REVENUE FROM CONTRACTS WITH CUSTOMERS - Schedule of Client Receivables, Contract Assets and Contract Liabilities (Details) - USD ($) $ in Thousands	Jul. 01, 2023	Dec. 31, 2022
Revenue from Contract with Customer [Abstract]
Client receivables	$ 591,006	$ 559,410
Unbilled revenue	227,680	204,258
Total	818,686	763,668
Less: Allowance for credit losses	(18,040)	(11,278)
Trade receivables and contract assets, net	800,646	752,390
Current deferred revenue	257,396	264,259
Long-term deferred revenue (included in Other long-term liabilities)	29,533	25,795
Customer contract deposits (included in Other current-liabilities)	$ 77,422	$ 91,640