COMMITMENTS AND CONTINGENCIES	9 Months Ended
COMMITMENTS AND CONTINGENCIES	Sep. 30, 2025
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES Legal Proceedings From time to time, Cadence is involved in various disputes and litigation that arise in the ordinary course of business. These include disputes and legal proceedings related to intellectual property, indemnification obligations, mergers and acquisitions, licensing, contracts, customers, products, distribution and other commercial arrangements and employee relations matters. Cadence is also subject from time to time to inquiries, investigations and regulatory proceedings involving governments and regulatory agencies in the jurisdictions in which Cadence operates. At least quarterly, Cadence reviews the status of each significant matter and assesses its potential financial exposure. If the potential loss from any claim or legal proceeding is considered probable and the amount or the range of loss can be estimated, Cadence accrues a liability for the estimated loss. Legal proceedings are subject to uncertainties, and the outcomes are difficult to predict. Because of such uncertainties, accruals are based on Cadence’s judgments using the best information available at the time. As additional information becomes available, Cadence reassesses the potential liability related to pending claims and legal proceedings and may revise estimates. As previously disclosed, Cadence has responded to subpoenas received from BIS in February 2021 and DOJ in November 2023 regarding sales and business activity in China. In December 2024, Cadence began discussions with BIS and DOJ regarding their preliminary findings and a potential resolution and recorded an estimated probable liability based on the facts and circumstances as of December 31, 2024. In June 2025, Cadence, BIS and DOJ started making substantial progress towards reaching a resolution. On July 27, 2025, Cadence reached a settlement with each of BIS and DOJ that resolved matters relating to export violations that took place between 2015 and 2021 primarily involving sales initiated by a Cadence subsidiary of products and services valued at $45.3 million in total over that period to a customer in China, as well as the subsequent transfer of technology involved in those sales to a third party in China, without the requisite authorization from BIS. As part of the settlements, Cadence entered into a plea agreement with the DOJ pursuant to which Cadence agreed to plead guilty to one count of conspiracy to commit export controls violations. In addition, Cadence entered into an administrative settlement agreement with BIS. Both agreements include ongoing audit, compliance and other obligations. Under these agreements, Cadence paid BIS and the DOJ aggregate net penalties and forfeitures of $140.6 million, during the three months ended September 30, 2025. Cadence recorded a charge of $128.5 million in Loss related to contingent liability in its condensed consolidated income statement during the nine months ended September 30, 2025. Other Contingencies Cadence provides its customers with a warranty on sales of hardware products, generally for a 90-day period. Cadence did not incur any significant costs related to warranty obligations during the three and nine months ended September 30, 2025 or September 30, 2024. Cadence’s product license and services agreements typically include a limited indemnification provision for claims from third parties relating to Cadence’s intellectual property. If the potential loss from any indemnification claim is considered probable and the amount or the range of loss can be estimated, Cadence accrues a liability for the estimated loss. Cadence did not incur any material losses from indemnification claims during the three and nine months ended September 30, 2025 or September 30, 2024.