumulated depreciation 14 212 Fixed assets, net $ 219 $ 334 As a result of the Business Combination, all fixed assets acquired were recorded at preliminary fair value and accumulated depreciation previously recorded by the Predecessor was reduced to zero as of July 1, 2021 (see Note 4 “Acquisitions”). In addition, as part of the purchase price accounting for the Business Combination, Capitalized software related to internally developed software in-service as of the Closing Date was reclassified and included in the preliminary fair value of the Technology related intangible assets acquired. Included in Computer equipment are assets under finance leases. The balances as of September 30, 2021 and December 31, 2020, net of accumulated depreciation related to these assets, were $67 million and $83 million, respectively. Other current liabilities The components of Other current liabilities are as follows (in millions): Successor Predecessor September 30, December 31, 2021 2020 Deferred revenue $ 123 $ 148 Operating lease liabilities 53 41 Finance lease liabilities 28 28 Other 85 107 Total $ 289 $ 324 Other liabilities The components of Other liabilities are as follows (in millions): Successor Predecessor September 30, December 31, 2021 2020 Deferred revenue $ 54 $ 60 Operating lease liabilities 132 155 Finance lease liabilities 40 59 Unrecognized tax positions 49 48 Other 83 125 Total $ 358 $ 447 The current and non-current portions of deferred revenue relates to consideration received in advance of performance under client contracts. During the Successor three months ended September 30, 2021 and the Predecessor six months ended June 30, 2021 and nine months ended September 30, 2020, revenue of approximately $22 million, $101 million, and $152 million was recognized that was recorded as deferred revenue at the beginning of each period, respectively. Other current liabilities and Other liabilities include the fair value of outstanding derivative instruments related to interest rate swaps. The balances in Other current liabilities as of September 30, 2021 and December 31, 2020 were $12 million and $28 million, respectively. The balances in Other liabilities as of September 30, 2021 and December 31, 2020 were $1 million and $19 million, respectively (see Note 13 “Derivative Financial Instruments” for further information).

Goodwill and Intangible Assets,

Goodwill and Intangible Assets, Net	9 Months Ended
	Sep. 30, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets, Net	6. Goodwill and Intangible assets, net The changes in the net carrying amount of goodwill are as follows (in millions): Predecessor Employer Professional Solutions Services Total Balance as of December 31, 2020 $ 1,985 $ 260 $ 2,245 Measurement period adjustments 2 — 2 Foreign currency translation 2 1 3 Balance as of June 30, 2021 $ 1,989 $ 261 $ 2,250 The preliminary Successor goodwill at both July 1, 2021 and September 30, 2021 was $3.4 billion and $36 million for Employer Solutions and Professional Services, respectively. Of the preliminary Successor goodwill established during the period, $1.5 billion of the goodwill was tax deductible. The Company did not identify any impairment for the Successor period from July 1, 2021 to September 30, 2021, nor the Predecessor period December 31, 2020 to June 30, 2021. Goodwill is reviewed for impairment utilizing a qualitative assessment or a quantitative goodwill impairment test and the Company determined that it was more likely than not that no impairment of goodwill existed as of the evaluation date. Intangible assets by asset class are as follows (in millions): Successor Predecessor September 30, 2021 December 31, 2020 Gross Net Gross Carrying Accumulated Carrying Carrying Accumulated Net Carrying Amount Amortization Amount Amount Amortization Amount Intangible assets: Customer related and contract based intangibles $ 3,456 $ 58 $ 3,398 $ 2,078 $ 486 $ 1,592 Technology related intangibles 222 9 213 316 180 136 Trade name (finite life) 400 7 393 8 6 2 Trade name (indefinite life) — — — 3 — 3 Total $ 4,078 $ 74 $ 4,004 $ 2,405 $ 672 $ 1,733 The net carrying amount of Intangible assets as of September 30, 2021 includes the preliminary fair values for customer related and contract based identifiable intangible assets, technology related intangible assets and tradename assets based on management’s preliminary estimate of fair value (see Note 4 “Acquisitions” for further information). As a result of the Business Combination, all accumulated amortization previously recorded by the Predecessor was reduced to zero as of July 1, 2021. Amortization expense from finite-lived intangible assets for the Successor three months ended September 30, 2021 and the Predecessor six months ended June 30, 2021 and three and nine months ended September 30, 2020 was $74 million, $100 million, $51 million and $151 million, respectively, which was recorded in Depreciation and intangible amortization in the Condensed Consolidated Statements of Comprehensive Income (Loss). Subsequent to September 30, 2021, the annual amortization expense is expected to be as follows (in millions): Customer Related Technology Trade and Contract Based Related Name Intangibles Intangibles Intangible Remainder of 2021 (October - December) $ 58 $ 10 $ 6 2022 230 37 27 2023 230 37 27 2024 230 37 27 2025 230 37 27 Thereafter 2,420 55 279 Total amortization expense $ 3,398 $ 213 $ 393

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	7. Income Taxes The Company’s effective tax rate for the Successor three months ended September 30, 2021 was 0%, and for the Predecessor six months ended June 30, 2021 was 17%. The Company’s effective tax rate for the Predecessor three months ended September 2020 was 74% and for the Predecessor nine months ended September 30, 2020 was 16%. The change in the effective tax rate is primarily driven by the Business Combination as the Predecessor and certain of its subsidiaries operated in the U.S. as partnerships for income tax purposes and generally as corporate entities in non-U.S. jurisdictions. The Predecessor effective tax rate for the applicable periods was substantially lower due to the fact that certain subsidiaries are subject to federal, state, local and foreign income taxes (as applicable). The effective tax rate for the Successor three months ended September 30, 2021 is lower than the 21% U.S. statutory corporate income tax rate primarily due to non-recurring non-deductible items related to the Business Combination.

Debt

Debt	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Debt	8. Debt Debt outstanding consisted of the following (in millions): Predecessor December 31, Maturity Date 2020 Term Loan May 1, 2024 $ 634 Term Loan, Amended October 31, 2026 1,976 Secured Senior Notes June 1, 2025 300 Unsecured Senior Notes June 1, 2025 1,230 $24m Revolving Credit Facility May 1, 2022 — $226m Revolving Credit Facility, Amended October 31, 2024 — Other December 31, 2021 10 Total gross debt 4,150 Less: term loan and senior note financing fees and premium, net (72 ) Total debt, net 4,078 Less: current portion of long term debt, net (37 ) Total long term debt, net $ 4,041 Successor September 30, Maturity Date 2021 Term Loan May 1, 2024 $ 73 Term Loan, Amended October 31, 2026 1,963 Term Loan, Third Incremental (1) August 31, 2028 519 Secured Senior Notes June 1, 2025 315 $294m Revolving Credit Facility, Amended August 31, 2026 — Other December 31, 2021 12 Total debt, net 2,882 Less: current portion of long term debt, net (43 ) Total long term debt, net $ 2,839 (1) Purchase Accounting As part of purchase accounting for the Business Combination, the debt obligations assumed were recorded at fair value, under ASC 805, which resulted in an aggregate increase in the debt liability of $60 million. The fair value increase will be amortized over the respective terms of the debt obligations and recorded in Interest expense on the Condensed Consolidated Statements of Comprehensive Income (Loss) (See Note 4 “Acquisitions”). Term Loan In May 2017, the Company entered into a 7-year Initial Term Loan. During November 2017 and November 2019, the Company entered into Incremental Term Loans under identical terms as the Initial Term Loan. In August 2020, the Company refinanced the Term Loan by paying down $270 million of principal using the proceeds from the August 2020 Unsecured Senior Notes issuance, extending the maturity date on $1,986 million of the balance to October 31, 2026, and adding an interest rate floor of 50 bps. As part of the consideration transferred in the Business Combination, $556 million of principal was repaid on the portion of the Term Loan that was not amended. In August 2021, the Company entered into a new Third Incremental Term Loan facility for $525 million that matures August 31, 2028. Interest rates on the Term Loan borrowings are based on the London Interbank Offered Rate (“LIBOR”) subject to a 50 bps interest rate floor in respect of the Amended and Third Incremental Loans, plus a margin based on defined ratios; 275 or 300 bps for the Term Loan, 325 or 350 bps for the amended Term Loan, and 300 bps for the Third Incremental Term Loan. The Company used the 1‑month LIBOR rate for all periods presented. The Company is required to make principal payments at the end of each fiscal quarter based on defined terms in the agreement with the remaining principal balances due on the maturity dates. The first mandatory principal payment for the Third Incremental Term Loan is due December 31, 2021. During the Successor three months ended September 30, 2021 and the Predecessor six months ended June 30, 2021, and three and nine months ended September 30, 2020, the Company made total principal payments of $563 million, $13 million, $277 million and $291 million. The Company utilized swap agreements to fix a portion of the floating interest rates to May 2024 (see Note 13 “Derivative Financial Instruments”). Secured Senior Notes During May 2020, the Company issued $300 million of Secured Senior Notes. These Secured Senior Notes have a maturity date of June 1, 2025 and accrue interest at a fixed rate of 5.75% per annum, payable semi-annually on June 1 and December 1 of each year, beginning on December 1, 2020. Unsecured Senior Notes In May 2017, the Company issued $500 million of Initial Unsecured Senior Notes. During November 2017, July 2019, and August 2020, the Company issued additional Unsecured Senior Notes under identical terms as the Initial Unsecured Senior Notes for $180 million, $280 million, and $270 million, respectively (collectively “Unsecured Senior Notes”). The Unsecured Senior Notes had a maturity date of June 1, 2025 and accrue interest at a fixed rate of 6.750% per annum, payable semi-annually on June 1 and December 1 of each year. As part of the consideration transferred in the Business Combination, the Unsecured Senior Notes were fully redeemed. Revolving Credit Facility In May 2017, the Company entered into a 5-year $250 million Revolver with a multi-bank syndicate with a maturity date of May 1, 2022. During August 2020, the Company extended the maturity date for $226 million of the Revolver to October 31, 2024. In August 2021, the Company replaced and refinanced the Revolver s with a $ 294 million Revolver with a maturity date of August 31, 2026 . At September 3 0 , 2021, $ 4 million of unused letters of credit related to various insurance policies and real estate leases were issued under the Revolver and there were no additional borrowings. The Company is required to make periodic payments for commitment fees and interest related to the Revolver and outstanding letters of credit. During the Successor three months ended September 3 0 , 2021 and the Predecessor six months ended June 30, 2021 and the three and nine months ended September 30, 2020 the Company made immaterial payments related to these fees. As part of the acquisition of NGA HR during the year ended December 31, 2019, the Company acquired a revolving credit facility of approximately $21 million secured on the accounts receivable balance of NGA HR. As of September 30, 2021, the outstanding borrowings under this facility were $12 million, which are reflected in Other in the table above. The facility matures on December 31, 2021, at which time any outstanding borrowings are repayable in full, with interest payable monthly. Interest is calculated as LIBOR plus 3.5% per annum. Financing Fees, Premiums and Interest Expense The Company capitalized financing fees and premiums related to the Term Loan, Revolver and Secured Senior Notes issued. These financing fees and premiums were recorded as an offset to the aggregate debt balances and are being amortized over the respective loan terms. The unamortized financing fees and premiums related to the $556 million payment of the Term Loan in July 2021 and the redemption of the Unsecured Senior Notes in July 2021, were written down as part of the purchase accounting for the Business Combination. For the Successor three months ended September 30, 2021, a $1 million benefit was recorded, for the Predecessor six months ended June 30, 2021, and three and nine months ended September 30, 2020, expenses of $8 million, $4 million and $13 million, respectively, were amortized and recorded in Interest expense in the Condensed Consolidated Statements of Comprehensive Income (Loss). As part of the purchase accounting for the Business Combination, the unamortized financing fees related to the Revolver were written off. In August 2021, $1 million of fees associated with the refinanced Revolver were capitalized. As the Revolver has no outstanding balance as of September 30, 2021, the related $1 million of financing fees are recorded in Other assets and are being amortized on a straight-line basis over the term of the Revolver. The straight-line amortization is immaterial each year. Amortization for all periods was recorded in Interest expense in the Condensed Consolidated Statements of Comprehensive Income (Loss). As of September 30, 2021, immaterial and $1 million of unamortized financing fees related to the Revolver are recorded in Other current assets and Other assets, respectively, on the Condensed Consolidated Balance Sheets. As of December 31, 2020, $1 million and $1 million of unamortized financing fees related to the Revolver are recorded in Other current assets and Other assets, respectively, on the Condensed Consolidated Balance Sheets. Total interest expense related to the debt instruments for the Successor three months ended September 30, 2021 and Predecessor six months ended June 30, 2021 and three and nine months ended September 30, 2020 was $25 million, $105 million, $51 million and $151 million, respectively, which included amortization of financing fees of $1 million benefit for the Successor three months ended September 30, 2021 and expenses of approximately $8 million, $4 million and $13 million, for the Predecessor six months ended June 30, 2020 and three and nine months ended September 30, 2020, respectively. Interest expense is recorded in Interest expense in the Condensed Consolidated Statements of Comprehensive Income (Loss). Principal Payments Aggregate contractual principal payments as of September 30, 2021 are as follows (in millions): Remainder of 2021 (October - December) $ 19 2022 32 2023 32 2024 84 2025 325 Thereafter 2,378 Total payments $ 2,870

Stockholders' and Members' Equi

Stockholders' and Members' Equity	9 Months Ended
	Sep. 30, 2021
Equity [Abstract]
Stockholders' and Members' Equity	9. Stockholders’ and Members’ Equity Predecessor Equity Class A Common Units There were no grants of Class A common units during the six months ended June 30, 2021 or the nine months ended September 30, 2020. Each holder of Class A common units is entitled to one vote per unit. Class A-1 Common Units During the six months ended June 30, 2021, the Company granted 643 Restricted Class A-1 common units. There were no grants of Class A-1 common units during the nine months ended September 30, 2020. Holders of Class A-1 common units are not entitled to voting rights. Class B Common Units During the six months ended June 30, 2021 there were no grants of Class B common units, and during the nine months ended September 30, 2020 the Company granted 6,409 units. Holders of Class B common units are not entitled to voting rights. Successor Equity Preferred Stock Upon the Closing of the Business Combination, 1,000,000 preferred shares, par value $0.0001, were authorized. There are no preferred shares issued and outstanding as of September 30, 2021. Class A Common Stock As of September 30, 2021, 446,802,741 Class A common shares, including 7,821,091 of unvested Class A common shares, were legally issued and outstanding, par value $0.0001. Holders of Class A Common Shares are entitled to one vote per share, and together with the holders of shares of Company Class B Common Stock, will participate ratably in any dividends that may be declared by the Company’s Board of Directors. Class B Common Stock Upon the Closing of the Business Combination, the Seller Earnouts resulted in the issuance of a total of 14,999,998 Class B instruments (including 850,416 Unvested Class B common shares related to employee compensation) to the equityholders of the Predecessor. The equityholders of the Predecessor that exchanged their Predecessor Class A units for Alight Class A common shares in the Business Combination received Class B common shares, and the equityholders of the Predecessor that continue to hold Class A units of Alight Holdings (“Continuing Unitholders”) received Class B common units of Alight Holdings. The Class B Common Stock and Class B common units are not entitled to a vote and accrue dividends equal to amounts declared per corresponding Class A common share and Class A unit; however, such dividends are paid if and when such Class B share or Class B unit converts into a Class A share or Class A unit. If any of the Class B common shares or Class B common units do not vest on or before the seventh anniversary of the Closing Date, such shares or units will be automatically forfeited and T hese Class B instruments (excluding the Unvested B common shares related to employee compensation) are liability classified; refer to Note 14 “Financial Instruments” for additional information. As further described below, there are two series of Class B instruments outstanding. Class B-1 As of September 30, 2021, 4,990,453 Class B-1 common shares were legally issued and outstanding, par value of $0.0001, including 425,208 Unvested Class B-1 common shares related to employee compensation. Class B-1 common shares vest and automatically convert into shares of Class A Common Stock on a 1-for-1 basis if the volume weighted average price (“VWAP”) of the Class A common shares equals or exceeds $12.50 per share for 20 or more trading days within a consecutive 30-trading day period (or in the event of a change of control or liquidation event that implies a $12.50 per share valuation on a diluted basis). To the extent any Unvested Class B-1 common share automatically converts into a share of Class A Common Stock, (i) such share or unit shall remain unvested in accordance with the terms and conditions of the applicable award agreement until it vests or is forfeited in accordance with the terms thereof and (ii) such share or unit shall be treated as Unvested Class A consideration as if such share or unit was part of the Unvested Class A consideration as of the Closing Date. As of September 30, 2021, 2,509,546 Class B-1 common units of Alight Holdings were legally issued and outstanding. Class B-1 common units vest and automatically convert into Class A common units of Alight Holdings on a 1 -for-1 basis if the VWAP of the Class A common shares equals or exceeds $ 12.50 per share for 20 or more trading days within a consecutive 30 -trading day period (or in the event of a change of control or liquidation event that implies a $ 12.50 per share valuation on a diluted basis) . Class B-2 As of September 30, 2021, 4,990,453 Class B-2 common shares were legally issued and outstanding, par value of $0.0001, including 425,208 Unvested Class B-2 common shares related to employee compensation. Class B-2 common shares vest and automatically convert into shares of Class A common shares on a 1-for-1 basis if the VWAP of the Class A common shares equals or exceeds $15.00 per share for 20 or more trading days within a consecutive 30-trading day period (or in the event of a change of control or liquidation event that implies a $15.00 per share valuation on a diluted basis). To the extent any Unvested Class B-2 common share automatically converts into a share of Class A Common Stock, (i) such share or unit shall remain unvested in accordance with the terms and conditions of the applicable award agreement until it vests or is forfeited in accordance with the terms thereof and (ii) such share or unit shall be treated as Unvested Class A consideration as if such share or unit was part of the Unvested Class A consideration as of the Closing Date. As of September 30, 2021, 2,509,546 Class B-2 common units of Alight Holdings were legally issued and outstanding. Class B-2 common units vest and automatically convert into Class A common units of Alight Holdings on a 1-for-1 basis if the VWAP of the Class A common shares equals or exceeds $15.00 per share for 20 or more trading days within a consecutive 30-trading day period (or in the event of a change of control or liquidation event that implies a $15.00 per share valuation on a diluted basis). Class B-3 Upon the Closing of the Business Combination, 10,000,000 Class B-3 common shares, par value $0.0001 per share, were authorized. There are no Class B-3 common shares issued and outstanding as of September 30, 2021. Class V Common Stock As of September 30, 2021, 77,459,687 Class V common shares were legally issued and outstanding, par value of $0.0001. Holders of Class V Common Stock are entitled to one vote per share and have no economic rights. The Class V Common Stock is held on a 1-for-1 basis with Class A Units in Alight Holdings held by Continuing Unitholders. The Class A Units, together with an equal number of shares of Company Class V Common Stock, can be exchanged for an equal number of shares of Company Class A Common Stock. Class Z Common Stock Upon the Closing of the Business Combination, a total of 8,671,507 Class Z instruments were issued to the equityholders of the Predecessor. The equityholders of the Predecessor that exchanged their Predecessor Class A units for Alight Class A common shares in the Business Combination received Class Z common shares, and the Continuing Unitholders received Class Z common units of Alight Holdings. The Class Z instruments were issued to the equityholders of the Predecessor to allow for the re-allocation of the consideration paid to the holders of unvested management equity (i.e., the Unvested Class A, Unvested Class B-1, and Unvested Class B-2 common shares) to the equityholders of the Predecessor in the event such equity is forfeited under the terms of the applicable award agreement and will only vest in connection with any such forfeiture. As of September 30, 2021, 5,595,577 Class Z common shares (5,046,819 Class Z-A, 274,379 Class Z-B-1, and 274,379 Class Z-B-2) were legally issued and outstanding, par value of $0.0001. Holders of Class Z-A, Class Z-B-1 and Class Z-B-2 common shares are not entitled to voting rights. A portion automatically converts into shares of Company Class A Common Stock, Company Class B-1 or Company Class B-2 Common Stock, as applicable, in connection with the forfeiture of the Unvested Class A, Unvested Class B-1, and Unvested Class B-2 common shares issued to participating management holders. As of September 30, 2021, 3,075,930 Class Z common units (2,774,272 Class Z-A, 150,829 Class Z-B-1, and 150,829 Class Z-B-2) were legally issued and outstanding. Holders of Class Z-A, Class Z-B-1 and Class Z-B-2 common units are not entitled to voting rights. A portion automatically converts into units of Alight Holdings Class A common units, Alight Holdings Class B-1 or Alight Holdings Class B-2 common units, as applicable, in connection with the forfeiture of the Unvested Class A, Unvested Class B-1, and Unvested Class B-2 common shares issued to participating management holders. Class A Units Holders of Alight Holdings Class A units can exchange all or any portion of their Class A units, together with the cancellation of an equal number of shares of Alight Class V Common Stock, for a number of shares of Alight Class A Common Stock equal to the number of exchanged Class A units. Alight has the option to cash settle any future exchange. The Continuing Unitholders’ ownership of Class A units represents the noncontrolling interest of the Company, which is accounted for as permanent equity on the Condensed Consolidated Balance Sheets. As of September 30, 2021, there were 524,262,428 Class A Units outstanding, of which 446,802,741 are held by the Company and 77,459,687 are held by the noncontrolling interest of the Company. The Alight Holdings Operating Agreement contains provisions which require that a one-to-one ratio is maintained between each class of Alight Holdings units held by Alight and its subsidiaries (including the FTAC Surviving Corporation and the Alight Blockers, but excluding subsidiaries of Alight Holdings) and the number of outstanding shares of the corresponding class of Alight common stock, subject to certain exceptions (including in respect of management equity in the form of options, rights or other securities which have not been converted into or exercised for Alight common stock). In addition, the Alight Holdings Operating Agreement permits Alight, in its capacity as the managing member of Alight Holdings, to take actions to maintain such ratio, including undertaking stock splits, combinations, recapitalizations and exercises of the exchange rights of holders of Alight Holdings units. The following table reflects the changes in our outstanding stock: Successor Class A Class B-1 Class B-2 Class V Class Z Balance at July 1, 2021 438,968,920 4,990,453 4,990,453 77,459,687 5,595,577 Issuance for compensation to non-employees (1) 12,730 — — — — Balance at September 30, 2021 438,981,650 4,990,453 4,990,453 77,459,687 5,595,577 ( 1 ) Dividends There were no dividends declared during the Successor three months ended September 30, 2021. Accumulated Other Comprehensive Loss As of September 30, 2021, the Accumulated other comprehensive loss balance included unrealized losses for interest rate swaps and foreign currency translation adjustments related to our foreign subsidiaries that do not have the U.S. dollar as their functional currency. The tax effect for all periods presented was immaterial. Changes in accumulated other comprehensive loss, net of non-controlling interests and tax, are as follows (in millions): Predecessor Foreign Currency Interest Translation Rate Adjustments Swaps (1) Total Balance at December 31, 2020 $ 5 $ (47 ) $ (42 ) Other comprehensive income before reclassifications, net of tax 4 10 14 Amounts reclassified from accumulated other comprehensive loss, net of tax — 7 7 Net current period other comprehensive income, net of tax 4 17 21 Balance at March 31, 2021 $ 9 $ (30 ) $ (21 ) Other comprehensive income (loss) before reclassifications, net of tax 4 (1 ) 3 Amounts reclassified from accumulated other comprehensive loss, net of tax — 7 7 Net current period other comprehensive income, net of tax 4 6 10 Balance at June 30, 2021 $ 13 $ (24 ) $ (11 ) Successor Foreign Currency Interest Translation Rate Adjustments Swaps (1) Total Balance at July 1, 2021 $ — $ — $ — Other comprehensive loss before reclassifications, net of tax 2 1 3 Amounts reclassified from accumulated other comprehensive loss, net of tax — — — Net current period other comprehensive loss, net of tax 2 1 3 Balance at September 30, 2021 $ 2 $ 1 $ 3 (1)

Share-Based Compensation Expens

Share-Based Compensation Expense	9 Months Ended
	Sep. 30, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Share-Based Compensation Expense	10. Share-Based Compensation Expense Predecessor Plans Prior to the Business Combination, share-based payments to employees include grants of restricted share units (“RSUs”) and performance based restricted share units (“PRSUs”), which consist of both Class A-1 and Class B common units in each type, are measured based on their estimated grant date fair value. The Company recognizes compensation expense on a straight-line basis over the requisite service period for awards expected to ultimately vest. As a result of the change in control related to the Business Combination, the vesting of the time-based RSU Class B units accelerated on the Closing Date. The remaining unvested PRSU Class B units have vesting conditions that are contingent upon the achievement of defined internal rates of return and multiples on invested capital occurrence and of certain liquidity events. The Class A-1 RSUs and PRSUs that were unvested as of the Closing Date have time-based and/or vesting conditions that are contingent upon the achievement of defined internal rates of return and multiples on invested capital occurrence and of certain liquidity events. Both the unvested Class A-1 and Class B units were replaced with unvested Alight common shares as discussed below. The following tables summarizes the unit activity related to the RSUs and PRSUs during the Predecessor six months ended June 30, 2021: Weighted Weighted Average Average Grant Date Grant Date Fair Value Fair Value Predecessor RSUs Per Unit PRSUs Per Unit Balance as of December 31, 2020 2,999 $ 4,563 9,223 $ 4,015 Granted 254 28,875 389 24,420 Vested (517 ) 5,459 - - Forfeited (121 ) 4,527 (567 ) 2,626 Balance as of June 30, 2021 2,614 $ 6,741 9,045 $ 4,888 Successor Plans Predecessor Replacement Awards In connection with the Business Combination, the holders of certain unvested awards under the Predecessor plans were granted replacement awards in the Successor company. • Class B units: The unvested Class B units of Alight Holdings were granted replacement Unvested Class A common shares, Unvested Class B-1 common shares, and Unvested Class B-2 common shares of the Company that ultimately vest on the third anniversary of the Closing Date, but could vest earlier based on market-based vesting terms consistent to those under the Predecessor Plan. • Class A-1 units: The unvested Class A-1 units were granted replacement Unvested Class A common shares, Unvested Class B common shares, and Unvested Class B-2 common shares of the Company on an equivalent fair value basis. The time and market-based vesting conditions are consistent with those under the Predecessor Plan. The Class B and Class A-1 units that were replaced represent the Unvested Class A, Unvested Class B-1 and Unvested Class B-2 common shares subject to the forfeiture re-allocation provision per the Class Z instruments discussed in Note 9 “Stockholders’ and Members’ Equity”. These unvested shares are accounted for as restricted stock in accordance with ASC 718. Successor Awards In connection with the Business Combination, the Company adopted the Alight, Inc. 2021 Omnibus Incentive Plan. Under this plan, for grants issued during the Successor three months ended September 30, 2021, approximately 50% of the units are subject to time-based vesting requirements and approximately 50% are subject to performance-based vesting requirements. The majority of the time-based RSUs vest ratably each December 31 over a three-year The aggregate grant date fair value of RSUs and PRSUs granted during the Successor period three months ended September 30, 2021 was $116 million and $114 million, respectively. Restricted Share Units and Performance Based Restricted Share Units The following tables summarizes the unit activity related to the RSUs and PRSUs during the Successor three months ended September 30, 2021 Weighted Weighted Average Average Grant Date Grant Date Fair Value Fair Value Successor RSUs (1) Per Unit PRSUs (1) Per Unit Balance as of July 1, 2021 854,764 $ 9.91 7,816,743 $ 9.99 Granted 9,178,145 12.64 9,045,415 12.64 Vested (12,730 ) 11.48 — — Balance as of September 30, 2021 10,020,179 $ 12.41 16,862,158 $ 11.41 (1) Share-based Compensation The Company recorded the share-based compensation costs related to the RSUs and PRSUs for the Successor three months ended September 30, 2021, the Predecessor six months ended June 30, 2021, and three and nine months ended September 2020 of $15 million, $5 million, $1 million and $5 million, respectively. As of September 30, 2021, total future compensation expense related to unvested RSUs was $116 million which will be recognized over a remaining weighted-average amortization period of approximately 2.3 years. As of September 30, 2021, total future compensation expense related to PRSUs was $161 million which will be recognized over approximately the next 2.4 years.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Earnings Per Share	11. Earnings Per Share Basic earnings per share is calculated by dividing the net loss attributable to Alight, Inc. by the weighted average number of shares of Class A Common Stock issued and outstanding for the Successor period. The computation of diluted earnings per share reflects the potential dilution that could occur if dilutive securities and other contracts to issue shares were exercised or converted into shares or resulted in the issuance of shares that then would then share in the net income of Alight, Inc. The Company’s Class V Common Stock and Class Z Common Stock do not participate in the earnings or losses of the Company and are therefore not participating securities and have not been included in either the basic or diluted earnings per share calculations. In conjunction with the Business Combination, the Company issued Seller Earnouts contingent consideration, which is payable in the Company’s common stock when the related market conditions are achieved. As the related conditions to pay the consideration had not been satisfied as of the end of the Successor period, the Seller Earnouts were excluded from the diluted earnings per share calculations. Basic and diluted earnings per share are as follows (in millions, except for share and per share amounts): Successor Three Months Ended September 30, 2021 Basic and diluted net loss per share: Numerator Net loss attributable to Alight, Inc. - basic and diluted $ (107 ) Denominator Weighted average shares outstanding - basic and diluted 438,968,920 Basic and diluted net loss per share $ (0.24 ) For the Successor three months ended September 30, 2021, 77,459,687 units related to noncontrolling interests, 59,633,274 warrants, and 9,988,297 unvested RSUs, were not included in the computation of diluted shares outstanding as their impact would have been anti-dilutive. In addition, 14,999,998 shares related to the Seller Earnouts and 16,043,624 unvested PRSUs were excluded from the calculation of basic and diluted earnings per share as the market and performance conditions had not yet been met as of the end of the period .

Segment Reporting

Segment Reporting	9 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Segment Reporting	12. Segment Reporting The Company’s reportable segments have been determined using a management approach, which is consistent with the basis and manner in which the Company’s chief operating decision maker (“CODM”) uses financial information for the purposes of allocating resources and evaluating performance. The Company’s CODM is its Chief Executive Officer. The CODM evaluates the performance of the Company based on its total revenue and segment profit. The CODM also uses revenue and segment profit to manage and evaluate our business, make planning decisions, and as performance measures for Company-wide bonus plans. These key financial measures provide an additional view of our operational performance over the long-term and provide useful information that we use in order to maintain and grow our business. The accounting policies of the segments are the same as those described in Note 2 “Accounting Policies and Practices.” The Company does not report assets by reportable segments as this information is not reviewed by the CODM on a regular basis. Information regarding the Company’s current reportable segments is as follows (in millions): Revenue Successor Predecessor Three Months Ended Six Months Ended Three Months Ended Nine Months Ended September 30, June 30, September 30, September 30, 2021 2021 2020 2020 Employer Solutions Recurring $ 522 $ 1,049 $ 498 $ 1,516 Project 65 107 61 162 Total Employer Solutions 587 1,156 559 1,678 Professional Services Recurring 32 60 28 78 Project 61 124 65 194 Total Professional Services 93 184 93 272 Hosted Business 10 21 16 58 Total $ 690 $ 1,361 $ 668 $ 2,008 Segment Profit Successor Predecessor Three Months Ended Six Months Ended Three Months Ended Nine Months Ended September 30, June 30, September 30, September 30, 2021 2021 2020 2020 Employer Solutions $ 151 $ 274 $ 120 $ 389 Professional Services 4 7 12 23 Hosted Business (2 ) (3 ) — 4 Total of all reportable segments 153 278 132 416 Share-based compensation 15 5 1 5 Transaction and integration 3 — — — Non-recurring professional expenses (1) 17 18 — — Transformation initiatives (2) — — — 11 Restructuring 3 9 10 57 Other (3) 2 (5 ) 4 28 Depreciation 14 49 24 66 Intangible amortization 74 100 51 151 Operating Income 25 102 42 98 Loss from change in fair value of financial instruments 90 — — — Loss from change in fair value of tax receivable agreement 27 — — — Interest expense 28 123 61 172 Other expense (income), net — 9 3 (1 ) Loss Before Income Tax (Benefit) Expense $ (120 ) $ (30 ) $ (22 ) $ (73 ) (1) Non-recurring professional expenses primarily includes external advisor costs related to the Company’s Business Combination completed in the third quarter of 2021. (2) Transformation initiatives in fiscal year 2020 includes expenses related to enhancing our data center. (3) Other primarily includes long-term incentive expenses and expenses related to acquisitions in fiscal year 2020, offset by Other expense (income), net. There was no single client who accounted for more than 10% of the Company’s revenues in any of the periods presented.

Derivative Financial Instrument

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2021
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	13. Derivative Financial Instruments The Company is exposed to market risks, including changes in interest rates. To manage the risk related to these exposures, the Company has entered into various derivative instruments that reduce these risks by creating offsetting exposures. Interest Rate Swaps The Company has utilized swap agreements that will fix the floating interest rates associated with its Term Loan as shown in the following table: Designation Date Effective Date Initial Notional Amount Notional Amount Outstanding as of September 30, 2021 Fixed Rate Expiration Date July 2021 August 2020 557,500,000 557,500,000 2.5070 % May 2022 July 2021 August 2020 89,863,420 98,078,920 3.0854 % February 2023 July 2021 August 2020 181,205,050 168,155,300 0.7775 % May 2024 July 2021 August 2020 388,877,200 373,963,200 0.7430 % May 2024 July 2021 May 2022 220,130,318 n/a 0.5170 % May 2024 July 2021 May 2022 306,004,562 n/a 0.5127 % May 2024 Concurrent with execution of the Business Combination and the $556 million pay down of the Term Loan, three hedges were terminated, and two previously unfloored hedges were amended to incorporate an interest rate floor of 50 bps. All interest rate swaps were redesignated as cash flow hedges in accordance with ASC 805. Our swap agreements amortize or accrete based on achieving targeted hedge ratios. All interest rate swaps have been designated as cash flow hedges. As a result of the amendment, the fair value of the instruments at the time of re-designation are being amortized into interest expense over the remaining life of the instruments. Financial Instrument Presentation The fair values and location of outstanding derivative instruments recorded in the Condensed Consolidated Balance Sheets are as follows (in millions): Successor Predecessor September 30, December 31, 2021 2020 Assets Other assets $ 5 $ — Total $ 5 $ — Liabilities Other current liabilities $ 12 $ 28 Other liabilities 1 19 Total $ 13 $ 47 The Company estimates that approximately $2 million of derivative losses included in Accumulated other comprehensive loss as of September 30, 2021 will be reclassified into earnings over the next twelve months.

Financial Instruments

Financial Instruments	9 Months Ended
	Sep. 30, 2021
Financial Instruments [Abstract]
Financial Instruments	14. Financial Instruments Seller Earnouts Upon completion of the Business Combination, the equity owners of Alight Holdings received an earnout in the form of non-voting shares of Class B-1 and Class B-2 Common Stock, which automatically convert into Class A Common Stock if, at any time during the seven years following the Closing Date certain criteria a re achieved. See Note 9 “Stockholders’ and Members’ Equity” for additional information regarding the Seller Earnout s . The portion of the Seller Earnouts related to employee compensation is accounted for as share-based compensation. See Note 10 “Share-Based Compensation Expense” for additional information. The majority of the Seller Earnouts, which are not related to employee compensation, are accounted for as a contingent consideration liability at fair value within Financial instruments on the Condensed Consolidated Balance Sheets because the Seller Earnouts do not meet the criteria for classification within equity. This portion of the Seller Earnouts are subject to remeasurement at each balance sheet date and as of September 30, 2021, the Seller Earnouts had a fair value of $144 million. For the Successor three months ended September 30, 2021, a loss of $35 million was recorded in Loss from change in fair value of financial instruments in the Condensed Consolidated Statements of Comprehensive Income (Loss) . Warrants In connection with the Business Combination, the Company has issued and outstanding warrants to purchase Class A common shares at a price of $11.50 per share, subject to adjustment for stock splits and/or extraordinary dividends, as described in the warrant agreement, including 10,000,000 warrants that were issued as a result of the consummation of the Forward Purchase Agreements (“Forward Purchase Warrants”). As of September 30, 2021, there were 59,633,274 warrants outstanding, which includes 34,499,941 Public Warrants, 10,000,000 Forward Purchase Warrants, and 15,133,333 Private Warrants that were exchanged for an equivalent number of Class C Units representing limited liability company interests of Alight Holdings and will have the same terms as the Private Warrants. Each of the Public Warrants, Forward Purchase Warrants and Class C Units (collectively the “Warrants”) are exercisable for one share of Alight, Inc. Class A Common Stock. The Warrants will expire July 2, 2026, 5 years after the completion of the Business Combination and are exercisable beginning after certain lock-up periods as described in the warrant agreement. Once the warrants become exercisable, the Company may redeem for $0.01 per warrant the outstanding Public Warrants if the Company’s Class A Share price equals or exceeds $18.00 per share, subject to certain conditions and adjustments. If the Company’s Class A Share price is greater than $10.00 per share but less than $18.00 per share, then the Company may redeem Warrants for $0.10 per warrant, subject to certain conditions and adjustments. Holders may elect to exercise their warrants on a cashless basis. The Company accounts for Warrants as liabilities at fair value within Financial instruments on the Condensed Consolidated Balance Sheets because the Warrants do not meet the criteria for classification within equity. The Warrants are subject to remeasurement at each balance sheet date. Loss from change in fair value of financial instruments in the Condensed Consolidated Statements of Comprehensive Income (Loss)

Fair Value Measurement

Fair Value Measurement	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurement	15. Fair Value Measurement Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The accounting standards related to fair value measurements include a hierarchy for information and valuations used in measuring fair value that is broken down into three levels based on reliability, as follows: • Level 1 – observable inputs such as quoted prices in active markets for identical assets and liabilities; • Level 2 – inputs other than quoted prices for identical assets in active markets that are observable either directly or indirectly; and • Level 3 – unobservable inputs in which there is little or no market data which requires the use of valuation techniques and the development of assumptions. The Company’s financial assets and liabilities measured at fair value on a recurring basis are as follows (in millions): Successor September 30, 2021 Level 1 Level 2 Level 3 Total Assets Interest rate swaps $ — $ 5 $ — $ 5 Total assets recorded at fair value $ — $ 5 $ — $ 5 Liabilities Interest rate swaps $ — $ 13 $ — $ 13 Contingent consideration liability — — 29 29 Seller Earnouts liability — — 144 144 Warrant liability 182 — — 182 Tax receivable agreement liability — — 605 605 Total liabilities recorded at fair value $ 182 $ 13 $ 778 $ 973 Predecessor December 31, 2020 Level 1 Level 2 Level 3 Total Liabilities Interest rate swaps $ — $ 47 $ — $ 47 Foreign currency hedges — — — — Contingent consideration liability — — 26 26 Total liabilities recorded at fair value $ — $ 47 $ 26 $ 73 Derivatives The valuations of the derivatives intended to mitigate our interest rate risk are determined using widely accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each instrument. This analysis utilizes observable market-based inputs, including interest rate curves, interest rate volatility, or spot and forward exchange rates, and reflects the contractual terms of these instruments, including the period to maturity. In addition, credit valuation adjustments, which consider the impact of any credit enhancements to the contracts, are incorporated in the fair values to account for potential non-performance risk. Warrants The Company accounts for the Warrants for the Company’s Class A Common Stock as liabilities at fair value because the warrants do not meet the criteria for classification within equity. The provisions of all warrant agreements provide similar value to its holders; therefore, all Warrants are valued based on the closing market price of the applicable date of the Condensed Consolidated Balance Sheets, within Financial instruments. The change in the fair value of the Warrant liability is recorded in Loss from change in fair value of financial instruments in the Condensed Consolidated Statements of Comprehensive Income (Loss). Contingent Consideration The contingent consideration liabilities relate to acquisitions completed during the years ended December 31, 2020 and 2018, and are included in Other current liabilities and Other liabilities on the Condensed Consolidated Balance Sheets. The fair value of these liabilities is determined using a discounted cash flow analysis. Changes in the fair value of the liabilities are included in Other expense, net in the Condensed Consolidated Statements of Comprehensive Income (Loss). Significant unobservable inputs are used in the assessment of fair value, including assumptions regarding discount rates and probability assessments based on the likelihood of reaching the various targets set out in the acquisition agreements. The following table summarizes the changes in deferred contingent consideration liabilities (in millions): Successor Predecessor Three Months Ended Six Months Ended Three Months Ended Nine Months Ended September 30, June 30, September 30, September 30, 2021 2021 2020 2020 Beginning balance $ 29 $ 26 $ 22 $ 22 Acquisitions — 2 3 3 Accretion of contingent consideration — 1 — — Ending Balance $ 29 $ 29 $ 25 $ 25 Seller Earnouts The Company accounts for the Seller Earnouts as contingent consideration liabilities at fair value in Financial Instruments in the Condensed Consolidated Balance Sheets. The fair value of the Seller Earnouts is determined using Monte Carlo simulation and Option Pricing Methods. Changes in the fair value of the liability is included in Loss from change in fair value of financial instruments in the Condensed Consolidated Statements of Comprehensive Income (Loss). Significant unobservable inputs are used in the assessment of fair value, including the following assumptions: volatility, risk-free interest rate, expected holding period and probability assessments based on the likelihood of reaching the performance targets defined in the Business Combination. Tax Receivable Agreement In connection with the Business Combination, Alight entered into the Tax Receivable Agreement (the “TRA”) with certain owners of Alight Holdings prior to the Business Combination. Pursuant to the TRA, we will pay certain sellers, as applicable, 85% of the tax benefits, of any savings that we realize, calculated using certain assumptions, as a result of (i) tax basis adjustments from sales and exchanges of Alight Holdings equity interests in connection with or following the Business Combination and certain distributions with respect to Alight Holdings equity interests, (ii) our utilization of certain tax attributes, and (iii) certain other tax benefits related to entering into the TRA. Actual tax benefits realized by Alight may differ from tax benefits calculated under the TRA as a result of the use of certain assumptions in the TRA, including the use of an assumed weighted-average state and local income tax rate to calculate tax benefits. While the amount of existing tax basis, the anticipated tax basis adjustments and the actual amount and utilization of tax attributes, as well as the amount and timing of any payments under the TRA, will vary depending upon a number of factors, we expect that the payments that Alight may make under the TRA may be substantial. The Company’s TRA liability and Seller Earnouts liability are measured at fair value on a recurring basis using significant unobservable inputs (Level 3). The fair value of the TRA and Seller Earnouts are preliminary and the final fair value could have a material impact on the preliminary purchase price allocation disclosed. The fair values will be finalized as soon as practicable, but no later than one year from the acquisition date. The following table provides a reconciliation of the TRA liability and Seller Earnout liability for the Successor three months ended September 30, 2021: Successor TRA Seller Earnouts Liability Liability Balance at July 1, 2021 $ 578 $ 109 Loss from change in fair value of TRA 27 — Loss from change in fair value of Seller Earnouts — 35 Balance at September 30, 2021 $ 605 $ 144 Non-Recurring Fair Value Measurements The Company’s financial liabilities not measured at fair value on a recurring basis are as follows (in millions): Successor Predecessor September 30, 2021 December 31, 2020 Carrying Value Fair Value Carrying Value Fair Value Liabilities Current portion of long term debt, net $ 43 $ 43 $ 37 $ 37 Long term debt, net 2,839 2,848 4,041 4,090 Total $ 2,882 $ 2,891 $ 4,078 $ 4,127 The carrying value of the Term Loan, Secured Senior Notes and Unsecured Senior Notes include the outstanding principal balances, less any unamortized discount or premium. The carrying value of the Term Loan approximates fair value as it bears interest at variable rates and we believe our credit risk is consistent with when the debt originated. The outstanding balances under the Senior Notes have fixed interest rates and the fair value is classified as Level 2 within the fair value hierarchy and corroborated by observable market data (see Note 8 “Debt”). The carrying amounts of Cash and cash equivalents, Receivables, net and Accounts payable and accrued liabilities approximate their fair values due to the short-term maturities of these instruments. During the Successor three months ended September 30, 2021 and the Predecessor six months ended June 30, 2021, and three and nine months ended September 30, 2020 there were no

Restructuring and Integration

Restructuring and Integration	9 Months Ended
	Sep. 30, 2021
Restructuring And Related Activities [Abstract]
Restructuring and Integration	16. Restructuring and Integration During the third quarter of 2019, management initiated a restructuring and integration plan (“the Plan”) following the completion of the Hodges acquisition and in anticipation of the NGA HR acquisition, which was completed on November 1, 2019. The Plan is intended to integrate and streamline operations across the Company and is expected to generate cost reductions related to position eliminations and facility and system rationalizations. The Company expects to incur costs related to severance, contract and lease exits and other related costs. The Company expects these restructuring and integration activities and related expenses to affect continuing operations through the first quarter of 2022. The Plan is expected to result in cumulative costs of approximately $135 million through the end of the plan, consisting of approximately $80 million in severance and related benefits, and approximately $55 million in other costs, including technology realization, lease consolidation costs, advisory and consulting fees. The Plan is expected to generate annual cost savings of approximately $196 million by 2022. From the inception of the Plan through September 30, 2021, the Company has incurred total expenses of $103 million. These charges are recorded in Cost of services, exclusive of depreciation and amortization and Selling, general and administrative expenses in the Condensed Consolidated Statements of Comprehensive Income (Loss). The following table summarizes restructuring costs by type that have been incurred through September 30, 2021 and are estimated to be incurred through the end of the Plan. Estimated costs by type may be revised in future periods as these assumptions are updated: Successor Predecessor Three Months Ended Six Months Ended Estimated Estimated September 30, June 30, Inception to Remaining Total 2021 2021 Date Costs Cost (1) Employer Solutions Severance and Related Benefits $ 1 $ 6 $ 46 $ 21 $ 67 Other Restructuring Costs (2) 2 2 44 4 48 Total Employer Solutions $ 3 $ 8 $ 90 $ 25 $ 115 Professional Services Severance and Related Benefits $ — $ 1 $ 8 $ 5 $ 13 Other Restructuring Costs (2) — — 5 2 7 Total Professional Services $ — $ 1 $ 13 $ 7 $ 20 Total Restructuring Costs $ 3 $ 9 $ 103 $ 32 $ 135 (1) Actual costs, when incurred, may vary due to changes in the assumptions built into the Plan. Significant assumptions that may change when plans are finalized and implemented include, but are not limited to, changes in severance calculations, changes in the assumptions underlying sublease loss calculations due to changing market conditions, and changes in the overall analysis that might cause the Company to add or cancel component initiatives. (2) Other costs associated with the Plan primarily include consulting and legal fees and lease consolidation. As of September 30, 2021, approximately $4 million of the restructuring liability is unpaid and is recorded in Accounts payable and accrued liabilities on the Condensed Consolidated Balance Sheets. Predecessor Severance and Related Benefits Other Restructuring Costs Total Accrued restructuring liability as of December 31, 2020 $ 12 $ 3 $ 15 Restructuring charges 7 2 9 Cash payments (13 ) (5 ) (18 ) Accrued restructuring liability as of June 30, 2021 $ 6 $ — $ 6 Successor Severance and Related Benefits Other Restructuring Costs Total Accrued restructuring liability as of July 1, 2021 $ 6 $ — $ 6 Restructuring charges 1 2 3 Cash payments (3 ) (2 ) (5 ) Accrued restructuring liability as of September 30, 2021 $ 4 $ — $ 4

Employee Benefits

Employee Benefits	9 Months Ended
	Sep. 30, 2021
Compensation And Retirement Disclosure [Abstract]
Employee Benefits	17. Employee Benefits Defined Contribution Savings Plans Certain of the Company’s employees participate in a defined contribution savings plan sponsored by the Company. For the Successor three months ended September 30, 2021 and the Predecessor six months ended June 30, 2021 and three and nine months ended September 30, 2020, expenses were $11 million, $31 million, $9 million and $38 million, respectively. Expenses were recognized in Cost of services, exclusive of depreciation and amortization and Selling, general and administrative expenses in the Condensed Consolidated Statements of Comprehensive Income (Loss).

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2021
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	18. Commitments and Contingencies Legal The Company is subject to various claims, tax assessments, lawsuits, and proceedings that arise in the ordinary course of business relating to the delivery of our services and the effectiveness of our technologies. The damages claimed in these matters are or may be substantial. Accruals for any exposures, and related insurance or other receivables, when applicable, are included on the Condensed Consolidated Balance Sheets and have been recognized in Selling, general and administrative expenses in the Condensed Consolidated Statements of Comprehensive Income (Loss) to the extent that losses are deemed probable and are reasonably estimable. These amounts are adjusted from time to time as developments warrant. Management believes that the reserves established are appropriate based on the facts currently known. The reserves recorded at September 30, 2021 and December 31, 2020 were not significant. Guarantees and Indemnifications The Company provides a variety of service performance guarantees and indemnifications to its clients. The maximum potential amount of future payments represents the notional amounts that could become payable under the guarantees and indemnifications if there were a total default by the guaranteed parties, without consideration of possible recoveries under recourse provisions or other methods. These notional amounts may bear no relationship to the future payments that may be made, if any, for these guarantees and indemnifications. To date, the Company has not been required to make any payment under any client arrangement as described above. The Company has assessed the current status of performance risk related to the client arrangements with performance guarantees and believes that any potential payments would be immaterial to the Condensed Consolidated Financial Statements. Purchase Obligations The Company’s expected cash outflow for non-cancellable purchase obligations related to purchases of information technology assets and services is $6 million, $26 million, $26 million, $27 million, $9 million, and $7 million, for the remainder of 2021 and the years ended 2022, 2023, 2024, 2025, and thereafter, respectively. Service Obligations On September 1, 2018, the Company executed an agreement to form a strategic partnership with Wipro, a leading global information technology, consulting and business process services company. The Company’s expected cash outflow for non-cancellable service obligations related to our strategic partnership with Wipro is $34 million, $141 million, $147 million, $154 million, $162 million and $502 million for the remainder of 2021 and the years ended 2022, 2023, 2024, 2025 and thereafter, respectively. The Company may terminate its arrangement with Wipro for cause or for the Company’s convenience. In the case of a termination for convenience, the Company would be required to pay a termination fee, including certain of Wipro’s unamortized costs, plus 25% of any remaining portion of the minimum level of services the Company agreed to purchase from Wipro over the course of 10 years.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	19. Subsequent Events In October 2021 In October 2021 In August 2021, the Company entered into an incremental Term Loan facility in the amount of $525 million to be used for both acquisitions and general corporate purposes, as disclosed in the notes above. Events and transactions occurring through the date of issuance of these financial statements have been evaluated by management and, when appropriate, recognized or disclosed in the financial statements or the notes to the Condensed Consolidated Financial Statements.

Accounting Policies and Pract_2

Accounting Policies and Practices (Policies)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation As a result of the Business Combination, for accounting purposes, the Company is the acquirer and Alight Holdings is the acquiree and accounting predecessor. While the Closing Date was July 2, 2021, we have determined that as the impact of one day would be immaterial to the results of operations, we will utilize July 1, 2021 as the date of the Business Combination for accounting purposes. Therefore, the financial statement presentation includes the financial statements of Alight Holdings as Predecessor for the periods prior to July 1, 2021 and the Company as Successor for the periods after July 1, 2021, including the consolidation of Alight Holdings. The accompanying unaudited Condensed Consolidated Financial Statements have been prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) for interim financial information and should be read in conjunction with the Consolidated Financial Statements contained in the Company’s Registration Statement on Form S-1 filed on August 2, 2021, as amended. In the opinion of management, all adjustments, including normal recurring adjustments, considered necessary for a fair presentation have been included. All significant intercompany transactions and balances have been eliminated upon consolidation. The results of operations for interim periods are not necessarily indicative of the results to be expected for future quarters or for the full fiscal year ending December 31, 2021.
Use of Estimates	Use of Estimates The preparation of the accompanying Condensed Consolidated Financial Statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosures of contingent assets and liabilities at the date of the financial statements, and the reported amounts of reserves and expenses. These estimates and assumptions are based on management’s best estimates and judgments. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment. Management believes its estimates to be reasonable given the current facts available. Management adjusts such estimates and assumptions when facts and circumstances dictate. Illiquid credit markets, volatile equity markets, and foreign currency exchange rate movements increase the uncertainty inherent in such estimates and assumptions. As future events and their effects cannot be predicted with certainty, actual results could differ significantly from these estimates. Changes in estimates resulting from continuing changes in the economic environment would, if applicable, be reflected in the financial statements in future periods.
Concentration of Risk	Concentration of Risk The Company has no significant off-balance sheet risks related to foreign exchange contracts or other foreign hedging arrangements. Management believes that its account receivable credit risk exposure is limited, and the Company has not experienced significant write-downs in its accounts receivable balances. Additionally, there was no single client who accounted for more than 10% of the Company’s revenues in any of the periods presented.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents include cash balances. At September 30, 2021 and December 31, 2020, Cash and cash equivalents totaled $769 million and $506 million, respectively, and none of the balances were restricted as to its use.
Fiduciary Assets and Liabilities	Fiduciary Assets and Liabilities Some of the Company’s agreements require it to hold funds to pay certain obligations on behalf of its clients. Funds held on behalf of clients are segregated from Company funds, and their use is restricted to the payment of obligations on behalf of clients. There is typically a short period of time between when the Company receives funds and when it pays obligations on behalf of clients. These funds are recorded as Fiduciary assets with the related obligation recorded as Fiduciary liabilities in the Condensed Consolidated Balance Sheets.
Commissions Receivable	Commissions Receivable Commissions receivable, which is recorded in Other current assets and Other assets in the Condensed Consolidated Balance Sheets, are contract assets that represent estimated variable consideration for commissions to be received from insurance carriers for performance obligations that have been satisfied. The current portion of Commissions receivable is expected to be received within one year, while the non-current portion of Commissions receivable is expected to be received beyond one year.
Allowance for Expected Credit Losses	Allowance for Expected Credit Losses The Company’s allowance for expected credit losses with respect to trade receivables and contract assets is based on a combination of factors, including evaluation of historical write-offs, current conditions and reasonable economic forecasts that affect collectability and other qualitative and quantitative analysis. Receivables, net included an allowance for expected credit losses of $4 million and $15 million at September 30, 2021 and December 31, 2020, respectively.
Fixed Assets, Net	Fixed Assets, Net The Company records fixed assets at cost. We compute depreciation and amortization using the straight-line method on the estimated useful lives of the assets, which are generally as follows: Asset Description Asset Life Capitalized software Lesser of the life of an associated license, or 4 to 7 years Leasehold improvements Lesser of estimated useful life or lease term, not to exceed 10 years Furniture, fixtures and equipment 4 to 10 years Computer equipment 4 to 6 years
Goodwill and Intangible Assets, Net	Goodwill and Intangible Assets, Net In applying the acquisition method of accounting for business combinations, amounts assigned to identifiable assets and liabilities acquired were based on estimated fair values as of the date of acquisition, with the remainder recorded as goodwill. Intangible assets are initially valued at fair value using generally accepted valuation methods appropriate for the type of intangible asset. Intangible assets with definite lives are amortized over their estimated useful lives and are reviewed for impairment if indicators of impairment arise. Goodwill is tested for impairment annually as of October 1, and whenever indicators of impairment arise .
Derivatives	Derivatives The Company uses derivative financial instruments, such as interest rate swaps. Interest rate swaps are used to manage interest risk exposures and have been designated as cash flow hedges. The changes in the fair value of derivatives that qualify for hedge accounting as cash flow hedges are recorded in Accumulated other comprehensive loss. Amounts are reclassified from Accumulated other comprehensive loss into earnings when the hedge exposure affects earnings. The Company discontinues hedge accounting prospectively when: (1) the derivative expires or is sold, terminated, or exercised; (2) the qualifying criteria are no longer met; or (3) management removes the designation of the hedging relationship.
Foreign Currency	Foreign Currency Certain of the Company’s non-U.S. operations use their respective local currency as their functional currency. The operations that do not have the U.S. dollar as their functional currency translate their financial statements at the current exchange rates in effect at the balance sheet date and revenues and expenses using rates that approximate those in effect during the period. The resulting translation adjustments are included in net foreign currency translation adjustments within the Condensed Consolidated Statements of Stockholders’ Equity. Gains and losses from the remeasurement of monetary assets and liabilities that are denominated in a non-functional currency are included in Other expense, net within the Condensed Consolidated Statements of Comprehensive Income (Loss). The impact of the foreign exchange gains and losses for the Successor three months ended September 30, 2021 was a gain of $1 million. The impact of the foreign exchange gains and losses for the Predecessor six months ended June 30, 2021 and three and nine months ended September 30, 2020 were a loss of $9 million, a loss of $3 million, and a gain of $2 million, respectively.
Share-Based Compensation Costs	Share-Based Compensation Costs Share-based payments to employees, including grants of restricted share units (“RSUs”) and performance-based restricted share units (“PRSUs”), for both the Predecessor and Successor periods, are measured based on their estimated grant date fair value. The Company recognizes compensation expense on a straight-line basis over the requisite service period for awards expected to ultimately vest. Forfeitures are estimated on the date of grant and revised if actual or expected forfeiture activity differs materially from original estimates.
Earnings Per Share	Earnings Per Share Basic earnings per share is calculated by dividing the net loss attributable to Alight, Inc. by the weighted average number of shares of Class A Common Stock issued and outstanding for the Successor period. The computation of diluted earnings per share reflects the potential dilution that could occur if dilutive securities and other contracts to issue shares were exercised or converted into shares or resulted in the issuance of shares that would then share in the net income of the Alight, Inc.
Warrants	Warrants Warrant agreements related to warrants to purchase the Company’s Class A Common Stock are accounted for as liabilities at fair value within Financial instruments on the Condensed Consolidated Balance Sheets and are subject to remeasurement at each balance sheet date. Any change in fair value is recognized within the Condensed Consolidated Statements of Comprehensive Income (Loss).
Tax Receivable Agreement	Tax Receivable Agreement In connection with the Business Combination, we entered into a Tax Receivable Agreement (the “TRA”) with certain of our pre-Business Combination owners that provides for the payment by Alight to such owners of 85% of the benefits that Alight is deemed to realize as a result of the Company’s share of existing tax basis acquired in the Business Combination and other tax benefits related to entering into the TRA. The Company accounts for the TRA as a liability at fair value and is subject to remeasurement at each balance sheet date. Any change in fair value is recognized within the Condensed Consolidated Statements of Comprehensive Income (Loss).
Seller Earnouts	Seller Earnouts Upon completion of the Business Combination, we executed a contingent consideration agreement (the “Seller Earnouts”) that results in the issuance of non-voting shares of Class B-1 and Class B-2 Common Stock, which automatically converts into Class A Common Stock upon the achievement of certain criteria. The majority of the Seller Earnouts are accounted for as a contingent consideration liability at fair value within Financial instruments on the Condensed Consolidated Balance Sheets and are subject to remeasurement at each balance sheet date. Any change in fair value is recognized within the Condensed Consolidated Statements of Comprehensive Income (Loss).
Noncontrolling Interest	Noncontrolling Interest Noncontrolling interest represents the Company’s noncontrolling interest in consolidated subsidiaries which are not attributable, directly or indirectly, to the controlling Class A Common Stock ownership of the Company. Net (loss) income is reduced by the portion of net (loss) income that is attributable to noncontrolling interests. These noncontrolling interests are convertible into Class A Common Stock of the Company at the holder’s discretion.
Income Taxes	Income Taxes During the Predecessor periods, a portion of the Company’s earnings were subject to certain U.S. federal, state and foreign taxes. During the Successor period, the portion of earnings allocable to the Company is subject to corporate level tax rates at the U.S. federal, state and local levels. Therefore, the amount of income taxes recorded in the Predecessor periods are not representative of the expenses expected in the future. The computation of the effective tax rate and provision at each interim period requires the use of certain estimates and significant judgment including, but not limited to, the expected operating income for the year, projections of the proportion of income that is subject to tax, permanent differences between the Company’s U.S. GAAP earnings and taxable income, and the likelihood of recovering deferred tax assets existing as of the balance sheet date. The estimates used to compute the provision for income taxes may change throughout the year as new events occur, additional information is obtained or as tax laws and regulations change. Accordingly, the effective tax rate for future interim periods may vary materially. The Company accounts for income taxes pursuant to the asset and liability method which requires it to recognize current tax liabilities or receivables for the amount of taxes it estimates are payable or refundable for the current year, deferred tax assets and liabilities for the expected future tax consequences attributable to temporary differences between the financial statement carrying amounts and their respective tax bases of assets and liabilities and the expected benefits of net operating loss and credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in operations in the period enacted. A valuation allowance is provided when it is more likely than not that a portion or all of a deferred tax asset will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income and the reversal of deferred tax liabilities during the period in which related temporary differences become deductible. The Company recognizes the benefits of tax return positions in the financial statements if it is “more-likely-than-not” they will be sustained by a taxing authority. The measurement of a tax position meeting the more-likely-than-not criteria is based on the largest benefit that is more than 50 percent likely to be realized. Only information that is available at the reporting date is considered in the Company’s recognition and measurement analysis and events or changes in facts and circumstances are accounted for in the period in which the event or change in circumstance occurs.
New Accounting Pronouncements: Recently Adopted	New Accounting Pronouncements: Recently Adopted Reference Rate Reform In March 2020, the FASB issued ASU 2020-04, “ Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting Callable Debt Securities In October 2020, the FASB issued ASU 2020-08, “ Codification Improvements to Subtopic 310-20 – Receivables – Nonrefundable Fees and Other Costs.
Fair Value Measurement	Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The accounting standards related to fair value measurements include a hierarchy for information and valuations used in measuring fair value that is broken down into three levels based on reliability, as follows: • Level 1 – observable inputs such as quoted prices in active markets for identical assets and liabilities; • Level 2 – inputs other than quoted prices for identical assets in active markets that are observable either directly or indirectly; and • Level 3 – unobservable inputs in which there is little or no market data which requires the use of valuation techniques and the development of assumptions.

Accounting Policies and Pract_3

Accounting Policies and Practices (Tables)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Summary of Estimated Useful Lives of Assets	The Company records fixed assets at cost. We compute depreciation and amortization using the straight-line method on the estimated useful lives of the assets, which are generally as follows: Asset Description Asset Life Capitalized software Lesser of the life of an associated license, or 4 to 7 years Leasehold improvements Lesser of estimated useful life or lease term, not to exceed 10 years Furniture, fixtures and equipment 4 to 10 years Computer equipment 4 to 6 years

Acquisitions (Tables)

Acquisitions (Tables)	9 Months Ended
	Sep. 30, 2021
Business Combinations [Abstract]
Summary of Preliminary Consideration Transferred	The following table summarizes the preliminary consideration transferred (in millions): Cash consideration to prior equityholders (1) $ 1,055 Repayment of debt 1,814 Total cash consideration $ 2,869 Continuing unitholders rollover equity into the Company (2) 1,414 Contingent consideration - Tax Receivable Agreement (3) 578 Contingent consideration - Seller Earnouts (3) 109 Total consideration transferred $ 4,970 Noncontrolling interest (4) $ 838 (1) ( 2 ) ( 3 ) ( 4 )
Summary of Preliminary Purchase Price allocation	The following table summarizes the preliminary purchase price allocation (in millions): Cash and cash equivalents $ 460 Receivables 486 Fiduciary assets 1,015 Other current assets 159 Fixed assets 206 Deferred tax assets, net 4 Other assets 440 Accounts payable and accrued liabilities (327 ) Fiduciary liabilities (1,015 ) Other current liabilities (302 ) Debt assumed (2,370 ) Other liabilities (381 ) Intangible assets 4,078 Total identifiable net assets $ 2,453 Goodwill $ 3,356
Summary of Preliminary Values Allocated to Identifiable Intangible Assets and Estimated Useful Lives	Intangible assets were identified that met either the separability criterion or the contractual-legal criterion described in ASC 805. The trade name intangible asset represents the corporate Alight tradename, which was valued using the relief-from-royalty method. The technology related intangible assets represent software developed by Alight Holdings to differentiate its product/service offerings for its customers, valued using the relief-from-royalty method. The customer related and contract based intangible assets represent strong, long-term relationships with customers, valued using the multi-period excess earnings method. The preliminary values allocated to identifiable intangible assets and their estimated useful lives are as follows: Fair value Useful life Identifiable intangible assets (in millions) (in years) Definite lived trade names $ 400 15 Technology related intangibles $ 222 6 Customer related and contract based intangibles $ 3,456 15
Summary of Unaudited Pro forma Financial Information	The unaudited pro forma financial information is as follows (in millions): Three Months Ended Nine Months Ended September 30, September 30, 2021 2020 2021 2020 Pro forma revenue $ 690 $ 668 $ 2,051 $ 2,008 Pro forma net loss $ (111 ) $ (70 ) $ (121 ) $ (136 ) Pro forma net loss attributable to controlling interest $ (99 ) $ (56 ) $ (107 ) $ (111 ) Pro forma net loss attributable to noncontrolling interest $ (12 ) $ (14 ) $ (14 ) $ (25 )

Other Financial Data (Tables)

Other Financial Data (Tables)	9 Months Ended
	Sep. 30, 2021
Other Financial Data [Abstract]
Summary of Components of Receivables, Net	The components of Receivables, net are as follows (in millions): Successor Predecessor September 30, December 31, 2021 2020 Billed and unbilled receivables $ 509 $ 547 Allowance for expected credit losses (4 ) (15 ) Balance at end of period $ 505 $ 532
Summary of Components of Other Current Assets	The components of Other current assets are as follows (in millions): Successor Predecessor September 30, December 31, 2021 2020 Deferred project costs $ 39 $ 53 Prepaid expenses 65 57 Commissions receivable 35 32 Other 33 21 Total $ 172 $ 163
Summary of Components of Other Assets	The components of Other assets are as follows (in millions): Successor Predecessor September 30, December 31, 2021 2020 Deferred project costs $ 252 $ 228 Operating lease right of use asset 144 129 Commissions receivable 33 25 Other 27 26 Total $ 456 $ 408
Summary of Components of Fixed Assets, Net	The components of Fixed assets, net are as follows (in millions): Successor Predecessor September 30, December 31, 2021 2020 Capitalized software $ 40 $ 242 Leasehold improvements 39 63 Computer equipment 98 192 Furniture, fixtures and equipment 12 21 Construction in progress 44 28 Total Fixed assets, gross 233 546 Less: Accumulated depreciation 14 212 Fixed assets, net $ 219 $ 334
Summary of Components of Other Current Liabilities	The components of Other current liabilities are as follows (in millions): Successor Predecessor September 30, December 31, 2021 2020 Deferred revenue $ 123 $ 148 Operating lease liabilities 53 41 Finance lease liabilities 28 28 Other 85 107 Total $ 289 $ 324
Summary of Components of Other Liabilities	The components of Other liabilities are as follows (in millions): Successor Predecessor September 30, December 31, 2021 2020 Deferred revenue $ 54 $ 60 Operating lease liabilities 132 155 Finance lease liabilities 40 59 Unrecognized tax positions 49 48 Other 83 125 Total $ 358 $ 447

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets, Net (Tables)	9 Months Ended
	Sep. 30, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Summary of Changes in Net Carrying Amount of Goodwill	The changes in the net carrying amount of goodwill are as follows (in millions): Predecessor Employer Professional Solutions Services Total Balance as of December 31, 2020 $ 1,985 $ 260 $ 2,245 Measurement period adjustments 2 — 2 Foreign currency translation 2 1 3 Balance as of June 30, 2021 $ 1,989 $ 261 $ 2,250
Schedule of Intangible Assets by Asset Class	Intangible assets by asset class are as follows (in millions): Successor Predecessor September 30, 2021 December 31, 2020 Gross Net Gross Carrying Accumulated Carrying Carrying Accumulated Net Carrying Amount Amortization Amount Amount Amortization Amount Intangible assets: Customer related and contract based intangibles $ 3,456 $ 58 $ 3,398 $ 2,078 $ 486 $ 1,592 Technology related intangibles 222 9 213 316 180 136 Trade name (finite life) 400 7 393 8 6 2 Trade name (indefinite life) — — — 3 — 3 Total $ 4,078 $ 74 $ 4,004 $ 2,405 $ 672 $ 1,733
Schedule of Intangible Assets Expected Annual Amortization Expense	Subsequent to September 30, 2021, the annual amortization expense is expected to be as follows (in millions): Customer Related Technology Trade and Contract Based Related Name Intangibles Intangibles Intangible Remainder of 2021 (October - December) $ 58 $ 10 $ 6 2022 230 37 27 2023 230 37 27 2024 230 37 27 2025 230 37 27 Thereafter 2,420 55 279 Total amortization expense $ 3,398 $ 213 $ 393

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Schedule of Debt Outstanding	Debt outstanding consisted of the following (in millions): Predecessor December 31, Maturity Date 2020 Term Loan May 1, 2024 $ 634 Term Loan, Amended October 31, 2026 1,976 Secured Senior Notes June 1, 2025 300 Unsecured Senior Notes June 1, 2025 1,230 $24m Revolving Credit Facility May 1, 2022 — $226m Revolving Credit Facility, Amended October 31, 2024 — Other December 31, 2021 10 Total gross debt 4,150 Less: term loan and senior note financing fees and premium, net (72 ) Total debt, net 4,078 Less: current portion of long term debt, net (37 ) Total long term debt, net $ 4,041 Successor September 30, Maturity Date 2021 Term Loan May 1, 2024 $ 73 Term Loan, Amended October 31, 2026 1,963 Term Loan, Third Incremental (1) August 31, 2028 519 Secured Senior Notes June 1, 2025 315 $294m Revolving Credit Facility, Amended August 31, 2026 — Other December 31, 2021 12 Total debt, net 2,882 Less: current portion of long term debt, net (43 ) Total long term debt, net $ 2,839 (1)
Schedule of Aggregate Contractual Principal Payments	Aggregate contractual principal payments as of September 30, 2021 are as follows (in millions): Remainder of 2021 (October - December) $ 19 2022 32 2023 32 2024 84 2025 325 Thereafter 2,378 Total payments $ 2,870

Stockholders' and Members' Eq_2

Stockholders' and Members' Equity (Tables)	9 Months Ended
	Sep. 30, 2021
Equity [Abstract]
Schedule of Changes in Outstanding Stock	The following table reflects the changes in our outstanding stock: Successor Class A Class B-1 Class B-2 Class V Class Z Balance at July 1, 2021 438,968,920 4,990,453 4,990,453 77,459,687 5,595,577 Issuance for compensation to non-employees (1) 12,730 — — — — Balance at September 30, 2021 438,981,650 4,990,453 4,990,453 77,459,687 5,595,577 ( 1 )
Schedule of Changes in Accumulated Other Comprehensive Income (Loss) by Component	Changes in accumulated other comprehensive loss, net of non-controlling interests and tax, are as follows (in millions): Predecessor Foreign Currency Interest Translation Rate Adjustments Swaps (1) Total Balance at December 31, 2020 $ 5 $ (47 ) $ (42 ) Other comprehensive income before reclassifications, net of tax 4 10 14 Amounts reclassified from accumulated other comprehensive loss, net of tax — 7 7 Net current period other comprehensive income, net of tax 4 17 21 Balance at March 31, 2021 $ 9 $ (30 ) $ (21 ) Other comprehensive income (loss) before reclassifications, net of tax 4 (1 ) 3 Amounts reclassified from accumulated other comprehensive loss, net of tax — 7 7 Net current period other comprehensive income, net of tax 4 6 10 Balance at June 30, 2021 $ 13 $ (24 ) $ (11 ) Successor Foreign Currency Interest Translation Rate Adjustments Swaps (1) Total Balance at July 1, 2021 $ — $ — $ — Other comprehensive loss before reclassifications, net of tax 2 1 3 Amounts reclassified from accumulated other comprehensive loss, net of tax — — — Net current period other comprehensive loss, net of tax 2 1 3 Balance at September 30, 2021 $ 2 $ 1 $ 3 (1)

Share-Based Compensation Expe_2

Share-Based Compensation Expense (Tables)	9 Months Ended
	Sep. 30, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Summary of Unit Activity	The following tables summarizes the unit activity related to the RSUs and PRSUs during the Predecessor six months ended June 30, 2021: Weighted Weighted Average Average Grant Date Grant Date Fair Value Fair Value Predecessor RSUs Per Unit PRSUs Per Unit Balance as of December 31, 2020 2,999 $ 4,563 9,223 $ 4,015 Granted 254 28,875 389 24,420 Vested (517 ) 5,459 - - Forfeited (121 ) 4,527 (567 ) 2,626 Balance as of June 30, 2021 2,614 $ 6,741 9,045 $ 4,888 The following tables summarizes the unit activity related to the RSUs and PRSUs during the Successor three months ended September 30, 2021 Weighted Weighted Average Average Grant Date Grant Date Fair Value Fair Value Successor RSUs (1) Per Unit PRSUs (1) Per Unit Balance as of July 1, 2021 854,764 $ 9.91 7,816,743 $ 9.99 Granted 9,178,145 12.64 9,045,415 12.64 Vested (12,730 ) 11.48 — — Balance as of September 30, 2021 10,020,179 $ 12.41 16,862,158 $ 11.41

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 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 Three Months Ended September 30, 2021 Basic and diluted net loss per share: Numerator Net loss attributable to Alight, Inc. - basic and diluted $ (107 ) Denominator Weighted average shares outstanding - basic and diluted 438,968,920 Basic and diluted net loss per share $ (0.24 )

Segment Reporting (Tables)

Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Schedule of Current Reportable Segments	Information regarding the Company’s current reportable segments is as follows (in millions): Revenue Successor Predecessor Three Months Ended Six Months Ended Three Months Ended Nine Months Ended September 30, June 30, September 30, September 30, 2021 2021 2020 2020 Employer Solutions Recurring $ 522 $ 1,049 $ 498 $ 1,516 Project 65 107 61 162 Total Employer Solutions 587 1,156 559 1,678 Professional Services Recurring 32 60 28 78 Project 61 124 65 194 Total Professional Services 93 184 93 272 Hosted Business 10 21 16 58 Total $ 690 $ 1,361 $ 668 $ 2,008 Segment Profit Successor Predecessor Three Months Ended Six Months Ended Three Months Ended Nine Months Ended September 30, June 30, September 30, September 30, 2021 2021 2020 2020 Employer Solutions $ 151 $ 274 $ 120 $ 389 Professional Services 4 7 12 23 Hosted Business (2 ) (3 ) — 4 Total of all reportable segments 153 278 132 416 Share-based compensation 15 5 1 5 Transaction and integration 3 — — — Non-recurring professional expenses (1) 17 18 — — Transformation initiatives (2) — — — 11 Restructuring 3 9 10 57 Other (3) 2 (5 ) 4 28 Depreciation 14 49 24 66 Intangible amortization 74 100 51 151 Operating Income 25 102 42 98 Loss from change in fair value of financial instruments 90 — — — Loss from change in fair value of tax receivable agreement 27 — — — Interest expense 28 123 61 172 Other expense (income), net — 9 3 (1 ) Loss Before Income Tax (Benefit) Expense $ (120 ) $ (30 ) $ (22 ) $ (73 ) (1) Non-recurring professional expenses primarily includes external advisor costs related to the Company’s Business Combination completed in the third quarter of 2021. (2) Transformation initiatives in fiscal year 2020 includes expenses related to enhancing our data center. (3) Other primarily includes long-term incentive expenses and expenses related to acquisitions in fiscal year 2020, offset by Other expense (income), net.

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2021
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Schedule of Swap Agreements That Will Fix the Floating Interest Rates Associated With Its Term Loan	The Company has utilized swap agreements that will fix the floating interest rates associated with its Term Loan as shown in the following table: Designation Date Effective Date Initial Notional Amount Notional Amount Outstanding as of September 30, 2021 Fixed Rate Expiration Date July 2021 August 2020 557,500,000 557,500,000 2.5070 % May 2022 July 2021 August 2020 89,863,420 98,078,920 3.0854 % February 2023 July 2021 August 2020 181,205,050 168,155,300 0.7775 % May 2024 July 2021 August 2020 388,877,200 373,963,200 0.7430 % May 2024 July 2021 May 2022 220,130,318 n/a 0.5170 % May 2024 July 2021 May 2022 306,004,562 n/a 0.5127 % May 2024
Schedule of Fair Values and Location of Outstanding Derivative Instruments Recorded in the Condensed Consolidated Balance Sheets	The fair values and location of outstanding derivative instruments recorded in the Condensed Consolidated Balance Sheets are as follows (in millions): Successor Predecessor September 30, December 31, 2021 2020 Assets Other assets $ 5 $ — Total $ 5 $ — Liabilities Other current liabilities $ 12 $ 28 Other liabilities 1 19 Total $ 13 $ 47

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis	The Company’s financial assets and liabilities measured at fair value on a recurring basis are as follows (in millions): Successor September 30, 2021 Level 1 Level 2 Level 3 Total Assets Interest rate swaps $ — $ 5 $ — $ 5 Total assets recorded at fair value $ — $ 5 $ — $ 5 Liabilities Interest rate swaps $ — $ 13 $ — $ 13 Contingent consideration liability — — 29 29 Seller Earnouts liability — — 144 144 Warrant liability 182 — — 182 Tax receivable agreement liability — — 605 605 Total liabilities recorded at fair value $ 182 $ 13 $ 778 $ 973 Predecessor December 31, 2020 Level 1 Level 2 Level 3 Total Liabilities Interest rate swaps $ — $ 47 $ — $ 47 Foreign currency hedges — — — — Contingent consideration liability — — 26 26 Total liabilities recorded at fair value $ — $ 47 $ 26 $ 73
Summary of Changes in Deferred Contingent Consideration Liabilities	The following table summarizes the changes in deferred contingent consideration liabilities (in millions): Successor Predecessor Three Months Ended Six Months Ended Three Months Ended Nine Months Ended September 30, June 30, September 30, September 30, 2021 2021 2020 2020 Beginning balance $ 29 $ 26 $ 22 $ 22 Acquisitions — 2 3 3 Accretion of contingent consideration — 1 — — Ending Balance $ 29 $ 29 $ 25 $ 25
Reconciliation of TRA Liability and Seller Earnout Liability	The following table provides a reconciliation of the TRA liability and Seller Earnout liability for the Successor three months ended September 30, 2021 Successor TRA Seller Earnouts Liability Liability Balance at July 1, 2021 $ 578 $ 109 Loss from change in fair value of TRA 27 — Loss from change in fair value of Seller Earnouts — 35 Balance at September 30, 2021 $ 605 $ 144
Schedule of Financial Liabilities Not Measured at Fair Value on Recurring Basis	The Company’s financial liabilities not measured at fair value on a recurring basis are as follows (in millions): Successor Predecessor September 30, 2021 December 31, 2020 Carrying Value Fair Value Carrying Value Fair Value Liabilities Current portion of long term debt, net $ 43 $ 43 $ 37 $ 37 Long term debt, net 2,839 2,848 4,041 4,090 Total $ 2,882 $ 2,891 $ 4,078 $ 4,127

Restructuring and Integration (

Restructuring and Integration (Tables)	9 Months Ended
	Sep. 30, 2021
Restructuring And Related Activities [Abstract]
Summary of Restructuring Costs	The following table summarizes restructuring costs by type that have been incurred through September 30, 2021 and are estimated to be incurred through the end of the Plan. Estimated costs by type may be revised in future periods as these assumptions are updated: Successor Predecessor Three Months Ended Six Months Ended Estimated Estimated September 30, June 30, Inception to Remaining Total 2021 2021 Date Costs Cost (1) Employer Solutions Severance and Related Benefits $ 1 $ 6 $ 46 $ 21 $ 67 Other Restructuring Costs (2) 2 2 44 4 48 Total Employer Solutions $ 3 $ 8 $ 90 $ 25 $ 115 Professional Services Severance and Related Benefits $ — $ 1 $ 8 $ 5 $ 13 Other Restructuring Costs (2) — — 5 2 7 Total Professional Services $ — $ 1 $ 13 $ 7 $ 20 Total Restructuring Costs $ 3 $ 9 $ 103 $ 32 $ 135 (1) Actual costs, when incurred, may vary due to changes in the assumptions built into the Plan. Significant assumptions that may change when plans are finalized and implemented include, but are not limited to, changes in severance calculations, changes in the assumptions underlying sublease loss calculations due to changing market conditions, and changes in the overall analysis that might cause the Company to add or cancel component initiatives. (2) Other costs associated with the Plan primarily include consulting and legal fees and lease consolidation.
Schedule of Accrued Restructuring Liability	As of September 30, 2021, approximately $4 million of the restructuring liability is unpaid and is recorded in Accounts payable and accrued liabilities on the Condensed Consolidated Balance Sheets. Predecessor Severance and Related Benefits Other Restructuring Costs Total Accrued restructuring liability as of December 31, 2020 $ 12 $ 3 $ 15 Restructuring charges 7 2 9 Cash payments (13 ) (5 ) (18 ) Accrued restructuring liability as of June 30, 2021 $ 6 $ — $ 6 Successor Severance and Related Benefits Other Restructuring Costs Total Accrued restructuring liability as of July 1, 2021 $ 6 $ — $ 6 Restructuring charges 1 2 3 Cash payments (3 ) (2 ) (5 ) Accrued restructuring liability as of September 30, 2021 $ 4 $ — $ 4

Basis of Presentation and Nat_2

Basis of Presentation and Nature of Business - Additional Information (Details)	Jul. 02, 2021	Sep. 30, 2021
Basis Of Presentation And Nature Of Business [Line Items]
Date of incorporation		Mar. 26, 2020
Foley Trasimene Acquisition Corp
Basis Of Presentation And Nature Of Business [Line Items]
Business combination, closing date of acquisition	Jul. 2, 2021
Foley Trasimene Acquisition Corp | Alight Holdings
Basis Of Presentation And Nature Of Business [Line Items]
Non-voting ownership percentage held by noncontrolling interest	15.00%
Alight | Foley Trasimene Acquisition Corp | Alight Holdings
Basis Of Presentation And Nature Of Business [Line Items]
Percentage of economic interest	85.00%
Business combination, percentage of voting power	100.00%

Accounting Policies and Pract_4

Accounting Policies and Practices - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Jul. 01, 2021	Dec. 31, 2020
Accounting Policies And Practices [Line Items]
Cash and cash equivalents	$ 769			$ 769			$ 506
Allowance for expected credit losses	4			$ 4		$ 0	$ 15
Foreign exchange gains (losses)	$ 1	$ (3)	$ (9)		$ 2
Business combination tax receivable agreement percentage of benefit deemed to realize				85.00%
Minimum percentage of unrecognized tax benefit likely to be realized				50.00%
ASU 2020-04
Accounting Policies And Practices [Line Items]
Change in accounting principle, accounting standards update, adopted [true false]	true			true
Change in accounting principle, accounting standards update, adoption date	Mar. 12, 2020			Mar. 12, 2020
Change in accounting principle, accounting standards update, immaterial effect [true false]	true			true
ASU 2020-08
Accounting Policies And Practices [Line Items]
Change in accounting principle, accounting standards update, adopted [true false]	true			true
Change in accounting principle, accounting standards update, adoption date	Jan. 1, 2021			Jan. 1, 2021
Change in accounting principle, accounting standards update, immaterial effect [true false]	true			true

Accounting Policies and Pract_5

Accounting Policies and Practices - Summary of Estimated Useful Lives of Assets (Details)	9 Months Ended
	Sep. 30, 2021
Capitalized Software
Property Plant And Equipment [Line Items]
Estimated useful life	Lesser of the life of an associated license, or 4 to 7 years
Capitalized Software | Minimum
Property Plant And Equipment [Line Items]
Estimated useful life	4 years
Capitalized Software | Maximum
Property Plant And Equipment [Line Items]
Estimated useful life	7 years
Leasehold Improvements
Property Plant And Equipment [Line Items]
Estimated useful life	Lesser of estimated useful life or lease term, not to exceed 10 years
Leasehold Improvements | Maximum
Property Plant And Equipment [Line Items]
Estimated useful life	10 years
Furniture, Fixtures and Equipment | Minimum
Property Plant And Equipment [Line Items]
Estimated useful life	4 years
Furniture, Fixtures and Equipment | Maximum
Property Plant And Equipment [Line Items]
Estimated useful life	10 years
Computer Equipment | Minimum
Property Plant And Equipment [Line Items]
Estimated useful life	4 years
Computer Equipment | Maximum
Property Plant And Equipment [Line Items]
Estimated useful life	6 years

Revenue from Contracts with C_2

Revenue from Contracts with Customers - Additional Information (Details)	9 Months Ended
	Sep. 30, 2021
Disaggregation Of Revenue [Line Items]
Revenue related to unsatisfied performance obligations, description	The Company has elected to apply practical expedients to not disclose the revenue related to unsatisfied performance obligations if (1) the contract has an original duration of one year or less, or (2) the variable consideration is allocated entirely to an unsatisfied performance obligation which is recognized as a series of distinct goods and services that form a single performance obligation.
Customer Relationships
Disaggregation Of Revenue [Line Items]
Practical expedient description	For situations where the duration of the contract is 1 year or less, the Company has applied a practical expedient and recognized the costs of obtaining a contract as an expense when incurred. These costs are recorded in Cost of services, exclusive of depreciation and amortization in the Condensed Consolidated Statements of Comprehensive Income (Loss)
Payroll and Cloud Solutions | Customer Relationships
Disaggregation Of Revenue [Line Items]
Capitalized costs, amortization period	7 years
Other Solutions | Customer Relationships
Disaggregation Of Revenue [Line Items]
Capitalized costs, amortization period	15 years
Minimum
Disaggregation Of Revenue [Line Items]
Revenue recognition contract terms	3 years
Minimum | Customer Relationships
Disaggregation Of Revenue [Line Items]
Expected life of the underlying customer relationships	3 years
Maximum
Disaggregation Of Revenue [Line Items]
Revenue recognition contract terms	5 years
Maximum | Customer Relationships
Disaggregation Of Revenue [Line Items]
Expected life of the underlying customer relationships	5 years

Acquisitions - Additional Infor

Acquisitions - Additional Information (Details) $ in Millions	Jul. 02, 2021USD ($)	Sep. 30, 2020USD ($)	Dec. 31, 2020USD ($)Acquisition	Sep. 30, 2021USD ($)	Jun. 30, 2021USD ($)
Business Acquisition [Line Items]
Goodwill			$ 2,245	$ 3,356	$ 2,250
Number of business acquisition completed | Acquisition			1
Foley Trasimene Acquisition Corp
Business Acquisition [Line Items]
Consideration transferred	$ 4,970
Business combination, deferred underwriting costs related to initial public offering	36
Business combination, fees related to PIPE Investment	37
Business combination, acquisition-related costs	21
Business combination, seller transaction costs	39
Business combination, advisory and investment banker fees	36
Business combination, certain executive compensation related expenses	36
Goodwill	$ 3,356
Business acquisition, pro forma nonrecurring, direct transaction costs		$ 11

Acquisitions - Summary of Preli

Acquisitions - Summary of Preliminary Consideration Transferred (Details) - Foley Trasimene Acquisition Corp $ in Millions	Jul. 02, 2021USD ($)
Business Acquisition [Line Items]
Cash consideration to prior equityholders	$ 1,055
Repayment of debt	1,814
Total cash consideration	2,869
Continuing unitholders rollover equity into the Company	1,414
Consideration transferred	4,970
Noncontrolling interest	838
Tax Receivable Agreement
Business Acquisition [Line Items]
Contingent consideration	578
Seller Earnouts
Business Acquisition [Line Items]
Contingent consideration	$ 109

Acquisitions - Summary of Pre_2

Acquisitions - Summary of Preliminary Consideration Transferred (Parenthetical) (Details) - Foley Trasimene Acquisition Corp $ / shares in Units, shares in Millions, $ in Billions	Jul. 02, 2021USD ($)$ / sharesshares
Business Acquisition [Line Items]
Business acquisition, equity interest issued, number of shares | shares	141
Business acquisition, equity interest issued, total fair value | $	$ 1.4
Business acquisition, equity interest issued, share price per share | $ / shares	$ 10

Acquisitions - Summary of Pre_3

Acquisitions - Summary of Preliminary Purchase Price allocation (Details) - USD ($) $ in Millions	Sep. 30, 2021	Jul. 02, 2021	Jun. 30, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Goodwill	$ 3,356		$ 2,250	$ 2,245
Foley Trasimene Acquisition Corp
Business Acquisition [Line Items]
Cash and cash equivalents		$ 460
Receivables		486
Fiduciary assets		1,015
Other current assets		159
Fixed assets		206
Deferred tax assets, net		4
Other assets		440
Accounts payable and accrued liabilities		(327)
Fiduciary liabilities		(1,015)
Other current liabilities		(302)
Debt assumed		(2,370)
Other liabilities		(381)
Intangible assets		4,078
Total identifiable net assets		2,453
Goodwill		$ 3,356

Acquisitions - Summary of Pre_4

Acquisitions - Summary of Preliminary Values Allocated to Identifiable Intangible Assets and Estimated Useful Lives (Details) - Foley Trasimene Acquisition Corp $ in Millions	Jul. 02, 2021USD ($)
Definite Lived Trade Names
Acquired Finite Lived Intangible Assets [Line Items]
Identifiable intangible assets, Fair value	$ 400
Identifiable intangible assets, Useful life	15 years
Technology Related Intangibles
Acquired Finite Lived Intangible Assets [Line Items]
Identifiable intangible assets, Fair value	$ 222
Identifiable intangible assets, Useful life	6 years
Customer Related and Contract Based Intangibles
Acquired Finite Lived Intangible Assets [Line Items]
Identifiable intangible assets, Fair value	$ 3,456
Identifiable intangible assets, Useful life	15 years

Acquisitions - Summary of Unaud

Acquisitions - Summary of Unaudited Pro forma Financial Information (Details) - Foley Trasimene Acquisition Corp - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Business Acquisition [Line Items]
Pro forma revenue	$ 690	$ 668	$ 2,051	$ 2,008
Pro forma net loss	(111)	(70)	(121)	(136)
Pro forma net loss attributable to controlling interest	(99)	(56)	(107)	(111)
Pro forma net loss attributable to noncontrolling interest	$ (12)	$ (14)	$ (14)	$ (25)

Other Financial Data - Summary

Other Financial Data - Summary of Components of Receivables, Net (Details) - USD ($) $ in Millions	Sep. 30, 2021	Jul. 01, 2021	Dec. 31, 2020
Other Financial Data [Abstract]
Billed and unbilled receivables	$ 509		$ 547
Allowance for expected credit losses	(4)	$ 0	(15)
Balance at end of period	$ 505		$ 532

Other Financial Data - Addition

Other Financial Data - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Sep. 30, 2020	Jul. 01, 2021	Dec. 31, 2020
Other Financial Data [Line Items]
Allowance for expected credit losses	$ 4				$ 0	$ 15
Business combination, fixed assets acquired, accumulated depreciation	0
Fixed assets, net	219					334
Contract with customer, liability, revenue recognized	22		$ 101	$ 152
Finance Leased Assets Included in Computer Equipment
Other Financial Data [Line Items]
Fixed assets, net	67					83
Interest Rate Swaps
Other Financial Data [Line Items]
Derivative asset, noncurrent	5
Derivative liability, current	12					28
Derivative liability, noncurrent	1					$ 19
Cost of Services, Exclusive of Depreciation and Amortization
Other Financial Data [Line Items]
Amortization expense	$ 17	$ 15	$ 33	$ 47

Other Financial Data - Summar_2

Other Financial Data - Summary of Components of Other Current Assets (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Other Financial Data [Abstract]
Deferred project costs	$ 39	$ 53
Prepaid expenses	65	57
Commissions receivable	35	32
Other	33	21
Total	$ 172	$ 163

Other Financial Data - Summar_3

Other Financial Data - Summary of Components of Other Assets (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Other Financial Data [Abstract]
Deferred project costs	$ 252	$ 228
Operating lease right of use asset	144	129
Commissions receivable	33	25
Other	27	26
Total	$ 456	$ 408

Other Financial Data - Summar_4

Other Financial Data - Summary of Components of Fixed Assets, Net (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Property Plant And Equipment [Line Items]
Total Fixed assets, gross	$ 233	$ 546
Less: Accumulated depreciation	14	212
Fixed assets, net	219	334
Capitalized Software
Property Plant And Equipment [Line Items]
Total Fixed assets, gross	40	242
Leasehold Improvements
Property Plant And Equipment [Line Items]
Total Fixed assets, gross	39	63
Computer Equipment
Property Plant And Equipment [Line Items]
Total Fixed assets, gross	98	192
Furniture, Fixtures and Equipment
Property Plant And Equipment [Line Items]
Total Fixed assets, gross	12	21
Construction in Progress
Property Plant And Equipment [Line Items]
Total Fixed assets, gross	$ 44	$ 28

Other Financial Data - Summar_5

Other Financial Data - Summary of Components of Other Current Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Other Financial Data [Abstract]
Deferred revenue	$ 123	$ 148
Operating lease liabilities	53	41
Finance lease liabilities	28	28
Other	85	107
Total	$ 289	$ 324

Other Financial Data - Summar_6

Other Financial Data - Summary of Components of Other Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Other Financial Data [Abstract]
Deferred revenue	$ 54	$ 60
Operating lease liabilities	132	155
Finance lease liabilities	40	59
Unrecognized tax positions	49	48
Other	83	125
Total	$ 358	$ 447

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets, Net - Summary of Changes in Net Carrying Amount of Goodwill (Details) $ in Millions	6 Months Ended
	Jun. 30, 2021USD ($)
Goodwill [Line Items]
Balance as of December 31, 2020	$ 2,245
Measurement period adjustments	2
Foreign currency translation	3
Balance as of June 30, 2021	2,250
Employer Solutions
Goodwill [Line Items]
Balance as of December 31, 2020	1,985
Measurement period adjustments	2
Foreign currency translation	2
Balance as of June 30, 2021	1,989
Professional Services
Goodwill [Line Items]
Balance as of December 31, 2020	260
Foreign currency translation	1
Balance as of June 30, 2021	$ 261

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets, Net - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Jul. 01, 2021	Dec. 31, 2020
Finite Lived Intangible Assets [Line Items]
Goodwill	$ 3,356,000,000		$ 2,250,000,000	$ 3,356,000,000			$ 2,245,000,000
Non-taxable portion of goodwill acquired during period				1,500,000,000
Impairment of goodwill	0		0	0
Amortization of intangible assets	74,000,000	$ 51,000,000	100,000,000		$ 151,000,000
Accumulated amortization	74,000,000			74,000,000		$ 0	$ 672,000,000
Employer Solutions
Finite Lived Intangible Assets [Line Items]
Goodwill			$ 3,400,000,000
Professional Services
Finite Lived Intangible Assets [Line Items]
Goodwill	$ 36,000,000			$ 36,000,000

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets, Net - Schedule of Intangible Assets by Asset Class (Details) - USD ($)	Sep. 30, 2021	Jul. 01, 2021	Dec. 31, 2020
Intangible Assets
Intangible assets, Gross Carrying Amount	$ 4,078,000,000		$ 2,405,000,000
Intangible assets, Accumulated Amortization	74,000,000	$ 0	672,000,000
Intangible assets, Net Carrying Amount	4,004,000,000		1,733,000,000
Customer Related and Contract Based Intangibles
Intangible Assets
Intangible assets, Gross Carrying Amount	3,456,000,000		2,078,000,000
Intangible assets, Accumulated Amortization	58,000,000		486,000,000
Intangible assets, Net Carrying Amount	3,398,000,000		1,592,000,000
Technology Related Intangibles
Intangible Assets
Intangible assets, Gross Carrying Amount	222,000,000		316,000,000
Intangible assets, Accumulated Amortization	9,000,000		180,000,000
Intangible assets, Net Carrying Amount	213,000,000		136,000,000
Trade Name
Intangible Assets
Intangible assets, Gross Carrying Amount	400,000,000		8,000,000
Intangible assets, Accumulated Amortization	7,000,000		6,000,000
Intangible assets, Net Carrying Amount	$ 393,000,000		2,000,000
Trade Name
Intangible Assets
Intangible assets, Carrying Amount			$ 3,000,000

Goodwill and Intangible Asset_6

Goodwill and Intangible Assets, Net - Schedule of Intangible Assets Expected Annual Amortization Expense (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Customer Related and Contract Based Intangibles
Finite Lived Intangible Assets [Line Items]
Remainder of 2021 (October - December)	$ 58
2022	230
2023	230
2024	230
2025	230
Thereafter	2,420
Intangible assets, Net Carrying Amount	3,398	$ 1,592
Technology Related Intangibles
Finite Lived Intangible Assets [Line Items]
Remainder of 2021 (October - December)	10
2022	37
2023	37
2024	37
2025	37
Thereafter	55
Intangible assets, Net Carrying Amount	213	136
Trade Name
Finite Lived Intangible Assets [Line Items]
Remainder of 2021 (October - December)	6
2022	27
2023	27
2024	27
2025	27
Thereafter	279
Intangible assets, Net Carrying Amount	$ 393	$ 2

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details)	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Effective tax rate	0.00%	74.00%	17.00%	16.00%
U.S. statutory corporate income tax rate	21.00%

Debt - Schedule of Debt Outstan

Debt - Schedule of Debt Outstanding (Details) - USD ($) $ in Millions	1 Months Ended				3 Months Ended	9 Months Ended	12 Months Ended
	Aug. 31, 2021	Aug. 31, 2020	May 31, 2020	May 31, 2017	Sep. 30, 2021	Sep. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Gross debt					$ 2,870	$ 2,870	$ 4,150
Less: term loan and senior note financing fees and premium, net							(72)
Total debt, net					2,882	2,882	4,078
Less: current portion of long term debt, net					(43)	(43)	(37)
Long term debt					2,839	2,839	4,041
Term Loan
Debt Instrument [Line Items]
Gross debt					$ 73	73	$ 634
Maturity Date					May 1, 2024		May 1, 2024
Term Loan, Amended
Debt Instrument [Line Items]
Gross debt					$ 1,963	1,963	$ 1,976
Total debt, net		$ 1,986
Maturity Date		Oct. 31, 2026			Oct. 31, 2026		Oct. 31, 2026
Term Loan, Third Incremental
Debt Instrument [Line Items]
Gross debt					$ 519	519
Total debt, net	$ 525
Maturity Date	Aug. 31, 2028				Aug. 31, 2028
Secured Senior Notes
Debt Instrument [Line Items]
Gross debt					$ 315	315	$ 300
Maturity Date			Jun. 1, 2025		Jun. 1, 2025		Jun. 1, 2025
Unsecured Senior Notes
Debt Instrument [Line Items]
Gross debt							$ 1,230
Maturity Date				Jun. 1, 2025			Jun. 1, 2025
$24m Revolving Credit Facility
Debt Instrument [Line Items]
Maturity Date							May 1, 2022
$226m Revolving Credit Facility, Amended
Debt Instrument [Line Items]
Maturity Date							Oct. 31, 2024
$294m Revolving Credit Facility, Amended
Debt Instrument [Line Items]
Maturity Date	Aug. 31, 2026	Oct. 31, 2024			Aug. 31, 2026
Other
Debt Instrument [Line Items]
Line of credit					$ 12	$ 12	$ 10
Maturity Date					Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2021

Debt - Schedule of Debt Outst_2

Debt - Schedule of Debt Outstanding (Parenthetical) (Details) - USD ($)	Sep. 30, 2021	Aug. 31, 2021	Dec. 31, 2020	Aug. 31, 2020
Term Loan, Third Incremental
Debt Instrument [Line Items]
Unamortized debt issuance costs	$ 6,000,000
$24m Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity			$ 24,000,000
$226m Revolving Credit Facility, Amended
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity			$ 226,000,000
$294m Revolving Credit Facility, Amended
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity	$ 294,000,000	$ 294,000,000		$ 226,000,000

Debt - Additional Information (

Debt - Additional Information (Details) - USD ($)

1 Months Ended

3 Months Ended

6 Months Ended

9 Months Ended

12 Months Ended

Aug. 31, 2021

Jul. 31, 2021

Aug. 31, 2020

May 31, 2020

May 31, 2017

Sep. 30, 2021

Jun. 30, 2021

Sep. 30, 2020

Jun. 30, 2021

Jun. 30, 2020

Sep. 30, 2021

Sep. 30, 2020

Dec. 31, 2020

Dec. 31, 2019

Jul. 31, 2019

Nov. 30, 2017

Debt Instrument [Line Items]

Aggregate increase in debt liability

$ 60,000,000

Debt balance

$ 2,882,000,000

2,882,000,000

$ 4,078,000,000

Amortization of financing fees and benefits

(1,000,000)

Interest expense related to debt instruments

25,000,000

$ 51,000,000

$ 105,000,000

$ 151,000,000

Interest Expense

Debt Instrument [Line Items]

Amortization of financing fees and benefits

(1,000,000)

4,000,000

8,000,000

$ 8,000,000

13,000,000

Revolving Credit Facility

Debt Instrument [Line Items]

Debt term

5 years

Maturity Date

May 1, 2022

Line of credit, maximum borrowing capacity

$ 250,000,000

Line of credit

0

0

Capitalized financing fees

$ 1,000,000

Revolving Credit Facility | Other Assets

Debt Instrument [Line Items]

Unamortized financing fees

1,000,000

1,000,000

Unamortized financing fees

$ 1,000,000

1,000,000

1,000,000

Revolving Credit Facility | Other Current Assets

Debt Instrument [Line Items]

Unamortized financing fees

$ 1,000,000

Amended Revolving Credit Facility

Debt Instrument [Line Items]

Maturity Date

Aug. 31, 2026

Oct. 31, 2024

Aug. 31, 2026

Line of credit, maximum borrowing capacity

$ 294,000,000

$ 226,000,000

$ 294,000,000

294,000,000

Unused letters of credit

$ 4,000,000

4,000,000

Proceeds from Lines of Credit

$ 0

Other

Debt Instrument [Line Items]

Maturity Date

Dec. 31, 2021

Dec. 31, 2021

Dec. 31, 2021

Revolving credit facility acquired

$ 21,000,000

Line of credit

$ 12,000,000

$ 12,000,000

$ 10,000,000

LIBOR | Other

Debt Instrument [Line Items]

Debt instrument, variable interest rate

3.50%

Term Loan

Debt Instrument [Line Items]

Debt term

7 years

Repayments of principal to refinance debt

$ 270,000,000

Maturity Date

May 1, 2024

May 1, 2024

Repayment of principal

$ 556,000,000

Term Loan | LIBOR | Minimum

Debt Instrument [Line Items]

Debt instrument, variable interest rate

2.75%

Term Loan | LIBOR | Maximum

Debt Instrument [Line Items]

Debt instrument, variable interest rate

3.00%

Term Loan, Amended

Debt Instrument [Line Items]

Debt balance

$ 1,986,000,000

Maturity Date

Oct. 31, 2026

Oct. 31, 2026

Oct. 31, 2026

Debt instrument, variable interest rate basis

1‑month

Payment terms

The Company is required to make principal payments at the end of each fiscal quarter based on defined terms in the agreement with the remaining principal balances due on the maturity dates.

Principal payment

$ 563,000,000

$ 277,000,000

$ 13,000,000

$ 291,000,000

Swap agreement expiration period

2024-05

Term Loan, Amended | Minimum

Debt Instrument [Line Items]

Debt instrument, variable interest rate

0.50%

Term Loan, Amended | LIBOR | Minimum

Debt Instrument [Line Items]

Debt instrument, variable interest rate

3.25%

Term Loan, Amended | LIBOR | Maximum

Debt Instrument [Line Items]

Debt instrument, variable interest rate

3.50%

Term Loan, Third Incremental

Debt Instrument [Line Items]

Debt balance

$ 525,000,000

Maturity Date

Aug. 31, 2028

Aug. 31, 2028

First mandatory principal payment due

Dec. 31, 2021

Term Loan, Third Incremental | LIBOR

Debt Instrument [Line Items]

Debt instrument, variable interest rate

0.50%

3.00%

Amended Term Loan, Third Incremental | LIBOR

Debt Instrument [Line Items]

Debt instrument, variable interest rate

0.50%

Secured Senior Notes

Debt Instrument [Line Items]

Maturity Date

Jun. 1, 2025

Jun. 1, 2025

Jun. 1, 2025

Payment terms

interest at a fixed rate of 5.75% per annum, payable semi-annually on June 1 and December 1 of each year

Face amount

$ 300,000,000

Interest rate

5.75%

Debt payment beginning date

Dec. 1, 2020

Unsecured Senior Notes

Debt Instrument [Line Items]

Maturity Date

Jun. 1, 2025

Jun. 1, 2025

Payment terms

interest at a fixed rate of 6.750% per annum, payable semi-annually on June 1 and December 1 of each year.

Face amount

$ 270,000,000

$ 500,000,000

$ 280,000,000

$ 180,000,000

Interest rate

6.75%

Debt - Schedule of Aggregate Co

Debt - Schedule of Aggregate Contractual Principal Payments (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Debt Disclosure [Abstract]
Remainder of 2021 (October - December)	$ 19
2022	32
2023	32
2024	84
2025	325
Thereafter	2,378
Total payments	$ 2,870	$ 4,150

Stockholders' and Members' Eq_3

Stockholders' and Members' Equity - Additional Information (Details)	6 Months Ended	9 Months Ended
	Jun. 30, 2021shares	Sep. 30, 2021Vote$ / sharesshares	Sep. 30, 2020shares	Dec. 31, 2020shares
Class Of Stock [Line Items]
Preferred stock, authorized		1,000,000
Preferred stock, par value | $ / shares		$ 0.0001
Preferred stock, issued		0
Preferred stock, outstanding		0
Class A Common Stock
Class Of Stock [Line Items]
Common stock, shares issued		446,802,741
Common stock, shares outstanding		446,802,741
Common stock, par value | $ / shares		$ 0.0001
Common stock, shares authorized		1,000,000,000
Unvested Class A common stock
Class Of Stock [Line Items]
Common stock, shares issued		7,821,091
Common stock, shares outstanding		7,821,091
Common stock, par value | $ / shares		$ 0.0001
Class B Common Stock
Class Of Stock [Line Items]
Common stock, shares issued		9,980,906
Common stock, shares outstanding		9,980,906
Common stock, par value | $ / shares		$ 0.0001
Issuance of common units		14,999,998
Common stock, shares authorized		20,000,000
Unvested Common Class B
Class Of Stock [Line Items]
Issuance of employee compensation		850,416
Class B-1 Common Stock
Class Of Stock [Line Items]
Common stock, shares issued		4,990,453
Common stock, shares outstanding		4,990,453
Common stock, par value | $ / shares		$ 0.0001
Common stock shares related to employee compensation, unvested		425,208
Common stock conversion, description		Class B-1 common shares vest and automatically convert into shares of Class A Common Stock on a 1-for-1 basis if the volume weighted average price (“VWAP”) of the Class A common shares equals or exceeds $12.50 per share for 20 or more trading days within a consecutive 30-trading day period (or in the event of a change of control or liquidation event that implies a $12.50 per share valuation on a diluted basis).
Common stock shares conversion ratio		1
Common stock shares convertible stock price trigger | $ / shares		$ 12.50
Common stock shares convertible threshold trading days		20 days
Common stock shares convertible threshold consecutive trading days		30 days
Common stock shares convertible stock valuation price on diluted basis | $ / shares		$ 12.50
Class B-1 Common Shares | Alight Holdings
Class Of Stock [Line Items]
Common stock, shares issued		2,509,546
Common stock, shares outstanding		2,509,546
Common stock conversion, description		Class B-1 common units vest and automatically convert into Class A common units of Alight Holdings on a 1-for-1 basis if the VWAP of the Class A common shares equals or exceeds $12.50 per share for 20 or more trading days within a consecutive 30-trading day period (or in the event of a change of control or liquidation event that implies a $12.50 per share valuation on a diluted basis).
Common stock shares conversion ratio		1
Common stock shares convertible stock price trigger | $ / shares		$ 12.50
Common stock shares convertible threshold trading days		20 days
Common stock shares convertible threshold consecutive trading days		30 days
Common stock shares convertible stock valuation price on diluted basis | $ / shares		$ 12.50
Class B-2 Common Stock
Class Of Stock [Line Items]
Common stock, shares issued		4,990,453
Common stock, shares outstanding		4,990,453
Common stock, par value | $ / shares		$ 0.0001
Common stock shares related to employee compensation, unvested		425,208
Common stock conversion, description		Class B-2 common shares vest and automatically convert into shares of Class A common shares on a 1-for-1 basis if the VWAP of the Class A common shares equals or exceeds $15.00 per share for 20 or more trading days within a consecutive 30-trading day period (or in the event of a change of control or liquidation event that implies a $15.00 per share valuation on a diluted basis).
Common stock shares conversion ratio		1
Common stock shares convertible stock price trigger | $ / shares		$ 15
Common stock shares convertible threshold trading days		20 days
Common stock shares convertible threshold consecutive trading days		30 days
Common stock shares convertible stock valuation price on diluted basis | $ / shares		$ 15
Class B-2 Common Units | Alight Holdings
Class Of Stock [Line Items]
Common stock, shares issued		2,509,546
Common stock, shares outstanding		2,509,546
Common stock conversion, description		Class B-2 common units vest and automatically convert into Class A common units of Alight Holdings on a 1-for-1 basis if the VWAP of the Class A common shares equals or exceeds $15.00 per share for 20 or more trading days within a consecutive 30-trading day period (or in the event of a change of control or liquidation event that implies a $15.00 per share valuation on a diluted basis).
Common stock shares conversion ratio		1
Common stock shares convertible stock price trigger | $ / shares		$ 15
Common stock shares convertible threshold trading days		20 days
Common stock shares convertible threshold consecutive trading days		30 days
Common stock shares convertible stock valuation price on diluted basis | $ / shares		$ 15
Class B-3 Common Stock
Class Of Stock [Line Items]
Common stock, shares issued		0
Common stock, shares outstanding		0
Common stock, par value | $ / shares		$ 0.0001
Common stock, shares authorized		10,000,000
Class V Common Stock
Class Of Stock [Line Items]
Common stock, shares issued		77,459,687
Common stock, shares outstanding		77,459,687
Common stock, par value | $ / shares		$ 0.0001
Common stock shares conversion ratio		1
Common stock, shares authorized		175,000,000
Common shares, votes per share | Vote		1
Shares, outstanding	77,459,687	77,459,687
Class Z Common Stock
Class Of Stock [Line Items]
Common stock, shares issued		5,595,577		8,671,507
Common stock, shares outstanding		5,595,577
Common stock, par value | $ / shares		$ 0.0001
Common stock, shares authorized		12,900,000
Shares, outstanding	5,595,577	5,595,577
Class Z-A Common Stock
Class Of Stock [Line Items]
Common stock, shares issued		5,046,819
Common stock, shares outstanding		5,046,819
Common stock, par value | $ / shares		$ 0.0001
Class Z-B-1 Common Stock
Class Of Stock [Line Items]
Common stock, shares issued		274,379
Common stock, shares outstanding		274,379
Common stock, par value | $ / shares		$ 0.0001
Class Z-B-2 Common Stock
Class Of Stock [Line Items]
Common stock, shares issued		274,379
Common stock, shares outstanding		274,379
Common stock, par value | $ / shares		$ 0.0001
Class Z Common Units
Class Of Stock [Line Items]
Common stock, shares issued		3,075,930
Common stock, shares outstanding		3,075,930
Class Z-A Common Units
Class Of Stock [Line Items]
Common stock, shares issued		2,774,272
Common stock, shares outstanding		2,774,272
Class Z-B-1 Common Units
Class Of Stock [Line Items]
Common stock, shares issued		150,829
Common stock, shares outstanding		150,829
Class Z-B-2 Common Units
Class Of Stock [Line Items]
Common stock, shares issued		150,829
Common stock, shares outstanding		150,829
Class A Units
Class Of Stock [Line Items]
Common stock, shares outstanding		524,262,428
Shares, outstanding		446,802,741
Held by non controlling interest		77,459,687
Common Class A Units
Class Of Stock [Line Items]
Common units granted	0		0
Common units/stock voting rights		Each holder of Class A common units is entitled to one vote per unit.
Common Class A-1 Units
Class Of Stock [Line Items]
Common units granted	643		0
Common units/stock voting rights		Holders of Class A-1 common units are not entitled to voting rights.
Common Class B Units
Class Of Stock [Line Items]
Common units granted	0		6,409
Common units/stock voting rights		Holders of Class B common units are not entitled to voting rights.

Stockholders' and Members' Eq_4

Stockholders' and Members' Equity - Schedule of Changes in Outstanding Stock (Details)	3 Months Ended
	Sep. 30, 2021shares
Common Class A Units
Class Of Stock [Line Items]
Balance, Shares	438,968,920
Balance, Shares	438,981,650
Common Class A Units | Board of Directors
Class Of Stock [Line Items]
Issuance for compensation to non-employees	12,730
Common Class B1
Class Of Stock [Line Items]
Balance, Shares	4,990,453
Balance, Shares	4,990,453
Common Class B2
Class Of Stock [Line Items]
Balance, Shares	4,990,453
Balance, Shares	4,990,453
Class V Common Stock
Class Of Stock [Line Items]
Balance, Shares	77,459,687
Balance, Shares	77,459,687
Class Z Common Stock
Class Of Stock [Line Items]
Balance, Shares	5,595,577
Balance, Shares	5,595,577

Stockholders' and Members' Eq_5

Stockholders' and Members' Equity - Schedule of Changes in Accumulated Other Comprehensive Income (Loss) by Component (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	$ 691	$ 683	$ 683
Balance		691	683
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	13	9	5
Other comprehensive income (loss) before reclassifications, net of tax	2	4	4
Net current period other comprehensive income, net of tax	2	4	4
Balance	2	13	9
Interest Rate Swaps
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(24)	(30)	(47)
Other comprehensive income (loss) before reclassifications, net of tax	1	(1)	10
Amounts reclassified from accumulated other comprehensive loss, net of tax		7	7
Net current period other comprehensive income, net of tax	1	6	17
Balance	1	(24)	(30)
Accumulated Other Comprehensive (Loss) Income
Accumulated Other Comprehensive Income Loss [Line Items]
Balance	(11)	(21)	(42)
Other comprehensive income (loss) before reclassifications, net of tax	3	3	14
Amounts reclassified from accumulated other comprehensive loss, net of tax		7	7
Net current period other comprehensive income, net of tax	3	10	21
Balance	$ 3	$ (11)	$ (21)

Share-Based Compensation Expe_3

Share-Based Compensation Expense - Summary of Unit Activity related to RSUs (Details) - $ / shares	3 Months Ended	6 Months Ended
	Sep. 30, 2021	Jun. 30, 2021
RSUs [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Beginning Balance	854,764
Granted	9,178,145
Vested	(12,730)
Ending Balance	10,020,179	854,764
Weighted Average Grant Date Fair Value Per Unit, Beginning Balance	$ 9.91
Weighted Average Grant Date Fair Value Per Unit, Granted	12.64
Weighted Average Grant Date Fair Value Per Unit, Vested	11.48
Weighted Average Grant Date Fair Value Per Unit, Ending Balance	$ 12.41	$ 9.91
RSUs [Member] | Predecessor Plans [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Beginning Balance	2,614	2,999
Granted		254
Vested		(517)
Forfeited		(121)
Ending Balance		2,614
Weighted Average Grant Date Fair Value Per Unit, Beginning Balance	$ 6,741	$ 4,563
Weighted Average Grant Date Fair Value Per Unit, Granted		28,875
Weighted Average Grant Date Fair Value Per Unit, Vested		5,459
Weighted Average Grant Date Fair Value Per Unit, Forfeited		4,527
Weighted Average Grant Date Fair Value Per Unit, Ending Balance		$ 6,741
Performance-based RSUs [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Beginning Balance	7,816,743
Granted	9,045,415
Ending Balance	16,862,158	7,816,743
Weighted Average Grant Date Fair Value Per Unit, Beginning Balance	$ 9.99
Weighted Average Grant Date Fair Value Per Unit, Granted	12.64
Weighted Average Grant Date Fair Value Per Unit, Ending Balance	$ 11.41	$ 9.99
Performance-based RSUs [Member] | Predecessor Plans [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Beginning Balance	9,045	9,223
Granted		389
Forfeited		(567)
Ending Balance		9,045
Weighted Average Grant Date Fair Value Per Unit, Beginning Balance	$ 4,888	$ 4,015
Weighted Average Grant Date Fair Value Per Unit, Granted		24,420
Weighted Average Grant Date Fair Value Per Unit, Forfeited		2,626
Weighted Average Grant Date Fair Value Per Unit, Ending Balance		$ 4,888

Share-Based Compensation Expe_4

Share-Based Compensation Expense - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Sep. 30, 2021	Sep. 30, 2020
Performance-based RSUs [Member]
Class Of Stock [Line Items]
Aggregate grant date fair value	$ 114
Total future compensation expense	161			$ 161
Remaining weighted-average amortization period				2 years 4 months 24 days
RSUs [Member]
Class Of Stock [Line Items]
Aggregate grant date fair value	116
Total future compensation expense	116			$ 116
Remaining weighted-average amortization period				2 years 3 months 18 days
RSUs and PRSUs[Member]
Class Of Stock [Line Items]
Share-based compensation	$ 15	$ 1	$ 5		$ 5
2021 Omnibus Incentive Plan | Time-based RSUs [Member]
Class Of Stock [Line Items]
Vesting period	3 years
Percentage of units granted subject to vesting requirements	50.00%			50.00%
2021 Omnibus Incentive Plan | Performance-based RSUs [Member]
Class Of Stock [Line Items]
Percentage of units granted subject to vesting requirements	50.00%			50.00%

Earnings Per Share - Summary of

Earnings Per Share - Summary of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Sep. 30, 2020
Numerator
Net loss attributable to Alight, Inc. - basic and diluted	$ (107)	$ (39)	$ (25)	$ (85)
Denominator
Weighted average shares outstanding - basic and diluted	438,968,920
Basic and diluted net loss per share	$ (0.24)

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Details)	3 Months Ended
	Sep. 30, 2021shares
Warrants
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	59,633,274
RSUs [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	9,988,297
Seller Earnouts
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	14,999,998
Performance-based RSUs [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	16,043,624
Noncontrolling Interest
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	77,459,687

Segment Reporting - Schedule of

Segment Reporting - Schedule of Current Reportable Segments by Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Revenue	$ 690	$ 668	$ 1,361	$ 2,008
Employer Solutions
Segment Reporting Information [Line Items]
Revenue	587	559	1,156	1,678
Employer Solutions | Recurring
Segment Reporting Information [Line Items]
Revenue	522	498	1,049	1,516
Employer Solutions | Project
Segment Reporting Information [Line Items]
Revenue	65	61	107	162
Professional Services
Segment Reporting Information [Line Items]
Revenue	93	93	184	272
Professional Services | Recurring
Segment Reporting Information [Line Items]
Revenue	32	28	60	78
Professional Services | Project
Segment Reporting Information [Line Items]
Revenue	61	65	124	194
Hosted Business
Segment Reporting Information [Line Items]
Revenue	$ 10	$ 16	$ 21	$ 58

Segment Reporting - Schedule _2

Segment Reporting - Schedule of Current Reportable Segments by Segment Profit (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Segment Profit	$ 153	$ 132	$ 278	$ 416
Share-based compensation	15	1	5	5
Transaction and integration	3
Non-recurring professional expenses	17		18
Transformation initiatives				11
Restructuring	3	10	9	57
Other	2	4	(5)	28
Depreciation	14	24	49	66
Intangible amortization expense	74	51	100	151
Operating Income	25	42	102	98
Loss from change in fair value of financial instruments	90
Loss from change in fair value of tax receivable agreement	27
Interest expense	28	61	123	172
Other expense (income), net		3	9	(1)
Loss Before Income Tax (Benefit) Expense	(120)	(22)	(30)	(73)
Employer Solutions
Segment Reporting Information [Line Items]
Segment Profit	151	120	274	389
Professional Services
Segment Reporting Information [Line Items]
Segment Profit	4	$ 12	7	23
Hosted Business
Segment Reporting Information [Line Items]
Segment Profit	$ (2)		$ (3)	$ 4

Segment Reporting - Additional

Segment Reporting - Additional Information (Details) - Customer	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting [Abstract]
Number of single client comprising more than 10% of revenues	0	0

Derivative Financial Instrume_3

Derivative Financial Instruments - Schedule of Swap Agreements That Will Fix the Floating Interest Rates Associated With Its Term Loan (Details) - Interest Rate Swaps	9 Months Ended
	Sep. 30, 2021USD ($)
July 2021 Term Loan One
Derivatives Fair Value [Line Items]
Designation Date	2021-07
Effective Date	2020-08
Initial Notional Amount	$ 557,500,000
Notional Amount Outstanding as of September 30, 2021	$ 557,500,000
Fixed Rate	2.507%
Expiration Date	2022-05
July 2021 Term Loan Two
Derivatives Fair Value [Line Items]
Designation Date	2021-07
Effective Date	2020-08
Initial Notional Amount	$ 89,863,420
Notional Amount Outstanding as of September 30, 2021	$ 98,078,920
Fixed Rate	3.0854%
Expiration Date	2023-02
July 2021 Term Loan Three
Derivatives Fair Value [Line Items]
Designation Date	2021-07
Effective Date	2020-08
Initial Notional Amount	$ 181,205,050
Notional Amount Outstanding as of September 30, 2021	$ 168,155,300
Fixed Rate	0.7775%
Expiration Date	2024-05
July 2021 Term Loan Four
Derivatives Fair Value [Line Items]
Designation Date	2021-07
Effective Date	2020-08
Initial Notional Amount	$ 388,877,200
Notional Amount Outstanding as of September 30, 2021	$ 373,963,200
Fixed Rate	0.743%
Expiration Date	2024-05
July 2021 Term Loan Five
Derivatives Fair Value [Line Items]
Designation Date	2021-07
Effective Date	2022-05
Initial Notional Amount	$ 220,130,318
Fixed Rate	0.517%
Expiration Date	2024-05
July 2021 Term Loan Six
Derivatives Fair Value [Line Items]
Designation Date	2021-07
Effective Date	2022-05
Initial Notional Amount	$ 306,004,562
Fixed Rate	0.5127%
Expiration Date	2024-05

Derivative Financial Instrume_4

Derivative Financial Instruments - Additional Information (Details) $ in Millions	1 Months Ended	9 Months Ended
	Jul. 31, 2021USD ($)Hedge	Sep. 30, 2021USD ($)
Derivative [Line Items]
Number of hedges terminated | Hedge	3
Number of previously unfloored hedges amended | Hedge	2
Interest rate floor basis points	0.50%
Derivative losses included in Accumulated other comprehensive loss to be reclassified into earnings over next twelve months | $		$ 2
Term Loan
Derivative [Line Items]
Repayment of principal | $	$ 556

Derivative Financial Instrume_5

Derivative Financial Instruments - Schedule of Fair Values and Location of Outstanding Derivative Instruments Recorded in the Condensed Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Derivatives Fair Value [Line Items]
Total Assets	$ 5
Total Liabilities	13	$ 47
Other Assets
Derivatives Fair Value [Line Items]
Total Assets	5
Other Current Liabilities
Derivatives Fair Value [Line Items]
Total Liabilities	12	28
Other Liabilities
Derivatives Fair Value [Line Items]
Total Liabilities	$ 1	$ 19

Financial Instruments - Seller

Financial Instruments - Seller Earnouts - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021
Financial Instruments [Abstract]
Fair value of seller earnouts		$ 144
Loss (gain) from change in fair value of seller earnouts	$ 35

Financial Instruments - Warrant

Financial Instruments - Warrants - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	May 26, 2020	Sep. 30, 2021	Sep. 30, 2021
Class Of Warrant Or Right [Line Items]
Warrants outstanding		59,633,274	59,633,274
Warrants expiration date		Jul. 2, 2026	Jul. 2, 2026
Warrants expiration term		5 years	5 years
Fair value of warrants		$ 182	$ 182
Loss (gain) from change in fair value of warrant liabilities		$ 55
Redemption of Warrants When the Price per Share of Class A Common Stock Equals or Exceeds $18.00
Class Of Warrant Or Right [Line Items]
Redemption price per warrant (in dollars per share)			$ 0.01
Stock price trigger for redemption of warrants (in dollars per share)			18
Redemption of Warrants When Price per Share of Class A Common Stock Greater than 10.00 but Less than 18.00
Class Of Warrant Or Right [Line Items]
Redemption price per warrant (in dollars per share)			0.10
Redemption of Warrants When Price per Share of Class A Common Stock Greater than 10.00 but Less than 18.00 | Minimum
Class Of Warrant Or Right [Line Items]
Stock price trigger for redemption of warrants (in dollars per share)			10
Redemption of Warrants When Price per Share of Class A Common Stock Greater than 10.00 but Less than 18.00 | Maximum
Class Of Warrant Or Right [Line Items]
Stock price trigger for redemption of warrants (in dollars per share)			$ 18
Private Placement Warrants
Class Of Warrant Or Right [Line Items]
Number of shares issuable per warrant		1	1
Private Placement Warrants | Class A Common Stock
Class Of Warrant Or Right [Line Items]
Share price per share		$ 11.50	$ 11.50
FTAC | Private Placement Warrants
Class Of Warrant Or Right [Line Items]
Number of warrants issued	15,133,333
FTAC | Public Warrants
Class Of Warrant Or Right [Line Items]
Number of warrants issued	34,499,941
FTAC | Forward Purchase Warrants
Class Of Warrant Or Right [Line Items]
Number of warrants to be purchased	10,000,000

Fair Value Measurement - Schedu

Fair Value Measurement - Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Measured at Fair Value on Recurring Basis - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Assets
Total assets recorded at fair value	$ 5
Liabilities
Total liabilities recorded at fair value	973	$ 73
Interest Rate Swaps
Assets
Total assets recorded at fair value	5
Liabilities
Total liabilities recorded at fair value	13	47
Contingent Consideration Liability
Liabilities
Total liabilities recorded at fair value	29	26
Seller Earnouts Liability
Liabilities
Total liabilities recorded at fair value	144
Warrant Liability
Liabilities
Total liabilities recorded at fair value	182
Tax Receivable Agreement Liability
Liabilities
Total liabilities recorded at fair value	605
Level 1
Liabilities
Total liabilities recorded at fair value	182
Level 1 | Warrant Liability
Liabilities
Total liabilities recorded at fair value	182
Level 2
Assets
Total assets recorded at fair value	5
Liabilities
Total liabilities recorded at fair value	13	47
Level 2 | Interest Rate Swaps
Assets
Total assets recorded at fair value	5
Liabilities
Total liabilities recorded at fair value	13	47
Level 3
Liabilities
Total liabilities recorded at fair value	778	26
Level 3 | Contingent Consideration Liability
Liabilities
Total liabilities recorded at fair value	29	$ 26
Level 3 | Seller Earnouts Liability
Liabilities
Total liabilities recorded at fair value	144
Level 3 | Tax Receivable Agreement Liability
Liabilities
Total liabilities recorded at fair value	$ 605

Fair Value Measurement - Summar

Fair Value Measurement - Summary of Changes in Deferred Contingent Consideration Liabilities (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Sep. 30, 2020
Fair Value Disclosures [Abstract]
Beginning balance	$ 29	$ 29	$ 26	$ 22
Acquisitions	0	3	2	3
Accretion of contingent consideration	0	0	1	0
Ending Balance	$ 29	$ 25	$ 29	$ 25

Fair Value Measurement - Reconc

Fair Value Measurement - Reconciliation of TRA Liability and Seller Earnout Liability (Details) $ in Millions	3 Months Ended
	Sep. 30, 2021USD ($)
Tax Receivable Agreement Liability
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Beginning Balance	$ 578
Loss from change in fair value of TRA	27
Ending Balance	605
Seller Earnouts Liability
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Beginning Balance	109
Loss from change in fair value of Seller Earnouts	35
Ending Balance	$ 144

Fair Value Measurement - Sche_2

Fair Value Measurement - Schedule of Financial Liabilities Not Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Current portion of long term debt	$ 43	$ 37
Long term debt	2,839	4,041
Total debt, net	2,882	4,078
Carrying Value [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Current portion of long term debt	43	37
Long term debt	2,839	4,041
Total debt, net	2,882	4,078
Fair Value [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Current portion of long term debt	43	37
Long term debt	2,848	4,090
Total debt, net	$ 2,891	$ 4,127

Fair Value Measurement - Additi

Fair Value Measurement - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Sep. 30, 2020
Fair Value Disclosures [Abstract]
Fair value, assets, Level 1 to Level 2 transfers, amount	$ 0	$ 0	$ 0	$ 0
Fair value, assets, Level 2 to Level 1 transfers, amount		0	0	0
Fair value, liabilities, Level 1 to Level 2 transfers, amount	0	0	0	0
Fair value, liabilities, Level 2 to Level 1 transfers, amount		0	0	0
Fair value, measurement with unobservable inputs reconciliation, liability, transfers into Level 3	$ 0	0	0	0
Fair Value, measurement with unobservable inputs reconciliation, liability, transfers out of Level 3		$ 0	$ 0	$ 0

Restructuring and Integration -

Restructuring and Integration - Additional Information (Details) - USD ($) $ in Millions	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
Restructuring Cost And Reserve [Line Items]
Expected cumulative costs	$ 135
Total expenses	103
Accrued restructuring liability	4	$ 6		$ 15
Severance and Related Benefits
Restructuring Cost And Reserve [Line Items]
Accrued restructuring liability	4	$ 6		12
Other Restructuring Costs
Restructuring Cost And Reserve [Line Items]
Accrued restructuring liability				$ 3
The Plan [Member]
Restructuring Cost And Reserve [Line Items]
Expected cumulative costs			$ 135
Expected annual cost savings by 2022			196
Total expenses	$ 103
The Plan [Member] | Severance and Related Benefits
Restructuring Cost And Reserve [Line Items]
Expected cumulative costs			80
The Plan [Member] | Other Restructuring Costs
Restructuring Cost And Reserve [Line Items]
Expected cumulative costs			$ 55

Restructuring and Integration_2

Restructuring and Integration - Summary of Restructuring Costs (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Sep. 30, 2021	Jun. 30, 2021
Restructuring Cost And Reserve [Line Items]
Restructuring Costs	$ 3	$ 9
Inception to Date	103
Estimated Remaining Costs	32
Estimated Total Cost	135
Employer Solutions
Restructuring Cost And Reserve [Line Items]
Restructuring Costs	3	8
Inception to Date	90
Estimated Remaining Costs	25
Estimated Total Cost	115
Employer Solutions | Severance and Related Benefits
Restructuring Cost And Reserve [Line Items]
Restructuring Costs	1	6
Inception to Date	46
Estimated Remaining Costs	21
Estimated Total Cost	67
Employer Solutions | Other Restructuring Costs
Restructuring Cost And Reserve [Line Items]
Restructuring Costs	2	2
Inception to Date	44
Estimated Remaining Costs	4
Estimated Total Cost	48
Professional Services
Restructuring Cost And Reserve [Line Items]
Restructuring Costs		1
Inception to Date	13
Estimated Remaining Costs	7
Estimated Total Cost	20
Professional Services | Severance and Related Benefits
Restructuring Cost And Reserve [Line Items]
Restructuring Costs		$ 1
Inception to Date	8
Estimated Remaining Costs	5
Estimated Total Cost	13
Professional Services | Other Restructuring Costs
Restructuring Cost And Reserve [Line Items]
Inception to Date	5
Estimated Remaining Costs	2
Estimated Total Cost	$ 7

Restructuring and Integration_3

Restructuring and Integration - Schedule of Accrued Restructuring Liability (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Sep. 30, 2020
Restructuring Cost And Reserve [Line Items]
Accrued restructuring liability, Beginning balance	$ 6		$ 15
Restructuring charges	3	$ 10	9	$ 57
Cash payments	(5)		(18)
Accrued restructuring liability, Ending Balance	4		6
Severance and Related Benefits
Restructuring Cost And Reserve [Line Items]
Accrued restructuring liability, Beginning balance	6		12
Restructuring charges	1		7
Cash payments	(3)		(13)
Accrued restructuring liability, Ending Balance	4		6
Other Restructuring Costs
Restructuring Cost And Reserve [Line Items]
Accrued restructuring liability, Beginning balance			3
Restructuring charges	2		2
Cash payments	$ (2)		$ (5)

Employee Benefits - Additional

Employee Benefits - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Sep. 30, 2020
Compensation And Retirement Disclosure [Abstract]
Defined contribution savings plan expenses	$ 11	$ 9	$ 31	$ 38

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021USD ($)
Purchase Obligations
Commitment And Contingencies [Line Items]
Purchase obligation, remainder of 2021	$ 6
Purchase obligation, 2022	26
Purchase obligation, 2023	26
Purchase obligation, 2024	27
Purchase obligation, 2025	9
Purchase obligation, thereafter	7
Service Obligations
Commitment And Contingencies [Line Items]
Service obligation, remainder of 2021	34
Service obligation, 2022	141
Service obligation, 2023	147
Service obligation, 2024	154
Service obligation, 2025	162
Service obligation, thereafter	$ 502
Service obligation agreement termination fees percentage	25.00%
Service obligation maturity period	10 years

Subsequent Events - Additional

Subsequent Events - Additional Information (Details) - USD ($) $ in Millions	1 Months Ended
	Oct. 31, 2021	Sep. 30, 2021	Aug. 31, 2021	Dec. 31, 2020
Subsequent Event [Line Items]
Debt balance		$ 2,882		$ 4,078
Term Loan, Third Incremental
Subsequent Event [Line Items]
Debt balance			$ 525
Aon Retiree Health Exchange | Subsequent Event
Subsequent Event [Line Items]
Business combination, date of acquisition agreement	Oct. 31, 2021
Consideration transferred	$ 200
Consumer Medical, Inc | Subsequent Event
Subsequent Event [Line Items]
Business combination, date of acquisition agreement	Oct. 31, 2021