EPAM Systems (EPAM) 10-K 22 Feb 24 2023 FY Annual report Financial data

Cover Page

Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2023	Feb. 09, 2024	Jun. 30, 2023
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2023
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-35418
Entity Registrant Name	EPAM SYSTEMS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	22-3536104
Entity Address, Address Line One	41 University Drive
Entity Address, Address Line Two	Suite 202
Entity Address, City or Town	Newtown
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	18940
City Area Code	267
Local Phone Number	759-9000
Title of 12(b) Security	Common Stock, par value $0.001 per share
Trading Symbol	EPAM
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 12,606,792,746
Entity Common Stock, Shares Outstanding		57,827,498
Documents Incorporated by Reference	The registrant intends to file a definitive Proxy Statement for its 2024 annual meeting of stockholders pursuant to Regulation 14A within 120 days of the end of the registrant’s fiscal year ended December 31, 2023. Portions of the registrant’s Proxy Statement are incorporated by reference into Part III of this Annual Report on Form 10-K. With the exception of the portions of the Proxy Statement expressly incorporated by reference, such document shall not be deemed filed with this Annual Report on Form 10-K.
Entity Central Index Key	0001352010
Document Fiscal Year Focus	2023
Document Fiscal Period Focus (Q1,Q2,Q3,FY)	FY
Amendment Flag	false

Audit Information

Audit Information	12 Months Ended
	Dec. 31, 2023
Auditor Information [Abstract]
Auditor Firm ID	34
Auditor Name	DELOITTE & TOUCHE LLP
Auditor Location	Philadelphia, Pennsylvania

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 2,036,235	$ 1,681,344
Trade receivables and contract assets, net of allowance of $11,864 and $15,310, respectively	897,032	932,626
Short-term investments	60,739	60,336
Prepaid and other current assets	97,355	85,319
Total current assets	3,091,361	2,759,625
Property and equipment, net	235,053	273,348
Operating lease right-of-use assets, net	134,898	148,780
Intangible assets, net	71,118	77,652
Goodwill	562,459	529,072
Deferred tax assets	197,901	172,797
Other noncurrent assets	59,575	47,877
Total assets	4,352,365	4,009,151
Current liabilities
Accounts payable	31,992	30,852
Accrued compensation and benefits expenses	412,747	475,871
Accrued expenses and other current liabilities	124,823	154,339
Income taxes payable, current	38,812	46,069
Operating lease liabilities, current	36,558	40,352
Total current liabilities	644,932	747,483
Long-term debt	26,126	27,693
Operating lease liabilities, noncurrent	109,261	122,317
Other noncurrent liabilities	100,576	108,648
Total liabilities	880,895	1,006,141
Commitments and contingencies (Note 17)
Stockholders’ equity
Common stock, $0.001 par value; 160,000 authorized; 57,787 and 57,668 shares issued, 57,787 and 57,655 shares outstanding at December 31, 2023 and December 31, 2022, respectively	58	58
Additional paid-in capital	1,008,766	847,965
Retained earnings	2,501,107	2,248,948
Treasury stock	0	(118)
Accumulated other comprehensive loss	(39,040)	(95,321)
Total EPAM Systems Inc. stockholders’ equity	3,470,891	3,001,532
Noncontrolling interest in consolidated subsidiaries	579	1,478
Total equity	3,471,470	3,003,010
Total liabilities and equity	$ 4,352,365	$ 4,009,151

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets
Trade receivables and contract assets, allowance	$ 11,864	$ 15,310
Stockholders’ equity
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	160,000,000	160,000,000
Common stock, shares issued (in shares)	57,787,000	57,668,000
Common stock, shares outstanding (in shares)	57,787,000	57,655,000

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Statement [Abstract]
Revenues	$ 4,690,540	$ 4,824,698	$ 3,758,144
Operating expenses:
Cost of revenues (exclusive of depreciation and amortization)	3,256,514	3,286,683	2,483,697
Selling, general and administrative expenses	815,065	872,777	648,736
Depreciation and amortization expense	91,800	92,272	83,395
Loss on sale of business	25,922	0	0
Income from operations	501,239	572,966	542,316
Interest and other income/(loss), net	51,124	10,025	(1,727)
Foreign exchange loss	(15,778)	(75,733)	(7,197)
Income before provision for income taxes	536,585	507,258	533,392
Provision for income taxes	119,502	87,842	51,740
Net income	$ 417,083	$ 419,416	$ 481,652
Net income per share:
Basic (in dollars per share)	$ 7.21	$ 7.32	$ 8.52
Diluted (in dollars per share)	$ 7.06	$ 7.09	$ 8.15
Shares used in calculation of net income per share:
Basic (in shares)	57,829	57,291	56,511
Diluted (in shares)	59,085	59,169	59,064

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 417,083	$ 419,416	$ 481,652
Other comprehensive income/(loss):
Change in foreign currency translation adjustments, net of tax	58,179	(49,033)	(24,579)
Change in unrealized (loss)/gain on hedging instruments, net of tax	(487)	11,723	(7,059)
Defined benefit pension plans - actuarial (loss)/gain, net of tax	(1,411)	(3,804)	2,943
Other comprehensive income/(loss)	56,281	(41,114)	(28,695)
Comprehensive income	$ 473,364	$ 378,302	$ 452,957

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Common Stock Restricted stock units	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive (Loss)/Income	Non-controlling interest
Balance, beginning of period (in shares) at Dec. 31, 2020		56,108
Balance, beginning of period at Dec. 31, 2020	$ 1,983,018	$ 56		$ 660,771	$ 1,347,880	$ (177)	$ (25,512)	$ 0
Treasury stock, beginning of period (in shares) at Dec. 31, 2020						20
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock units vested (in shares)			311
Equity withheld for employee taxes (in shares)		(106)
Equity withheld for employee taxes	(45,070)			(45,070)
Stock-based compensation expense	69,899			69,899
Exercise of stock options (in shares)		536
Exercise of stock options	26,313	$ 1		26,312
Noncontrolling interests acquired in business combination	10,469							10,469
Purchase of subsidiary shares from noncontrolling interest	(1,749)							(1,749)
Other comprehensive income	(28,695)						(28,695)
Net income	481,652				481,652
Balance, end of period (in shares) at Dec. 31, 2021		56,849
Balance, end of period at Dec. 31, 2021	2,495,837	$ 57		711,912	1,829,532	$ (177)	(54,207)	8,720
Treasury stock, end of period (in shares) at Dec. 31, 2021						20
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock units vested (in shares)			252
Equity withheld for employee taxes (in shares)		(83)
Equity withheld for employee taxes	(23,650)			(23,650)
Stock-based compensation expense	107,513			107,513
Exercise of stock options (in shares)		511
Exercise of stock options	21,851	$ 1		21,850
Purchase of subsidiary shares from noncontrolling interest	(7,266)			49				(7,315)
Other comprehensive income	(41,114)						(41,114)
Net income	419,416				419,416
Stock issued in connection with Other 2021 acquisitions (Note 3) (in shares)		6				(6)
Stock issued in connection with Other 2021 acquisitions (Note 3)	2,000			1,941		$ 59
Issuance of common stock from employee stock purchase plan (in shares)		120
Issuance of common stock from employee stock purchase plan	28,350			28,350
Contributions to consolidated subsidiary from noncontrolling interest	$ 73							73
Balance, end of period (in shares) at Dec. 31, 2022	57,655	57,655
Balance, end of period at Dec. 31, 2022	$ 3,003,010	$ 58		847,965	2,248,948	$ (118)	(95,321)	1,478
Treasury stock, end of period (in shares) at Dec. 31, 2022						14
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock units vested (in shares)			336
Equity withheld for employee taxes (in shares)		(103)
Equity withheld for employee taxes	(29,301)			(29,301)
Stock-based compensation expense	135,500			135,500
Exercise of stock options (in shares)		398
Exercise of stock options	15,513	$ 0		15,513
Purchase of subsidiary shares from noncontrolling interest	(1,453)			(48)				(1,405)
Other comprehensive income	56,281						56,281
Net income	417,083				417,083
Stock issued in connection with Other 2021 acquisitions (Note 3) (in shares)		14				(14)
Stock issued in connection with Other 2021 acquisitions (Note 3)	3,000			2,882		$ 118
Issuance of common stock from employee stock purchase plan (in shares)		173
Issuance of common stock from employee stock purchase plan	36,255			36,255
Contributions to consolidated subsidiary from noncontrolling interest	506							506
Repurchase of common stock (in shares)		(686)
Repurchase of common stock	$ (164,924)				(164,924)
Balance, end of period (in shares) at Dec. 31, 2023	57,787	57,787
Balance, end of period at Dec. 31, 2023	$ 3,471,470	$ 58		$ 1,008,766	$ 2,501,107	$ 0	$ (39,040)	$ 579
Treasury stock, end of period (in shares) at Dec. 31, 2023						0

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net income	$ 417,083	$ 419,416	$ 481,652
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	91,800	92,272	83,401
Operating lease right-of-use assets amortization expense	40,902	47,777	61,750
Bad debt expense	4,047	12,394	2,488
Deferred taxes	(37,194)	(42,164)	(46,900)
Stock-based compensation expense	147,730	99,909	111,655
Unrealized (gain)/ loss on derivative instruments	(7,904)	7,904	0
Impairment charges	6,019	23,619	144
Loss on sale of business	25,922	0	0
Other	(599)	32,806	12,993
Changes in assets and liabilities:
Trade receivables and contract assets	32,356	(192,712)	(211,684)
Prepaid and other assets	8,409	(12,140)	(16,182)
Accounts payable	154	(2,934)	(2,403)
Accrued expenses and other liabilities	(84,610)	26,025	155,657
Operating lease liabilities	(48,093)	(51,668)	(63,812)
Income taxes payable	(33,388)	3,600	3,568
Net cash provided by operating activities	562,634	464,104	572,327
Cash flows from investing activities:
Purchases of property and equipment	(28,415)	(81,629)	(111,501)
Purchases of short-term investments	(11,169)	(60,000)	0
Proceeds from short-term investments	10,865	0	60,000
Acquisition of businesses, net of cash acquired (Note 3)	(24,817)	(10,644)	(314,958)
Cash sold as part of sale of business, net of proceeds	(2,169)	0	0
Purchases of non-marketable securities	(3,296)	(1,625)	(2,544)
Other investing activities, net	(7,767)	(29,029)	79
Net cash used in investing activities	(66,768)	(182,927)	(368,924)
Cash flows from financing activities:
Proceeds from issuance of stock under the employee incentive programs	51,636	50,660	26,286
Payments of withholding taxes related to net share settlements of restricted stock units	(29,102)	(26,556)	(41,598)
Proceeds from debt	825	1,763	31,109
Repayment of debt	(2,969)	(15,542)	(31,054)
Repurchase of common stock	(164,924)	0	0
Payment of contingent consideration for previously acquired businesses	(10,235)	(6,626)	(40,227)
Purchase of subsidiary shares from noncontrolling interest	(1,972)	(2,254)	(1,749)
Payment of deferred consideration for asset acquisitions	(4,979)	0	0
Other financing activities, net	(4,053)	(3,466)	(2,324)
Net cash used in financing activities	(165,773)	(2,021)	(59,557)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	29,379	(44,867)	(18,032)
Net increase in cash, cash equivalents and restricted cash	359,472	234,289	125,814
Cash, cash equivalents and restricted cash, beginning of period	1,683,636	1,449,347	1,323,533
Cash, cash equivalents and restricted cash, end of period	2,043,108	1,683,636	1,449,347
Cash paid during the year for:
Income taxes, net of refunds	177,426	113,188	87,317
Interest	4,698	1,659	413
Supplemental disclosure of non-cash investing and financing activities:
Acquisition-date fair value of contingent consideration issued for acquisition of businesses	14,850	2,645	57,249
Capital expenditures incurred but not yet paid	$ 23,986	$ 57,114	$ 7,738

CONSOLIDATED STATEMENTS OF CA_2

CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Balance sheet classification
Cash and cash equivalents	$ 2,036,235	$ 1,681,344	$ 1,446,625
Restricted cash in Prepaid and other current assets	5,294	430	495
Restricted cash in Other noncurrent assets	1,579	1,862	2,227
Total restricted cash	6,873	2,292	2,722
Total cash, cash equivalents and restricted cash	$ 2,043,108	$ 1,683,636	$ 1,449,347

ORGANIZATION AND SUMMARY OF SIG

ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2023
Accounting Policies [Abstract]
ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES EPAM Systems, Inc. (the “Company” or “EPAM”) is a leading digital transformation services and product engineering company, providing digital platform engineering and software development services to customers across six continents. In a business landscape that is constantly challenged by the pressures of digitization, EPAM focuses on building long-term partnerships with customers in various industries through innovative and scalable software solutions, integrated strategy, experience and technology consulting, and a continually evolving mix of advanced capabilities. The Company is incorporated in Delaware with headquarters in Newtown, Pennsylvania. Principles of Consolidation — The consolidated financial statements include the financial statements of EPAM and its subsidiaries. All intercompany balances and transactions have been eliminated. Use of Estimates — The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions. These estimates and assumptions affect reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements, as well as revenues and expenses during the reporting period. The Company bases its estimates and judgments on historical experience, knowledge of current conditions and its beliefs of what could occur in the future, given available information. Actual results could differ from those estimates, and such differences may be material to the financial statements. Cash and Cash Equivalents — Cash equivalents are short-term, highly liquid investments and deposits that are readily convertible into cash, with maturities of three months or less at the date acquired. Highly liquid investments with maturities greater than three months at the date acquired are reported separately from cash equivalents. Trade Receivables and Contract Assets — The Company classifies its right to consideration in exchange for deliverables as either a trade receivable or a contract asset. A trade receivable is a right to consideration that is unconditional (i.e., only the passage of time is required before payment is due) regardless of whether the amounts have been billed. Trade receivables are stated net of allowance for doubtful accounts. Outstanding trade receivables are reviewed periodically and allowances are provided for the estimated amount of receivables that may not be collected. The allowance for doubtful accounts is determined based on historical experience and management’s evaluation of trade receivables. A contract asset is a right to consideration that is conditional upon factors other than the passage of time. Contract assets primarily relate to unbilled amounts on fixed-price contracts. Contract assets are recorded when services have been provided but the Company does not have an unconditional right to receive consideration. The Company recognizes an impairment loss when the contract carrying amount is greater than the remaining consideration receivable, less directly related costs to be incurred. Property and Equipment — Property and equipment acquired in the ordinary course of the Company’s operations are stated at cost, net of accumulated depreciation. Depreciation is calculated on a straight-line basis over the estimated useful lives of the assets generally ranging from two Business Combinations — The Company accounts for business combinations using the acquisition method which requires it to estimate the fair value of identifiable assets acquired and liabilities assumed, including any contingent consideration, to properly allocate the purchase price to the individual assets acquired and liabilities assumed in accordance with the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 805, Business Combinations . A substantial portion of the purchase price is typically allocated to goodwill and other intangible assets, which usually include customer relationships, software, trade names, and assembled workforce. The allocation of the purchase price utilizes significant estimates in determining the fair values of identifiable assets acquired and liabilities assumed, especially with respect to intangible assets. The significant estimates and assumptions used include the timing and amount of forecasted revenues and cash flows, anticipated growth rates, customer attrition rates, the discount rate reflecting the risk inherent in future cash flows and the useful lives for finite-lived assets. There are different valuation models for each component, the selection of which requires considerable judgment. These determinations will affect the amount of amortization expense recognized in future periods. The Company bases its fair value estimates on assumptions it believes are reasonable but recognizes that the assumptions are inherently uncertain. If the initial accounting for the business combination has not been completed by the end of the reporting period in which the business combination occurs, provisional amounts are reported to present information about facts and circumstances that existed as of the acquisition date. Once the measurement period ends, which in no case extends beyond one year from the acquisition date, revisions to the accounting for the business combination are recorded in earnings. In some business combinations, the Company agrees to contingent consideration arrangements and the Company determines the fair value of contingent consideration using Monte Carlo simulations (which involve a simulation of future revenues and earnings during the earn-out period using management’s best estimates) or probability-weighted expected return methods. Changes in financial projections, market risk assumptions, discount rates or probability assumptions related to achieving the various earn-out criteria would result in a change in the fair value of contingent consideration. Such changes in the fair value of contingent consideration arrangements that are not measurement period adjustments are recorded within Interest and other income/(loss), net in the Company’s consolidated statements of income. All acquisition-related costs, other than the costs to issue debt or equity securities, are accounted for as expenses in the period in which they are incurred. Long-Lived Assets — Long-lived assets, such as property and equipment and finite-lived intangible assets, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. When the carrying value of an asset is more than the sum of the undiscounted expected future cash flows, an impairment is recognized. An impairment loss is measured as the excess of the asset’s carrying amount over its fair value. Intangible assets that have finite useful lives are amortized over their estimated useful lives on a straight-line basis. Goodwill and Other Indefinite-Lived Intangible Assets — Goodwill and other intangible assets that have indefinite useful lives are accounted for in accordance with FASB ASC 350, Intangibles — Goodwill and Other . The Company conducts its evaluation of goodwill impairment at the reporting unit level on an annual basis as of October 31st, and more frequently if events or circumstances indicate that the carrying value of a reporting unit exceeds its fair value. A reporting unit is an operating segment or one level below. The Company does not have intangible assets other than goodwill that have indefinite useful lives. Derivative Financial Instruments — The Company enters into derivative financial instruments to manage exposure to fluctuations in certain foreign currencies. The Company measures these foreign currency derivative contracts at fair value on a recurring basis utilizing Level 2 inputs and recognizes them as either assets or liabilities in its consolidated balance sheets. The Company records changes in the fair value of these hedges in accumulated other comprehensive loss until the forecasted transaction occurs. When the forecasted transaction occurs, the Company reclassifies the related gain or loss on the cash flow hedge to cost of revenues (exclusive of depreciation and amortization). In the event the underlying forecasted transaction does not occur, or it becomes probable that it will not occur, the Company reclassifies the gain or loss on the underlying hedge into income. If the Company does not elect hedge accounting, or the contract does not qualify for hedge accounting treatment, the changes in fair value from period to period are recorded in income. The cash flow impact of derivatives identified as hedging instruments is reflected as cash flows from operating activities. The cash flow impact of derivatives not identified as hedging instruments is reflected as cash flows from investing activities. Fair Value of Financial Instruments — The Company makes assumptions about fair values of its financial assets and liabilities in accordance with FASB ASC Topic 820, Fair Value Measurement , and utilizes the following fair value hierarchy in determining inputs used for valuation: Level 1 — Quoted prices for identical assets or liabilities in active markets. Level 2 — Inputs other than quoted prices within Level 1 that are observable either directly or indirectly, including quoted prices in markets that are not active, quoted prices in active markets for similar assets or liabilities, and observable inputs other than quoted prices such as interest rates or yield curves. Level 3 — Unobservable inputs reflecting management’s view about the assumptions that market participants would use in pricing the asset or liability. Where the fair values of financial assets and liabilities recorded in the consolidated balance sheets cannot be derived from an active market, they are determined using a variety of valuation techniques. These valuation techniques include a net present value technique, comparison to similar instruments with market observable inputs, option pricing models and other relevant valuation models. To the extent possible, observable market data is used as inputs into these models but when it is not feasible, a degree of judgment is required to establish fair values. Changes in the fair value of liabilities could cause a material impact to, and volatility in the Company’s operating results. See Note 5 “Fair Value Measurements.” Leases — The Company determines if an arrangement is a lease or contains a lease at inception. The Company performs an assessment and classifies the lease as either an operating lease or a financing lease at the lease commencement date with a right-of-use asset and a lease liability recognized in the consolidated balance sheet under both classifications. The Company does not have finance leases that are material to the Company’s consolidated financial statements. Lease liabilities are initially measured at the present value of lease payments not yet paid. The present value is determined by applying the readily determinable rate implicit in the lease or, if not available, the incremental borrowing rate of the lessee. The Company determines the incremental borrowing rate of the lessee on a lease-by-lease basis by developing an estimated centralized U.S. dollar borrowing rate for a fully collateralized obligation with a term similar to the lease term and adjusts the rate to reflect the incremental risk associated with the foreign currency in which the lease is denominated. The development of this estimate includes the use of recovery rates, U.S. risk-free rates, foreign currency/country base rate yields, and a synthetic corporate credit rating of the Company developed using regression analysis. Lease agreements of the Company may include options to extend or terminate the lease and the Company includes such options in the lease term when it is reasonably certain that the Company will exercise that option. Right-of-use assets are recognized based on the initial measurement of the lease liabilities plus initial direct costs less lease incentives and, according to the guidance for long-lived assets, right-of-use assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Lease expense for operating leases is recognized on a straight-line basis over the lease term. The Company elected a practical expedient to account for lease and non-lease components together as a single lease component. The Company also elected the short-term lease recognition exemption for all classes of lease assets with an original term of twelve months or less. Accumulated Other Comprehensive Loss — Accumulated other comprehensive loss consists of changes in the cumulative foreign currency translation adjustments and actuarial gains and losses on defined benefit pension plans. In addition, the Company enters into foreign currency exchange contracts, which are designated as cash flow hedges in accordance with FASB ASC Topic 815, Derivatives and Hedging. Changes in the fair values of these foreign currency exchange contracts are recognized in Accumulated other comprehensive loss on the Company's consolidated balance sheets until the settlement of those contracts. Revenue Recognition — The Company recognizes revenue in accordance with ASC 606 which requires entities to recognize revenue to depict the transfer of promised goods or services in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services as well as requires additional disclosure about the nature, amount, timing and uncertainty of revenues and cash flows arising from customer contracts, including significant judgments and changes in judgments. The Company recognizes revenues when control of goods or services is passed to a customer in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods or services. Such control may be transferred over time or at a point in time depending on satisfaction of obligations stipulated by the contract. Consideration expected to be received may consist of both fixed and variable components and is allocated to each separately identifiable performance obligation based on the performance obligation’s relative standalone selling price. Variable consideration usually takes the form of volume-based discounts, service level credits, price concessions or incentives. Determining the estimated amount of such variable consideration involves assumptions and judgment that can have an impact on the amount of revenues reported. The Company derives revenues from a variety of service arrangements, which have been evolving to provide more customized and integrated solutions to customers by combining software engineering with customer experience design, business consulting and technology innovation services. Fees for these contracts may be in the form of time-and-materials or fixed-price arrangements. The Company generates the majority of its revenues under time-and-material contracts, which are billed using hourly, daily or monthly rates to determine the amounts to be charged directly to the customer. The Company applies a practical expedient and revenues related to time-and-material contracts are recognized based on the right to invoice for services performed. Fixed-price contracts include maintenance and support arrangements which may exceed one year in duration. Maintenance and support arrangements generally relate to the provision of ongoing services and revenues for such contracts are recognized ratably over the expected service period. Fixed-price contracts also include application development arrangements, where progress towards satisfaction of the performance obligation is measured using input or output methods and input methods are used only when there is a direct correlation between hours incurred and the end product delivered. Assumptions, risks and uncertainties inherent in the estimates used to measure progress could affect the amount of revenues, receivables and deferred revenues at each reporting period. Revenues from licenses which have significant stand-alone functionality are recognized at a point in time when control of the license is transferred to the customer. Revenues from licenses which do not have stand-alone functionality are recognized over time. If there is an uncertainty about the receipt of payment for the services, revenue recognition is deferred until the uncertainty is sufficiently resolved. The Company applies a practical expedient and does not assess the existence of a significant financing component if the period between transfer of the service to a customer and when the customer pays for that service is one year or less. The Company reports gross reimbursable “out-of-pocket” expenses incurred as both revenues and cost of revenues in the consolidated statements of income and comprehensive income. Revenues are sourced from four geographic markets: Americas, EMEA, APAC, and CEE. Americas includes revenues from customers in North, Central and South America; EMEA includes revenues from customers in Western Europe and the Middle East; APAC includes revenues from customers in East Asia, Southeast Asia and Australia; and CEE includes revenues from customers in Eastern Europe and Central Asia. Cost of Revenues (Exclusive of Depreciation and Amortization) — Consists principally of salaries, bonuses, fringe benefits, stock-based compensation, project related travel costs and fees for subcontractors that are assigned to customer projects. Salaries and other compensation expenses of the Company’s delivery professionals are reported as cost of revenues regardless of whether the employees are actually performing customer services during a given period. Selling, General and Administrative Expenses — Consists of expenses associated with promoting and selling the Company’s services and general and administrative functions of the business. These expenses include the costs of salaries, bonuses, fringe benefits, stock-based compensation, severance, bad debt, travel, legal and accounting services, insurance, facilities including operating leases, advertising and other promotional activities, and certain non-income taxes. Stock-Based Compensation — The Company recognizes the cost of its equity settled stock-based incentive awards based on the fair value of the award at the date of grant, net of estimated forfeitures. The fair value of these awards at the date of grant is generally based on the grant-date price of the company's shares. The grant date fair value for stock options and stock purchase rights under the Employee Stock Purchase Plan (”ESPP”) is estimated using the Black-Scholes option-pricing valuation model. The cost is generally expensed evenly over the service period, unless otherwise specified by the award agreement. The service period is the period over which the employee performs the related services, which is normally the same as the vesting period. Equity-based awards that do not require future service are expensed immediately. For awards with performance conditions, the amount of compensation cost we recognize over the requisite service period is based on the actual or expected achievement of the performance condition. Quarterly, the forfeiture assumption is adjusted to reflect actual forfeitures and such adjustment may affect the timing of recognition of the total amount of expense recognized over the vesting period. Stock-based awards that do not meet the criteria for equity classification are recorded as liabilities and adjusted to fair value at the end of each reporting period. Income Taxes — The provision for income taxes includes federal, state, local and foreign taxes. Deferred tax assets and liabilities are recognized for the estimated future tax consequences of temporary differences between the financial statement carrying amounts and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the year in which the temporary differences are expected to be reversed. Changes to enacted tax rates would result in either increases or decreases in the provision for income taxes in the period of changes. The realizability of deferred tax assets is primarily dependent on future earnings. The Company evaluates the realizability of deferred tax assets and recognizes a valuation allowance when it is more likely than not that all, or a portion of, deferred tax assets will not be realized. A reduction in estimated forecasted results may require that we record valuation allowances against deferred tax assets. Once a valuation allowance has been established, it will be maintained until there is sufficient positive evidence to conclude that it is more likely than not that the deferred tax assets will be realized. A pattern of sustained profitability will generally be considered as sufficient positive evidence to reverse a valuation allowance. If the allowance is reversed in a future period, the income tax provision will be correspondingly reduced. Accordingly, the increase and decrease of valuation allowances could have a significant negative or positive impact on future earnings. The United States subjects corporations to taxes on Global Intangible Low-Taxed Income (“GILTI”) earned by certain foreign subsidiaries. The Company elected to provide for the tax expense related to GILTI in the year the tax is incurred. Earnings per Share (“EPS”) — Basic EPS is computed by dividing income available to common shareholders by the weighted average number of shares of common stock outstanding during the period. Diluted earnings per share is computed by dividing income available to common shareholders by the weighted average number of shares of common stock outstanding during the period, increased by the number of additional shares of common stock that would have been outstanding if the potentially dilutive securities had been issued. Potentially dilutive securities include outstanding stock options, unvested restricted stock, unvested restricted stock units (“RSUs”) and the stock to be issued under the ESPP. The dilutive effect of potentially dilutive securities is reflected in diluted earnings per share by application of the treasury stock method. Foreign Currency Translation and Remeasurement — Assets and liabilities of consolidated foreign subsidiaries whose functional currency is not the U.S. dollar are translated into U.S. dollars at period-end exchange rates and revenues and expenses are translated into U.S. dollars at daily exchange rates. The adjustment resulting from translating the financial statements of such foreign subsidiaries into U.S. dollars is reflected as a cumulative translation adjustment and reported as a component of Accumulated other comprehensive loss. For consolidated foreign subsidiaries whose functional currency is not the local currency, transactions and balances denominated in the local currency are foreign currency transactions. Foreign currency transactions and balances related to non-monetary assets and liabilities are remeasured to the functional currency of the subsidiary at historical exchange rates while monetary assets and liabilities are remeasured to the functional currency of the subsidiary at period-end exchange rates. Foreign currency exchange gains or losses from remeasurement are included in income in the period in which they occur. Risks and Uncertainties — As a result of its global operations, the Company may be subject to certain inherent risks. Concentration of Credit — Financial instruments that potentially subject the Company to concentration of credit risk consist primarily of cash, cash equivalents, short-term investments and trade receivables. The Company maintains cash, cash equivalents and short-term investments with financial institutions. The Company believes its credit policies reflect normal industry terms and business risk and there is no expectation of non-performance by the counterparties. The Company has cash in several countries, including Ukraine and Belarus, where the banking sector remains subject to periodic instability; banking and other financial systems generally do not meet the banking standards of more developed markets; and bank deposits made by corporate entities are not insured. As of December 31, 2023, the Company had $45.8 million of cash and cash equivalents in banks in Ukraine and $38.3 million of cash and cash equivalents in banks in Belarus. Cash in Ukraine and Belarus is used for the operational needs of the local entities and cash balances change with the expected operating needs of these entities. The Company regularly monitors cash held in these countries and, to the extent the cash held exceeds amounts required to support its operations in these countries, the Company distributes the excess funds into markets with more developed banking sectors to the extent it is possible to do so. The Company places its cash and cash equivalents with financial institutions considered stable in the region, limits the amount of credit exposure with any one financial institution and conducts ongoing evaluations of the credit worthiness of the financial institutions with which it does business. However, a banking crisis, bankruptcy or insolvency of banks that process or hold the Company’s funds, or sanctions may result in the loss of deposits or adversely affect the Company’s ability to complete banking transactions, which could adversely affect the Company’s business and financial condition. Trade receivables are generally dispersed across many customers operating in different industries; therefore, concentration of credit risk is limited. Historically, credit losses and write-offs of trade receivables have not been material to the consolidated financial statements. If any of the Company’s customers enter bankruptcy protection or otherwise take steps to alleviate their financial distress, the Company’s credit losses and write-offs of trade receivables could increase, which would negatively impact its results of operations. Foreign currency risk — The Company’s global operations are conducted predominantly in U.S. dollars. Other than U.S. dollars, the Company generates revenues in various currencies, principally, euros, British pounds, Swiss francs and Canadian dollars and incurs expenditures principally in euros, Polish zlotys, Indian rupees, British pounds, Swiss francs, Hungarian forints, Mexican pesos, Colombian pesos, Canadian dollars and Chinese yuan renminbi. The Company’s international operations expose it to risk of adverse fluctuations in foreign currency exchange rates through the remeasurement of foreign currency denominated assets and liabilities (both third-party and intercompany) and translation of earnings and cash flows into U.S. dollars. The Company has a hedging program whereby it enters into a series of foreign exchange forward contracts with durations of twelve months or less that are designated as cash flow hedges of forecasted Polish zloty, Indian rupee and Hungarian forint transactions. See Note 6 “Derivative Financial Instruments ” for further information on the Company’s hedging program. Interest rate risk — The Company is exposed to market risk from changes in interest rates. Exposure to interest rate risk results primarily from variable rates related to cash and cash equivalent deposits, short-term investments, and the Company’s borrowings, mainly under the 2021 Credit Agreement, which is subject to a variety of rates depending on the type and timing of funds borrowed (See Note 10 “Debt”). The Company does not believe it is exposed to material direct risks associated with changes in interest rates related to these deposits, investments and borrowings. Adoption of New Accounting Standards There were no recently adopted accounting standards which had a material impact on the Company’s consolidated financial statements. Pending Accounting Standards From time to time, new accounting pronouncements are issued by the FASB or other standards-setting bodies that the Company will adopt according to the various timetables the FASB specifies. Unless otherwise discussed below, the Company believes the impact of recently issued standards that are not yet effective will not have a material impact on its consolidated financial statements upon adoption. Segment Reporting - Improvements to Reportable Segment Disclosures — In November 2023, the FASB issued Accounting Standard Update (“ASU”) No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. The update is intended to improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. The update is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted and requires retrospective application to all prior periods presented in the financial statements. The Company is currently assessing the impact that adopting this ASU will have on its consolidated financial statements and expects to adopt this ASU in the fourth quarter of 2024. Income Taxes - Improvements to Income Tax Disclosures — In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures , which requires disclosure of disaggregated income taxes paid, prescribes standard categories for the components of the effective tax rate reconciliation, and modifies other income tax-related disclosures. The new guidance is effective for annual periods beginning after December 15, 2024, with early adoption permitted and may be applied prospectively or retrospectively. The Company is currently assessing the timing and impact of adopting this ASU.

IMPACT OF THE INVASION OF UKRAI

IMPACT OF THE INVASION OF UKRAINE	12 Months Ended
	Dec. 31, 2023
Discontinued Operations and Disposal Groups [Abstract]
IMPACT OF THE INVASION OF UKRAINE	IMPACT OF THE INVASION OF UKRAINE On February 24, 2022, Russian forces attacked Ukraine and its people and EPAM has repeatedly called for an immediate end to this unlawful and unconscionable attack. As of December 31, 2023, the Company had $62.7 million of Property and equipment, net in Ukraine consisting of a building classified as construction-in-progress located in Kyiv with a net book value of $51.5 million, laptops with a net book value of $5.9 million, most of which are in the possession of employees, various office furniture, equipment and supplies with a net book value of $4.2 million, and leasehold improvements located throughout Ukraine with a net book value of $1.1 million. Additionally, as of December 31, 2023, the Company had Operating lease right-of-use assets located throughout Ukraine with a net book value of $6.6 million. Through the issuance date of these financial statements, the Company is not aware of any damage to its long-lived assets in Ukraine and the Company expects to continue to use these assets as part of its global delivery model. On March 4, 2022, the Company announced a $100 million humanitarian commitment to support its employees and their families in and displaced from Ukraine. This humanitarian commitment is in addition to donations from EPAM's customers and employees and the work of EPAM volunteers on the ground. During the years ended December 31, 2023 and 2022, the Company expensed $17.4 million and $44.8 million, respectively, related to this commitment which included special cash payments to support impacted employees, financial and medical support for impacted families, travel, meals and lodging expenses, and donations to third-party humanitarian organizations. Of the expensed amount for the year ended December 31, 2023 and 2022, $11.3 million and $29.0 million, respectively, is classified in Cost of revenues (exclusive of depreciation and amortization) and $6.1 million and $15.8 million, respectively, is classified in Selling, general and administrative expense on the consolidated financial statements. As of December 31, 2023, the Company has $37.8 million remaining to be expensed related to this humanitarian commitment. The Company executed its business continuity plans following the invasion to assist relocating employees residing in Ukraine and the surrounding region impacted by the war and geopolitical uncertainty to other countries and to assign delivery personnel in locations outside of the region to serve in unbilled standby or backup capacities to ensure the continuity of delivery for its customers who have substantial delivery exposure to Ukraine or other delivery concerns resulting from the invasion and ongoing war. In addition to costs incurred as part of EPAM’s humanitarian commitment to Ukraine, during the year ended December 31, 2023 and 2022, the Company incurred expenses of $1.8 million and $38.7 million, respectively, related to its geographic repositioning efforts, classified as Selling, general and administrative expenses and $9.4 million and $14.7 million, respectively, related to the standby resources, classified as Cost of revenues (exclusive of depreciation and amortization). During the year ended December 31, 2022, the Company also recorded an impairment charge of $1.3 million, classified as Interest and other income/(loss), net related to a financial asset in Ukraine which the Company believed to be unrealizable due to the events in Ukraine. In response to the attacks on Ukraine, EPAM announced on March 4, 2022, it would discontinue services to customers located in Russia. Based on this change in facts and circumstances, the long-term cash flow forecast for the Company’s operations in Russia and its Russia reporting unit were significantly reduced. The reduction in the long-term cash flow forecasts indicated that the carrying amounts of goodwill and long-lived assets associated with the Company’s Russia reporting unit and operations in Russia may not be recoverable, and the carrying value of these assets was tested for impairment. The Company relied on the income approach to estimate the fair values of the Russia reporting unit and long-lived assets and considered multiple scenarios including the continuing operation and exit of operations in Russia. Reflecting the negative long-term cash flow forecasts that each of these scenarios produced for these assets, during the three months ended March 31, 2022, the Company recorded impairments of Property and equipment, net Additionally, the Company evaluated trade receivables and contract assets for estimated future credit losses from customers located in Russia and recorded bad debt expense of $5.1 million reflecting the deterioration of creditworthiness of its customers in Russia during the year ended December 31, 2022. Bad debt expense is included in Selling, general and administrative expenses in the consolidated statements of income. Amounts recorded to bad debt expense during the year ended December 31, 2023 related to customers located in Russia were not material. Also, during the year ended December 31, 2022, t he Com pany incurred employee separation costs of $17.1 million i n connection with the decision to exit its operations in Russia, with no such cost s incurred during the year ended December 31, 2023. On July 26, 2023, the Company completed the sale of its remaining holdings in Russia to a third-party. The Company recorded a loss on sale

ACQUISITIONS

ACQUISITIONS	12 Months Ended
	Dec. 31, 2023
Business Combination and Asset Acquisition [Abstract]
ACQUISITIONS	ACQUISITIONS PolSource — On April 2, 2021, the Company acquired 100% of PolSource S.A. and its subsidiaries (“PolSource”), a Salesforce Platinum Consulting Partner with more than 350 experienced Salesforce specialists for a purchase price of $148.2 million including contingent consideration with an acquisition-date fair value of $35.4 million. At the time of the acquisition, the Company committed to paying up to $45.0 million in contingent consideration, subject to attainment of certain revenue, earnings and operational targets. CORE — On July 23, 2021, the Company acquired 100% of CORE SE and its subsidiaries (“CORE”), a professional service provider specializing in IT strategy and technology-driven transformations with office locations in Europe and the Middle East for a purchase price of $50.2 million including contingent consideration with an acquisition-date fair value of $4.0 million and deferred consideration of $7.8 million. The Company could pay up to $8.1 million in contingent consideration and the actual future payout is subject to attainment of certain revenue, earnings and operational targets. Emakina — On November 3, 2021, the Company completed the acquisition of 98.69% of Emakina Group SA and its subsidiaries (“Emakina”), a group of independent digital agencies, for a purchase price of $143.4 million in cash. On November 30, 2021, the Company completed the acquisition of the remaining 1.31% of Emakina Group SA’s outstanding shares for a purchase price of $1.7 million in cash. The following table summarizes the estimated fair values of the assets acquired and liabilities assumed as of the date of each respective acquisition and updated for any changes as of December 31, 2022: PolSource CORE Emakina Cash and cash equivalents $ 2,565 $ 11,283 $ 5,142 Trade receivables and contract assets 12,734 10,266 34,389 Prepaid and other current assets 814 5,430 3,109 Goodwill 125,265 24,194 139,417 Intangible assets 15,790 8,368 30,488 Property and equipment and other noncurrent assets 461 4,585 16,802 Total assets acquired $ 157,629 $ 64,126 $ 229,347 Accounts payable, accrued expenses and other current liabilities $ 5,337 $ 9,336 $ 37,469 Short-term debt — — 13,657 Long-term debt — — 8,874 Operating lease liabilities, noncurrent 157 2,056 5,541 Other noncurrent liabilities 3,963 2,525 9,319 Total liabilities assumed $ 9,457 $ 13,917 $ 74,860 Noncontrolling interest in consolidated subsidiaries — — 10,469 Net assets acquired $ 148,172 $ 50,209 $ 144,018 During the year ended December 31, 2022, the Company completed the purchase price allocation for the acquisitions of PolSource, CORE, and Emakina and the estimated fair values of the assets acquired and liabilities assumed have been finalized. The effect of adjustments recorded during the year ended December 31, 2022, that would have been recognized in a prior period if the adjustment to the preliminary amounts had been recognized as of the acquisition date of each respective acquisition was not material. The following table presents the estimated fair values and useful lives of intangible assets acquired from PolSource, CORE and Emakina as of the date of each respective acquisition and updated for any changes as of December 31, 2022: PolSource CORE Emakina Weighted Average Useful Life (in years) Amount Weighted Average Useful Life (in years) Amount Weighted Average Useful Life (in years) Amount Customer relationships 6 $ 14,790 6 $ 7,779 7 $ 27,822 Trade names 3 1,000 5 589 3 2,666 Total $ 15,790 $ 8,368 $ 30,488 The goodwill recognized as a result of the PolSource acquisition is attributable to synergies expected to be achieved by combining the businesses of EPAM and PolSource, expected future contracts, the assembled workforce acquired and other factors. The goodwill recognized as a result of the CORE acquisition is attributable to synergies expected to be achieved by expanding the Company’s ability to support customers as a strategic consultant in Europe and the Middle East, expected future contracts, the assembled workforce acquired and other factors. The goodwill recognized as a result of the Emakina acquisition is attributable to synergies expected to be achieved by enhancing EPAM’s digital experience practice as well as augmenting offerings in digital design and engineering capabilities, expected future contracts, the assembled workforce and other factors. The goodwill acquired as a result of the PolSource, CORE and Emakina acquisitions is not expected to be deductible for income tax purposes. During the year ended December 31, 2021, the Company recognized acquisition-related costs associated with the PolSource, CORE and Emakina acquisitions totaling $1.4 million, $1.2 million and $1.0 million, respectively. Acquisition-related costs incurred during the years ended December 31, 2023 and 2022 were not material. These costs are included in Selling, general and administrative expenses in the accompanying consolidated statements of income. Revenues generated by PolSource, CORE and Emakina included in the Company’s consolidated statement of income totaled $55.0 million, $14.1 million and $24.7 million during the year ended December 31, 2021, respectively. Pro forma results of operations have not been presented because the effect of these acquisitions on the Company’s consolidated financial statements was not material individually or in the aggregate. Other 2021 Acquisitions — During the year ended December 31, 2021, the Company completed four additional acquisitions with an aggregate purchase price of $65.2 million including contingent consideration with an acquisition-date fair value of $17.6 million. The Company could pay up to $30.2 million in contingent consideration and the actual future payouts are subject to attainment of specified performance targets during the periods ranging from 12 months to 48 months after the respective acquisition dates. These acquisitions increased EPAM’s e-platform offerings and expanded the Company’s geographical reach as well as added $14.1 million in intangible assets, consisting mainly of customer relationships. Revenues generated by these Other 2021 Acquisitions totaled $19.5 million during the year ended December 31, 2021. Pro forma results of operations have not been presented because the effect of these acquisitions on the Company’s consolidated financial statements was not material individually or in the aggregate. 2022 Acquisitions — During the year ended December 31, 2022, the Company completed two acquisitions with a total purchase price of $13.6 million including contingent consideration with acquisition-date fair value of $2.6 million. These acquisitions expanded EPAM’s capabilities to deliver end-to-end solutions for designing and building sophisticated commerce platforms, provided opportunities for geographic expansion as well as added $3.4 million of intangible assets, consisting of customer relationships. Revenues generated by these 2022 Acquisitions totaled $8.7 million during the year ended December 31, 2022. Pro forma results of operations have not been presented because the effect of these acquisitions on the Company’s consolidated financial statements was not material individually or in the aggregate. 2023 Acquisitions — During the year ended December 31, 2023, the Company completed two acquisitions with a total purchase price of $42.6 million including contingent consideration with acquisition-date fair value of $14.9 million. These acquisitions expanded EPAM’s capabilities in software design and product development, as well as added $13.9 million of intangible assets, consisting of customer relationships. Revenues generated by these 2023 Acquisitions totaled $8.2 million during the year ended December 31, 2023. Pro forma results of operations have not been presented because the effect of these acquisitions on the Company’s consolidated financial statements was not material individually or in the aggregate.

GOODWILL AND INTANGIBLE ASSETS,

GOODWILL AND INTANGIBLE ASSETS, NET	12 Months Ended
	Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND INTANGIBLE ASSETS, NET	GOODWILL AND INTANGIBLE ASSETS, NET Goodwill by reportable segment was as follows: North America Europe Russia Total Balance as of January 1, 2022 $ 217,594 $ 312,413 $ 716 $ 530,723 2022 Acquisitions — 10,124 — 10,124 Emakina acquisition purchase accounting adjustments — 2,602 — 2,602 PolSource acquisition purchase accounting adjustments (44) (30) — (74) CORE acquisition purchase accounting adjustments — 959 — 959 Other 2021 Acquisitions purchase accounting adjustments (20) 937 — 917 Goodwill impairment — — (686) (686) Effect of net foreign currency exchange rate changes (570) (14,893) (30) (15,493) Balance as of December 31, 2022 $ 216,960 $ 312,112 $ — $ 529,072 2023 Acquisitions 24,477 — — 24,477 2022 Acquisitions purchase accounting adjustments — 87 — 87 Effect of net foreign currency exchange rate changes 423 8,400 — 8,823 Balance as of December 31, 2023 $ 241,860 $ 320,599 $ — $ 562,459 See Note 2 “Impact of the Invasion of Ukraine” for more information regarding the goodwill impairment recorded in the Russia segment during the year ended December 31, 2022. The Russia segment had accumulated goodwill impairment losses of $2.9 million as of December 31, 2022, and $2.2 million as of December 31, 2021. On July 26, 2023, the Company completed the sale of its remaining holdings in Russia to a third-party. There were no accumulated goodwill impairment losses in the North America or Europe reportable segments as of December 31, 2023, 2022 or 2021. Intangible assets other than goodwill as of December 31, 2023 and 2022 were as follows: As of December 31, 2023 Weighted average life at acquisition (in years) Gross carrying amount Accumulated amortization Net Customer relationships 8 $ 171,735 $ (103,651) $ 68,084 Trade names 4 10,798 (9,588) 1,210 Software 6 6,134 (4,825) 1,309 Contract royalties 8 1,900 (1,385) 515 Total $ 190,567 $ (119,449) $ 71,118 As of December 31, 2022 Weighted average life at acquisition (in years) Gross carrying amount Accumulated amortization Net Customer relationships 8 $ 154,407 $ (82,505) $ 71,902 Trade names 4 10,520 (7,900) 2,620 Software 6 6,022 (3,644) 2,378 Contract royalties 8 1,900 (1,148) 752 Total $ 172,849 $ (95,197) $ 77,652 All of the intangible assets other than goodwill have finite lives and as such are subject to amortization. Amortization of the other intangible assets is recognized in Depreciation and amortization expense in the consolidated statements of income. The following table presents amortization expense recognized for the periods indicated: For the Years Ended December 31, 2023 2022 2021 Customer relationships $ 19,855 $ 18,946 $ 15,399 Trade names 1,522 1,909 842 Software 1,102 1,086 1,114 Contract royalties 238 238 238 Assembled workforce — 44 53 Total $ 22,717 $ 22,223 $ 17,646 Based on the carrying value of the Company’s existing intangible assets as of December 31, 2023, the estimated amortization expense for the future years is as follows: Year ending December 31, Amount 2024 $ 22,080 2025 18,264 2026 14,133 2027 9,870 2028 2,999 Thereafter 3,772 Total $ 71,118

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	12 Months Ended
	Dec. 31, 2023
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	FAIR VALUE MEASUREMENTS The Company carries certain assets and liabilities at fair value on a recurring basis on its consolidated balance sheets. The following table shows the fair values of the Company’s financial assets and liabilities measured at fair value on a recurring basis as of December 31, 2023: As of December 31, 2023 Balance Level 1 Level 2 Level 3 Foreign exchange derivative assets $ 10,416 $ — $ 10,416 $ — Total assets measured at fair value on a recurring basis $ 10,416 $ — $ 10,416 $ — Foreign exchange derivative liabilities $ 248 $ — $ 248 $ — Contingent consideration 23,150 — — 23,150 Total liabilities measured at fair value on a recurring basis $ 23,398 $ — $ 248 $ 23,150 The following table shows the fair values of the Company’s financial assets and liabilities measured at fair value on a recurring basis as of December 31, 2022. As of December 31, 2022 Balance Level 1 Level 2 Level 3 Foreign exchange derivative assets $ 12,191 $ — $ 12,191 $ — Rights to acquire noncontrolling interest in consolidated subsidiaries 334 — — 334 Total assets measured at fair value on a recurring basis $ 12,525 $ — $ 12,191 $ 334 Foreign exchange derivative liabilities $ 9,350 $ — $ 9,350 $ — Contingent consideration 24,308 — — 24,308 Total liabilities measured at fair value on a recurring basis $ 33,658 $ — $ 9,350 $ 24,308 The foreign exchange derivatives are valued using pricing models and discounted cash flow methodologies based on observable foreign exchange data at the measurement date. See Note 6 “Derivative Financial Instruments” for additional information regarding derivative financial instruments. As part of the acquisition of Emakina, the Company acquired rights to purchase certain noncontrolling interests in consolidated subsidiaries of Emakina in exchange for future cash payments determined by the future profitability of certain subsidiaries. The Company determines the fair value of these rights by (i) estimating the fair value of the noncontrolling interests in consolidated subsidiaries by applying an EBITDA multiple adjusted for a lack of control and marketability, less (ii) the fair value of expected future payments to settle the related contractual obligations. The Company purchased the majority of the noncontrolling interest in consolidated subsidiaries during the year ended December 31, 2022 and during the year ended December 31, 2023, the Company purchased the remaining noncontrolling interest in consolidated subsidiaries. The Company determines the fair value of the contingent consideration using Monte Carlo simulations or probability-weighted expected return methods. The fair value of the contingent consideration for the PolSource acquisition attributable to future revenues and earnings was measured utilizing a Monte Carlo simulation, based on future revenue and earnings projections of the business, revenue volatility and asset volatility of comparable companies, and a discount rate. The discount rate used to determine the fair value of this contingent consideration was 0.4% as of the acquisition date. The fair value of the contingent consideration for the PolSource acquisition attributable to future operating metrics was measured using a probability-weighted expected return method, based on the expected future payments using the earnout formula and performance targets specified in the purchase agreement and adjusting those estimates to reflect the probability of their achievement. The weighted average estimated future payments were then discounted to present value using a rate based on EPAM’s cost of debt. The discount rate used to determine the fair value of this contingent consideration was 0.4% as of the acquisition date. The fair value of the contingent consideration liabilities for all other acquisitions was determined using a probability-weighted expected return method and is based on the expected future payments to be made to the sellers of the acquired businesses in accordance with the provisions outlined in the respective purchase agreements. Although there is significant judgment involved, the Company believes its estimates and assumptions are reasonable. In determining fair value, the Company considered a variety of factors, including future performance of the acquired businesses using financial projections developed by the Company and market risk assumptions that were derived for revenue growth and earnings before interest and taxes. The Company estimated future payments using the earnout formula and performance targets specified in the purchase agreements and adjusted those estimates to reflect the probability of their achievement. Those weighted average estimated future payments were then discounted to present value using a rate based on the weighted average cost of capital of guideline companies. The discount rate used to determine the fair value of contingent consideration for 2023 Acquisitions was 16.0%. The discount rate used to determine the fair value of contingent consideration for the 2022 Acquisitions ranged from a minimum of 13.0% to a maximum of 15.0%. The discount rate used to determine the fair value of contingent consideration for the CORE acquisition was 13.0%. The discount rates used to determine the fair value of contingent consideration for the Other 2021 Acquisitions ranged from a minimum of 15.0% to a maximum of 22.0%. Changes in financial projections, market risk assumptions, discount rates or probability assumptions related to achieving the various earnout criteria would result in a change in the fair value of the recorded contingent liabilities. Such changes, if any, are recorded within Interest and other income/(loss), net in the Company’s consolidated statement of income. A reconciliation of the beginning and ending balances of Level 3 contingent consideration liabilities using significant unobservable inputs for the years ended December 31, 2021, December 31, 2022, and December 31, 2023 are as follows: Amount Contingent consideration liabilities as of January 1, 2021 $ 7,470 Acquisition date fair value of contingent consideration — PolSource acquisition 35,400 Acquisition date fair value of contingent consideration — CORE acquisition 4,007 Acquisition date fair value of contingent consideration — Emakina acquisition 213 Acquisition date fair value of contingent consideration — Other 2021 Acquisitions 17,629 Changes in fair value of contingent consideration included in Interest and other income/(loss), net 8,782 Payment of contingent consideration for previously acquired businesses (50,000) Effect of net foreign currency exchange rate changes (387) Contingent consideration liabilities as of December 31, 2021 $ 23,114 Acquisition date fair value of contingent consideration — 2022 Acquisitions 2,645 Changes in fair value of contingent consideration included in Interest and other income/(loss), net 11,101 Payment of contingent consideration for previously acquired businesses (11,328) Effect of net foreign currency exchange rate changes (1,224) Contingent consideration liabilities as of December 31, 2022 $ 24,308 Acquisition date fair value of contingent consideration — 2023 Acquisitions 14,850 Changes in fair value of contingent consideration included in Interest and other income/(loss), net 2,814 Payment of contingent consideration for previously acquired businesses (18,844) Effect of net foreign currency exchange rate changes 22 Contingent consideration liabilities as of December 31, 2023 $ 23,150 See Note 2 “Impact of the Invasion of Ukraine” for discussion of the nonrecurring Level 3 fair value assessment used in the impairment test of long-lived assets in Russia during the year ended December 31, 2022. Financial Assets and Liabilities Not Measured at Fair Value on a Recurring Basis The following tables present the estimated fair values of the Company’s financial assets and liabilities not measured at fair value on a recurring basis as of the dates indicated: Fair Value Hierarchy Balance Estimated Fair Value Level 1 Level 2 Level 3 December 31, 2023 Financial Assets: Cash equivalents: Money market funds $ 168,120 $ 168,120 $ 168,120 $ — $ — Time deposits $ 105,210 $ 105,210 $ — $ 105,210 $ — Total cash equivalents $ 273,330 $ 273,330 $ 168,120 $ 105,210 $ — Time deposits included in Short-term investments $ 60,739 $ 60,739 $ — $ 60,739 $ — Financial Liabilities: Borrowings under 2021 Credit Agreement $ 25,000 $ 25,000 $ — $ 25,000 $ — Deferred consideration for asset acquisition $ 46,954 $ 46,954 $ — $ 46,954 $ — Fair Value Hierarchy Balance Estimated Fair Value Level 1 Level 2 Level 3 December 31, 2022 Financial Assets: Cash equivalents: Money market funds $ 312,321 $ 312,321 $ 312,321 $ — $ — Total cash equivalents $ 312,321 $ 312,321 $ 312,321 $ — $ — Time deposits included in Short-term investments $ 60,336 $ 60,336 $ — $ 60,336 $ — Financial Liabilities: Short-term debt $ 2,861 $ 2,861 $ — $ 2,861 $ — Borrowings under 2021 Credit Agreement $ 25,000 $ 25,000 $ — $ 25,000 $ — Other long-term debt $ 2,693 $ 2,693 $ — $ 2,693 $ — Deferred consideration for asset acquisition $ 53,636 $ 53,636 $ — $ 53,636 $ — Non-Marketable Securities Without Readily Determinable Fair Values The Company holds investments in equity securities that do not have readily determinable fair values. These investments are recorded at cost and are remeasured to fair value based on certain observable price changes or impairment events as they occur. The carrying amount of these investments was $31.7 million and $28.4 million as of December 31, 2023 and December 31, 2022, respectively and is classified as Other noncurrent assets in the Company’s consolidated balance sheets.

DERIVATIVE FINANCIAL INSTRUMENT

DERIVATIVE FINANCIAL INSTRUMENTS	12 Months Ended
	Dec. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVE FINANCIAL INSTRUMENTS	DERIVATIVE FINANCIAL INSTRUMENTS In the normal course of business, the Company uses derivative financial instruments to manage the risk of fluctuations in foreign currency exchange rates. The Company has a hedging program whereby it enters into a series of foreign exchange forward contracts with durations of twelve months or less that are designated as cash flow hedges of forecasted Polish zloty, Indian rupee, and Hungarian forint transactions. During the three months ended March 31, 2022, in response to the invasion of Ukraine, the Company de-designated its Russian ruble foreign exchange forward contracts as hedges and entered into offsetting foreign exchange forward contracts with the same counterparty. The Company determined it was probable the underlying forecasted foreign currency transactions which were hedged would not occur and reclassified the accumulated loss of $43.9 million on the underlying hedges into income which is classified as foreign exchange loss in the consolidated statement of income. As of December 31, 2023, all of the Company’s Russian ruble foreign exchange forwards contracts had settled. The Company measures derivative instruments and hedging activities at fair value and recognizes them as either assets or liabilities in its consolidated balance sheets. Accounting for the gains and losses resulting from changes in fair value depends on the use of the derivative and whether it is designated and qualifies for hedge accounting. To receive hedge accounting treatment, all hedging relationships are formally documented at the inception of the hedge, and the hedges must be highly effective in offsetting changes to future cash flows on hedged transactions. As of December 31, 2023, all of the Company’s foreign exchange forward contracts were designated as hedges. Derivatives may give rise to credit risks from the possible non-performance by counterparties. The Company has limited its credit risk by entering into derivative transactions only with highly rated financial institutions and by conducting an ongoing evaluation of the creditworthiness of the financial institutions with which the Company does business. There is no financial collateral (including cash collateral) required to be posted by the Company related to the foreign exchange forward contracts. The fair value of foreign currency derivative instruments on the Company’s consolidated balance sheets as of December 31, 2023 and December 31, 2022 were as follows: As of December 31, 2023 As of December 31, 2022 Balance Sheet Classification Asset Derivatives Liability Derivatives Asset Derivatives Liability Derivatives Foreign exchange forward contracts - Prepaid expenses and other current assets $ 10,416 $ 12,191 Accrued expenses and other current liabilities $ 248 $ 1,445 Foreign exchange forward contracts - Accrued expenses and other current liabilities $ — $ 7,905

PROPERTY AND EQUIPMENT, NET

PROPERTY AND EQUIPMENT, NET	12 Months Ended
	Dec. 31, 2023
Property, Plant and Equipment [Abstract]
PROPERTY AND EQUIPMENT, NET	PROPERTY AND EQUIPMENT, NET Property and equipment, net consisted of the following: Weighted Average Useful Life As of December 31, 2023 As of December 31, 2022 Computer hardware 4 $ 155,991 $ 157,283 Purchased computer software 5 88,644 99,414 Buildings 45 54,899 54,627 Leasehold improvements 7 37,189 32,949 Furniture, fixture and other equipment 7 22,583 22,153 Office equipment 7 18,315 19,039 Land improvements 18 2,142 2,137 Land n/a 1,339 1,339 Construction in progress n/a 51,477 51,502 432,579 440,443 Less: accumulated depreciation and amortization (197,526) (167,095) Total $ 235,053 $ 273,348 Depreciation and amortization expense related to property and equipment was $68.2 million, $69.0 million and $65.5 million during the years ended December 31, 2023, 2022 and 2021, respectively. The Company has assets which generate lease income including subleases of portions of its office space to third parties. The gross amount of such assets was $5.9 million and $3.6 million, and the associated accumulated depreciation was $1.9 million and $0.3 million as of December 31, 2023 and 2022, respectively. Depreciation expense associated with these assets held under operating leases was $0.5 million for the year ended December 31, 2023, and $0.1 million in both years ended December 31, 2022 and 2021. The Company owns buildings located in Belarus, which are used in the Company’s normal operations as office space for its employees. On November 17, 2021, the Company acquired an office building in the process of being constructed in Kyiv, Ukraine for $50.1 million. Once completed, the acquired building is intended to be used in the Company’s normal operations as office space for its employees. The office building is classified as construction-in-progress as of December 31, 2023 and, due to Russia’s invasion of Ukraine, it is uncertain when this office building will be available for its intended use. See Note 2 “Impact of the Invasion of Ukraine” for more information regarding the assets in Ukraine. During the year ended December 31, 2022, the Company completed an asset acquisition of software licenses for use in the regular course of business for a purchase price of $66.1 million, which includes an upfront payment of $13.3 million and fixed deferred consideration, payable in annual installments, with an acquisition-date fair value of $52.8 million. To estimate fair value, the future payments were discounted to present value using a discount rate based on the estimated borrowing rate of the Company. The weighted average discount rate used to determine the acquisition-date fair value was 5.2%. During the year ended December 31, 2023, this agreement was amended resulting in the derecognition of $20.8 million of software license assets, net of accumulated depreciation, and $21.4 million of deferred consideration liability. As part of the amendment, the Company purchased new software licenses for use in the regular course of business for a purchase price of $26.7 million, which includes an upfront payment of $6.8 million and fixed deferred consideration, payable in annual installments, with an acquisition-date fair value of $19.9 million. To estimate fair value, the future payments were discounted to present value using a discount rate based on the estimated borrowing rate of the Company. The weighted average discount rate used to determine the acquisition-date fair value was 5.5%. See Note 17 “Commitments and Contingencies” for more information regarding the deferred consideration.

ACCRUED EXPENSES AND OTHER CURR

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES	12 Months Ended
	Dec. 31, 2023
Payables and Accruals [Abstract]
ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES	ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES Accrued expenses and other current liabilities consisted of the following: As of December 31, 2023 As of December 31, 2022 Value added taxes payable $ 39,852 $ 47,433 Deferred revenue 27,988 36,036 Contingent consideration, current (Note 5) 9,650 18,008 Other current liabilities and accrued expenses 47,333 52,862 Total $ 124,823 $ 154,339

LEASES

LEASES	12 Months Ended
	Dec. 31, 2023
Leases [Abstract]
LEASES	LEASES The Company leases office space, corporate apartments, office equipment, and vehicles. Many of the Company’s leases contain variable payments including changes in base rent and charges for common area maintenance or other miscellaneous expenses. Due to this variability, the cash flows associated with these variable payments are not included in the minimum lease payments used in determining the right-of-use assets and associated lease liabilities and are recognized in the period in which the obligation for such payments is incurred. The Company’s leases have remaining lease terms ranging from 0.1 to 8.1 years. Certain lease agreements, mainly for office space, include options to extend or terminate the lease before the expiration date. The Company considers such options when determining the lease term when it is reasonably certain that the Company will exercise that option. The Company leases and subleases a portion of its office space to third parties. Lease income and sublease income were immaterial for the years ended December 31, 2023, 2022 and 2021. See Note 2 “Impact of the Invasion of Ukraine” for discussion of impairment of right-of-use assets in Russia. During the years ended December 31, 2023, 2022 and 2021, the components of lease expense were as follows: Income Statement Classification Year Ended December 31, 2023 Year Ended December 31, 2022 Year Ended December 31, 2021 Operating lease cost Selling, general and administrative expenses $ 47,824 $ 51,775 $ 67,144 Variable lease cost Selling, general and administrative expenses 13,156 10,372 8,555 Short-term lease cost Selling, general and administrative expenses 5,602 5,289 2,248 Total lease cost $ 66,582 $ 67,436 $ 77,947 Supplemental cash flow information related to leases for the years ended December 31, 2023 and 2022 were as follows: Year Ended December 31, 2023 Year Ended December 31, 2022 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows used for operating leases $ 52,373 $ 54,344 Right-of-use assets obtained in exchange for lease obligations: Operating leases $ 18,063 $ 35,048 Non-cash net increase/ (decrease) due to lease modifications: Operating lease right-of-use assets $ 7,595 $ (2,934) Operating lease liabilities $ 9,198 $ (4,254) Weighted average remaining lease terms and discount rates as of December 31, 2023 and 2022, were as follows: As of December 31, 2023 As of December 31, 2022 Weighted average remaining lease term, in years: Operating leases 5.0 5.4 Weighted average discount rate: Operating leases 4.1 % 2.8 % As of December 31, 2023, operating lease liabilities will mature as follows: Year ending December 31, Lease Payments 2024 $ 41,495 2025 34,529 2026 28,579 2027 19,173 2028 16,477 Thereafter 19,732 Total lease payments 159,985 Less: imputed interest (14,166) Total $ 145,819 There were no lease agreements that contained material restrictive covenants or material residual value guarantees as of December 31, 2023. There were no material lease agreements signed with related parties as of December 31, 2023. As of December 31, 2023, the Company had committed to payments of $9.9 million related to operating lease agreements that had not yet commenced as of December 31, 2023. These operating leases will commence on various dates during 2024 with lease terms ranging from 0.5 to 7.0 years. The Company does not have any material finance lease agreements that had not yet commenced.

DEBT

DEBT	12 Months Ended
	Dec. 31, 2023
Debt Disclosure [Abstract]
DEBT	DEBT Revolving Credit Facility — On October 21, 2021, the Company replaced its 2017 credit facility with a new unsecured credit agreement (the “2021 Credit Agreement”) with PNC Bank, National Association; PNC Capital Markets LLC; Citibank N.A.; Wells Fargo Bank, National Association; Santander Bank, N.A.; and Raiffeisen Bank International AG (collectively the “Lenders”). The 2021 Credit Agreement provides for a revolving credit facility (the “2021 Revolving Facility”) with a borrowing capacity of $700.0 million, with the potential to increase the borrowing capacity up to $1,000.0 million if certain conditions are met. The 2021 Credit Agreement matures on October 21, 2026. Borrowings under the 2021 Revolving Facility may be denominated in U.S. dollars or up to a maximum of $150.0 million equivalent in British pounds sterling, Canadian dollars, euros or Swiss francs and other currencies as may be approved by the administrative agent and the Lenders. Borrowings under the 2021 Revolving Facility bear interest at either a base rate or Euro-rate plus a margin based on the Company’s leverage ratio. The base rate is equal to the highest of (a) the Overnight Bank Funding Rate, plus 0.5%, (b) the Prime Rate, or (c) the Daily Simple SOFR Rate, plus 1.0%, so long as the Daily Simple SOFR Rate is offered, ascertainable and not unlawful. As of December 31, 2023, the Company’s outstanding borrowings are subject to a SOFR-based interest rate, which resets regularly at issuance, based on lending terms. The 2021 Credit Agreement includes customary business and financial covenants that may restrict the Company’s ability to make or pay dividends (other than certain intercompany dividends) if a potential or an actual event of default has occurred or would be triggered. As of December 31, 2023, the Company was in compliance with all covenants contained in the 2021 Credit Agreement. The following table presents the outstanding debt and borrowing capacity of the Company under the 2021 Credit Agreement as of December 31, 2023 and 2022: As of December 31, 2023 As of December 31, 2022 Outstanding debt $ 25,000 $ 25,000 Interest rate 6.3 % 5.2 % Available borrowing capacity $ 675,000 $ 675,000 Maximum borrowing capacity $ 700,000 $ 700,000

PENSION AND POSTRETIREMENT BENE

PENSION AND POSTRETIREMENT BENEFITS	12 Months Ended
	Dec. 31, 2023
Retirement Benefits [Abstract]
PENSION AND POSTRETIREMENT BENEFITS	PENSION AND POSTRETIREMENT BENEFITS Defined Contribution Pension Plans The Company offers defined contribution plans for its employees in certain countries including a 401(k) retirement plan covering substantially all of the Company’s U.S. employees. Employer contributions charged to expense for defined contribution benefit plans for the years ended December 31, 2023, 2022 and 2021, were $31.4 million, $29.0 million, and $21.3 million, respectively. Defined Benefit Pension Plans The Company sponsors defined benefit pension plans for its employees in certain countries as governed by local regulatory requirements. During the years ended December 31, 2023, 2022, and 2021, the Company recorded expense of $9.4 million, $8.3 million and $5.5 million, respectively, related to these plans. As of December 31, 2023 and 2022, the amounts recognized in the Company's consolidated balance sheets for the Company's defined benefit pension plans, all of which were underfunded, were as follows: As of As of Liabilities recognized: Accrued compensation and benefits expenses $ 998 $ 832 Other noncurrent liabilities 14,912 9,793 Unfunded status $ 15,910 $ 10,625

COST OPTIMIZATION PROGRAM

COST OPTIMIZATION PROGRAM	12 Months Ended
	Dec. 31, 2023
Restructuring and Related Activities [Abstract]
COST OPTIMIZATION PROGRAM	COST OPTIMIZATION PROGRAM During the quarter ended September 30, 2023, the Company initiated a Cost Optimization Program to streamline operations and optimize corporate functions. This program is expected to include workforce reduction and closure of underutilized facilities. The total costs related to the Cost Optimization Program are classified in Selling, general and administrative expenses in the consolidated statements of income. The Company did not allocate these charges to individual segments as they are not considered by the chief operating decision maker during the review of segment results. Accordingly, such expenses are separately disclosed in our segment reporting as “Other unallocated expenses” (See Note 18 “Segment Information”). Activity in the Company’s restructuring reserves was as follows: Balance at December 31, 2022 Charges Payments Made Balance at December 31. 2023 2023 Cost Optimization Program Employee separation costs $ — $ 28,990 $ (22,024) $ 6,966 Total $ — $ 28,990 $ (22,024) $ 6,966 The charges reflected in the above activity of the restructuring reserves do not include 2023 Cost Optimization Program charges recorded directly to expenses during the year ended December 31, 2023, including facility exit costs of $6.1 million, as these charges are not recorded in the restructuring reserves on the consolidated balance sheet. Facility exit costs generally reflect the accelerated rent expense for ROU assets, expected lease termination costs, or costs that will continue to be incurred under the facility lease without future economic benefit to the Company. The Company expects to complete all restructuring actions commenced during the twelve months ended December 31, 2023 by the end of the first half of 2024 and to incur additional charges of approximately $2.3 million related primarily to employee severance. The actual amount and timing of severance and other costs are dependent in part upon local country consultation processes and regulations and may differ from our current expectations and estimates.

REVENUES

REVENUES	12 Months Ended
	Dec. 31, 2023
Revenue from Contract with Customer [Abstract]
REVENUES	REVENUES Revenues are sourced from four geographic markets: Americas, EMEA, APAC, and CEE. The Company presents and discusses revenues by customer location based on the location of the specific customer site that it serves, irrespective of the location of the headquarters of the customer or the location of the delivery center where the work is performed. Revenues by customer location is different from revenues by reportable segment as segments are not based on the geographic location of the customers, but instead they are based on the location of the Company’s management responsible for a particular customer or market (see Note 18 “Segment Information”). The Company assigns customers into one of five main industries or a group of various industries where the Company is increasing its presence, which is labeled as “Emerging Verticals.” Emerging Verticals include customers in multiple industries such as energy, utilities, manufacturing, automotive, telecommunications and several others. Disaggregation of Revenues The following tables present the disaggregation of the Company’s revenues by major customer location, including a reconciliation of the disaggregated revenues with the Company’s reportable segments (Note 18 “Segment Information”) for the years ended December 31, 2023, 2022 and 2021: Year Ended December 31, 2023 Reportable Segments North America Europe Russia Consolidated Revenues Customer Locations Americas $ 2,645,174 $ 96,857 $ 631 $ 2,742,662 EMEA 116,054 1,706,728 — 1,822,782 APAC 3,248 98,890 — 102,138 CEE 546 6,968 15,444 22,958 Revenues $ 2,765,022 $ 1,909,443 $ 16,075 $ 4,690,540 Year Ended December 31, 2022 Reportable Segments North America Europe Russia Consolidated Revenues Customer Locations Americas $ 2,792,156 $ 92,244 $ 2,804 $ 2,887,204 EMEA 95,706 1,642,114 99 1,737,919 APAC 3,837 116,533 — 120,370 CEE 6,855 2,165 70,185 79,205 Revenues $ 2,898,554 $ 1,853,056 $ 73,088 $ 4,824,698 Year Ended December 31, 2021 Reportable Segments North America Europe Russia Consolidated Revenues Customer Locations Americas $ 2,145,163 $ 77,351 $ 4,316 $ 2,226,830 EMEA 87,121 1,172,267 329 1,259,717 APAC 3,224 100,335 — 103,559 CEE 6,740 531 160,767 168,038 Revenues $ 2,242,248 $ 1,350,484 $ 165,412 $ 3,758,144 The following tables present the disaggregation of the Company’s revenues by industry vertical, including a reconciliation of the disaggregated revenues with the Company’s reportable segments (Note 18 “Segment Information”) for the years ended December 31, 2023, 2022 and 2021: Year Ended December 31, 2023 Reportable Segments North America Europe Russia Consolidated Revenues Industry Verticals Travel & Consumer $ 472,350 $ 596,830 $ 3,770 $ 1,072,950 Financial Services 538,837 472,146 7,450 1,018,433 Business Information & Media 429,800 323,985 196 753,981 Software & Hi-Tech 552,492 153,683 1,545 707,720 Life Sciences & Healthcare 429,245 60,549 120 489,914 Emerging Verticals 342,298 302,250 2,994 647,542 Revenues $ 2,765,022 $ 1,909,443 $ 16,075 $ 4,690,540 Year Ended December 31, 2022 Reportable Segments North America Europe Russia Consolidated Revenues Industry Verticals Travel & Consumer $ 505,227 $ 571,437 $ 15,560 $ 1,092,224 Financial Services 522,970 460,858 42,858 1,026,686 Business Information & Media 467,664 341,344 944 809,952 Software & Hi-Tech 655,122 136,273 1,866 793,261 Life Sciences & Healthcare 454,102 52,465 800 507,367 Emerging Verticals 293,469 290,679 11,060 595,208 Revenues $ 2,898,554 $ 1,853,056 $ 73,088 $ 4,824,698 Year Ended December 31, 2021 Reportable Segments North America Europe Russia Consolidated Revenues Industry Verticals Travel & Consumer $ 359,306 $ 354,041 $ 27,781 $ 741,128 Financial Services 361,611 372,394 114,365 848,370 Business Information & Media 389,613 275,502 1,826 666,941 Software & Hi-Tech 559,707 102,270 2,620 664,597 Life Sciences & Healthcare 340,706 49,900 703 391,309 Emerging Verticals 231,305 196,377 18,117 445,799 Revenues $ 2,242,248 $ 1,350,484 $ 165,412 $ 3,758,144 The Company derives revenues from a variety of customized and integrated service arrangements. These contracts may be in the form of time-and-materials or fixed-price arrangements. The following tables present the disaggregation of the Company’s revenues by contract type, including a reconciliation of the disaggregated revenues with the Company’s reportable segments (Note 18 “Segment Information”) for the years ended December 31, 2023, 2022 and 2021: Year Ended December 31, 2023 Reportable Segments North America Europe Russia Consolidated Revenues Contract Types Time-and-material $ 2,457,545 $ 1,613,790 $ 11,168 $ 4,082,503 Fixed-price 283,183 291,174 4,873 579,230 Licensing and other revenues 24,294 4,479 34 28,807 Revenues $ 2,765,022 $ 1,909,443 $ 16,075 $ 4,690,540 Year Ended December 31, 2022 Reportable Segments North America Europe Russia Consolidated Revenues Contract Types Time-and-material $ 2,615,213 $ 1,578,786 $ 45,581 $ 4,239,580 Fixed-price 263,603 269,669 27,195 560,467 Licensing and other revenues 19,738 4,601 312 24,651 Revenues $ 2,898,554 $ 1,853,056 $ 73,088 $ 4,824,698 Year Ended December 31, 2021 Reportable Segments North America Europe Russia Consolidated Revenues Contract Types Time-and-material $ 1,981,696 $ 1,145,606 $ 82,445 $ 3,209,747 Fixed-price 244,249 202,436 82,711 529,396 Licensing and other revenues 16,303 2,442 256 19,001 Revenues $ 2,242,248 $ 1,350,484 $ 165,412 $ 3,758,144 Timing of Revenue Recognition The following tables present the revenues disaggregated by timing of revenue recognition and reconciled with the Company’s reportable segments (Note 18 “Segment Information”) for the years ended December 31, 2023, 2022 and 2021: Year Ended December 31, 2023 Reportable Segments North America Europe Russia Consolidated Revenues Timing of Revenue Recognition Transferred over time $ 2,751,937 $ 1,907,010 $ 16,042 $ 4,674,989 Transferred at a point of time 13,085 2,433 33 15,551 Revenues $ 2,765,022 $ 1,909,443 $ 16,075 $ 4,690,540 Year Ended December 31, 2022 Reportable Segments North America Europe Russia Consolidated Revenues Timing of Revenue Recognition Transferred over time $ 2,888,342 $ 1,849,011 $ 72,795 $ 4,810,148 Transferred at a point of time 10,212 4,045 293 14,550 Revenues $ 2,898,554 $ 1,853,056 $ 73,088 $ 4,824,698 Year Ended December 31, 2021 Reportable Segments North America Europe Russia Consolidated Revenues Timing of Revenue Recognition Transferred over time $ 2,232,308 $ 1,349,956 $ 165,301 $ 3,747,565 Transferred at a point of time 9,940 528 111 10,579 Revenues $ 2,242,248 $ 1,350,484 $ 165,412 $ 3,758,144 During the years ended December 31, 2023, 2022 and 2021 the Company recognized $5.8 million, $7.5 million and $18.7 million, respectively, of revenues from performance obligations satisfied in previous periods. The following table includes the estimated revenues expected to be recognized in the future related to performance obligations that are partially or fully unsatisfied as of December 31, 2023. The Company applies a practical expedient and does not disclose the value of unsatisfied performance obligations for contracts that (i) have an original expected duration of one year or less and (ii) contracts for which it recognizes revenues at the amount to which it has the right to invoice for services provided: Less than 1 year 1 Year 2 Years 3 Years Total Contract Type Fixed-price $ 6,678 $ 810 $ 203 $ — $ 7,691 The Company applies a practical expedient and does not disclose the amount of the transaction price allocated to the remaining performance obligations nor provide an explanation of when the Company expects to recognize that amount as revenue for certain variable consideration. Contract Balances The following table provides information on the classification of contract assets and liabilities in the consolidated balance sheets: As of December 31, 2023 As of December 31, 2022 Contract assets included in Trade receivables and contract assets $ 24,309 $ 11,490 Contract liabilities included in Accrued expenses and other current liabilities $ 27,988 $ 36,036 Contract liabilities included in Other noncurrent liabilities $ 951 $ 42 Contract assets comprise amounts where the Company’s right to bill is contingent on something other than the passage of time. Contract assets have increased from December 31, 2022 primarily due to contracts where the Company’s right to bill is contingent upon achievement of contractual milestones. Contract liabilities comprise amounts collected from the Company's customers for revenues not yet earned and such amounts are anticipated to be recorded as revenues when services are performed in subsequent periods. Contract liabilities have decreased from December 31, 2022, primarily due to a reduction in advance payments from customers in 2023 as compared to 2022. During the year ended December 31, 2023, the Company recognized $30.6 million of revenues that were included in Accrued expenses and other current liabilities at December 31, 2022. During the year ended December 31, 2022, the Company recognized $35.4 million of revenues that were included in Accrued expenses and other current liabilities at December 31, 2021.

STOCKHOLDERS_ EQUITY

STOCKHOLDERS’ EQUITY	12 Months Ended
	Dec. 31, 2023
Share-Based Payment Arrangement [Abstract]
STOCKHOLDERS’ EQUITY	STOCKHOLDERS’ EQUITY Stock-Based Compensation The following costs related to the Company’s stock compensation plans were included in the consolidated statements of income: For the Years Ended December 31, 2023 2022 2021 Cost of revenues (exclusive of depreciation and amortization) $ 68,797 $ 47,470 $ 51,580 Selling, general and administrative expenses 78,933 52,439 60,075 Total $ 147,730 $ 99,909 $ 111,655 Equity Plans The Company has long-term incentive plans under which 2.962 million shares of common stock are available for issuance to Company personnel and 509 thousand shares of common stock are available for issuance to non-employee directors as of December 31, 2023. All of the awards issued pursuant to the long-term incentive plans expire 10 years from the date of grant. In addition, the Company maintains an Employee Stock Purchase Plan (“ESPP”) to enable eligible employees to purchase shares of EPAM’s common stock at a discount through payroll deductions of up to 10% of their eligible compensation at the end of each designated offering period, which occurs every six months ending April 30th and October 31st. The purchase price is equal to 85% of the fair market value of a share of EPAM’s common stock on the first date of an offering or the date of purchase, whichever is lower. As of December 31, 2023, 607 thousand shares of common stock remained available for issuance under the ESPP. Stock Options Stock option activity under the Company’s long-term incentive plans is set forth below: Number of Weighted Average Aggregate Weighted Average Options outstanding as of January 1, 2021 2,772 $ 61.71 $ 822,152 Options granted 94 $ 410.03 Options exercised (536) $ 49.13 Options forfeited (12) $ 248.74 Options outstanding as of December 31, 2021 2,318 $ 77.79 $ 1,369,132 Options granted 133 $ 277.85 Options exercised (514) $ 44.02 Options forfeited (11) $ 350.19 Options expired (3) $ 128.11 Options outstanding as of December 31, 2022 1,923 $ 98.92 $ 447,503 Options granted 114 $ 295.73 Options exercised (397) $ 39.01 Options forfeited (6) $ 316.91 Options expired (5) $ 340.13 Options outstanding as of December 31, 2023 1,629 $ 125.88 $ 289,552 3.4 Options vested and exercisable as of December 31, 2023 1,348 $ 91.33 $ 282,764 2.4 Options expected to vest as of December 31, 2023 268 $ 291.21 $ 6,609 8.3 The fair value of each option award is estimated on the date of grant using the Black-Scholes option valuation model. The model incorporated the following weighted average assumptions: For the Years Ended December 31, 2023 2022 2021 Expected volatility 50.2 % 46.7 % 35.3 % Expected term (in years) 6.23 6.24 6.24 Risk-free interest rate 3.6 % 2.6 % 1.2 % Expected dividends — % — % — % Expected volatility is based on the historical volatility of the Company’s stock price. The expected term represents the period of time that options granted are expected to be outstanding. The risk-free rate is based on the U.S. Treasury yield curve for the periods equal to the expected term of the options in effect at the time of grant. The Company has not declared or paid any dividends on its common stock and does not anticipate paying any dividends in the foreseeable future. The weighted average grant-date fair value of stock options granted during the years ended December 31, 2023, 2022 and 2021 was $156.11, $134.29 and $149.26, respectively. The total intrinsic value of options exercised during the years ended December 31, 2023, 2022 and 2021 was $89.8 million, $154.4 million and $251.9 million, respectively. The Company recognizes the fair value of each option as compensation expense on a straight-line basis over the requisite service period, which is generally the vesting period. The options are typically scheduled to vest over four years from the time of grant, subject to the terms of the applicable plan and stock option agreement. The Company records share-based compensation expense only for those awards that are expected to vest and as such, the Company applies an estimated forfeiture rate at the time of grant and adjusts the forfeiture rate estimate quarterly to reflect actual forfeiture activity. In general, in the event of a participant’s voluntary termination of service, unvested options are forfeited as of the date of such termination without any payment to the participant and the cumulative amount of previously recognized expense related to the forfeited options is reversed. As of December 31, 2023, $22.4 million of total remaining unrecognized compensation cost related to unvested stock options, net of estimated forfeitures, is expected to be recognized over a weighted average period of 2.2 years. Restricted Stock and Restricted Stock Units The Company grants restricted stock units (“RSUs”) to Company personnel and non-employee directors. In addition, the Company has issued in the past, and may issue in the future, equity awards to compensate employees of acquired businesses for future services. Equity settled awards granted in connection with acquisitions of businesses may be issued in the form of service-based awards requiring continuing employment with the Company, restricted stock subject to trading restrictions, and performance-based awards, which would vest only if certain specified performance and service conditions are met. The awards issued in connection with acquisitions of businesses are subject to the terms and conditions contained in the applicable award agreements and acquisition documents. Service-Based Awards The table below summarizes activity related to the Company’s equity-classified and liability-classified service-based awards for the years ended December 31, 2023, 2022 and 2021: Equity-Classified Equity-Classified Equity-Settled Restricted Stock Units Liability-Classified Cash-Settled Restricted Stock Units Number of Shares Weighted Average Grant Date Number of Shares Weighted Average Grant Date Number of Shares Weighted Average Grant Date Unvested service-based awards outstanding as of January 1, 2021 9 $ 167.18 686 $ 162.15 175 $ 141.16 Awards granted — $ — 238 $ 429.41 27 $ 394.24 Awards modified — $ — — $ — — $ — Awards vested — $ — (308) $ 139.83 (86) $ 118.05 Awards forfeited — $ — (40) $ 264.48 (4) $ 210.26 Unvested service-based awards outstanding as of December 31, 2021 9 $ 167.18 576 $ 277.38 112 $ 217.28 Awards granted — $ — 655 $ 287.13 51 $ 269.60 Awards modified — $ — (3) $ 387.74 3 $ 220.00 Awards vested (9) $ 167.18 (244) $ 235.96 (56) $ 184.96 Awards forfeited — $ — (68) $ 328.81 (11) $ 260.59 Unvested service-based awards outstanding as of December 31, 2022 — $ — 916 $ 291.19 99 $ 257.74 Awards granted — $ — 607 $ 288.49 36 $ 298.81 Awards modified — $ — (15) $ 278.52 15 $ 305.59 Awards vested — $ — (329) $ 278.25 (46) $ 242.07 Awards forfeited — $ — (105) $ 304.91 (6) $ 254.82 Unvested service-based awards outstanding as of December 31, 2023 — $ — 1,074 $ 292.45 98 $ 287.36 The fair value of vested service-based awards (measured at the vesting date) for the years ended December 31, 2023, 2022 and 2021 was as follows: For the Years Ended December 31, 2023 2022 2021 Equity-classified equity-settled Restricted stock $ — $ 3,990 $ — Restricted stock units 94,418 69,510 129,527 Liability-classified cash-settled Restricted stock units 13,229 16,238 33,947 Total fair value of vested service-based awards $ 107,647 $ 89,738 $ 163,474 As of December 31, 2023, $215.7 million of total remaining unrecognized stock-based compensation costs related to service-based equity-classified RSUs, net of estimated forfeitures, is expected to be recognized over the weighted average remaining requisite service period of 2.6 years. As of December 31, 2023, $18.5 million of total remaining unrecognized stock-based compensation costs related to service-based liability-classified RSUs, net of estimated forfeitures, is expected to be recognized over the weighted average remaining requisite service period of 2.4 years. The liability associated with the Company’s service-based liability-classified RSUs as of December 31, 2023 and 2022 was $8.7 million and $10.2 million, respectively, and is classified as Accrued compensation and benefits expenses in the consolidated balance sheets. Performance-Based Awards The table below summarizes activity related to the Company’s performance-based awards for the years ended December 31, 2023, 2022 and 2021: Equity-Classified Equity-Classified Number of Shares Weighted Average Grant Date Number of Shares Weighted Average Grant Date Unvested performance-based awards outstanding as of January 1, 2021 9 $ 165.87 21 $ 227.16 Awards granted — $ — 8 $ 574.98 Awards vested — $ — (4) $ 177.81 Awards forfeited — $ — (2) $ 334.78 Unvested performance-based awards outstanding as of December 31, 2021 9 $ 165.87 23 $ 339.69 Awards granted — $ — 6 $ 418.26 Awards vested — $ — (9) $ 238.96 Awards forfeited — $ — (5) $ 377.87 Unvested performance-based awards outstanding as of December 31, 2022 9 $ 165.87 15 $ 412.60 Awards granted — $ — 6 $ 258.19 Awards vested (9) $ 165.87 (7) $ 229.98 Awards forfeited — $ — (1) $ 363.93 Unvested performance-based awards outstanding as of December 31, 2023 — $ — 13 $ 441.87 As of December 31, 2023, $3.1 million of total remaining unrecognized stock-based compensation cost related to performance-based equity-classified RSUs is expected to be recognized over the weighted average remaining requisite service period of 2.0 years. The fair value of vested performance-based awards (measured at the vesting date) for the years ended December 31, 2023, 2022 and 2021 was as follows: For the Years Ended December 31, 2023 2022 2021 Equity-classified equity-settled Restricted stock $ 2,237 $ — $ — Restricted stock units $ 1,581 $ 2,914 $ 2,215 Total fair value of vested performance-based awards $ 3,818 $ 2,914 $ 2,215 Employee Stock Purchase Plan The ESPP enables eligible employees to purchase shares of EPAM’s common stock at a discount at the end of each designated offering period, which occurs every six months in April and November. The Company recognizes compensation expense related to shares issued pursuant to the ESPP on a straight-line basis over the six-months offering period. The Company uses the Black-Scholes option pricing model to calculate the fair value of shares issued under the ESPP. The Black-Scholes model relies on a number of key assumptions to calculate estimated fair values. The model incorporated the following weighted average assumptions for the years ended December 31, 2023, 2022 and 2021: For the Years Ended December 31, 2023 2022 2021 Expected volatility 48.0 % 86.8 % 23.1 % Expected term (in years) 0.50 0.50 0.50 Risk-free interest rate 5.3 % 3.0 % 0.1 % Expected dividends — % — % — % Expected volatility is based on the historical volatility of the Company’s stock price. The expected term represents the purchase period for the ESPP. The risk-free rate is based on the U.S. Treasury yield curve for the period equal to the expected term in effect at the time of grant. The Company has not declared or paid any dividends on its common stock and does not anticipate paying any dividends in the foreseeable future. During the year ended December 31, 2023, the weighted average price per share was $248.23 and the weighted average grant-date fair value per share was $69.74. During the year ended December 31, 2023, the ESPP participants purchased 173 thousand shares of common stock under the ESPP and the Company recognized $12.6 million of stock-based compensation expense related to the ESPP. As of December 31, 2023, total unrecognized stock-based compensation cost related to the ESPP was $3.7 million, which is expected to be recognized over a period of 0.33 years. During the year ended December 31, 2022, the weighted average price per share was $315.60 and the weighted average grant-date fair value per share was $119.76. During the year ended December 31, 2022, the ESPP participants purchased 120 thousand shares of common stock under the ESPP and the Company recognized $13.9 million of stock-based compensation expense related to the ESPP. During the year ended December 31, 2021, the weighted average price per share was $659.65 and the weighted average grant-date fair value per share was $141.86. As of December 31, 2021, no purchases were made under the ESPP. For the year ended December 31, 2021, the Company recognized $1.2 million of stock-based compensation expense related to the ESPP. Commitments for Future Equity Awards In connection with the Company’s acquisitions of businesses as discussed in Note 3 “Acquisitions”, EPAM enters into agreements that contractually commit it to granting equity awards at future dates. The agreements are unique to each acquisition and terms vary, including specifying either the number of future awards to be issued or a monetary value that will be settled with equity awards valued at future stock prices. As of December 31, 2023, the Company has commitments to grant up to $15.5 million of equity awards with the number of awards to be determined based on future stock prices. There is a service-based vesting requirement associated with these awards and certain of these awards contain performance criteria that will determine the amount of future awards to be issued. These awards are considered granted for accounting purposes. In determining the expense, the Company adjusts the expected settlement based on the probability of achievement of such performance criteria. Related to these awards, the amount of stock-based compensation expense recorded in the consolidated statements of income for the years ended December 31, 2023, 2022 and 2021 was not material. As of December 31, 2023, the Company has issued 10 thousand performance-based equity-classified RSUs which are not considered granted for accounting purposes as the future vesting conditions have not yet been determined. Share Repurchases On February 13, 2023, the Board of Directors authorized a share repurchase program for up to $500.0 million of the Company's outstanding common stock. EPAM may repurchase shares of its common stock on a discretionary basis from time to time through open market purchases, privately negotiated transactions or other means, including through the use of trading plans intended to qualify under Rule 10b5-1 under the Securities Exchange Act of 1934, as amended. The timing and total amount of stock repurchases will depend upon business, economic and market conditions, corporate and regulatory requirements, prevailing stock prices, and other considerations. The share repurchase program has a term of 24 months, may be suspended or discontinued at any time, and does not obligate the company to acquire any amount of common stock. During the year ended December 31, 2023, the Company repurchased 686 thousand shares of its common stock for $164.9 million in cash. All of the repurchased shares have been retired. As of December 31, 2023, a remaining balance of $335.1 million was available for purchases of the Company’s common stock under the share repurchase program authorized by the Company’s Board of Directors.

INCOME TAXES

INCOME TAXES	12 Months Ended
	Dec. 31, 2023
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES Income Before Provision for Income Taxes Income before provision for income taxes based on geographic location is disclosed in the table below: For the Years Ended December 31, 2023 2022 2021 Income before provision for income taxes: United States $ 210,875 $ 78,564 $ 128,498 Foreign 325,710 428,694 404,894 Total $ 536,585 $ 507,258 $ 533,392 Provision for Income Taxes The provision for income taxes consists of the following: For the Years Ended December 31, 2023 2022 2021 Current Federal $ 54,763 $ 20,044 $ 22,742 State 15,922 10,116 6,735 Foreign 86,012 99,847 69,162 Deferred Federal (20,519) (26,379) (40,421) State (5,206) (3,483) (2,576) Foreign (11,470) (12,303) (3,902) Total $ 119,502 $ 87,842 $ 51,740 As part of the U.S. Tax Act, as determined as of December 31, 2017, the Company was required to make annual installment payments for the one-time transition tax on accumulated foreign subsidiary earnings not previously subject to U.S. income tax at a rate of 15.5% to the extent of foreign cash and certain other net current assets and 8.0% on the remaining earnings. As of December 31, 2023, the remaining unpaid balance of this one-time transition tax was $25.6 million to be paid in annual installments with the final payment due in 2025. As of December 31, 2023, the Company had approximately $1.563 billion of accumulated undistributed foreign earnings that are expected to be indefinitely reinvested. Due to the enactment of the U.S. Tax Act and the one-time transition tax on accumulated foreign subsidiary earnings, these accumulated foreign earnings are no longer expected to be subject to U.S. federal income tax if repatriated but could be subject to state and foreign income and withholding taxes. Effective Tax Rate Reconciliation The reconciliation of the provision for income taxes at the federal statutory income tax rate to the Company’s effective income tax rate is as follows: For the Years Ended December 31, 2023 2022 2021 Provision for income taxes at federal statutory rate $ 112,690 $ 106,514 $ 112,016 Increase/(decrease) in taxes resulting from: GILTI and BEAT U.S. taxes 391 355 229 Excess tax benefits relating to stock-based compensation (19,829) (35,119) (71,628) Foreign tax expense and tax rate differential 5,208 4,902 (206) Effect of permanent differences 4,210 7,812 4,756 State taxes, net of federal benefit 12,347 9,323 9,192 Stock-based compensation expense 5,869 3,869 1,102 Impact of election to change entity classification (2,109) (8,264) — Tax credits (1,824) (2,876) (4,100) Other 2,549 1,326 379 Provision for income taxes $ 119,502 $ 87,842 $ 51,740 The Company’s worldwide effective tax rate for the years ended December 31, 2023, 2022 and 2021 was 22.3%, 17.3% and 9.7%, respectively. The provision for income taxes in the year ended December 31, 2023 was unfavorably impacted by a charge of $2.4 million reflecting an increase in U.S. state tax and a charge of $3.2 million for losses in certain foreign jurisdictions with no corresponding tax benefit. In addition, the Company recorded excess tax benefits upon vesting or exercise of stock-based awards of $19.8 million, $35.1 million and $71.6 million during the years ended December 31, 2023, 2022 and 2021, respectively. In Belarus, member technology companies of High-Technologies Park, including the Company’s local subsidiary, have a full exemption from Belarus income tax on qualifying income through January 2049. However, beginning February 1, 2018, the earnings of the Company’s Belarus local subsidiary became subject to U.S. income taxation due to the Company’s decision to change the tax status of the subsidiary. There was no aggregate dollar benefit derived or impact on diluted net income per share from this tax holiday for the years ended December 31, 2023, 2022 and 2021. Deferred Income Taxes Deferred income taxes reflect the net effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Significant components of the Company’s deferred tax assets and liabilities are as follows: As of December 31, 2023 As of December 31, 2022 Deferred tax assets: Property and equipment $ 13,359 $ 11,587 Accrued expenses 77,757 87,816 Accrued sales discounts 11,148 9,185 Stock-based compensation 36,488 33,078 Operating lease liabilities 40,549 43,662 R&D capitalization 77,601 36,915 Deferred consideration 13,762 14,030 Foreign currency exchange 2,688 11,284 Other 27,149 19,955 Deferred tax assets $ 300,501 $ 267,512 Less: valuation allowance (7,622) (6,728) Total deferred tax assets $ 292,879 $ 260,784 Deferred tax liabilities: Property and equipment $ 13,590 $ 15,324 Intangible assets 27,914 24,523 Operating lease right-of-use assets 39,551 42,211 U.S. taxation of foreign subsidiaries 13,955 11,465 Other 8,711 7,232 Total deferred tax liabilities $ 103,721 $ 100,755 Net deferred tax assets $ 189,158 $ 160,029 As of December 31, 2023 and 2022, the Company classified $8.7 million and $12.8 million, respectively, of deferred tax liabilities as Other noncurrent liabilities in the consolidated balance sheets. Included in the stock-based compensation expense deferred tax asset at December 31, 2023 and 2022 is $3.9 million and $4.6 million, respectively, that is related to acquisitions and is amortized for tax purposes over a 10 to 15-year period. As of December 31, 2023, the Company’s domestic and foreign net operating loss (“NOL”) carryforwards for income tax purposes were approximately $1.8 million and $54.8 million, respectively. If not utilized, the domestic NOL carryforwards will begin to expire in 2024. The foreign NOL carryforwards may be carried forward indefinitely, with the exception of $8.9 million that will begin to expire on various dates between 2024-2030 if not used. The Company maintains a valuation allowance primarily related to the net operating loss carryforwards in certain foreign jurisdictions that the Company believes are not likely to be realized, which totaled $35.0 million as of December 31, 2023. Unrecognized Tax Benefits As of December 31, 2023 and 2022, the total amount of gross unrecognized tax benefits was $11.5 million and $7.9 million, respectively. These amounts represent the amount of unrecognized tax benefits that, if recognized, would favorably affect the effective tax rate in future periods and are included in Income taxes payable, noncurrent within the consolidated balance sheets. The Company’s policy is to recognize interest and penalties related to uncertain tax positions as a component of its provision for income taxes. As of December 31, 2023 and 2022, the Company accrued $1.5 million and $0.7 million respectively, of interest and penalties resulting from such unrecognized tax benefits. A reconciliation of the beginning and ending balances of the gross unrecognized tax benefits changes for the years ended December 31, 2023, December 31, 2022 and December 31, 2021 are as follows: For the Years Ended December 31, 2023 2022 2021 Beginning Balance $ 7,865 $ 8,155 $ 3,317 Increases in tax positions from current year 3,307 4,739 5,310 Increases in tax positions from acquisitions — 393 — Increases in tax positions from prior years 716 2,447 1,350 Decreases in tax positions from prior years (47) (6,945) — Decreases due to lapse of statute of limitations (438) (1,121) (1,298) Currency 68 197 (524) Ending Balance $ 11,471 $ 7,865 $ 8,155 There were no tax positions for which it was reasonably possible that unrecognized tax benefits will significantly increase or decrease within twelve months of the reporting date. The Company is subject to taxation in the United States and various states and foreign jurisdictions including Germany, Ukraine, the United Kingdom, Canada, Switzerland, Netherlands, Poland, India, and Mexico. With few exceptions, as of December 31, 2023, the Company is no longer subject to U.S. federal, state, local or foreign examinations by tax authorities for years before 2019.

EARNINGS PER SHARE

EARNINGS PER SHARE	12 Months Ended
	Dec. 31, 2023
Earnings Per Share [Abstract]
EARNINGS PER SHARE	EARNINGS PER SHARE Basic earnings per share is computed by dividing net income available to common shareholders by the weighted-average number of shares of common stock outstanding during the period. For purposes of computing basic earnings per share, any unvested shares of restricted stock that have been issued by the Company and are contingently returnable to the Company are excluded from the weighted-average number of shares of common stock outstanding during the period. Diluted earnings per share is computed by dividing net income available to common shareholders by the weighted-average number of shares of common stock outstanding during the period increased to include the number of additional shares of common stock that would have been outstanding if the potentially dilutive securities had been issued. Potentially dilutive securities include outstanding stock options, unvested restricted stock, unvested equity-settled RSUs and the stock to be issued under the Company’s ESPP. The dilutive effect of potentially dilutive securities is reflected in diluted earnings per share by application of the treasury stock method. The following table sets forth the computation of basic and diluted earnings per share of common stock as follows: For the Years Ended December 31, 2023 2022 2021 Numerator for basic and diluted earnings per share: Net income $ 417,083 $ 419,416 $ 481,652 Numerator for basic and diluted earnings per share $ 417,083 $ 419,416 $ 481,652 Denominator: Weighted average common shares for basic earnings per share 57,829 57,291 56,511 Net effect of dilutive stock options, restricted stock units, restricted stock awards and stock issuable under the ESPP 1,256 1,878 2,553 Weighted average common shares for diluted earnings per share 59,085 59,169 59,064 Net Income per share: Basic $ 7.21 $ 7.32 $ 8.52 Diluted $ 7.06 $ 7.09 $ 8.15 The number of shares underlying equity-based awards that were excluded from the calculation of diluted earnings per share as their effect would be anti-dilutive was 415 thousand, 264 thousand and 32 thousand for the years ended December 31, 2023, 2022 and 2021, respectively.

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	12 Months Ended
	Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES Indemnification Obligations — In the normal course of business, the Company is a party to a variety of agreements under which it may be obligated to indemnify the other party for certain matters. These obligations typically arise in contracts where the Company customarily agrees to hold the other party harmless against losses arising from a breach of representations or covenants for certain matters, infringement of third-party intellectual property rights, data privacy violations, and certain tortious conduct in the course of providing services. The duration of these indemnifications varies, and in certain cases, is indefinite. The Company is unable to reasonably estimate the maximum potential amount of future payments under these or similar agreements due to the unique facts and circumstances of each agreement and the fact that certain indemnifications provide for no limitation to the maximum potential future payments under the indemnification. Management is not aware of any such matters that would have a material effect on the consolidated financial statements of the Company. Litigation — From time to time, the Company is involved in litigation, claims or other contingencies arising in the ordinary course of business. The Company accrues a liability when a loss is considered probable and the amount can be reasonably estimated. When a material loss contingency is reasonably possible but not probable, the Company does not record a liability, but instead discloses the nature and the amount of the claim, and an estimate of the loss or range of loss, if such an estimate can be made. Legal fees are expensed as incurred. In the opinion of management, the outcome of any existing claims and legal or regulatory proceedings, if decided adversely, is not expected to have a material effect on the Company’s business, financial condition, results of operations or cash flows. Ukraine Humanitarian Commitment — On March 4, 2022, EPAM announced that it has established a $100.0 million humanitarian commitment to support its employees in Ukraine and their families. See Note 2 “Impact of the Invasion of Ukraine” for more information regarding commitments to humanitarian aid for Ukraine. Deferred Consideration — During the year ended December 31, 2022, the Company purchased software licenses for use in the regular course of business in exchange for an upfront payment and fixed, subsequent annual payments due over the next 4 years. This agreement was modified during the year ended December 31, 2023. As of December 31, 2023, the undiscounted deferred consideration amounts owed totaled approximately $51.4 million and are expected to be paid as follows: $18.3 million in 2024, $16.6 million in 2025, and $16.5 million in 2026. See Note 7 “Property and Equipment, Net” for more information regarding the purchase of software licenses. Contractual Commitment — On March 31, 2023, the Company entered into a 5-year agreement for cloud services through which it committed to spending at least $75.0 million over the term of the agreement. The Company has the ability to cancel the commitment whereby it would incur a cancellation penalty of 20% of the remaining contractual commitment.

SEGMENT INFORMATION

SEGMENT INFORMATION	12 Months Ended
	Dec. 31, 2023
Segment Reporting [Abstract]
SEGMENT INFORMATION	SEGMENT INFORMATION The Company determines its business segments and reports segment information in accordance with how the Company’s chief operating decision maker (“CODM”) organizes the segments to evaluate performance, allocate resources and make business decisions. Segment results are based on the segment’s revenues and operating profit, where segment operating profit is defined as income from operations before unallocated costs. Expenses included in segment operating profit consist principally of direct selling and delivery costs as well as an allocation of certain shared services expenses. Certain corporate expenses are not allocated to specific segments as these expenses are not controllable at the segment level. Such expenses include certain types of professional fees, certain taxes included in operating expenses, compensation to non-employee directors and certain other general and administrative expenses, including compensation of specific groups of non-production employees. In addition, the Company does not allocate amortization of intangible assets acquired through business combinations, goodwill and other asset impairment charges, stock-based compensation expenses, acquisition-related costs and certain other one-time charges and benefits. These unallocated amounts are combined with total segment operating profit to arrive at consolidated income from operations as reported below in the reconciliation of segment operating profit to consolidated income before provision for income taxes. Additionally, management has determined that it is not practical to allocate identifiable assets by segment since such assets are used interchangeably among the segments. The Company manages its business primarily based on the managerial responsibility for its client base and market. As managerial responsibility for a particular customer relationship generally correlates with the customer’s geographic location, there is a high degree of similarity between customer locations and the geographic boundaries of the Company’s reportable segments. In some cases, managerial responsibility for a particular customer is assigned to a management team in another region and is usually based on the strength of the relationship between customer executives and particular members of EPAM’s senior management team. In such cases, the customer’s activity would be reported through the management team’s reportable segment. On July 26, 2023, the Company completed the sale of its remaining holdings in Russia to a third party. As a result of this sale, the Company no longer has operations associated with this segment. See Note 2 “Impact of the Invasion of Ukraine” for more information. Revenues from external customers and operating profit, before unallocated expenses, by reportable segments were as follows: For the Years Ended December 31, 2023 2022 2021 Segment revenues: North America $ 2,765,022 $ 2,898,554 $ 2,242,248 Europe 1,909,443 1,853,056 1,350,484 Russia 16,075 73,088 165,412 Total revenues $ 4,690,540 $ 4,824,698 $ 3,758,144 Segment operating profit/(loss): North America $ 520,945 $ 589,412 $ 462,798 Europe 250,634 223,276 233,727 Russia (5,866) (13,460) 32,547 Total segment operating profit $ 765,713 $ 799,228 $ 729,072 Intersegment transactions were excluded from the above on the basis that they are neither included in the measure of a segment’s profit and loss results, nor considered by the CODM during the review of segment results. There were no customers individually exceeding 10% of our total segment revenues for the years ended December 31, 2023, 2022 and 2021. Reconciliation of segment operating profit to consolidated income before provision for income taxes is presented below: For the Years Ended December 31, 2023 2022 2021 Total segment operating profit: $ 765,713 $ 799,228 $ 729,072 Unallocated costs: Stock-based compensation expense (147,730) (99,909) (111,655) Amortization of purchased intangibles (22,717) (22,223) (17,646) Other acquisition-related expenses (2,723) (1,537) (6,397) Loss on sale of business (25,922) — — Other unallocated costs (65,382) (102,593) (51,058) Income from operations 501,239 572,966 542,316 Interest and other income/(loss), net 51,124 10,025 (1,727) Foreign exchange loss (15,778) (75,733) (7,197) Income before provision for income taxes $ 536,585 $ 507,258 $ 533,392 Geographic Area Information Long-lived assets include property and equipment, net of accumulated depreciation and amortization, and management has determined that it is not practical to allocate these assets by segment since such assets are used interchangeably among the segments. Physical locations and values of the Company’s long-lived assets are presented below: As of December 31, 2023 As of December 31, 2022 As of December 31, 2021 Ukraine $ 62,653 $ 70,183 $ 78,289 Belarus 49,875 57,311 75,422 United States 42,510 68,804 14,843 Poland 15,057 14,685 8,240 India 12,735 8,506 9,459 Hungary 6,683 8,552 5,339 Russia — — 16,611 Other 45,540 45,307 28,011 Total $ 235,053 $ 273,348 $ 236,214 See Note 2 “Impact of the Invasion of Ukraine” for more information regarding the Company’s decisions to no longer serve customers in Russia, impairment of long-lived assets in Russia and the sale of its holdings in Russia. The table below presents the Company’s revenues by customer location for the years ended December 31, 2023, 2022 and 2021: For the Years Ended December 31, 2023 2022 2021 United States $ 2,633,730 $ 2,761,050 $ 2,125,301 United Kingdom 585,172 619,305 474,941 Switzerland 367,121 323,424 271,208 Netherlands 236,292 215,444 154,816 Germany 178,492 161,758 113,727 Canada 97,983 114,910 96,646 Russia 13,290 64,745 155,186 Other locations 578,460 564,062 366,319 Revenues $ 4,690,540 $ 4,824,698 $ 3,758,144

ACCUMULATED OTHER COMPREHENSIVE

ACCUMULATED OTHER COMPREHENSIVE LOSS	12 Months Ended
	Dec. 31, 2023
Equity [Abstract]
ACCUMULATED OTHER COMPREHENSIVE LOSS	ACCUMULATED OTHER COMPREHENSIVE LOSS The following table summarizes the changes in the accumulated balances for each component of accumulated other comprehensive loss: For the Years Ended December 31, 2023 2022 2021 Foreign currency translation Beginning balance $ (101,780) $ (52,747) $ (28,168) Foreign currency translation 45,035 (45,295) (29,323) Net loss reclassified into Loss on sale of business 23,931 — — Income tax (expense)/benefit (10,787) (3,738) 4,744 Foreign currency translation, net of tax 58,179 (49,033) (24,579) Ending balance $ (43,601) $ (101,780) $ (52,747) Cash flow hedging instruments Beginning balance $ 8,306 $ (3,417) $ 3,642 Unrealized gain/(loss) in fair value 25,352 (49,233) (13,781) Net (gain)/ loss reclassified into Cost of revenues (exclusive of depreciation and amortization) (25,695) 20,331 4,649 Net (gain)/ loss reclassified into Foreign exchange loss (234) 44,067 — Income tax benefit/(expense) 90 (3,442) 2,073 Cash flow hedging instruments, net of tax (487) 11,723 (7,059) Ending balance (1) $ 7,819 $ 8,306 $ (3,417) Defined benefit plans Beginning balance $ (1,847) $ 1,957 $ (986) Actuarial (losses)/gains (1,856) (4,892) 3,805 Income tax benefit/(expense) 445 1,088 (862) Defined benefit plans, net of tax (1,411) (3,804) 2,943 Ending balance $ (3,258) $ (1,847) $ 1,957 Accumulated other comprehensive loss $ (39,040) $ (95,321) $ (54,207) (1) As of December 31, 2023, the ending balance of net unrealized gain related to derivatives designated as cash flow hedges is expected to be reclassified into Cost of revenues (exclusive of depreciation and amortization) in the next twelve months.

VALUATION AND QUALIFYING ACCOUN

VALUATION AND QUALIFYING ACCOUNTS	12 Months Ended
	Dec. 31, 2023
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
VALUATION AND QUALIFYING ACCOUNTS	VALUATION AND QUALIFYING ACCOUNTS FOR THE YEARS ENDED DECEMBER 31, 2023, 2022 AND 2021 (In thousands) Balance at Additions Deductions/ Balance at End of Year Year Ended December 31, 2023 Allowance for doubtful accounts for trade receivables and contract assets $ 15,310 3,948 (7,394) $ 11,864 Valuation allowance on deferred tax assets $ 6,728 2,210 (1,316) $ 7,622 Year Ended December 31, 2022 Allowance for doubtful accounts for trade receivables and contract assets $ 5,521 14,419 (4,630) $ 15,310 Valuation allowance on deferred tax assets $ 4,537 2,191 — $ 6,728 Year Ended December 31, 2021 Allowance for doubtful accounts for trade receivables and contract assets $ 4,886 3,888 (3,253) $ 5,521 Valuation allowance on deferred tax assets $ 5,485 — (948) $ 4,537

ORGANIZATION AND SUMMARY OF S_2

ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2023
Accounting Policies [Abstract]
Nature of Operations	EPAM Systems, Inc. (the “Company” or “EPAM”) is a leading digital transformation services and product engineering company, providing digital platform engineering and software development services to customers across six continents. In a business landscape that is constantly challenged by the pressures of digitization, EPAM focuses on building long-term partnerships with customers in various industries through innovative and scalable software solutions, integrated strategy, experience and technology consulting, and a continually evolving mix of advanced capabilities. The Company is incorporated in Delaware with headquarters in Newtown, Pennsylvania.
Principles of Consolidation	Principles of Consolidation — The consolidated financial statements include the financial statements of EPAM and its subsidiaries. All intercompany balances and transactions have been eliminated.
Use of Estimates	Use of Estimates — The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions. These estimates and assumptions affect reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements, as well as revenues and expenses during the reporting period. The Company bases its estimates and judgments on historical experience, knowledge of current conditions and its beliefs of what could occur in the future, given available information. Actual results could differ from those estimates, and such differences may be material to the financial statements.
Cash and Cash Equivalents	Cash and Cash Equivalents
Trade Receivables and Contract Assets	Trade Receivables and Contract Assets
Property and Equipment	Property and Equipment two
Business Combinations	Business Combinations — The Company accounts for business combinations using the acquisition method which requires it to estimate the fair value of identifiable assets acquired and liabilities assumed, including any contingent consideration, to properly allocate the purchase price to the individual assets acquired and liabilities assumed in accordance with the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 805, Business Combinations . A substantial portion of the purchase price is typically allocated to goodwill and other intangible assets, which usually include customer relationships, software, trade names, and assembled workforce. The allocation of the purchase price utilizes significant estimates in determining the fair values of identifiable assets acquired and liabilities assumed, especially with respect to intangible assets. The significant estimates and assumptions used include the timing and amount of forecasted revenues and cash flows, anticipated growth rates, customer attrition rates, the discount rate reflecting the risk inherent in future cash flows and the useful lives for finite-lived assets. There are different valuation models for each component, the selection of which requires considerable judgment. These determinations will affect the amount of amortization expense recognized in future periods. The Company bases its fair value estimates on assumptions it believes are reasonable but recognizes that the assumptions are inherently uncertain. If the initial accounting for the business combination has not been completed by the end of the reporting period in which the business combination occurs, provisional amounts are reported to present information about facts and circumstances that existed as of the acquisition date. Once the measurement period ends, which in no case extends beyond one year from the acquisition date, revisions to the accounting for the business combination are recorded in earnings. In some business combinations, the Company agrees to contingent consideration arrangements and the Company determines the fair value of contingent consideration using Monte Carlo simulations (which involve a simulation of future revenues and earnings during the earn-out period using management’s best estimates) or probability-weighted expected return methods. Changes in financial projections, market risk assumptions, discount rates or probability assumptions related to achieving the various earn-out criteria would result in a change in the fair value of contingent consideration. Such changes in the fair value of contingent consideration arrangements that are not measurement period adjustments are recorded within Interest and other income/(loss), net in the Company’s consolidated statements of income.
Long-Lived Assets	Long-Lived Assets
Goodwill and Other Indefinite-Lived Intangible Assets	Goodwill and Other Indefinite-Lived Intangible Assets — Goodwill and other intangible assets that have indefinite useful lives are accounted for in accordance with FASB ASC 350, Intangibles — Goodwill and Other . The Company conducts its evaluation of goodwill impairment at the reporting unit level on an annual basis as of October 31st, and more frequently if events or circumstances indicate that the carrying value of a reporting unit exceeds its fair value. A reporting unit is an operating segment or one level below. The Company does not have intangible assets other than goodwill that have indefinite useful lives.
Derivative Financial Instruments	Derivative Financial Instruments — The Company enters into derivative financial instruments to manage exposure to fluctuations in certain foreign currencies. The Company measures these foreign currency derivative contracts at fair value on a recurring basis utilizing Level 2 inputs and recognizes them as either assets or liabilities in its consolidated balance sheets. The Company records changes in the fair value of these hedges in accumulated other comprehensive loss until the forecasted transaction occurs. When the forecasted transaction occurs, the Company reclassifies the related gain or loss on the cash flow hedge to cost of revenues (exclusive of depreciation and amortization). In the event the underlying forecasted transaction does not occur, or it becomes probable that it will not occur, the Company reclassifies the gain or loss on the underlying hedge into income. If the Company does not elect hedge accounting, or the contract does not qualify for hedge accounting treatment, the changes in fair value from period to period are recorded in income. The cash flow impact of derivatives identified as hedging instruments is reflected as cash flows from operating activities. The cash flow impact of derivatives not identified as hedging instruments is reflected as cash flows from investing activities.
Fair Value of Financial Instruments	Fair Value of Financial Instruments — The Company makes assumptions about fair values of its financial assets and liabilities in accordance with FASB ASC Topic 820, Fair Value Measurement , and utilizes the following fair value hierarchy in determining inputs used for valuation: Level 1 — Quoted prices for identical assets or liabilities in active markets. Level 2 — Inputs other than quoted prices within Level 1 that are observable either directly or indirectly, including quoted prices in markets that are not active, quoted prices in active markets for similar assets or liabilities, and observable inputs other than quoted prices such as interest rates or yield curves. Level 3 — Unobservable inputs reflecting management’s view about the assumptions that market participants would use in pricing the asset or liability. Where the fair values of financial assets and liabilities recorded in the consolidated balance sheets cannot be derived from an active market, they are determined using a variety of valuation techniques. These valuation techniques include a net present value technique, comparison to similar instruments with market observable inputs, option pricing models and other relevant valuation models. To the extent possible, observable market data is used as inputs into these models but when it is not feasible, a degree of judgment is required to establish fair values. Changes in the fair value of liabilities could cause a material impact to, and volatility in the Company’s operating results. See Note 5 “Fair Value Measurements.”
Leases	Leases — The Company determines if an arrangement is a lease or contains a lease at inception. The Company performs an assessment and classifies the lease as either an operating lease or a financing lease at the lease commencement date with a right-of-use asset and a lease liability recognized in the consolidated balance sheet under both classifications. The Company does not have finance leases that are material to the Company’s consolidated financial statements. Lease liabilities are initially measured at the present value of lease payments not yet paid. The present value is determined by applying the readily determinable rate implicit in the lease or, if not available, the incremental borrowing rate of the lessee. The Company determines the incremental borrowing rate of the lessee on a lease-by-lease basis by developing an estimated centralized U.S. dollar borrowing rate for a fully collateralized obligation with a term similar to the lease term and adjusts the rate to reflect the incremental risk associated with the foreign currency in which the lease is denominated. The development of this estimate includes the use of recovery rates, U.S. risk-free rates, foreign currency/country base rate yields, and a synthetic corporate credit rating of the Company developed using regression analysis. Lease agreements of the Company may include options to extend or terminate the lease and the Company includes such options in the lease term when it is reasonably certain that the Company will exercise that option. Right-of-use assets are recognized based on the initial measurement of the lease liabilities plus initial direct costs less lease incentives and, according to the guidance for long-lived assets, right-of-use assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Lease expense for operating leases is recognized on a straight-line basis over the lease term.
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss — Accumulated other comprehensive loss consists of changes in the cumulative foreign currency translation adjustments and actuarial gains and losses on defined benefit pension plans. In addition, the Company enters into foreign currency exchange contracts, which are designated as cash flow hedges in accordance with FASB ASC Topic 815, Derivatives and Hedging.
Revenue Recognition	Revenue Recognition — The Company recognizes revenues when control of goods or services is passed to a customer in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods or services. Such control may be transferred over time or at a point in time depending on satisfaction of obligations stipulated by the contract. Consideration expected to be received may consist of both fixed and variable components and is allocated to each separately identifiable performance obligation based on the performance obligation’s relative standalone selling price. Variable consideration usually takes the form of volume-based discounts, service level credits, price concessions or incentives. Determining the estimated amount of such variable consideration involves assumptions and judgment that can have an impact on the amount of revenues reported. The Company derives revenues from a variety of service arrangements, which have been evolving to provide more customized and integrated solutions to customers by combining software engineering with customer experience design, business consulting and technology innovation services. Fees for these contracts may be in the form of time-and-materials or fixed-price arrangements. The Company generates the majority of its revenues under time-and-material contracts, which are billed using hourly, daily or monthly rates to determine the amounts to be charged directly to the customer. The Company applies a practical expedient and revenues related to time-and-material contracts are recognized based on the right to invoice for services performed. Fixed-price contracts include maintenance and support arrangements which may exceed one year in duration. Maintenance and support arrangements generally relate to the provision of ongoing services and revenues for such contracts are recognized ratably over the expected service period. Fixed-price contracts also include application development arrangements, where progress towards satisfaction of the performance obligation is measured using input or output methods and input methods are used only when there is a direct correlation between hours incurred and the end product delivered. Assumptions, risks and uncertainties inherent in the estimates used to measure progress could affect the amount of revenues, receivables and deferred revenues at each reporting period. Revenues from licenses which have significant stand-alone functionality are recognized at a point in time when control of the license is transferred to the customer. Revenues from licenses which do not have stand-alone functionality are recognized over time. If there is an uncertainty about the receipt of payment for the services, revenue recognition is deferred until the uncertainty is sufficiently resolved. The Company applies a practical expedient and does not assess the existence of a significant financing component if the period between transfer of the service to a customer and when the customer pays for that service is one year or less. The Company reports gross reimbursable “out-of-pocket” expenses incurred as both revenues and cost of revenues in the consolidated statements of income and comprehensive income.
Cost of Revenues (Exclusive of Depreciation and Amortization)	Cost of Revenues (Exclusive of Depreciation and Amortization)
Selling, General and Administrative Expenses	Selling, General and Administrative Expenses — Consists of expenses associated with promoting and selling the Company’s services and general and administrative functions of the business. These expenses include the costs of salaries, bonuses, fringe benefits, stock-based compensation, severance, bad debt, travel, legal and accounting services, insurance, facilities including operating leases, advertising and other promotional activities, and certain non-income taxes.
Stock-based Compensation	Stock-Based Compensation — The Company recognizes the cost of its equity settled stock-based incentive awards based on the fair value of the award at the date of grant, net of estimated forfeitures. The fair value of these awards at the date of grant is generally based on the grant-date price of the company's shares. The grant date fair value for stock options and stock purchase rights under the Employee Stock Purchase Plan (”ESPP”) is estimated using the Black-Scholes option-pricing valuation model. The cost is generally expensed evenly over the service period, unless otherwise specified by the award agreement. The service period is the period over which the employee performs the related services, which is normally the same as the vesting period. Equity-based awards that do not require future service are expensed immediately. For awards with performance conditions, the amount of compensation cost we recognize over the requisite service period is based on the actual or expected achievement of the performance condition. Quarterly, the forfeiture assumption is adjusted to reflect actual forfeitures and such adjustment may affect the timing of recognition of the total amount of expense recognized over the vesting period. Stock-based awards that do not meet the criteria for equity classification are recorded as liabilities and adjusted to fair value at the end of each reporting period.
Income Taxes	Income Taxes — The provision for income taxes includes federal, state, local and foreign taxes. Deferred tax assets and liabilities are recognized for the estimated future tax consequences of temporary differences between the financial statement carrying amounts and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the year in which the temporary differences are expected to be reversed. Changes to enacted tax rates would result in either increases or decreases in the provision for income taxes in the period of changes. The realizability of deferred tax assets is primarily dependent on future earnings. The Company evaluates the realizability of deferred tax assets and recognizes a valuation allowance when it is more likely than not that all, or a portion of, deferred tax assets will not be realized. A reduction in estimated forecasted results may require that we record valuation allowances against deferred tax assets. Once a valuation allowance has been established, it will be maintained until there is sufficient positive evidence to conclude that it is more likely than not that the deferred tax assets will be realized. A pattern of sustained profitability will generally be considered as sufficient positive evidence to reverse a valuation allowance. If the allowance is reversed in a future period, the income tax provision will be correspondingly reduced. Accordingly, the increase and decrease of valuation allowances could have a significant negative or positive impact on future earnings.
Earnings Per Share ("EPS")	Earnings per Share (“EPS”)
Foreign Currency Translation and Remeasurement	Foreign Currency Translation and Remeasurement — Assets and liabilities of consolidated foreign subsidiaries whose functional currency is not the U.S. dollar are translated into U.S. dollars at period-end exchange rates and revenues and expenses are translated into U.S. dollars at daily exchange rates. The adjustment resulting from translating the financial statements of such foreign subsidiaries into U.S. dollars is reflected as a cumulative translation adjustment and reported as a component of Accumulated other comprehensive loss. For consolidated foreign subsidiaries whose functional currency is not the local currency, transactions and balances denominated in the local currency are foreign currency transactions. Foreign currency transactions and balances related to non-monetary assets and liabilities are remeasured to the functional currency of the subsidiary at historical exchange rates while monetary assets and liabilities are remeasured to the functional currency of the subsidiary at period-end exchange rates. Foreign currency exchange gains or losses from remeasurement are included in income in the period in which they occur.
Risks and Uncertainties	Risks and Uncertainties — As a result of its global operations, the Company may be subject to certain inherent risks. Concentration of Credit — Financial instruments that potentially subject the Company to concentration of credit risk consist primarily of cash, cash equivalents, short-term investments and trade receivables. The Company maintains cash, cash equivalents and short-term investments with financial institutions. The Company believes its credit policies reflect normal industry terms and business risk and there is no expectation of non-performance by the counterparties. The Company has cash in several countries, including Ukraine and Belarus, where the banking sector remains subject to periodic instability; banking and other financial systems generally do not meet the banking standards of more developed markets; and bank deposits made by corporate entities are not insured. As of December 31, 2023, the Company had $45.8 million of cash and cash equivalents in banks in Ukraine and $38.3 million of cash and cash equivalents in banks in Belarus. Cash in Ukraine and Belarus is used for the operational needs of the local entities and cash balances change with the expected operating needs of these entities. The Company regularly monitors cash held in these countries and, to the extent the cash held exceeds amounts required to support its operations in these countries, the Company distributes the excess funds into markets with more developed banking sectors to the extent it is possible to do so. The Company places its cash and cash equivalents with financial institutions considered stable in the region, limits the amount of credit exposure with any one financial institution and conducts ongoing evaluations of the credit worthiness of the financial institutions with which it does business. However, a banking crisis, bankruptcy or insolvency of banks that process or hold the Company’s funds, or sanctions may result in the loss of deposits or adversely affect the Company’s ability to complete banking transactions, which could adversely affect the Company’s business and financial condition. Trade receivables are generally dispersed across many customers operating in different industries; therefore, concentration of credit risk is limited. Historically, credit losses and write-offs of trade receivables have not been material to the consolidated financial statements. If any of the Company’s customers enter bankruptcy protection or otherwise take steps to alleviate their financial distress, the Company’s credit losses and write-offs of trade receivables could increase, which would negatively impact its results of operations. Foreign currency risk — The Company’s global operations are conducted predominantly in U.S. dollars. Other than U.S. dollars, the Company generates revenues in various currencies, principally, euros, British pounds, Swiss francs and Canadian dollars and incurs expenditures principally in euros, Polish zlotys, Indian rupees, British pounds, Swiss francs, Hungarian forints, Mexican pesos, Colombian pesos, Canadian dollars and Chinese yuan renminbi. The Company’s international operations expose it to risk of adverse fluctuations in foreign currency exchange rates through the remeasurement of foreign currency denominated assets and liabilities (both third-party and intercompany) and translation of earnings and cash flows into U.S. dollars. The Company has a hedging program whereby it enters into a series of foreign exchange forward contracts with durations of twelve months or less that are designated as cash flow hedges of forecasted Polish zloty, Indian rupee and Hungarian forint transactions. See Note 6 “Derivative Financial Instruments ” for further information on the Company’s hedging program. Interest rate risk
Adoption of New Accounting Standards and Pending Accounting Standards	Adoption of New Accounting Standards There were no recently adopted accounting standards which had a material impact on the Company’s consolidated financial statements. Pending Accounting Standards From time to time, new accounting pronouncements are issued by the FASB or other standards-setting bodies that the Company will adopt according to the various timetables the FASB specifies. Unless otherwise discussed below, the Company believes the impact of recently issued standards that are not yet effective will not have a material impact on its consolidated financial statements upon adoption. Segment Reporting - Improvements to Reportable Segment Disclosures — In November 2023, the FASB issued Accounting Standard Update (“ASU”) No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. The update is intended to improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. The update is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted and requires retrospective application to all prior periods presented in the financial statements. The Company is currently assessing the impact that adopting this ASU will have on its consolidated financial statements and expects to adopt this ASU in the fourth quarter of 2024. Income Taxes - Improvements to Income Tax Disclosures — In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures , which requires disclosure of disaggregated income taxes paid, prescribes standard categories for the components of the effective tax rate reconciliation, and modifies other income tax-related disclosures. The new guidance is effective for annual periods beginning after December 15, 2024, with early adoption permitted and may be applied prospectively or retrospectively. The Company is currently assessing the timing and impact of adopting this ASU.
Non-Marketable Securities Without Readily Determinable Fair Values	Non-Marketable Securities Without Readily Determinable Fair Values

ACQUISITIONS (Tables)

ACQUISITIONS (Tables)	12 Months Ended
	Dec. 31, 2023
Business Combination and Asset Acquisition [Abstract]
Schedule of Fair Values of Assets Acquired and Liabilities Assumed	The following table summarizes the estimated fair values of the assets acquired and liabilities assumed as of the date of each respective acquisition and updated for any changes as of December 31, 2022: PolSource CORE Emakina Cash and cash equivalents $ 2,565 $ 11,283 $ 5,142 Trade receivables and contract assets 12,734 10,266 34,389 Prepaid and other current assets 814 5,430 3,109 Goodwill 125,265 24,194 139,417 Intangible assets 15,790 8,368 30,488 Property and equipment and other noncurrent assets 461 4,585 16,802 Total assets acquired $ 157,629 $ 64,126 $ 229,347 Accounts payable, accrued expenses and other current liabilities $ 5,337 $ 9,336 $ 37,469 Short-term debt — — 13,657 Long-term debt — — 8,874 Operating lease liabilities, noncurrent 157 2,056 5,541 Other noncurrent liabilities 3,963 2,525 9,319 Total liabilities assumed $ 9,457 $ 13,917 $ 74,860 Noncontrolling interest in consolidated subsidiaries — — 10,469 Net assets acquired $ 148,172 $ 50,209 $ 144,018
Schedule of Acquired Finite-Lived Intangible Assets by Major Class	The following table presents the estimated fair values and useful lives of intangible assets acquired from PolSource, CORE and Emakina as of the date of each respective acquisition and updated for any changes as of December 31, 2022: PolSource CORE Emakina Weighted Average Useful Life (in years) Amount Weighted Average Useful Life (in years) Amount Weighted Average Useful Life (in years) Amount Customer relationships 6 $ 14,790 6 $ 7,779 7 $ 27,822 Trade names 3 1,000 5 589 3 2,666 Total $ 15,790 $ 8,368 $ 30,488

GOODWILL AND INTANGIBLE ASSET_2

GOODWILL AND INTANGIBLE ASSETS, NET (Tables)	12 Months Ended
	Dec. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill by Reportable Segment	Goodwill by reportable segment was as follows: North America Europe Russia Total Balance as of January 1, 2022 $ 217,594 $ 312,413 $ 716 $ 530,723 2022 Acquisitions — 10,124 — 10,124 Emakina acquisition purchase accounting adjustments — 2,602 — 2,602 PolSource acquisition purchase accounting adjustments (44) (30) — (74) CORE acquisition purchase accounting adjustments — 959 — 959 Other 2021 Acquisitions purchase accounting adjustments (20) 937 — 917 Goodwill impairment — — (686) (686) Effect of net foreign currency exchange rate changes (570) (14,893) (30) (15,493) Balance as of December 31, 2022 $ 216,960 $ 312,112 $ — $ 529,072 2023 Acquisitions 24,477 — — 24,477 2022 Acquisitions purchase accounting adjustments — 87 — 87 Effect of net foreign currency exchange rate changes 423 8,400 — 8,823 Balance as of December 31, 2023 $ 241,860 $ 320,599 $ — $ 562,459
Schedule of Components of Intangible Assets	Intangible assets other than goodwill as of December 31, 2023 and 2022 were as follows: As of December 31, 2023 Weighted average life at acquisition (in years) Gross carrying amount Accumulated amortization Net Customer relationships 8 $ 171,735 $ (103,651) $ 68,084 Trade names 4 10,798 (9,588) 1,210 Software 6 6,134 (4,825) 1,309 Contract royalties 8 1,900 (1,385) 515 Total $ 190,567 $ (119,449) $ 71,118 As of December 31, 2022 Weighted average life at acquisition (in years) Gross carrying amount Accumulated amortization Net Customer relationships 8 $ 154,407 $ (82,505) $ 71,902 Trade names 4 10,520 (7,900) 2,620 Software 6 6,022 (3,644) 2,378 Contract royalties 8 1,900 (1,148) 752 Total $ 172,849 $ (95,197) $ 77,652
Schedule of Intangible Assets Amortization Expense Recognized	The following table presents amortization expense recognized for the periods indicated: For the Years Ended December 31, 2023 2022 2021 Customer relationships $ 19,855 $ 18,946 $ 15,399 Trade names 1,522 1,909 842 Software 1,102 1,086 1,114 Contract royalties 238 238 238 Assembled workforce — 44 53 Total $ 22,717 $ 22,223 $ 17,646
Schedule of Estimated Amortization Expense	Based on the carrying value of the Company’s existing intangible assets as of December 31, 2023, the estimated amortization expense for the future years is as follows: Year ending December 31, Amount 2024 $ 22,080 2025 18,264 2026 14,133 2027 9,870 2028 2,999 Thereafter 3,772 Total $ 71,118

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	12 Months Ended
	Dec. 31, 2023
Fair Value Disclosures [Abstract]
Schedule of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis	The following table shows the fair values of the Company’s financial assets and liabilities measured at fair value on a recurring basis as of December 31, 2023: As of December 31, 2023 Balance Level 1 Level 2 Level 3 Foreign exchange derivative assets $ 10,416 $ — $ 10,416 $ — Total assets measured at fair value on a recurring basis $ 10,416 $ — $ 10,416 $ — Foreign exchange derivative liabilities $ 248 $ — $ 248 $ — Contingent consideration 23,150 — — 23,150 Total liabilities measured at fair value on a recurring basis $ 23,398 $ — $ 248 $ 23,150 The following table shows the fair values of the Company’s financial assets and liabilities measured at fair value on a recurring basis as of December 31, 2022. As of December 31, 2022 Balance Level 1 Level 2 Level 3 Foreign exchange derivative assets $ 12,191 $ — $ 12,191 $ — Rights to acquire noncontrolling interest in consolidated subsidiaries 334 — — 334 Total assets measured at fair value on a recurring basis $ 12,525 $ — $ 12,191 $ 334 Foreign exchange derivative liabilities $ 9,350 $ — $ 9,350 $ — Contingent consideration 24,308 — — 24,308 Total liabilities measured at fair value on a recurring basis $ 33,658 $ — $ 9,350 $ 24,308
Schedule of Acquisition-Related Contingent Consideration Roll Forward	A reconciliation of the beginning and ending balances of Level 3 contingent consideration liabilities using significant unobservable inputs for the years ended December 31, 2021, December 31, 2022, and December 31, 2023 are as follows: Amount Contingent consideration liabilities as of January 1, 2021 $ 7,470 Acquisition date fair value of contingent consideration — PolSource acquisition 35,400 Acquisition date fair value of contingent consideration — CORE acquisition 4,007 Acquisition date fair value of contingent consideration — Emakina acquisition 213 Acquisition date fair value of contingent consideration — Other 2021 Acquisitions 17,629 Changes in fair value of contingent consideration included in Interest and other income/(loss), net 8,782 Payment of contingent consideration for previously acquired businesses (50,000) Effect of net foreign currency exchange rate changes (387) Contingent consideration liabilities as of December 31, 2021 $ 23,114 Acquisition date fair value of contingent consideration — 2022 Acquisitions 2,645 Changes in fair value of contingent consideration included in Interest and other income/(loss), net 11,101 Payment of contingent consideration for previously acquired businesses (11,328) Effect of net foreign currency exchange rate changes (1,224) Contingent consideration liabilities as of December 31, 2022 $ 24,308 Acquisition date fair value of contingent consideration — 2023 Acquisitions 14,850 Changes in fair value of contingent consideration included in Interest and other income/(loss), net 2,814 Payment of contingent consideration for previously acquired businesses (18,844) Effect of net foreign currency exchange rate changes 22 Contingent consideration liabilities as of December 31, 2023 $ 23,150
Schedule of Estimated Fair Values of Financial Assets and Liabilities Not Measured at Fair Value on a Recurring Basis	The following tables present the estimated fair values of the Company’s financial assets and liabilities not measured at fair value on a recurring basis as of the dates indicated: Fair Value Hierarchy Balance Estimated Fair Value Level 1 Level 2 Level 3 December 31, 2023 Financial Assets: Cash equivalents: Money market funds $ 168,120 $ 168,120 $ 168,120 $ — $ — Time deposits $ 105,210 $ 105,210 $ — $ 105,210 $ — Total cash equivalents $ 273,330 $ 273,330 $ 168,120 $ 105,210 $ — Time deposits included in Short-term investments $ 60,739 $ 60,739 $ — $ 60,739 $ — Financial Liabilities: Borrowings under 2021 Credit Agreement $ 25,000 $ 25,000 $ — $ 25,000 $ — Deferred consideration for asset acquisition $ 46,954 $ 46,954 $ — $ 46,954 $ — Fair Value Hierarchy Balance Estimated Fair Value Level 1 Level 2 Level 3 December 31, 2022 Financial Assets: Cash equivalents: Money market funds $ 312,321 $ 312,321 $ 312,321 $ — $ — Total cash equivalents $ 312,321 $ 312,321 $ 312,321 $ — $ — Time deposits included in Short-term investments $ 60,336 $ 60,336 $ — $ 60,336 $ — Financial Liabilities: Short-term debt $ 2,861 $ 2,861 $ — $ 2,861 $ — Borrowings under 2021 Credit Agreement $ 25,000 $ 25,000 $ — $ 25,000 $ — Other long-term debt $ 2,693 $ 2,693 $ — $ 2,693 $ — Deferred consideration for asset acquisition $ 53,636 $ 53,636 $ — $ 53,636 $ —

DERIVATIVE FINANCIAL INSTRUME_2

DERIVATIVE FINANCIAL INSTRUMENTS (Tables)	12 Months Ended
	Dec. 31, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Fair Value of Derivative Instruments	The fair value of foreign currency derivative instruments on the Company’s consolidated balance sheets as of December 31, 2023 and December 31, 2022 were as follows: As of December 31, 2023 As of December 31, 2022 Balance Sheet Classification Asset Derivatives Liability Derivatives Asset Derivatives Liability Derivatives Foreign exchange forward contracts - Prepaid expenses and other current assets $ 10,416 $ 12,191 Accrued expenses and other current liabilities $ 248 $ 1,445 Foreign exchange forward contracts - Accrued expenses and other current liabilities $ — $ 7,905

PROPERTY AND EQUIPMENT, NET (Ta

PROPERTY AND EQUIPMENT, NET (Tables)	12 Months Ended
	Dec. 31, 2023
Property, Plant and Equipment [Abstract]
Schedule of Components of Property and Equipment, Net	Property and equipment, net consisted of the following: Weighted Average Useful Life As of December 31, 2023 As of December 31, 2022 Computer hardware 4 $ 155,991 $ 157,283 Purchased computer software 5 88,644 99,414 Buildings 45 54,899 54,627 Leasehold improvements 7 37,189 32,949 Furniture, fixture and other equipment 7 22,583 22,153 Office equipment 7 18,315 19,039 Land improvements 18 2,142 2,137 Land n/a 1,339 1,339 Construction in progress n/a 51,477 51,502 432,579 440,443 Less: accumulated depreciation and amortization (197,526) (167,095) Total $ 235,053 $ 273,348

ACCRUED EXPENSES AND OTHER CU_2

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Tables)	12 Months Ended
	Dec. 31, 2023
Payables and Accruals [Abstract]
Schedule of Components of Accrued Expenses and Other Current Liabilities	Accrued expenses and other current liabilities consisted of the following: As of December 31, 2023 As of December 31, 2022 Value added taxes payable $ 39,852 $ 47,433 Deferred revenue 27,988 36,036 Contingent consideration, current (Note 5) 9,650 18,008 Other current liabilities and accrued expenses 47,333 52,862 Total $ 124,823 $ 154,339

LEASES (Tables)

LEASES (Tables)	12 Months Ended
	Dec. 31, 2023
Leases [Abstract]
Schedule of Components of Lease Expenses	During the years ended December 31, 2023, 2022 and 2021, the components of lease expense were as follows: Income Statement Classification Year Ended December 31, 2023 Year Ended December 31, 2022 Year Ended December 31, 2021 Operating lease cost Selling, general and administrative expenses $ 47,824 $ 51,775 $ 67,144 Variable lease cost Selling, general and administrative expenses 13,156 10,372 8,555 Short-term lease cost Selling, general and administrative expenses 5,602 5,289 2,248 Total lease cost $ 66,582 $ 67,436 $ 77,947
Schedule of Supplemental Cash Flow Information	Supplemental cash flow information related to leases for the years ended December 31, 2023 and 2022 were as follows: Year Ended December 31, 2023 Year Ended December 31, 2022 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows used for operating leases $ 52,373 $ 54,344 Right-of-use assets obtained in exchange for lease obligations: Operating leases $ 18,063 $ 35,048 Non-cash net increase/ (decrease) due to lease modifications: Operating lease right-of-use assets $ 7,595 $ (2,934) Operating lease liabilities $ 9,198 $ (4,254)
Schedule of Weighted Average Lease Term and Discount Rates	Weighted average remaining lease terms and discount rates as of December 31, 2023 and 2022, were as follows: As of December 31, 2023 As of December 31, 2022 Weighted average remaining lease term, in years: Operating leases 5.0 5.4 Weighted average discount rate: Operating leases 4.1 % 2.8 %
Schedule of Maturity of Operating Lease Liabilities	As of December 31, 2023, operating lease liabilities will mature as follows: Year ending December 31, Lease Payments 2024 $ 41,495 2025 34,529 2026 28,579 2027 19,173 2028 16,477 Thereafter 19,732 Total lease payments 159,985 Less: imputed interest (14,166) Total $ 145,819

DEBT (Tables)

DEBT (Tables)	12 Months Ended
	Dec. 31, 2023
Debt Disclosure [Abstract]
Schedule of Outstanding Debt and Borrowing Capacity	The following table presents the outstanding debt and borrowing capacity of the Company under the 2021 Credit Agreement as of December 31, 2023 and 2022: As of December 31, 2023 As of December 31, 2022 Outstanding debt $ 25,000 $ 25,000 Interest rate 6.3 % 5.2 % Available borrowing capacity $ 675,000 $ 675,000 Maximum borrowing capacity $ 700,000 $ 700,000

PENSION AND POSTRETIREMENT BE_2

PENSION AND POSTRETIREMENT BENEFITS (Tables)	12 Months Ended
	Dec. 31, 2023
Retirement Benefits [Abstract]
Schedule of Defined Benefit Pension Plans	As of December 31, 2023 and 2022, the amounts recognized in the Company's consolidated balance sheets for the Company's defined benefit pension plans, all of which were underfunded, were as follows: As of As of Liabilities recognized: Accrued compensation and benefits expenses $ 998 $ 832 Other noncurrent liabilities 14,912 9,793 Unfunded status $ 15,910 $ 10,625

COST OPTIMIZATION PROGRAM (Tabl

COST OPTIMIZATION PROGRAM (Tables)	12 Months Ended
	Dec. 31, 2023
Restructuring and Related Activities [Abstract]
Schedule of Restructuring and Related Costs	Activity in the Company’s restructuring reserves was as follows: Balance at December 31, 2022 Charges Payments Made Balance at December 31. 2023 2023 Cost Optimization Program Employee separation costs $ — $ 28,990 $ (22,024) $ 6,966 Total $ — $ 28,990 $ (22,024) $ 6,966

REVENUES (Tables)

REVENUES (Tables)	12 Months Ended
	Dec. 31, 2023
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregation of Revenues	The following tables present the disaggregation of the Company’s revenues by major customer location, including a reconciliation of the disaggregated revenues with the Company’s reportable segments (Note 18 “Segment Information”) for the years ended December 31, 2023, 2022 and 2021: Year Ended December 31, 2023 Reportable Segments North America Europe Russia Consolidated Revenues Customer Locations Americas $ 2,645,174 $ 96,857 $ 631 $ 2,742,662 EMEA 116,054 1,706,728 — 1,822,782 APAC 3,248 98,890 — 102,138 CEE 546 6,968 15,444 22,958 Revenues $ 2,765,022 $ 1,909,443 $ 16,075 $ 4,690,540 Year Ended December 31, 2022 Reportable Segments North America Europe Russia Consolidated Revenues Customer Locations Americas $ 2,792,156 $ 92,244 $ 2,804 $ 2,887,204 EMEA 95,706 1,642,114 99 1,737,919 APAC 3,837 116,533 — 120,370 CEE 6,855 2,165 70,185 79,205 Revenues $ 2,898,554 $ 1,853,056 $ 73,088 $ 4,824,698 Year Ended December 31, 2021 Reportable Segments North America Europe Russia Consolidated Revenues Customer Locations Americas $ 2,145,163 $ 77,351 $ 4,316 $ 2,226,830 EMEA 87,121 1,172,267 329 1,259,717 APAC 3,224 100,335 — 103,559 CEE 6,740 531 160,767 168,038 Revenues $ 2,242,248 $ 1,350,484 $ 165,412 $ 3,758,144 The following tables present the disaggregation of the Company’s revenues by industry vertical, including a reconciliation of the disaggregated revenues with the Company’s reportable segments (Note 18 “Segment Information”) for the years ended December 31, 2023, 2022 and 2021: Year Ended December 31, 2023 Reportable Segments North America Europe Russia Consolidated Revenues Industry Verticals Travel & Consumer $ 472,350 $ 596,830 $ 3,770 $ 1,072,950 Financial Services 538,837 472,146 7,450 1,018,433 Business Information & Media 429,800 323,985 196 753,981 Software & Hi-Tech 552,492 153,683 1,545 707,720 Life Sciences & Healthcare 429,245 60,549 120 489,914 Emerging Verticals 342,298 302,250 2,994 647,542 Revenues $ 2,765,022 $ 1,909,443 $ 16,075 $ 4,690,540 Year Ended December 31, 2022 Reportable Segments North America Europe Russia Consolidated Revenues Industry Verticals Travel & Consumer $ 505,227 $ 571,437 $ 15,560 $ 1,092,224 Financial Services 522,970 460,858 42,858 1,026,686 Business Information & Media 467,664 341,344 944 809,952 Software & Hi-Tech 655,122 136,273 1,866 793,261 Life Sciences & Healthcare 454,102 52,465 800 507,367 Emerging Verticals 293,469 290,679 11,060 595,208 Revenues $ 2,898,554 $ 1,853,056 $ 73,088 $ 4,824,698 Year Ended December 31, 2021 Reportable Segments North America Europe Russia Consolidated Revenues Industry Verticals Travel & Consumer $ 359,306 $ 354,041 $ 27,781 $ 741,128 Financial Services 361,611 372,394 114,365 848,370 Business Information & Media 389,613 275,502 1,826 666,941 Software & Hi-Tech 559,707 102,270 2,620 664,597 Life Sciences & Healthcare 340,706 49,900 703 391,309 Emerging Verticals 231,305 196,377 18,117 445,799 Revenues $ 2,242,248 $ 1,350,484 $ 165,412 $ 3,758,144 The following tables present the disaggregation of the Company’s revenues by contract type, including a reconciliation of the disaggregated revenues with the Company’s reportable segments (Note 18 “Segment Information”) for the years ended December 31, 2023, 2022 and 2021: Year Ended December 31, 2023 Reportable Segments North America Europe Russia Consolidated Revenues Contract Types Time-and-material $ 2,457,545 $ 1,613,790 $ 11,168 $ 4,082,503 Fixed-price 283,183 291,174 4,873 579,230 Licensing and other revenues 24,294 4,479 34 28,807 Revenues $ 2,765,022 $ 1,909,443 $ 16,075 $ 4,690,540 Year Ended December 31, 2022 Reportable Segments North America Europe Russia Consolidated Revenues Contract Types Time-and-material $ 2,615,213 $ 1,578,786 $ 45,581 $ 4,239,580 Fixed-price 263,603 269,669 27,195 560,467 Licensing and other revenues 19,738 4,601 312 24,651 Revenues $ 2,898,554 $ 1,853,056 $ 73,088 $ 4,824,698 Year Ended December 31, 2021 Reportable Segments North America Europe Russia Consolidated Revenues Contract Types Time-and-material $ 1,981,696 $ 1,145,606 $ 82,445 $ 3,209,747 Fixed-price 244,249 202,436 82,711 529,396 Licensing and other revenues 16,303 2,442 256 19,001 Revenues $ 2,242,248 $ 1,350,484 $ 165,412 $ 3,758,144 Timing of Revenue Recognition The following tables present the revenues disaggregated by timing of revenue recognition and reconciled with the Company’s reportable segments (Note 18 “Segment Information”) for the years ended December 31, 2023, 2022 and 2021: Year Ended December 31, 2023 Reportable Segments North America Europe Russia Consolidated Revenues Timing of Revenue Recognition Transferred over time $ 2,751,937 $ 1,907,010 $ 16,042 $ 4,674,989 Transferred at a point of time 13,085 2,433 33 15,551 Revenues $ 2,765,022 $ 1,909,443 $ 16,075 $ 4,690,540 Year Ended December 31, 2022 Reportable Segments North America Europe Russia Consolidated Revenues Timing of Revenue Recognition Transferred over time $ 2,888,342 $ 1,849,011 $ 72,795 $ 4,810,148 Transferred at a point of time 10,212 4,045 293 14,550 Revenues $ 2,898,554 $ 1,853,056 $ 73,088 $ 4,824,698 Year Ended December 31, 2021 Reportable Segments North America Europe Russia Consolidated Revenues Timing of Revenue Recognition Transferred over time $ 2,232,308 $ 1,349,956 $ 165,301 $ 3,747,565 Transferred at a point of time 9,940 528 111 10,579 Revenues $ 2,242,248 $ 1,350,484 $ 165,412 $ 3,758,144
Schedule of Revenue Expected to be Recognized in Future Related to Remaining Performance Obligations	The following table includes the estimated revenues expected to be recognized in the future related to performance obligations that are partially or fully unsatisfied as of December 31, 2023. The Company applies a practical expedient and does not disclose the value of unsatisfied performance obligations for contracts that (i) have an original expected duration of one year or less and (ii) contracts for which it recognizes revenues at the amount to which it has the right to invoice for services provided: Less than 1 year 1 Year 2 Years 3 Years Total Contract Type Fixed-price $ 6,678 $ 810 $ 203 $ — $ 7,691
Schedule of Contract Balances	The following table provides information on the classification of contract assets and liabilities in the consolidated balance sheets: As of December 31, 2023 As of December 31, 2022 Contract assets included in Trade receivables and contract assets $ 24,309 $ 11,490 Contract liabilities included in Accrued expenses and other current liabilities $ 27,988 $ 36,036 Contract liabilities included in Other noncurrent liabilities $ 951 $ 42

STOCKHOLDERS_ EQUITY (Tables)

STOCKHOLDERS’ EQUITY (Tables)	12 Months Ended
	Dec. 31, 2023
Share-Based Payment Arrangement [Abstract]
Schedule of Components of Stock-Based Compensation Expenses	The following costs related to the Company’s stock compensation plans were included in the consolidated statements of income: For the Years Ended December 31, 2023 2022 2021 Cost of revenues (exclusive of depreciation and amortization) $ 68,797 $ 47,470 $ 51,580 Selling, general and administrative expenses 78,933 52,439 60,075 Total $ 147,730 $ 99,909 $ 111,655
Schedule of Stock Option Activity	Stock option activity under the Company’s long-term incentive plans is set forth below: Number of Weighted Average Aggregate Weighted Average Options outstanding as of January 1, 2021 2,772 $ 61.71 $ 822,152 Options granted 94 $ 410.03 Options exercised (536) $ 49.13 Options forfeited (12) $ 248.74 Options outstanding as of December 31, 2021 2,318 $ 77.79 $ 1,369,132 Options granted 133 $ 277.85 Options exercised (514) $ 44.02 Options forfeited (11) $ 350.19 Options expired (3) $ 128.11 Options outstanding as of December 31, 2022 1,923 $ 98.92 $ 447,503 Options granted 114 $ 295.73 Options exercised (397) $ 39.01 Options forfeited (6) $ 316.91 Options expired (5) $ 340.13 Options outstanding as of December 31, 2023 1,629 $ 125.88 $ 289,552 3.4 Options vested and exercisable as of December 31, 2023 1,348 $ 91.33 $ 282,764 2.4 Options expected to vest as of December 31, 2023 268 $ 291.21 $ 6,609 8.3
Schedule of Black-Scholes Option Valuation Model Assumptions	The fair value of each option award is estimated on the date of grant using the Black-Scholes option valuation model. The model incorporated the following weighted average assumptions: For the Years Ended December 31, 2023 2022 2021 Expected volatility 50.2 % 46.7 % 35.3 % Expected term (in years) 6.23 6.24 6.24 Risk-free interest rate 3.6 % 2.6 % 1.2 % Expected dividends — % — % — %
Schedule of Service-Based Awards Activity	The table below summarizes activity related to the Company’s equity-classified and liability-classified service-based awards for the years ended December 31, 2023, 2022 and 2021: Equity-Classified Equity-Classified Equity-Settled Restricted Stock Units Liability-Classified Cash-Settled Restricted Stock Units Number of Shares Weighted Average Grant Date Number of Shares Weighted Average Grant Date Number of Shares Weighted Average Grant Date Unvested service-based awards outstanding as of January 1, 2021 9 $ 167.18 686 $ 162.15 175 $ 141.16 Awards granted — $ — 238 $ 429.41 27 $ 394.24 Awards modified — $ — — $ — — $ — Awards vested — $ — (308) $ 139.83 (86) $ 118.05 Awards forfeited — $ — (40) $ 264.48 (4) $ 210.26 Unvested service-based awards outstanding as of December 31, 2021 9 $ 167.18 576 $ 277.38 112 $ 217.28 Awards granted — $ — 655 $ 287.13 51 $ 269.60 Awards modified — $ — (3) $ 387.74 3 $ 220.00 Awards vested (9) $ 167.18 (244) $ 235.96 (56) $ 184.96 Awards forfeited — $ — (68) $ 328.81 (11) $ 260.59 Unvested service-based awards outstanding as of December 31, 2022 — $ — 916 $ 291.19 99 $ 257.74 Awards granted — $ — 607 $ 288.49 36 $ 298.81 Awards modified — $ — (15) $ 278.52 15 $ 305.59 Awards vested — $ — (329) $ 278.25 (46) $ 242.07 Awards forfeited — $ — (105) $ 304.91 (6) $ 254.82 Unvested service-based awards outstanding as of December 31, 2023 — $ — 1,074 $ 292.45 98 $ 287.36
Schedule of Fair Value of Service-Based Awards Vested	The fair value of vested service-based awards (measured at the vesting date) for the years ended December 31, 2023, 2022 and 2021 was as follows: For the Years Ended December 31, 2023 2022 2021 Equity-classified equity-settled Restricted stock $ — $ 3,990 $ — Restricted stock units 94,418 69,510 129,527 Liability-classified cash-settled Restricted stock units 13,229 16,238 33,947 Total fair value of vested service-based awards $ 107,647 $ 89,738 $ 163,474
Schedule of Performance-Based Awards Activity	The table below summarizes activity related to the Company’s performance-based awards for the years ended December 31, 2023, 2022 and 2021: Equity-Classified Equity-Classified Number of Shares Weighted Average Grant Date Number of Shares Weighted Average Grant Date Unvested performance-based awards outstanding as of January 1, 2021 9 $ 165.87 21 $ 227.16 Awards granted — $ — 8 $ 574.98 Awards vested — $ — (4) $ 177.81 Awards forfeited — $ — (2) $ 334.78 Unvested performance-based awards outstanding as of December 31, 2021 9 $ 165.87 23 $ 339.69 Awards granted — $ — 6 $ 418.26 Awards vested — $ — (9) $ 238.96 Awards forfeited — $ — (5) $ 377.87 Unvested performance-based awards outstanding as of December 31, 2022 9 $ 165.87 15 $ 412.60 Awards granted — $ — 6 $ 258.19 Awards vested (9) $ 165.87 (7) $ 229.98 Awards forfeited — $ — (1) $ 363.93 Unvested performance-based awards outstanding as of December 31, 2023 — $ — 13 $ 441.87
Schedule of Fair Value of Performance-Based Awards Vested	The fair value of vested performance-based awards (measured at the vesting date) for the years ended December 31, 2023, 2022 and 2021 was as follows: For the Years Ended December 31, 2023 2022 2021 Equity-classified equity-settled Restricted stock $ 2,237 $ — $ — Restricted stock units $ 1,581 $ 2,914 $ 2,215 Total fair value of vested performance-based awards $ 3,818 $ 2,914 $ 2,215
Schedule of Assumptions Used	The Black-Scholes model relies on a number of key assumptions to calculate estimated fair values. The model incorporated the following weighted average assumptions for the years ended December 31, 2023, 2022 and 2021: For the Years Ended December 31, 2023 2022 2021 Expected volatility 48.0 % 86.8 % 23.1 % Expected term (in years) 0.50 0.50 0.50 Risk-free interest rate 5.3 % 3.0 % 0.1 % Expected dividends — % — % — %

INCOME TAXES (Tables)

INCOME TAXES (Tables)	12 Months Ended
	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Schedule of Income Before Provision of Income Taxes	Income before provision for income taxes based on geographic location is disclosed in the table below: For the Years Ended December 31, 2023 2022 2021 Income before provision for income taxes: United States $ 210,875 $ 78,564 $ 128,498 Foreign 325,710 428,694 404,894 Total $ 536,585 $ 507,258 $ 533,392
Schedule of Provision for Income Taxes	The provision for income taxes consists of the following: For the Years Ended December 31, 2023 2022 2021 Current Federal $ 54,763 $ 20,044 $ 22,742 State 15,922 10,116 6,735 Foreign 86,012 99,847 69,162 Deferred Federal (20,519) (26,379) (40,421) State (5,206) (3,483) (2,576) Foreign (11,470) (12,303) (3,902) Total $ 119,502 $ 87,842 $ 51,740
Schedule of Effective Tax Rate Reconciliation	The reconciliation of the provision for income taxes at the federal statutory income tax rate to the Company’s effective income tax rate is as follows: For the Years Ended December 31, 2023 2022 2021 Provision for income taxes at federal statutory rate $ 112,690 $ 106,514 $ 112,016 Increase/(decrease) in taxes resulting from: GILTI and BEAT U.S. taxes 391 355 229 Excess tax benefits relating to stock-based compensation (19,829) (35,119) (71,628) Foreign tax expense and tax rate differential 5,208 4,902 (206) Effect of permanent differences 4,210 7,812 4,756 State taxes, net of federal benefit 12,347 9,323 9,192 Stock-based compensation expense 5,869 3,869 1,102 Impact of election to change entity classification (2,109) (8,264) — Tax credits (1,824) (2,876) (4,100) Other 2,549 1,326 379 Provision for income taxes $ 119,502 $ 87,842 $ 51,740
Schedule of Significant Components of Deferred Tax Assets and Liabilities	Significant components of the Company’s deferred tax assets and liabilities are as follows: As of December 31, 2023 As of December 31, 2022 Deferred tax assets: Property and equipment $ 13,359 $ 11,587 Accrued expenses 77,757 87,816 Accrued sales discounts 11,148 9,185 Stock-based compensation 36,488 33,078 Operating lease liabilities 40,549 43,662 R&D capitalization 77,601 36,915 Deferred consideration 13,762 14,030 Foreign currency exchange 2,688 11,284 Other 27,149 19,955 Deferred tax assets $ 300,501 $ 267,512 Less: valuation allowance (7,622) (6,728) Total deferred tax assets $ 292,879 $ 260,784 Deferred tax liabilities: Property and equipment $ 13,590 $ 15,324 Intangible assets 27,914 24,523 Operating lease right-of-use assets 39,551 42,211 U.S. taxation of foreign subsidiaries 13,955 11,465 Other 8,711 7,232 Total deferred tax liabilities $ 103,721 $ 100,755 Net deferred tax assets $ 189,158 $ 160,029
Schedule of Unrecognized Tax Benefits Roll Forward	A reconciliation of the beginning and ending balances of the gross unrecognized tax benefits changes for the years ended December 31, 2023, December 31, 2022 and December 31, 2021 are as follows: For the Years Ended December 31, 2023 2022 2021 Beginning Balance $ 7,865 $ 8,155 $ 3,317 Increases in tax positions from current year 3,307 4,739 5,310 Increases in tax positions from acquisitions — 393 — Increases in tax positions from prior years 716 2,447 1,350 Decreases in tax positions from prior years (47) (6,945) — Decreases due to lapse of statute of limitations (438) (1,121) (1,298) Currency 68 197 (524) Ending Balance $ 11,471 $ 7,865 $ 8,155

EARNINGS PER SHARE (Tables)

EARNINGS PER SHARE (Tables)	12 Months Ended
	Dec. 31, 2023
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings Per Share	The following table sets forth the computation of basic and diluted earnings per share of common stock as follows: For the Years Ended December 31, 2023 2022 2021 Numerator for basic and diluted earnings per share: Net income $ 417,083 $ 419,416 $ 481,652 Numerator for basic and diluted earnings per share $ 417,083 $ 419,416 $ 481,652 Denominator: Weighted average common shares for basic earnings per share 57,829 57,291 56,511 Net effect of dilutive stock options, restricted stock units, restricted stock awards and stock issuable under the ESPP 1,256 1,878 2,553 Weighted average common shares for diluted earnings per share 59,085 59,169 59,064 Net Income per share: Basic $ 7.21 $ 7.32 $ 8.52 Diluted $ 7.06 $ 7.09 $ 8.15

SEGMENT INFORMATION (Tables)

SEGMENT INFORMATION (Tables)	12 Months Ended
	Dec. 31, 2023
Segment Reporting [Abstract]
Revenues from External Customers and Operating Profit Before Unallocated Expenses	Revenues from external customers and operating profit, before unallocated expenses, by reportable segments were as follows: For the Years Ended December 31, 2023 2022 2021 Segment revenues: North America $ 2,765,022 $ 2,898,554 $ 2,242,248 Europe 1,909,443 1,853,056 1,350,484 Russia 16,075 73,088 165,412 Total revenues $ 4,690,540 $ 4,824,698 $ 3,758,144 Segment operating profit/(loss): North America $ 520,945 $ 589,412 $ 462,798 Europe 250,634 223,276 233,727 Russia (5,866) (13,460) 32,547 Total segment operating profit $ 765,713 $ 799,228 $ 729,072
Reconciliation of Segment Operating Profit to Consolidated Income Before Provision for Income Taxes	Reconciliation of segment operating profit to consolidated income before provision for income taxes is presented below: For the Years Ended December 31, 2023 2022 2021 Total segment operating profit: $ 765,713 $ 799,228 $ 729,072 Unallocated costs: Stock-based compensation expense (147,730) (99,909) (111,655) Amortization of purchased intangibles (22,717) (22,223) (17,646) Other acquisition-related expenses (2,723) (1,537) (6,397) Loss on sale of business (25,922) — — Other unallocated costs (65,382) (102,593) (51,058) Income from operations 501,239 572,966 542,316 Interest and other income/(loss), net 51,124 10,025 (1,727) Foreign exchange loss (15,778) (75,733) (7,197) Income before provision for income taxes $ 536,585 $ 507,258 $ 533,392
Physical Locations and Values of Long-Lived Assets	Physical locations and values of the Company’s long-lived assets are presented below: As of December 31, 2023 As of December 31, 2022 As of December 31, 2021 Ukraine $ 62,653 $ 70,183 $ 78,289 Belarus 49,875 57,311 75,422 United States 42,510 68,804 14,843 Poland 15,057 14,685 8,240 India 12,735 8,506 9,459 Hungary 6,683 8,552 5,339 Russia — — 16,611 Other 45,540 45,307 28,011 Total $ 235,053 $ 273,348 $ 236,214
Revenues by Customer Location	The table below presents the Company’s revenues by customer location for the years ended December 31, 2023, 2022 and 2021: For the Years Ended December 31, 2023 2022 2021 United States $ 2,633,730 $ 2,761,050 $ 2,125,301 United Kingdom 585,172 619,305 474,941 Switzerland 367,121 323,424 271,208 Netherlands 236,292 215,444 154,816 Germany 178,492 161,758 113,727 Canada 97,983 114,910 96,646 Russia 13,290 64,745 155,186 Other locations 578,460 564,062 366,319 Revenues $ 4,690,540 $ 4,824,698 $ 3,758,144

ACCUMULATED OTHER COMPREHENSI_2

ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)	12 Months Ended
	Dec. 31, 2023
Equity [Abstract]
Components of Accumulated Other Comprehensive Loss	The following table summarizes the changes in the accumulated balances for each component of accumulated other comprehensive loss: For the Years Ended December 31, 2023 2022 2021 Foreign currency translation Beginning balance $ (101,780) $ (52,747) $ (28,168) Foreign currency translation 45,035 (45,295) (29,323) Net loss reclassified into Loss on sale of business 23,931 — — Income tax (expense)/benefit (10,787) (3,738) 4,744 Foreign currency translation, net of tax 58,179 (49,033) (24,579) Ending balance $ (43,601) $ (101,780) $ (52,747) Cash flow hedging instruments Beginning balance $ 8,306 $ (3,417) $ 3,642 Unrealized gain/(loss) in fair value 25,352 (49,233) (13,781) Net (gain)/ loss reclassified into Cost of revenues (exclusive of depreciation and amortization) (25,695) 20,331 4,649 Net (gain)/ loss reclassified into Foreign exchange loss (234) 44,067 — Income tax benefit/(expense) 90 (3,442) 2,073 Cash flow hedging instruments, net of tax (487) 11,723 (7,059) Ending balance (1) $ 7,819 $ 8,306 $ (3,417) Defined benefit plans Beginning balance $ (1,847) $ 1,957 $ (986) Actuarial (losses)/gains (1,856) (4,892) 3,805 Income tax benefit/(expense) 445 1,088 (862) Defined benefit plans, net of tax (1,411) (3,804) 2,943 Ending balance $ (3,258) $ (1,847) $ 1,957 Accumulated other comprehensive loss $ (39,040) $ (95,321) $ (54,207) (1) As of December 31, 2023, the ending balance of net unrealized gain related to derivatives designated as cash flow hedges is expected to be reclassified into Cost of revenues (exclusive of depreciation and amortization) in the next twelve months.

ORGANIZATION AND SUMMARY OF S_3

ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Organization) (Details)	Dec. 31, 2023 continent
Accounting Policies [Abstract]
Number of continents in which entity operates	6

ORGANIZATION AND SUMMARY OF S_4

ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Property and Equipment) (Details)	Dec. 31, 2023
Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life (in years)	2 years
Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life (in years)	50 years

ORGANIZATION AND SUMMARY OF S_5

ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Goodwill and Other Indefinite-Lived Intangible Assets) (Details) $ in Thousands	Dec. 31, 2023 USD ($)
Accounting Policies [Abstract]
Indefinite-lived intangible assets other than goodwill	$ 0

ORGANIZATION AND SUMMARY OF S_6

ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Revenue Recognition) (Details)	12 Months Ended
	Dec. 31, 2023 business
Accounting Policies [Abstract]
Number of geographic markets	4

ORGANIZATION AND SUMMARY OF S_7

ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Risks and Uncertainties) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Concentration Risk [Line Items]
Cash and cash equivalents	$ 2,036,235	$ 1,681,344	$ 1,446,625
Ukraine
Concentration Risk [Line Items]
Cash and cash equivalents	45,800
Belarus
Concentration Risk [Line Items]
Cash and cash equivalents	$ 38,300

IMPACT OF THE INVASION OF UKR_2

IMPACT OF THE INVASION OF UKRAINE (Narrative) (Details) - USD ($)	3 Months Ended		12 Months Ended
	Dec. 31, 2023	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Mar. 04, 2022
Unusual or Infrequent Item, or Both [Line Items]
Property and equipment, net	$ 235,053,000		$ 235,053,000	$ 273,348,000	$ 236,214,000
Operating lease right-of-use assets, net	134,898,000		134,898,000	148,780,000
Commitments related to operating lease agreements that have not yet commenced	9,900,000		9,900,000
Cost of revenues (exclusive of depreciation and amortization)			3,256,514,000	3,286,683,000	2,483,697,000
Selling, general and administrative expenses			815,065,000	872,777,000	648,736,000
Impairment charges			6,019,000	23,619,000	144,000
Impairment, long-lived asset, held-for-use, statement of income or comprehensive income		Selling, general and administrative expenses
Goodwill, Impairment Loss				686,000
Bad debt expense			$ 4,047,000	12,394,000	2,488,000
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]			Loss on sale of business
Discontinued Operations, Disposed of by Sale
Unusual or Infrequent Item, or Both [Line Items]
Loss on sale of holdings	25,900,000
Humanitarian Commitment
Unusual or Infrequent Item, or Both [Line Items]
Commitments related to operating lease agreements that have not yet commenced	37,800,000		$ 37,800,000
Nonoperating expense	17,400,000			44,800,000
Cost of revenues (exclusive of depreciation and amortization)			11,300,000	29,000,000
Selling, general and administrative expenses			6,100,000	15,800,000
Ukraine
Unusual or Infrequent Item, or Both [Line Items]
Property and equipment, net	62,653,000		62,653,000	70,183,000	78,289,000
Operating lease right-of-use assets, net	6,600,000		6,600,000
Ukraine | Cost of revenues (exclusive of depreciation and amortization)
Unusual or Infrequent Item, or Both [Line Items]
Standby resources expense			1,800,000	14,700,000
Ukraine | Selling, general and administrative expenses
Unusual or Infrequent Item, or Both [Line Items]
Standby resources expense			9,400,000	38,700,000
Ukraine | Other income/(expense)
Unusual or Infrequent Item, or Both [Line Items]
Impairment charges				1,300,000
Ukraine | Humanitarian Commitment
Unusual or Infrequent Item, or Both [Line Items]
Commitments related to operating lease agreements that have not yet commenced						$ 100,000,000
Ukraine | Building
Unusual or Infrequent Item, or Both [Line Items]
Property and equipment, net	62,700,000		62,700,000
Ukraine | Construction in Progress
Unusual or Infrequent Item, or Both [Line Items]
Property and equipment, net	51,500,000		51,500,000
Ukraine | Computer Equipment
Unusual or Infrequent Item, or Both [Line Items]
Property and equipment, net	5,900,000		5,900,000
Ukraine | Furniture and Fixtures
Unusual or Infrequent Item, or Both [Line Items]
Property and equipment, net	4,200,000		4,200,000
Ukraine | Leasehold Improvements
Unusual or Infrequent Item, or Both [Line Items]
Property and equipment, net	1,100,000		1,100,000
Russia
Unusual or Infrequent Item, or Both [Line Items]
Property and equipment, net	$ 0		0	0	$ 16,611,000
Impairment of property, plant and equipment		$ 15,100,000
Operating lease, impairment loss		3,800,000
Goodwill, Impairment Loss		$ 700,000
Bad debt expense				5,100,000
Russia | Employee Severance
Unusual or Infrequent Item, or Both [Line Items]
Employee separation costs			$ 0	$ 17,100,000

ACQUISITIONS (Narrative) (Detai

ACQUISITIONS (Narrative) (Details) $ in Thousands					12 Months Ended
	Nov. 30, 2021 USD ($)	Nov. 03, 2021 USD ($)	Jul. 23, 2021 USD ($)	Apr. 02, 2021 USD ($) specialist	Dec. 31, 2023 USD ($) business	Dec. 31, 2022 USD ($) business	Dec. 31, 2021 USD ($) business
Business Acquisition [Line Items]
Contingent consideration					$ 14,850	$ 2,645	$ 57,249
PolSource
Business Acquisition [Line Items]
Equity interest acquired				100%
Number of specialists in acquired entity (more than) | specialist				350
Purchase price including contingent consideration				$ 148,200
Contingent consideration				35,400
Maximum amount of earnout payable				45,000
Acquisition related costs							1,400
Revenue of acquiree							55,000
Intangible assets				15,790
Amount				15,790
PolSource | Customer relationships
Business Acquisition [Line Items]
Amount				$ 14,790
CORE
Business Acquisition [Line Items]
Equity interest acquired			100%
Purchase price including contingent consideration			$ 50,200
Contingent consideration			4,000
Maximum amount of earnout payable			8,100
Deferred consideration			7,800
Acquisition related costs							1,200
Revenue of acquiree							14,100
Intangible assets			8,368
Amount			8,368
CORE | Customer relationships
Business Acquisition [Line Items]
Amount			$ 7,779
Emakina
Business Acquisition [Line Items]
Equity interest acquired	1.31%	98.69%
Cash consideration	$ 1,700	$ 143,400
Acquisition related costs							1,000
Revenue of acquiree							24,700
Intangible assets		30,488
Amount		30,488
Emakina | Customer relationships
Business Acquisition [Line Items]
Amount		$ 27,822
Other 2021 Acquisitions purchase accounting adjustments
Business Acquisition [Line Items]
Contingent consideration							17,600
Maximum amount of earnout payable							30,200
Revenue of acquiree							$ 19,500
Number of completed acquisitions | business							4,000
Purchase price including contingent consideration							$ 65,200
Intangible assets							$ 14,100
Other 2021 Acquisitions purchase accounting adjustments | Minimum
Business Acquisition [Line Items]
Estimated future operating results, period							12 months
Other 2021 Acquisitions purchase accounting adjustments | Maximum
Business Acquisition [Line Items]
Estimated future operating results, period							48 months
2022 Acquisitions purchase accounting adjustments
Business Acquisition [Line Items]
Purchase price including contingent consideration						13,600
Contingent consideration						2,600
Revenue of acquiree						$ 8,700
Number of completed acquisitions | business						2
2022 Acquisitions purchase accounting adjustments | Customer relationships
Business Acquisition [Line Items]
Amount						$ 3,400
2023 Acquisitions
Business Acquisition [Line Items]
Purchase price including contingent consideration					42,600
Contingent consideration					14,900
Revenue of acquiree					$ 8,200
Number of completed acquisitions | business					2
2023 Acquisitions | Customer relationships
Business Acquisition [Line Items]
Amount					$ 13,900

ACQUISITIONS (Schedule of Fair

ACQUISITIONS (Schedule of Fair Values of Net Assets Acquired and Liabilities Assumed) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Nov. 03, 2021	Jul. 23, 2021	Apr. 02, 2021
Business Acquisition [Line Items]
Goodwill	$ 562,459	$ 529,072	$ 530,723
PolSource
Business Acquisition [Line Items]
Cash and cash equivalents						$ 2,565
Trade receivables and contract assets						12,734
Prepaid and other current assets						814
Goodwill						125,265
Intangible assets						15,790
Property and equipment and other noncurrent assets						461
Total assets acquired						157,629
Accounts payable, accrued expenses and other current liabilities						5,337
Short-term debt						0
Long-term debt						0
Operating lease liabilities, noncurrent						157
Other noncurrent liabilities						3,963
Total liabilities assumed						9,457
Noncontrolling interest in consolidated subsidiaries						0
Net assets acquired						$ 148,172
CORE
Business Acquisition [Line Items]
Cash and cash equivalents					$ 11,283
Trade receivables and contract assets					10,266
Prepaid and other current assets					5,430
Goodwill					24,194
Intangible assets					8,368
Property and equipment and other noncurrent assets					4,585
Total assets acquired					64,126
Accounts payable, accrued expenses and other current liabilities					9,336
Short-term debt					0
Long-term debt					0
Operating lease liabilities, noncurrent					2,056
Other noncurrent liabilities					2,525
Total liabilities assumed					13,917
Noncontrolling interest in consolidated subsidiaries					0
Net assets acquired					$ 50,209
Emakina
Business Acquisition [Line Items]
Cash and cash equivalents				$ 5,142
Trade receivables and contract assets				34,389
Prepaid and other current assets				3,109
Goodwill				139,417
Intangible assets				30,488
Property and equipment and other noncurrent assets				16,802
Total assets acquired				229,347
Accounts payable, accrued expenses and other current liabilities				37,469
Short-term debt				13,657
Long-term debt				8,874
Operating lease liabilities, noncurrent				5,541
Other noncurrent liabilities				9,319
Total liabilities assumed				74,860
Noncontrolling interest in consolidated subsidiaries				10,469
Net assets acquired				$ 144,018

ACQUISITIONS (Schedule of Acqui

ACQUISITIONS (Schedule of Acquired Finite-Lived Intangible Assets by Major Class) (Details) - USD ($) $ in Thousands	Nov. 03, 2021	Jul. 23, 2021	Apr. 02, 2021
PolSource
Acquired Finite-Lived Intangible Assets [Line Items]
Amount			$ 15,790
CORE
Acquired Finite-Lived Intangible Assets [Line Items]
Amount		$ 8,368
Emakina
Acquired Finite-Lived Intangible Assets [Line Items]
Amount	$ 30,488
Customer relationships | PolSource
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life (in years)			6 years
Amount			$ 14,790
Customer relationships | CORE
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life (in years)		6 years
Amount		$ 7,779
Customer relationships | Emakina
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life (in years)	7 years
Amount	$ 27,822
Trade names | PolSource
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life (in years)			3 years
Amount			$ 1,000
Trade names | CORE
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life (in years)		5 years
Amount		$ 589
Trade names | Emakina
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted Average Useful Life (in years)	3 years
Amount	$ 2,666

GOODWILL AND INTANGIBLE ASSET_3

GOODWILL AND INTANGIBLE ASSETS, NET (Schedule of Goodwill by Reportable Segment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Goodwill [Roll Forward]
Balance beginning of period	$ 529,072	$ 530,723
Goodwill, Impairment Loss		(686)
Effect of net foreign currency exchange rate changes	8,823	(15,493)
Balance end of period	562,459	529,072
North America
Goodwill [Roll Forward]
Balance beginning of period	216,960	217,594
Goodwill, Impairment Loss		0
Effect of net foreign currency exchange rate changes	423	(570)
Balance end of period	241,860	216,960
Europe
Goodwill [Roll Forward]
Balance beginning of period	312,112	312,413
Goodwill, Impairment Loss		0
Effect of net foreign currency exchange rate changes	8,400	(14,893)
Balance end of period	320,599	312,112
Russia
Goodwill [Roll Forward]
Balance beginning of period	0	716
Goodwill, Impairment Loss		(686)
Effect of net foreign currency exchange rate changes	0	(30)
Balance end of period	0	0
Emakina
Goodwill [Roll Forward]
Purchase accounting adjustments		2,602
Emakina | North America
Goodwill [Roll Forward]
Purchase accounting adjustments		0
Emakina | Europe
Goodwill [Roll Forward]
Purchase accounting adjustments		2,602
Emakina | Russia
Goodwill [Roll Forward]
Purchase accounting adjustments		0
PolSource
Goodwill [Roll Forward]
Purchase accounting adjustments		(74)
PolSource | North America
Goodwill [Roll Forward]
Purchase accounting adjustments		(44)
PolSource | Europe
Goodwill [Roll Forward]
Purchase accounting adjustments		(30)
PolSource | Russia
Goodwill [Roll Forward]
Purchase accounting adjustments		0
CORE
Goodwill [Roll Forward]
Purchase accounting adjustments		959
CORE | North America
Goodwill [Roll Forward]
Purchase accounting adjustments		0
CORE | Europe
Goodwill [Roll Forward]
Purchase accounting adjustments		959
CORE | Russia
Goodwill [Roll Forward]
Purchase accounting adjustments		0
Other 2021 Acquisitions purchase accounting adjustments
Goodwill [Roll Forward]
Purchase accounting adjustments		917
Other 2021 Acquisitions purchase accounting adjustments | North America
Goodwill [Roll Forward]
Purchase accounting adjustments		(20)
Other 2021 Acquisitions purchase accounting adjustments | Europe
Goodwill [Roll Forward]
Purchase accounting adjustments		937
Other 2021 Acquisitions purchase accounting adjustments | Russia
Goodwill [Roll Forward]
Purchase accounting adjustments		0
2022 Acquisitions purchase accounting adjustments
Goodwill [Roll Forward]
Acquisitions		10,124
Purchase accounting adjustments	87
2022 Acquisitions purchase accounting adjustments | North America
Goodwill [Roll Forward]
Acquisitions		0
Purchase accounting adjustments	0
2022 Acquisitions purchase accounting adjustments | Europe
Goodwill [Roll Forward]
Acquisitions		10,124
Purchase accounting adjustments	87
2022 Acquisitions purchase accounting adjustments | Russia
Goodwill [Roll Forward]
Acquisitions		$ 0
Purchase accounting adjustments	0
2023 Acquisitions
Goodwill [Roll Forward]
Acquisitions	24,477
2023 Acquisitions | North America
Goodwill [Roll Forward]
Acquisitions	24,477
2023 Acquisitions | Europe
Goodwill [Roll Forward]
Acquisitions	0
2023 Acquisitions | Russia
Goodwill [Roll Forward]
Acquisitions	$ 0

GOODWILL AND INTANGIBLE ASSET_4

GOODWILL AND INTANGIBLE ASSETS, NET (Goodwill Accumulated Impairment Losses) (Narrative) (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Russia
Goodwill [Line Items]
Accumulated goodwill impairment losses		$ 2,900,000	$ 2,200,000
North America
Goodwill [Line Items]
Accumulated goodwill impairment losses	$ 0	0	0
Europe
Goodwill [Line Items]
Accumulated goodwill impairment losses	$ 0	$ 0	$ 0

GOODWILL AND INTANGIBLE ASSET_5

GOODWILL AND INTANGIBLE ASSETS, NET (Schedule of Intangible Assets Components and Amortization Expense Recognized) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 190,567	$ 172,849
Accumulated amortization	(119,449)	(95,197)
Net  carrying amount	71,118	77,652
Amortization of purchased intangibles	$ 22,717	$ 22,223	$ 17,646
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted average life at acquisition (in years)	8 years	8 years
Gross carrying amount	$ 171,735	$ 154,407
Accumulated amortization	(103,651)	(82,505)
Net  carrying amount	68,084	71,902
Amortization of purchased intangibles	$ 19,855	$ 18,946	15,399
Trade names
Finite-Lived Intangible Assets [Line Items]
Weighted average life at acquisition (in years)	4 years	4 years
Gross carrying amount	$ 10,798	$ 10,520
Accumulated amortization	(9,588)	(7,900)
Net  carrying amount	1,210	2,620
Amortization of purchased intangibles	$ 1,522	$ 1,909	842
Software
Finite-Lived Intangible Assets [Line Items]
Weighted average life at acquisition (in years)	6 years	6 years
Gross carrying amount	$ 6,134	$ 6,022
Accumulated amortization	(4,825)	(3,644)
Net  carrying amount	1,309	2,378
Amortization of purchased intangibles	$ 1,102	$ 1,086	1,114
Contract royalties
Finite-Lived Intangible Assets [Line Items]
Weighted average life at acquisition (in years)	8 years	8 years
Gross carrying amount	$ 1,900	$ 1,900
Accumulated amortization	(1,385)	(1,148)
Net  carrying amount	515	752
Amortization of purchased intangibles	238	238	238
Assembled workforce
Finite-Lived Intangible Assets [Line Items]
Amortization of purchased intangibles	$ 0	$ 44	$ 53

GOODWILL AND INTANGIBLE ASSET_6

GOODWILL AND INTANGIBLE ASSETS, NET (Schedule of Estimated Amortization Expense) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
2024	$ 22,080
2025	18,264
2026	14,133
2027	9,870
2028	2,999
Thereafter	3,772
Net  carrying amount	$ 71,118	$ 77,652

FAIR VALUE MEASUREMENTS (Schedu

FAIR VALUE MEASUREMENTS (Schedule of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - Recurring - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Financial Assets:
Rights to acquire noncontrolling interest in consolidated subsidiaries		$ 334
Total assets measured at fair value on a recurring basis	$ 10,416	12,525
Financial Liabilities:
Contingent consideration	23,150	24,308
Total liabilities measured at fair value on a recurring basis	23,398	33,658
Foreign Exchange Contract
Financial Assets:
Foreign exchange derivative assets	10,416	12,191
Financial Liabilities:
Foreign exchange derivative liabilities	248	9,350
Level 1
Financial Assets:
Rights to acquire noncontrolling interest in consolidated subsidiaries		0
Total assets measured at fair value on a recurring basis	0	0
Financial Liabilities:
Contingent consideration	0	0
Total liabilities measured at fair value on a recurring basis	0	0
Level 1 | Foreign Exchange Contract
Financial Assets:
Foreign exchange derivative assets	0	0
Financial Liabilities:
Foreign exchange derivative liabilities	0	0
Level 2
Financial Assets:
Rights to acquire noncontrolling interest in consolidated subsidiaries		0
Total assets measured at fair value on a recurring basis	10,416	12,191
Financial Liabilities:
Contingent consideration	0	0
Total liabilities measured at fair value on a recurring basis	248	9,350
Level 2 | Foreign Exchange Contract
Financial Assets:
Foreign exchange derivative assets	10,416	12,191
Financial Liabilities:
Foreign exchange derivative liabilities	248	9,350
Level 3
Financial Assets:
Rights to acquire noncontrolling interest in consolidated subsidiaries		334
Total assets measured at fair value on a recurring basis	0	334
Financial Liabilities:
Contingent consideration	23,150	24,308
Total liabilities measured at fair value on a recurring basis	23,150	24,308
Level 3 | Foreign Exchange Contract
Financial Assets:
Foreign exchange derivative assets	0	0
Financial Liabilities:
Foreign exchange derivative liabilities	$ 0	$ 0

FAIR VALUE MEASUREMENTS (Narrat

FAIR VALUE MEASUREMENTS (Narrative) (Details) - Discount rate	Dec. 31, 2023	Jul. 23, 2021	Apr. 02, 2021
PolSource
Business Acquisition, Contingent Consideration [Line Items]
Measurement input to determine fair value of contingent consideration			0.004
2023 Acquisitions
Business Acquisition, Contingent Consideration [Line Items]
Measurement input to determine fair value of contingent consideration	0.160
CORE
Business Acquisition, Contingent Consideration [Line Items]
Measurement input to determine fair value of contingent consideration		0.130
Minimum | 2022 Acquisitions purchase accounting adjustments
Business Acquisition, Contingent Consideration [Line Items]
Measurement input to determine fair value of contingent consideration	0.130
Minimum | Other 2021 Acquisitions purchase accounting adjustments
Business Acquisition, Contingent Consideration [Line Items]
Measurement input to determine fair value of contingent consideration		0.150
Maximum | 2022 Acquisitions purchase accounting adjustments
Business Acquisition, Contingent Consideration [Line Items]
Measurement input to determine fair value of contingent consideration	0.150
Maximum | Other 2021 Acquisitions purchase accounting adjustments
Business Acquisition, Contingent Consideration [Line Items]
Measurement input to determine fair value of contingent consideration		0.220

FAIR VALUE MEASUREMENTS (Sche_2

FAIR VALUE MEASUREMENTS (Schedule of Acquisition-Related Contingent Consideration Roll Forward) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Amount
Fair value, liability, recurring basis, unobservable input reconciliation, gain (loss), statement of income or comprehensive income [extensible enumeration]	Interest and other income/(loss), net
Level 3
Amount
Contingent consideration, beginning of period	$ 24,308	$ 23,114	$ 7,470
Changes in fair value of contingent consideration included in Interest and other income/(loss), net	2,814	11,101	8,782
Payment of contingent consideration for previously acquired businesses	(18,844)	(11,328)	(50,000)
Effect of net foreign currency exchange rate changes	22	(1,224)	(387)
Contingent consideration, end of period	23,150	24,308	23,114
Level 3 | PolSource
Amount
Acquisition date fair value of contingent consideration			35,400
Level 3 | CORE
Amount
Acquisition date fair value of contingent consideration			4,007
Level 3 | Emakina
Amount
Acquisition date fair value of contingent consideration			213
Level 3 | Other 2021 Acquisitions purchase accounting adjustments
Amount
Acquisition date fair value of contingent consideration			$ 17,629
Level 3 | 2022 Acquisitions purchase accounting adjustments
Amount
Acquisition date fair value of contingent consideration		$ 2,645
Level 3 | 2023 Acquisitions
Amount
Acquisition date fair value of contingent consideration	$ 14,850

FAIR VALUE MEASUREMENTS (Sche_3

FAIR VALUE MEASUREMENTS (Schedule of Estimated Fair Values of Financial Assets and Liabilities Not Measured at Fair Value on a Recurring Basis) (Details) - Recurring - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Balance
Financial Assets:
Cash equivalents:	$ 273,330	$ 312,321
Financial Liabilities:
Short-term debt		2,861
Other long-term debt		2,693
Deferred consideration for asset acquisition	46,954
Balance | Time deposits included in Short-term investments
Financial Assets:
Time deposits included in Short-term investments	60,739	60,336
Financial Liabilities:
Deferred consideration for asset acquisition		53,636
Balance | Money market funds
Financial Assets:
Cash equivalents:	168,120	312,321
Balance | Time deposits included in Short-term investments
Financial Assets:
Cash equivalents:	105,210
Balance | Revolving Credit Facility | 2021 Credit Facility
Financial Liabilities:
Borrowings under 2021 Credit Agreement	25,000	25,000
Estimated Fair Value
Financial Assets:
Cash equivalents:	273,330	312,321
Financial Liabilities:
Short-term debt		2,861
Other long-term debt		2,693
Deferred consideration for asset acquisition	46,954
Estimated Fair Value | Time deposits included in Short-term investments
Financial Assets:
Time deposits included in Short-term investments	60,739	60,336
Financial Liabilities:
Deferred consideration for asset acquisition		53,636
Estimated Fair Value | Money market funds
Financial Assets:
Cash equivalents:	168,120	312,321
Estimated Fair Value | Time deposits included in Short-term investments
Financial Assets:
Cash equivalents:	105,210
Estimated Fair Value | Revolving Credit Facility | 2021 Credit Facility
Financial Liabilities:
Borrowings under 2021 Credit Agreement	25,000	25,000
Estimated Fair Value | Level 1
Financial Assets:
Cash equivalents:	168,120	312,321
Financial Liabilities:
Short-term debt		0
Other long-term debt		0
Deferred consideration for asset acquisition	0
Estimated Fair Value | Level 1 | Time deposits included in Short-term investments
Financial Assets:
Time deposits included in Short-term investments	0	0
Financial Liabilities:
Deferred consideration for asset acquisition		0
Estimated Fair Value | Level 1 | Money market funds
Financial Assets:
Cash equivalents:	168,120	312,321
Estimated Fair Value | Level 1 | Time deposits included in Short-term investments
Financial Assets:
Cash equivalents:	0
Estimated Fair Value | Level 1 | Revolving Credit Facility | 2021 Credit Facility
Financial Liabilities:
Borrowings under 2021 Credit Agreement	0	0
Estimated Fair Value | Level 2
Financial Assets:
Cash equivalents:	105,210	0
Financial Liabilities:
Short-term debt		2,861
Other long-term debt		2,693
Deferred consideration for asset acquisition	46,954
Estimated Fair Value | Level 2 | Time deposits included in Short-term investments
Financial Assets:
Time deposits included in Short-term investments	60,739	60,336
Financial Liabilities:
Deferred consideration for asset acquisition		53,636
Estimated Fair Value | Level 2 | Money market funds
Financial Assets:
Cash equivalents:	0	0
Estimated Fair Value | Level 2 | Time deposits included in Short-term investments
Financial Assets:
Cash equivalents:	105,210
Estimated Fair Value | Level 2 | Revolving Credit Facility | 2021 Credit Facility
Financial Liabilities:
Borrowings under 2021 Credit Agreement	25,000	25,000
Estimated Fair Value | Level 3
Financial Assets:
Cash equivalents:	0	0
Financial Liabilities:
Short-term debt		0
Other long-term debt		0
Deferred consideration for asset acquisition	0
Estimated Fair Value | Level 3 | Time deposits included in Short-term investments
Financial Assets:
Time deposits included in Short-term investments	0	0
Financial Liabilities:
Deferred consideration for asset acquisition		0
Estimated Fair Value | Level 3 | Money market funds
Financial Assets:
Cash equivalents:	0	0
Estimated Fair Value | Level 3 | Time deposits included in Short-term investments
Financial Assets:
Cash equivalents:	0
Estimated Fair Value | Level 3 | Revolving Credit Facility | 2021 Credit Facility
Financial Liabilities:
Borrowings under 2021 Credit Agreement	$ 0	$ 0

FAIR VALUE MEASUREMENTS (Non-Ma

FAIR VALUE MEASUREMENTS (Non-Marketable Securities Without Readily Determinable Fair Values) (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Other noncurrent assets
Equity Securities without Readily Determinable Fair Value [Line Items]
Carrying amount of investments in equity securities	$ 31.7	$ 28.4

DERIVATIVE FINANCIAL INSTRUME_3

DERIVATIVE FINANCIAL INSTRUMENTS (Schedule of Fair Value of Derivative Instruments) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Foreign exchange loss		$ 15,778,000	$ 75,733,000	$ 7,197,000
Foreign Exchange Forward | Reclassification out of Accumulated Other Comprehensive Income | Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest
Derivatives, Fair Value [Line Items]
Foreign exchange loss	$ 43,900,000
Foreign Exchange Contract
Derivatives, Fair Value [Line Items]
Financial collateral required to be posted		0
Foreign Exchange Contract | Designated as Hedging Instrument | Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Asset Derivatives		10,416,000	12,191,000
Foreign Exchange Contract | Designated as Hedging Instrument | Accrued expenses and other current liabilities
Derivatives, Fair Value [Line Items]
Liability Derivatives		248,000	1,445,000
Foreign Exchange Contract | Not Designated as Hedging Instrument | Accrued expenses and other current liabilities
Derivatives, Fair Value [Line Items]
Liability Derivatives		$ 0	$ 7,905,000

PROPERTY AND EQUIPMENT, NET (Sc

PROPERTY AND EQUIPMENT, NET (Schedule of Components of Property and Equipment and Depreciation) (Details) $ in Thousands		12 Months Ended
	Nov. 17, 2021 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Property, Plant and Equipment [Line Items]
Property and equipment, gross		$ 432,579	$ 440,443
Less: accumulated depreciation and amortization		(197,526)	(167,095)
Total		235,053	273,348	$ 236,214
Depreciation and amortization expense		68,200	69,000	65,500
Payments to acquire an office building		28,415	81,629	111,501
Software Licenses
Property, Plant and Equipment [Line Items]
Purchase price		26,700	66,100
Payment to acquire assets		6,800	13,300
Deferred contingent consideration		19,900	$ 52,800
Decrease in deferred payments for asset acquisition		21,400
Derecognition of intangible assets		$ 20,800
Software Licenses | Discount rate
Property, Plant and Equipment [Line Items]
Discount rate		0.055	0.052
Computer hardware
Property, Plant and Equipment [Line Items]
Weighted Average Useful Life (in years)		4 years
Property and equipment, gross		$ 155,991	$ 157,283
Purchased computer software
Property, Plant and Equipment [Line Items]
Weighted Average Useful Life (in years)		5 years
Property and equipment, gross		$ 88,644	99,414
Buildings
Property, Plant and Equipment [Line Items]
Weighted Average Useful Life (in years)		45 years
Property and equipment, gross		$ 54,899	54,627
Leasehold improvements
Property, Plant and Equipment [Line Items]
Weighted Average Useful Life (in years)		7 years
Property and equipment, gross		$ 37,189	32,949
Furniture, fixture and other equipment
Property, Plant and Equipment [Line Items]
Weighted Average Useful Life (in years)		7 years
Property and equipment, gross		$ 22,583	22,153
Office equipment
Property, Plant and Equipment [Line Items]
Weighted Average Useful Life (in years)		7 years
Property and equipment, gross		$ 18,315	19,039
Land improvements
Property, Plant and Equipment [Line Items]
Weighted Average Useful Life (in years)		18 years
Property and equipment, gross		$ 2,142	2,137
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross		1,339	1,339
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross		51,477	51,502
Minsk, Belarus | Buildings
Property, Plant and Equipment [Line Items]
Leased building, before accumulated depreciation		5,900	3,600
Leased building, accumulated depreciation		1,900	300
Depreciation expense		500	100	100
Ukraine
Property, Plant and Equipment [Line Items]
Total		62,653	$ 70,183	$ 78,289
Ukraine | Computer hardware
Property, Plant and Equipment [Line Items]
Total		5,900
Ukraine | Buildings
Property, Plant and Equipment [Line Items]
Total		62,700
Ukraine | Leasehold improvements
Property, Plant and Equipment [Line Items]
Total		1,100
Ukraine | Furniture, fixture and other equipment
Property, Plant and Equipment [Line Items]
Total		4,200
Ukraine | Construction in progress
Property, Plant and Equipment [Line Items]
Total		$ 51,500
Payments to acquire an office building	$ 50,100

ACCRUED EXPENSES AND OTHER CU_3

ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Schedule of Components of Accrued expenses and other current liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Payables and Accruals [Abstract]
Value added taxes payable	$ 39,852	$ 47,433
Deferred revenue	27,988	36,036
Contingent consideration, current (Note 5)	9,650	18,008
Other current liabilities and accrued expenses	47,333	52,862
Total	$ 124,823	$ 154,339

LEASES (Narrative) (Details)

LEASES (Narrative) (Details) $ in Millions	Dec. 31, 2023 USD ($)
Lessee, Lease, Description [Line Items]
Commitments related to operating lease agreements that have not yet commenced	$ 9.9
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term	1 month 6 days
Lease term of lease agreements that have not yet commenced	6 months
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term	8 years 1 month 6 days
Lease term of lease agreements that have not yet commenced	7 years

LEASES (Schedule of Components

LEASES (Schedule of Components of Lease Expenses) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Lease, Cost [Line Items]
Total lease cost	$ 66,582	$ 67,436	$ 77,947
Selling, general and administrative expenses
Lease, Cost [Line Items]
Operating lease cost	47,824	51,775	67,144
Variable lease cost	13,156	10,372	8,555
Short-term lease cost	$ 5,602	$ 5,289	$ 2,248

LEASES (Schedule of Supplementa

LEASES (Schedule of Supplemental Cash Flow Information) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows used for operating leases	$ 52,373	$ 54,344
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	18,063	35,048
Non-cash net increase/ (decrease) due to lease modifications:
Operating lease right-of-use assets	7,595	(2,934)
Operating lease liabilities	$ 9,198	$ (4,254)

LEASES (Schedule of Weighted Av

LEASES (Schedule of Weighted Average Remaining Lease Term and Discount Rate) (Details)	Dec. 31, 2023	Dec. 31, 2022
Weighted average remaining lease term, in years:
Operating leases	5 years	5 years 4 months 24 days
Weighted average discount rate:
Operating leases	4.10%	2.80%

LEASES (Schedule of Maturity of

LEASES (Schedule of Maturity of Operating Lease Liabilities) (Details) $ in Thousands	Dec. 31, 2023 USD ($)
Leases [Abstract]
2024	$ 41,495
2025	34,529
2026	28,579
2027	19,173
2028	16,477
Thereafter	19,732
Total lease payments	159,985
Less: imputed interest	(14,166)
Total	$ 145,819

DEBT (Narrative) (Details)

DEBT (Narrative) (Details)	Oct. 21, 2021 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Oct. 21, 2021 GBP (£)
Debt Instrument [Line Items]
Long-term debt		$ 26,126,000	$ 27,693,000
Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 700,000,000	$ 700,000,000	$ 700,000,000	£ 150,000,000
Additional potential borrowing capacity (up to)	$ 1,000,000,000
Revolving Credit Facility | Overnight Bank Funding Rate | Line of Credit
Debt Instrument [Line Items]
Variable interest rate spread	0.50%
Revolving Credit Facility | SOFR | Line of Credit
Debt Instrument [Line Items]
Variable interest rate spread	1%

DEBT (Schedule of Outstanding D

DEBT (Schedule of Outstanding Debt And Borrowing Capacity) (Details) - Revolving Credit Facility - Line of Credit	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Oct. 21, 2021 USD ($)	Oct. 21, 2021 GBP (£)
Debt Instrument [Line Items]
Outstanding debt	$ 25,000,000	$ 25,000,000
Interest rate	6.30%	5.20%
Available borrowing capacity	$ 675,000,000	$ 675,000,000
Maximum borrowing capacity	$ 700,000,000	$ 700,000,000	$ 700,000,000	£ 150,000,000

PENSION AND POSTRETIREMENT BE_3

PENSION AND POSTRETIREMENT BENEFITS (Defined Contribution Pension Plans) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Retirement Benefits [Abstract]
Defined contribution plan expenses recognized	$ 31.4	$ 29	$ 21.3

PENSION AND POSTRETIREMENT BE_4

PENSION AND POSTRETIREMENT BENEFITS (Defined Benefit Pension Plans) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Retirement Benefits [Abstract]
Defined benefit plan expenses recognized	$ 9.4	$ 8.3	$ 5.5

PENSION AND POSTRETIREMENT BE_5

PENSION AND POSTRETIREMENT BENEFITS (Schedule of Defined Benefit Plans Disclosures) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Unfunded status	$ 15,910	$ 10,625
Accrued compensation and benefits expenses
Defined Benefit Plan Disclosure [Line Items]
Unfunded status	998	832
Other noncurrent liabilities
Defined Benefit Plan Disclosure [Line Items]
Unfunded status	$ 14,912	$ 9,793

COST OPTIMIZATION PROGRAM (Acti

COST OPTIMIZATION PROGRAM (Activity in Restructuring Reserves) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
Restructuring Reserve [Roll Forward]
Balance at December 31, 2022	$ 0
Charges	28,990
Payments Made	(22,024)
Balance at December 31. 2023	$ 6,966

COST OPTIMIZATION PROGRAM (Narr

COST OPTIMIZATION PROGRAM (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
Restructuring Cost and Reserve [Line Items]
Charges	$ 28,990
Expected cost remaining	2,300
Facility Closing
Restructuring Cost and Reserve [Line Items]
Charges	$ 6,100

REVENUES (Narrative) (Details)

REVENUES (Narrative) (Details)	12 Months Ended
	Dec. 31, 2023 business
Revenue from Contract with Customer [Abstract]
Number of geographic markets	4

REVENUES (Schedule of Disaggreg

REVENUES (Schedule of Disaggregation of Revenues) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Revenues	$ 4,690,540	$ 4,824,698	$ 3,758,144
Revenues from performance obligations satisfied in previous period	5,800	7,500	18,700
Transferred over time
Disaggregation of Revenue [Line Items]
Revenues	4,674,989	4,810,148	3,747,565
Transferred at a point of time
Disaggregation of Revenue [Line Items]
Revenues	15,551	14,550	10,579
Time-and-material
Disaggregation of Revenue [Line Items]
Revenues	4,082,503	4,239,580	3,209,747
Fixed-price
Disaggregation of Revenue [Line Items]
Revenues	579,230	560,467	529,396
Licensing and other revenues
Disaggregation of Revenue [Line Items]
Revenues	28,807	24,651	19,001
Travel & Consumer
Disaggregation of Revenue [Line Items]
Revenues	1,072,950	1,092,224	741,128
Financial Services
Disaggregation of Revenue [Line Items]
Revenues	1,018,433	1,026,686	848,370
Business Information & Media
Disaggregation of Revenue [Line Items]
Revenues	753,981	809,952	666,941
Software & Hi-Tech
Disaggregation of Revenue [Line Items]
Revenues	707,720	793,261	664,597
Life Sciences & Healthcare
Disaggregation of Revenue [Line Items]
Revenues	489,914	507,367	391,309
Emerging Verticals
Disaggregation of Revenue [Line Items]
Revenues	647,542	595,208	445,799
North America
Disaggregation of Revenue [Line Items]
Revenues	2,765,022	2,898,554	2,242,248
North America | Transferred over time
Disaggregation of Revenue [Line Items]
Revenues	2,751,937	2,888,342	2,232,308
North America | Transferred at a point of time
Disaggregation of Revenue [Line Items]
Revenues	13,085	10,212	9,940
North America | Time-and-material
Disaggregation of Revenue [Line Items]
Revenues	2,457,545	2,615,213	1,981,696
North America | Fixed-price
Disaggregation of Revenue [Line Items]
Revenues	283,183	263,603	244,249
North America | Licensing and other revenues
Disaggregation of Revenue [Line Items]
Revenues	24,294	19,738	16,303
North America | Travel & Consumer
Disaggregation of Revenue [Line Items]
Revenues	472,350	505,227	359,306
North America | Financial Services
Disaggregation of Revenue [Line Items]
Revenues	538,837	522,970	361,611
North America | Business Information & Media
Disaggregation of Revenue [Line Items]
Revenues	429,800	467,664	389,613
North America | Software & Hi-Tech
Disaggregation of Revenue [Line Items]
Revenues	552,492	655,122	559,707
North America | Life Sciences & Healthcare
Disaggregation of Revenue [Line Items]
Revenues	429,245	454,102	340,706
North America | Emerging Verticals
Disaggregation of Revenue [Line Items]
Revenues	342,298	293,469	231,305
Europe
Disaggregation of Revenue [Line Items]
Revenues	1,909,443	1,853,056	1,350,484
Europe | Transferred over time
Disaggregation of Revenue [Line Items]
Revenues	1,907,010	1,849,011	1,349,956
Europe | Transferred at a point of time
Disaggregation of Revenue [Line Items]
Revenues	2,433	4,045	528
Europe | Time-and-material
Disaggregation of Revenue [Line Items]
Revenues	1,613,790	1,578,786	1,145,606
Europe | Fixed-price
Disaggregation of Revenue [Line Items]
Revenues	291,174	269,669	202,436
Europe | Licensing and other revenues
Disaggregation of Revenue [Line Items]
Revenues	4,479	4,601	2,442
Europe | Travel & Consumer
Disaggregation of Revenue [Line Items]
Revenues	596,830	571,437	354,041
Europe | Financial Services
Disaggregation of Revenue [Line Items]
Revenues	472,146	460,858	372,394
Europe | Business Information & Media
Disaggregation of Revenue [Line Items]
Revenues	323,985	341,344	275,502
Europe | Software & Hi-Tech
Disaggregation of Revenue [Line Items]
Revenues	153,683	136,273	102,270
Europe | Life Sciences & Healthcare
Disaggregation of Revenue [Line Items]
Revenues	60,549	52,465	49,900
Europe | Emerging Verticals
Disaggregation of Revenue [Line Items]
Revenues	302,250	290,679	196,377
Russia
Disaggregation of Revenue [Line Items]
Revenues	16,075	73,088	165,412
Russia | Transferred over time
Disaggregation of Revenue [Line Items]
Revenues	16,042	72,795	165,301
Russia | Transferred at a point of time
Disaggregation of Revenue [Line Items]
Revenues	33	293	111
Russia | Time-and-material
Disaggregation of Revenue [Line Items]
Revenues	11,168	45,581	82,445
Russia | Fixed-price
Disaggregation of Revenue [Line Items]
Revenues	4,873	27,195	82,711
Russia | Licensing and other revenues
Disaggregation of Revenue [Line Items]
Revenues	34	312	256
Russia | Travel & Consumer
Disaggregation of Revenue [Line Items]
Revenues	3,770	15,560	27,781
Russia | Financial Services
Disaggregation of Revenue [Line Items]
Revenues	7,450	42,858	114,365
Russia | Business Information & Media
Disaggregation of Revenue [Line Items]
Revenues	196	944	1,826
Russia | Software & Hi-Tech
Disaggregation of Revenue [Line Items]
Revenues	1,545	1,866	2,620
Russia | Life Sciences & Healthcare
Disaggregation of Revenue [Line Items]
Revenues	120	800	703
Russia | Emerging Verticals
Disaggregation of Revenue [Line Items]
Revenues	2,994	11,060	18,117
Americas
Disaggregation of Revenue [Line Items]
Revenues	2,742,662	2,887,204	2,226,830
Americas | North America
Disaggregation of Revenue [Line Items]
Revenues	2,645,174	2,792,156	2,145,163
Americas | Europe
Disaggregation of Revenue [Line Items]
Revenues	96,857	92,244	77,351
Americas | Russia
Disaggregation of Revenue [Line Items]
Revenues	631	2,804	4,316
EMEA
Disaggregation of Revenue [Line Items]
Revenues	1,822,782	1,737,919	1,259,717
EMEA | North America
Disaggregation of Revenue [Line Items]
Revenues	116,054	95,706	87,121
EMEA | Europe
Disaggregation of Revenue [Line Items]
Revenues	1,706,728	1,642,114	1,172,267
EMEA | Russia
Disaggregation of Revenue [Line Items]
Revenues	0	99	329
APAC
Disaggregation of Revenue [Line Items]
Revenues	102,138	120,370	103,559
APAC | North America
Disaggregation of Revenue [Line Items]
Revenues	3,248	3,837	3,224
APAC | Europe
Disaggregation of Revenue [Line Items]
Revenues	98,890	116,533	100,335
APAC | Russia
Disaggregation of Revenue [Line Items]
Revenues	0	0	0
CEE
Disaggregation of Revenue [Line Items]
Revenues	22,958	79,205	168,038
CEE | North America
Disaggregation of Revenue [Line Items]
Revenues	546	6,855	6,740
CEE | Europe
Disaggregation of Revenue [Line Items]
Revenues	6,968	2,165	531
CEE | Russia
Disaggregation of Revenue [Line Items]
Revenues	$ 15,444	$ 70,185	$ 160,767

REVENUES (Schedule of Timing of

REVENUES (Schedule of Timing of Revenue Recognition) (Details) - Fixed-price $ in Thousands	Dec. 31, 2023 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Estimated revenues expected to be recognized in the future related to performance obligations	$ 7,691
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Estimated revenues expected to be recognized in the future related to performance obligations	$ 6,678
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Estimated revenues expected to be recognized in the future related to performance obligations	$ 810
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Estimated revenues expected to be recognized in the future related to performance obligations	$ 203
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Estimated revenues expected to be recognized in the future related to performance obligations	$ 0
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year

REVENUES (Schedule of Contract

REVENUES (Schedule of Contract Assets and Liabilities) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Change in Contract with Customer, Asset and Liability [Abstract]
Revenues recognized	$ 30,600	$ 35,400
Trade receivables and contract assets
Change in Contract with Customer, Asset and Liability [Abstract]
Contract assets	24,309	11,490
Accrued expenses and other current liabilities
Change in Contract with Customer, Asset and Liability [Abstract]
Contract liabilities	27,988	36,036
Other noncurrent liabilities
Change in Contract with Customer, Asset and Liability [Abstract]
Contract liabilities	$ 951	$ 42

STOCKHOLDERS_ EQUITY (Schedule

STOCKHOLDERS’ EQUITY (Schedule of Components of Stock-Based Compensation Expenses) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 147,730	$ 99,909	$ 111,655
Cost of revenues (exclusive of depreciation and amortization)
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	68,797	47,470	51,580
Selling, general and administrative expenses
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 78,933	$ 52,439	$ 60,075

STOCKHOLDERS_ EQUITY (Equity Pl

STOCKHOLDERS’ EQUITY (Equity Plans) (Details) - shares shares in Thousands		12 Months Ended
	Jan. 11, 2012	Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period	10 years
Company Personnel
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for issuance (in shares)		2,962
Non-Employee Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for issuance (in shares)		509
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for issuance (in shares)		607
Maximum salary contribution, percent		10%
Offering period		6 months
ESPP purchase price of common stock, percent of market price		85%

STOCKHOLDERS_ EQUITY (Schedul_2

STOCKHOLDERS’ EQUITY (Schedule of Stock Option Activity) (Details) - Stock Options - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Number of Options
Beginning balance (in shares)	1,923,000	2,318,000	2,772,000
Options granted (in shares)	114,000	133,000	94,000
Options exercised (in shares)	(397,000)	(514,000)	(536,000)
Options forfeited (in shares)	(6,000)	(11,000)	(12,000)
Options expired (in shares)	(5,000)	(3,000)
Ending balance (in shares)	1,629,000	1,923,000	2,318,000
Options vested and exercisable number of options (in shares)	1,348,000
Options expected to vest number of options (in shares)	268,000
Weighted Average Exercise Price
Options outstanding at beginning of period (in dollars per share)	$ 98.92	$ 77.79	$ 61.71
Options granted (in dollars per share)	295.73	277.85	410.03
Options exercised (in dollars per share)	39.01	44.02	49.13
Options forfeited (in dollars per share)	316.91	350.19	248.74
Options expired (in dollars per share)	340.13	128.11
Options outstanding at end of period (in dollars per share)	125.88	$ 98.92	$ 77.79
Options vested and exercisable weighted average price (in dollars per share)	91.33
Options expected to vest weighted average price (in dollars per share)	$ 291.21
Aggregate Intrinsic Value
Options outstanding, beginning of period	$ 447,503	$ 1,369,132	$ 822,152
Options outstanding, end of period	289,552	$ 447,503	$ 1,369,132
Options vested and exercisable, aggregate intrinsic value	282,764
Options expected to vest, aggregate intrinsic value	$ 6,609
Weighted Average Remaining Contractual Term (in years)
Options outstanding, weighted average remaining contractual term	3 years 4 months 24 days
Options vested and exercisable, weighted average remaining contractual term	2 years 4 months 24 days
Expected to vest, weighted average remaining contractual term	8 years 3 months 18 days

STOCKHOLDERS_ EQUITY (Schedul_3

STOCKHOLDERS’ EQUITY (Schedule of Black Scholes Valuation Model Assumptions) (Details)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	50.20%	46.70%	35.30%
Expected term (in years)	6 years 2 months 23 days	6 years 2 months 26 days	6 years 2 months 26 days
Risk-free interest rate	3.60%	2.60%	1.20%
Expected dividends	0%	0%	0%
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	48%	86.80%	23.10%
Expected term (in years)	6 months	6 months	6 months
Risk-free interest rate	5.30%	3%	0.10%
Expected dividends	0%	0%	0%

STOCKHOLDERS_ EQUITY (Stock Opt

STOCKHOLDERS’ EQUITY (Stock Options Additional Information) (Details) - Stock Options - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant-date fair value (in dollars per share)	$ 156.11	$ 134.29	$ 149.26
Total intrinsic value of options exercised	$ 89.8	$ 154.4	$ 251.9
Vesting period (in years)	4 years
Unrecognized compensation cost net of estimated forfeitures	$ 22.4
Unrecognized compensation cost, period for recognition	2 years 2 months 12 days

STOCKHOLDERS_ EQUITY (Schedul_4

STOCKHOLDERS’ EQUITY (Schedule of Restricted Stock and Restricted Stock Units Activity) (Details) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Service Period | Equity Classified Award | Restricted stock
Number of Shares
Unvested awards outstanding at period start (in shares)	0	9	9
Awards granted (in shares)	0	0	0
Awards modified (in shares)	0	0	0
Awards vested (in shares)	0	(9)	0
Awards forfeited (in shares)	0	0	0
Unvested awards outstanding at period end (in shares)	0	0	9
Weighted Average Grant Date Fair Value Per Share
Unvested awards outstanding at period start (in dollars per share)	$ 0	$ 167.18	$ 167.18
Awards granted (in dollars per share)	0	0	0
Awards modified (in dollars per share)	0	0	0
Awards vested (in dollars per share)	0	167.18	0
Awards forfeited (in dollars per share)	0	0	0
Unvested awards outstanding at period end (in dollars per share)	$ 0	$ 0	$ 167.18
Service Period | Equity Classified Award | Equity-Settled Award | Restricted stock units
Number of Shares
Unvested awards outstanding at period start (in shares)	916	576	686
Awards granted (in shares)	607	655	238
Awards modified (in shares)	(15)	(3)	0
Awards vested (in shares)	(329)	(244)	(308)
Awards forfeited (in shares)	(105)	(68)	(40)
Unvested awards outstanding at period end (in shares)	1,074	916	576
Weighted Average Grant Date Fair Value Per Share
Unvested awards outstanding at period start (in dollars per share)	$ 291.19	$ 277.38	$ 162.15
Awards granted (in dollars per share)	288.49	287.13	429.41
Awards modified (in dollars per share)	278.52	387.74	0
Awards vested (in dollars per share)	278.25	235.96	139.83
Awards forfeited (in dollars per share)	304.91	328.81	264.48
Unvested awards outstanding at period end (in dollars per share)	$ 292.45	$ 291.19	$ 277.38
Service Period | Liability Classified Award | Cash-Settled Award | Restricted stock units
Number of Shares
Unvested awards outstanding at period start (in shares)	99	112	175
Awards granted (in shares)	36	51	27
Awards modified (in shares)	15	3	0
Awards vested (in shares)	(46)	(56)	(86)
Awards forfeited (in shares)	(6)	(11)	(4)
Unvested awards outstanding at period end (in shares)	98	99	112
Weighted Average Grant Date Fair Value Per Share
Unvested awards outstanding at period start (in dollars per share)	$ 257.74	$ 217.28	$ 141.16
Awards granted (in dollars per share)	298.81	269.60	394.24
Awards modified (in dollars per share)	305.59	220	0
Awards vested (in dollars per share)	242.07	184.96	118.05
Awards forfeited (in dollars per share)	254.82	260.59	210.26
Unvested awards outstanding at period end (in dollars per share)	$ 287.36	$ 257.74	$ 217.28
Performance Targets | Equity Classified Award | Equity-Settled Award | Restricted stock
Number of Shares
Unvested awards outstanding at period start (in shares)	9	9	9
Awards granted (in shares)	0	0	0
Awards vested (in shares)	(9)	0	0
Awards forfeited (in shares)	0	0	0
Unvested awards outstanding at period end (in shares)	0	9	9
Weighted Average Grant Date Fair Value Per Share
Unvested awards outstanding at period start (in dollars per share)	$ 165.87	$ 165.87	$ 165.87
Awards granted (in dollars per share)	0	0	0
Awards vested (in dollars per share)	165.87	0	0
Awards forfeited (in dollars per share)	0	0	0
Unvested awards outstanding at period end (in dollars per share)	$ 0	$ 165.87	$ 165.87
Performance Targets | Equity Classified Award | Equity-Settled Award | Restricted stock units
Number of Shares
Unvested awards outstanding at period start (in shares)	15	23	21
Awards granted (in shares)	6	6	8
Awards vested (in shares)	(7)	(9)	(4)
Awards forfeited (in shares)	(1)	(5)	(2)
Unvested awards outstanding at period end (in shares)	13	15	23
Weighted Average Grant Date Fair Value Per Share
Unvested awards outstanding at period start (in dollars per share)	$ 412.60	$ 339.69	$ 227.16
Awards granted (in dollars per share)	258.19	418.26	574.98
Awards vested (in dollars per share)	229.98	238.96	177.81
Awards forfeited (in dollars per share)	363.93	377.87	334.78
Unvested awards outstanding at period end (in dollars per share)	$ 441.87	$ 412.60	$ 339.69

STOCKHOLDERS_ EQUITY (Schedul_5

STOCKHOLDERS’ EQUITY (Schedule of Fair Value of Restricted Stock and Restricted Stock Units Vested) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Service Period
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of awards vested	$ 107,647	$ 89,738	$ 163,474
Performance Targets
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of awards vested	3,818	2,914	2,215
Equity Classified Award | Service Period | Equity-Settled Award | Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of awards vested	0	3,990	0
Equity Classified Award | Service Period | Equity-Settled Award | Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of awards vested	94,418	69,510	129,527
Equity Classified Award | Performance Targets | Equity-Settled Award | Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of awards vested	2,237	0	0
Equity Classified Award | Performance Targets | Equity-Settled Award | Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of awards vested	1,581	2,914	2,215
Liability Classified Award | Service Period | Cash-Settled Award | Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of awards vested	$ 13,229	$ 16,238	$ 33,947

STOCKHOLDERS_ EQUITY (Restricte

STOCKHOLDERS’ EQUITY (Restricted Stock and Restricted Stock Units Additional Information) (Details) - Restricted stock units - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Equity Classified Award | Service Period | Equity-Settled Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 215.7
Unrecognized compensation cost, period for recognition	2 years 7 months 6 days
Equity Classified Award | Performance Targets | Equity-Settled Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 3.1
Unrecognized compensation cost, period for recognition	2 years
Liability Classified Award | Service Period | Cash-Settled Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 18.5
Unrecognized compensation cost, period for recognition	2 years 4 months 24 days
Liability Classified Award | Service Period | Cash-Settled Award | Accrued compensation and benefits expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Liability associated with stock-based awards current	$ 8.7	$ 10.2

STOCKHOLDERS_ EQUITY (Employee

STOCKHOLDERS’ EQUITY (Employee Stock Purchase Plan Additional Information) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share price (in dollars per share)	$ 248.23	$ 315.60	$ 659.65
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Offering period	6 months
Weighted average grant-date fair value (in dollars per share)	$ 69.74	$ 119.76	$ 141.86
ESPP purchase of common stock (in shares)	173	120	0
ESPP stock based compensation expense	$ 12.6	$ 13.9	$ 1.2
Unrecognized compensation cost	$ 3.7
Unrecognized compensation cost, period for recognition	3 months 29 days

STOCKHOLDERS_ EQUITY (Commitmen

STOCKHOLDERS’ EQUITY (Commitments for Future Equity Awards Additional Information) (Details) - Emakina shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity granted | $	$ 15.5
Restricted stock units | Equity Classified Award | Performance Targets
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued in period (in shares) | shares	10

STOCKHOLDERS_ EQUITY (Share Rep

STOCKHOLDERS’ EQUITY (Share Repurchases Additional Information) (Details) - USD ($) shares in Thousands		12 Months Ended
	Feb. 13, 2023	Dec. 31, 2023
Share-Based Payment Arrangement [Abstract]
Authorized repurchase program, amount	$ 500,000,000
Share repurchase program term	24 months
Shares acquired during period (in shares)		686
Value of shares acquired		$ 164,900,000
Stock repurchases, remaining balance		$ 335,100,000

INCOME TAXES (Schedule of Incom

INCOME TAXES (Schedule of Income Before Provision for Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income before provision for income taxes:
United States	$ 210,875	$ 78,564	$ 128,498
Foreign	325,710	428,694	404,894
Income before provision for income taxes	$ 536,585	$ 507,258	$ 533,392

INCOME TAXES (Schedule of Provi

INCOME TAXES (Schedule of Provision for Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current
Federal	$ 54,763	$ 20,044	$ 22,742
State	15,922	10,116	6,735
Foreign	86,012	99,847	69,162
Deferred
Federal	(20,519)	(26,379)	(40,421)
State	(5,206)	(3,483)	(2,576)
Foreign	(11,470)	(12,303)	(3,902)
Total	$ 119,502	$ 87,842	$ 51,740

INCOME TAXES (U.S. Tax Act Effe

INCOME TAXES (U.S. Tax Act Effect) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2017
Schedule of Change in Tax Legislation [Line Items]
Accumulated undistributed foreign earnings indefinitely reinvested	$ 1,563
U.S. Tax Cuts and Jobs Act
Schedule of Change in Tax Legislation [Line Items]
Income tax rate on foreign cash and certain other net current assets		15.50%
Income tax rate on remaining earnings		8%
Transition tax for accumulated foreign earnings	$ 25.6

INCOME TAXES (Effective Tax Rat

INCOME TAXES (Effective Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Provision for income taxes at federal statutory rate	$ 112,690	$ 106,514	$ 112,016
Increase/(decrease) in taxes resulting from:
GILTI and BEAT U.S. taxes	391	355	229
Excess tax benefits relating to stock-based compensation	(19,829)	(35,119)	(71,628)
Foreign tax expense and tax rate differential	5,208	4,902	(206)
Effect of permanent differences	4,210	7,812	4,756
State taxes, net of federal benefit	12,347	9,323	9,192
Stock-based compensation expense	5,869	3,869	1,102
Impact of election to change entity classification	(2,109)	(8,264)	0
Tax credits	(1,824)	(2,876)	(4,100)
Other	2,549	1,326	379
Total	$ 119,502	$ 87,842	$ 51,740
Effective tax rate	22.30%	17.30%	9.70%
Effect of change in enacted tax rate		$ 2,400
Foreign losses	$ 3,200
Excess tax benefit	$ 19,800	$ 35,100	$ 71,600

INCOME TAXES (Deferred Income T

INCOME TAXES (Deferred Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Deferred tax assets:
Property and equipment	$ 13,359	$ 11,587
Accrued expenses	77,757	87,816
Accrued sales discounts	11,148	9,185
Stock-based compensation	36,488	33,078
Operating lease liabilities	40,549	43,662
R&D capitalization	77,601	36,915
Deferred consideration	13,762	14,030
Foreign currency exchange	2,688	11,284
Other	27,149	19,955
Deferred tax assets	300,501	267,512
Less: valuation allowance	(7,622)	(6,728)
Total deferred tax assets	292,879	260,784
Deferred tax liabilities:
Property and equipment	13,590	15,324
Intangible assets	27,914	24,523
Operating lease right-of-use assets	39,551	42,211
U.S. taxation of foreign subsidiaries	13,955	11,465
Other	8,711	7,232
Total deferred tax liabilities	103,721	100,755
Net deferred tax assets	189,158	160,029
Business Acquisitions
Deferred tax assets:
Stock-based compensation	$ 3,900	4,600
Business Acquisitions | Minimum
Deferred tax liabilities:
Amortization period of stock-based compensation for tax	10 years
Business Acquisitions | Maximum
Deferred tax liabilities:
Amortization period of stock-based compensation for tax	15 years
Other noncurrent liabilities
Deferred tax liabilities:
Deferred income tax liabilities, net	$ 8,700	$ 12,800

INCOME TAXES (Operating Loss Ca

INCOME TAXES (Operating Loss Carryforwards) (Details) $ in Millions	Dec. 31, 2023 USD ($)
Domestic
Operating Loss Carryforwards [Line Items]
Net operating loss	$ 1.8
Foreign
Operating Loss Carryforwards [Line Items]
Net operating loss	54.8
NOL not subject to expiration	8.9
Operating loss carryforwards, valuation allowance	$ 35

INCOME TAXES (Unrecognized Tax

INCOME TAXES (Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Contingency [Line Items]
Unrecognized tax benefit	$ 11,471	$ 7,865	$ 8,155	$ 3,317
Interest and penalties from unrecognized tax benefits	1,500	700
Income Taxes Payable, Noncurrent
Income Tax Contingency [Line Items]
Unrecognized tax benefit	$ 11,500	$ 7,900

INCOME TAXES (Schedule of Unrec

INCOME TAXES (Schedule of Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning Balance	$ 7,865	$ 8,155	$ 3,317
Increases in tax positions from current year	3,307	4,739	5,310
Increases in tax positions from acquisitions	0	393	0
Increases in tax positions from prior years	716	2,447	1,350
Decreases in tax positions from prior years	(47)	(6,945)	0
Decreases due to lapse of statute of limitations	(438)	(1,121)	(1,298)
Increase resulting from foreign currency translation	68	197
Decrease resulting from foreign currency translation			(524)
Ending Balance	$ 11,471	$ 7,865	$ 8,155

EARNINGS PER SHARE (Details)

EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Numerator for basic and diluted earnings per share:
Net income	$ 417,083	$ 419,416	$ 481,652
Numerator for basic earnings per share	417,083	419,416	481,652
Numerator for diluted earnings per share	$ 417,083	$ 419,416	$ 481,652
Denominator:
Weighted average common shares for basic earnings per share (in shares)	57,829	57,291	56,511
Net effect of dilutive stock options, restricted stock units, restricted stock awards and stock issuable under the ESPP (in shares)	1,256	1,878	2,553
Weighted average common shares for diluted earnings per share	59,085	59,169	59,064
Net Income per share:
Basic (in dollars per share)	$ 7.21	$ 7.32	$ 8.52
Diluted (in dollars per share)	$ 7.06	$ 7.09	$ 8.15
Anti-dilutive stock excluded from the calculation (in shares)	415	264	32

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Ukraine Humanitarian Commitment) (Details) - USD ($)	Mar. 31, 2023	Dec. 31, 2023	Mar. 04, 2022
Other Commitments [Line Items]
Commitment		$ 9,900,000
Deferred consideration		51,400,000
Deferred consideration in 2024		18,300,000
Deferred consideration in 2025		16,600,000
Deferred consideration in 2026		16,500,000
Cloud Services
Other Commitments [Line Items]
Contractual term	5 years
Total commitment amount	$ 75,000,000
Contractual commitment, percent	20%
Humanitarian Commitment
Other Commitments [Line Items]
Commitment		$ 37,800,000
Ukraine | Humanitarian Commitment
Other Commitments [Line Items]
Commitment			$ 100,000,000

SEGMENT INFORMATION (Revenues f

SEGMENT INFORMATION (Revenues from External Customers and Operating Profit Before Unallocated Expenses) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Revenues	$ 4,690,540	$ 4,824,698	$ 3,758,144
Total segment operating profit	501,239	572,966	542,316
Operating Segments
Segment Reporting Information [Line Items]
Total segment operating profit	765,713	799,228	729,072
North America
Segment Reporting Information [Line Items]
Revenues	2,765,022	2,898,554	2,242,248
North America | Operating Segments
Segment Reporting Information [Line Items]
Total segment operating profit	520,945	589,412	462,798
Europe
Segment Reporting Information [Line Items]
Revenues	1,909,443	1,853,056	1,350,484
Europe | Operating Segments
Segment Reporting Information [Line Items]
Total segment operating profit	250,634	223,276	233,727
Russia
Segment Reporting Information [Line Items]
Revenues	16,075	73,088	165,412
Russia | Operating Segments
Segment Reporting Information [Line Items]
Total segment operating profit	$ (5,866)	$ (13,460)	$ 32,547

SEGMENT INFORMATION (Reconcilia

SEGMENT INFORMATION (Reconciliation of Segment Operating Profit to Consolidated Income Before Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segment operating profit	$ 501,239	$ 572,966	$ 542,316
Stock-based compensation expense	(147,730)	(99,909)	(111,655)
Amortization of purchased intangibles	(22,717)	(22,223)	(17,646)
Loss on sale of business	(25,922)	0	0
Interest and other income/(loss), net	51,124	10,025	(1,727)
Foreign exchange loss	(15,778)	(75,733)	(7,197)
Income before provision for income taxes	536,585	507,258	533,392
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segment operating profit	765,713	799,228	729,072
Unallocated Amounts
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Stock-based compensation expense	(147,730)	(99,909)	(111,655)
Amortization of purchased intangibles	(22,717)	(22,223)	(17,646)
Other acquisition-related expenses	(2,723)	(1,537)	(6,397)
Loss on sale of business	(25,922)	0	0
Other unallocated costs	$ (65,382)	$ (102,593)	$ (51,058)

SEGMENT INFORMATION (Physical L

SEGMENT INFORMATION (Physical Locations and Values of Long-Lived Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	$ 235,053	$ 273,348	$ 236,214
Ukraine
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	62,653	70,183	78,289
United States
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	42,510	68,804	14,843
Belarus
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	49,875	57,311	75,422
Poland
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	15,057	14,685	8,240
Hungary
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	6,683	8,552	5,339
India
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	12,735	8,506	9,459
Russia
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	0	0	16,611
Other
Long-Lived Assets by Geographical Areas [Line Items]
Long-lived assets	$ 45,540	$ 45,307	$ 28,011

SEGMENT INFORMATION (Revenues b

SEGMENT INFORMATION (Revenues by Customer Location) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 4,690,540	$ 4,824,698	$ 3,758,144
United States
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	2,633,730	2,761,050	2,125,301
United Kingdom
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	585,172	619,305	474,941
Switzerland
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	367,121	323,424	271,208
Netherlands
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	236,292	215,444	154,816
Germany
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	178,492	161,758	113,727
Canada
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	97,983	114,910	96,646
Russia
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	13,290	64,745	155,186
Other locations
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 578,460	$ 564,062	$ 366,319

ACCUMULATED OTHER COMPREHENSI_3

ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance, beginning of period	$ 3,003,010	$ 2,495,837	$ 1,983,018
Balance, end of period	3,471,470	3,003,010	2,495,837
Accumulated other comprehensive loss
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance, beginning of period	(95,321)	(54,207)	(25,512)
Balance, end of period	(39,040)	(95,321)	(54,207)
Foreign currency translation
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance, beginning of period	(101,780)	(52,747)	(28,168)
Foreign currency translation	45,035	(45,295)	(29,323)
Net loss reclassified into Loss on sale of business	23,931	0	0
Income tax benefit/(expense)	(10,787)	(3,738)	4,744
Other comprehensive income/(loss)	58,179	(49,033)	(24,579)
Balance, end of period	(43,601)	(101,780)	(52,747)
Cash flow hedging instruments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance, beginning of period	8,306	(3,417)	3,642
Income tax benefit/(expense)	90	(3,442)	2,073
Unrealized gain/(loss) in fair value	25,352	(49,233)	(13,781)
Net (gain)/ loss reclassified into Cost of revenues (exclusive of depreciation and amortization)	(25,695)	20,331	4,649
Net (gain)/ loss reclassified into Foreign exchange loss	(234)	44,067	0
Other comprehensive income/(loss)	(487)	11,723	(7,059)
Balance, end of period	7,819	8,306	(3,417)
Defined benefit plans
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance, beginning of period	(1,847)	1,957	(986)
Income tax benefit/(expense)	445	1,088	(862)
Other comprehensive income/(loss)	(1,411)	(3,804)	2,943
Balance, end of period	(3,258)	(1,847)	1,957
Actuarial (losses)/gains
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Net (gain)/ loss reclassified into Cost of revenues (exclusive of depreciation and amortization)	$ (1,856)	$ (4,892)	$ 3,805

VALUATION AND QUALIFYING ACCO_2

VALUATION AND QUALIFYING ACCOUNTS (Valuation and Qualifying Accounts) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Allowance for doubtful accounts for trade receivables and contract assets
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 15,310	$ 5,521	$ 4,886
Additions	3,948	14,419	3,888
Deductions/ Write offs	(7,394)	(4,630)	(3,253)
Balance at End of Year	11,864	15,310	5,521
Valuation allowance on deferred tax assets
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	6,728	4,537	5,485
Additions	2,210	2,191	0
Deductions/ Write offs	(1,316)	0	(948)
Balance at End of Year	$ 7,622	$ 6,728	$ 4,537