Synopsys (SNPS) 10-K 18 Dec 24 2024 FY Annual report Financial data

COVER

COVER - USD ($) $ in Billions	12 Months Ended
	Oct. 31, 2024	Dec. 16, 2024	Apr. 30, 2024
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Oct. 31, 2024
Current Fiscal Year End Date	--10-31
Document Transition Report	false
Entity File Number	0-19807
Entity Registrant Name	SYNOPSYS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	56-1546236
Entity Address, Address Line One	675 Almanor Avenue
Entity Address, City or Town	Sunnyvale
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94085
City Area Code	650
Local Phone Number	584-5000
Title of 12(b) Security	Common Stock (par value of $0.01 per share)
Trading Symbol	SNPS
Security Exchange Name	NASDAQ
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 Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 67.5
Entity Common Stock, Shares Outstanding		154,578,449
Documents Incorporated by Reference	DOCUMENTS INCORPORATED BY REFERENCE Portions of the registrant’s definitive Proxy Statement relating to the registrant’s 2025 Annual Meeting of Stockholders, scheduled to be held on April 10, 2025, are incorporated by reference into Part III of this Annual Report on Form 10-K where indicated. Except as expressly incorporated by reference, the registrant’s Proxy Statement shall not be deemed to be part of this report.
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY
Entity Central Index Key	0000883241

AUDIT INFORMATION

AUDIT INFORMATION	12 Months Ended
	Oct. 31, 2024
Audit Information [Abstract]
Auditor Name	KPMG LLP
Auditor Firm ID	185
Auditor Location	Santa Clara, CA

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Oct. 31, 2024	Oct. 31, 2023
Current assets:
Cash and cash equivalents	$ 3,896,532	$ 1,433,966
Short-term investments	153,869	151,639
Total cash, cash equivalents and short-term investments	4,050,401	1,585,605
Accounts receivable, net	934,470	856,660
Inventories	361,849	325,590
Prepaid and other current assets	1,122,946	548,115
Current assets of discontinued operations	0	114,654
Total current assets	6,469,666	3,430,624
Property and equipment, net	563,006	549,837
Operating lease right-of-use assets, net	565,917	559,923
Goodwill	3,448,850	3,346,065
Intangible assets, net	195,164	239,577
Deferred income taxes	1,247,258	853,526
Other long-term assets	583,700	444,820
Long-term assets of discontinued operations	0	908,759
Total assets	13,073,561	10,333,131
Current liabilities:
Accounts payable and accrued liabilities	1,163,592	1,059,914
Operating lease liabilities	94,791	79,832
Deferred revenue	1,391,737	1,559,461
Current liabilities of discontinued operations	0	286,244
Total current liabilities	2,650,120	2,985,451
Long-term operating lease liabilities	574,065	579,686
Long-term deferred revenue	340,831	150,827
Long-term debt	15,601	18,078
Other long-term liabilities	469,738	381,531
Long-term liabilities of discontinued operations	0	33,257
Total liabilities	4,050,355	4,148,830
Redeemable non-controlling interest	30,000	31,043
Stockholders’ equity:
Preferred stock, $0.01 par value: 2,000 shares authorized; none outstanding	0	0
Common stock, $0.01 par value: 400,000 shares authorized; 154,112 and 152,053 shares outstanding, respectively	1,541	1,521
Capital in excess of par value	1,211,206	1,276,152
Retained earnings	8,984,105	6,741,699
Treasury stock, at cost: 3,148 and 5,207 shares, respectively	(1,025,770)	(1,675,650)
Accumulated other comprehensive income (loss)	(180,380)	(196,414)
Total Synopsys stockholders’ equity	8,990,702	6,147,308
Non-controlling interest	2,504	5,950
Total stockholders’ equity	8,993,206	6,153,258
Total liabilities, redeemable non-controlling interest and stockholders’ equity	$ 13,073,561	$ 10,333,131

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Oct. 31, 2024	Oct. 31, 2023
Statement of Financial Position [Abstract]
Preferred stock, par value (in USD per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	2,000,000	2,000,000
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in USD per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	400,000,000	400,000,000
Common stock, shares outstanding (in shares)	154,112,000	152,053,000
Treasury stock, shares (in shares)	3,148,000	5,207,000

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Revenue:
Total revenue	$ 6,127,436	$ 5,318,014	$ 4,615,714
Cost of revenue:
Amortization of acquired intangible assets	107,996	45,281	44,674
Total cost of revenue	1,245,289	1,030,843	898,013
Gross margin	4,882,147	4,287,171	3,717,701
Operating expenses:
Research and development	2,082,360	1,849,935	1,589,846
Sales and marketing	859,342	724,934	642,729
General and administrative	568,496	376,677	313,554
Amortization of acquired intangible assets	16,238	9,295	11,637
Restructuring charges	0	53,091	11,221
Total operating expenses	3,526,436	3,013,932	2,568,987
Operating income	1,355,711	1,273,239	1,148,714
Interest and other income (expense), net	158,147	32,231	(45,262)
Income before income taxes	1,513,858	1,305,470	1,103,452
Provision (benefit) for income taxes	99,718	90,188	139,385
Net income from continuing operations	1,414,140	1,215,282	964,067
Income (loss) from discontinued operations, net of income taxes	821,670	2,843	14,369
Net income	2,235,810	1,218,125	978,436
Less: Net income (loss) attributed to non-controlling interest and redeemable non-controlling interest	(27,570)	(11,763)	(6,158)
Net income attributed to Synopsys	2,263,380	1,229,888	984,594
Net income attributed to Synopsys:
Continuing operations	1,441,710	1,227,045	970,225
Discontinued operations	821,670	2,843	14,369
Net income attributed to Synopsys	$ 2,263,380	$ 1,229,888	$ 984,594
Net income per share attributed to Synopsys - basic:
Continuing operations (in USD per share)	$ 9.41	$ 8.06	$ 6.34
Discontinued operations (in USD per share)	5.37	0.02	0.10
Basic net income per share (in USD per share)	14.78	8.08	6.44
Net income per share attributed to Synopsys - diluted:
Continuing operations (in USD per share)	9.25	7.91	6.20
Discontinued operations (in USD per share)	5.26	0.01	0.09
Diluted net income per share (in USD per share)	$ 14.51	$ 7.92	$ 6.29
Shares used in computing per share amounts:
Basic ( in shares)	153,138	152,146	153,002
Diluted (in shares)	155,944	155,195	156,485
Products
Revenue:
Total revenue	$ 5,026,521	$ 4,416,381	$ 3,878,964
Cost of revenue:
Cost of revenue	770,238	697,686	594,007
Time-based products
Revenue:
Total revenue	3,224,299	3,016,256	2,657,724
Upfront products
Revenue:
Total revenue	1,802,222	1,400,125	1,221,240
Maintenance and service
Revenue:
Total revenue	1,100,915	901,633	736,750
Cost of revenue:
Cost of revenue	$ 367,055	$ 287,876	$ 259,332

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 2,235,810	$ 1,218,125	$ 978,436
Other comprehensive income (loss):
Change in foreign currency translation adjustment	8,150	(13,912)	(108,145)
Change in unrealized gains (losses) on available-for-sale securities, net of tax of $0 for periods presented	1,460	1,513	(2,353)
Cash flow hedges:
Deferred gains (losses), net of tax of $(3,052), $(8,940), and $28,416 for fiscal years 2024, 2023 and 2022, respectively	9,625	24,986	(79,069)
Reclassification adjustment on deferred (gains) losses included in net income, net of tax of $(446), $(10,053), and $(1,342) for fiscal years 2024, 2023 and 2022, respectively	(3,201)	25,276	4,894
Other comprehensive income (loss), net of tax effects	16,034	37,863	(184,673)
Comprehensive income	2,251,844	1,255,988	793,763
Less: Net income (loss) attributed to non-controlling interest and redeemable non-controlling interest	(27,570)	(11,763)	(6,158)
Comprehensive income attributed to Synopsys	$ 2,279,414	$ 1,267,751	$ 799,921

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Statement of Comprehensive Income [Abstract]
Change in unrealized gains (losses) on available-for-sale securities, tax	$ 0	$ 0	$ 0
Deferred gains (losses), tax	(3,052)	(8,940)	28,416
Reclassification adjustment on deferred (gains) losses included in net income, tax	$ (446)	$ (10,053)	$ (1,342)

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Total  Synopsys Stockholders’ Equity	Common Stock	Capital in Excess of Par Value	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Non-controlling Interest
Beginning Balance (in shares) at Oct. 31, 2021			153,062
Beginning balance at Oct. 31, 2021	$ 5,298,943	$ 5,295,137	$ 1,531	$ 1,576,363	$ 4,549,713	$ (782,866)	$ (49,604)	$ 3,806
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	983,288	984,594			984,594			(1,306)
Other comprehensive income (loss), net of tax effects	$ (184,673)	(184,673)					(184,673)
Purchases of treasury stock (in shares)	(3,609)		(3,609)
Purchases of treasury stock	$ (1,135,000)	(1,135,000)	$ (36)	36		(1,135,000)
Equity forward contract, net	$ 35,000	35,000		35,000
Common stock issued, net of shares withheld for employee taxes (in shares)	2,922		2,922
Common stock issued, net of shares withheld for employee taxes	$ 63,939	63,939	$ 29	(581,001)		644,911
Stock-based compensation	459,029	456,728		456,728				2,301
Ending Balance (in shares) at Oct. 31, 2022			152,375
Ending balance at Oct. 31, 2022	5,520,526	5,515,725	$ 1,524	1,487,126	5,534,307	(1,272,955)	(234,277)	4,801
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	1,228,127	1,229,888			1,229,888			(1,761)
Other comprehensive income (loss), net of tax effects	$ 37,863	37,863					37,863
Purchases of treasury stock (in shares)	(2,992)		(2,992)
Purchases of treasury stock	$ (1,160,724)	(1,160,724)	$ (30)	30		(1,160,724)
Equity forward contract, net	$ (45,000)	(45,000)		(45,000)
Common stock issued, net of shares withheld for employee taxes (in shares)	2,670		2,670
Common stock issued, net of shares withheld for employee taxes	$ 13,737	13,737	$ 27	(725,211)	(19,108)	758,029
Stock-based compensation	563,292	558,078		558,078				5,214
Adjustments to redeemable non-controlling interest	(3,388)	(3,388)			(3,388)
Recognition of non-controlling interest upon issuance of subsidiary stock	$ (1,175)	1,129		1,129				(2,304)
Ending Balance (in shares) at Oct. 31, 2023	152,053		152,053
Ending balance at Oct. 31, 2023	$ 6,153,258	6,147,308	$ 1,521	1,276,152	6,741,699	(1,675,650)	(196,414)	5,950
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,257,828	2,263,380			2,263,380			(5,552)
Other comprehensive income (loss), net of tax effects	$ 16,034	16,034					16,034
Purchases of treasury stock (in shares)	(74)		(74)
Purchases of treasury stock	$ (45,000)	(45,000)	$ (1)	1		(45,000)
Equity forward contract, net	$ 45,000	45,000		45,000
Common stock issued, net of shares withheld for employee taxes (in shares)	2,133		2,133
Common stock issued, net of shares withheld for employee taxes	$ (104,309)	(104,309)	$ 21	(799,210)		694,880
Stock-based compensation	692,316	687,765		687,765				4,551
Adjustments to redeemable non-controlling interest	(20,974)	(20,974)			(20,974)
Recognition of non-controlling interest upon issuance of subsidiary stock	$ (947)	1,498		1,498				(2,445)
Ending Balance (in shares) at Oct. 31, 2024	154,112		154,112
Ending balance at Oct. 31, 2024	$ 8,993,206	$ 8,990,702	$ 1,541	$ 1,211,206	$ 8,984,105	$ (1,025,770)	$ (180,380)	$ 2,504

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Cash flows from operating activities:
Net income	$ 2,235,810	$ 1,218,125	$ 978,436
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization and depreciation	295,065	247,120	228,405
Reduction of operating lease right-of-use assets	97,273	97,705	89,541
Amortization of capitalized costs to obtain revenue contracts	73,587	82,190	73,026
Stock-based compensation	692,316	563,292	459,029
Allowance for credit losses	19,724	19,932	(3,477)
Gain on sale of strategic investments	(55,077)	0	0
Gain on divestitures, net of transaction costs	(868,830)	0	0
Amortization of bridge financing costs	33,677	0	0
Deferred income taxes	(407,649)	(211,045)	(36,913)
Other	(1,295)	13,295	10,188
Net changes in operating assets and liabilities, net of effects from acquisitions and dispositions:
Accounts receivable	(103,460)	(178,432)	(251,390)
Inventories	(51,449)	(123,752)	1,320
Prepaid and other current assets	(410,432)	(106,396)	(89,983)
Other long-term assets	(168,255)	(100,618)	(15,283)
Accounts payable and accrued liabilities	187,564	170,496	(34,066)
Operating lease liabilities	(96,966)	(73,281)	(85,828)
Income taxes	(73,215)	198,078	1,644
Deferred revenue	8,641	(113,435)	414,251
Net cash provided by operating activities	1,407,029	1,703,274	1,738,900
Cash flows from investing activities:
Proceeds from maturities and sales of short-term investments	138,961	130,435	93,696
Purchases of short-term investments	(136,821)	(131,079)	(97,245)
Proceeds from sales of strategic investments	55,696	8,492	582
Purchases of strategic investments	(1,293)	(435)	(7,000)
Purchases of property and equipment, net	(123,161)	(189,618)	(136,589)
Acquisitions, net of cash acquired	(156,947)	(297,692)	(422,374)
Proceeds from business divestiture, net of cash divested	1,446,578	0	0
Capitalization of software development costs	0	(2,204)	(2,493)
Other	0	0	(1,200)
Net cash provided by (used in) investing activities	1,223,013	(482,101)	(572,623)
Cash flows from financing activities:
Repayment of debt	(2,607)	(2,603)	(76,838)
Payment of bridge financing and term loan costs	(72,265)	0	0
Issuances of common stock	232,212	252,986	237,956
Payments for taxes related to net share settlement of equity awards	(337,541)	(241,408)	(174,005)
Purchase of equity forward contract	0	(45,000)	0
Purchases of treasury stock	0	(1,160,724)	(1,100,000)
Other	(1,096)	(122)	(3,413)
Net cash used in financing activities	(181,297)	(1,196,871)	(1,116,300)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	8,797	(2,979)	(65,296)
Net change in cash, cash equivalents and restricted cash	2,457,542	21,323	(15,319)
Cash, cash equivalents and restricted cash, beginning of year, including cash from discontinued operations	1,441,187	1,419,864	1,435,183
Cash, cash equivalents and restricted cash, end of year, including cash from discontinued operations	3,898,729	1,441,187	1,419,864
Less: Cash, cash equivalents and restricted cash from discontinued operations	0	4,947	4,269
Cash, cash equivalents and restricted cash from continuing operations	3,898,729	1,436,240	1,415,595
Supplemental disclosure of cash flow information:
Cash paid for income taxes during the year:	680,064	97,956	167,768
Interest payments during the year:	814	996	1,258
Non-cash activities:
Purchase of property and equipment included in accounts payable	32,014	21,672	17,857
Conversion of notes receivable to non-marketable equity securities	0	2,000	14,280
Contingent consideration receivable in connection with divestiture	$ 22,202	$ 0	$ 0

Description of Business

Description of Business	12 Months Ended
	Oct. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	Description of Business Synopsys, Inc. (Synopsys, we, our or us) delivers trusted and comprehensive silicon to systems design solutions, from electronic design automation (EDA), including system verification and validation solutions, to silicon intellectual property (IP). We partner closely with semiconductor and systems customers across a wide range of industries to maximize their engineering and research and development capacity. We are catalyzing the era of pervasive intelligence, powering innovation today that ignites the ingenuity of tomorrow. We are a global leader in supplying the mission-critical EDA software that engineers use to design and test integrated circuits (ICs), also known as chips or silicon, and we are pioneering artificial intelligence (AI) driven chip design across the full-stack EDA suite to improve efficiency and accelerate the design, verification testing and manufacturing of advanced digital and analog chips. We provide software and hardware used to validate the electronic systems that incorporate chips and the software that runs on them, including cloud-based digital design flow to boost chip-design development productivity. We also provide technical services and support to help our customers develop advanced chips and electronic systems. These products and services are part of our Design Automation segment. We also offer a broad and comprehensive portfolio of semiconductor IP solutions, which are pre-designed circuits that engineers use as components of larger chip designs to reduce integration risk and speed time to market. Our high quality, silicon-proven semiconductor IP includes logic libraries, embedded memories, analog IP, wired and wireless interface IP, security IP, embedded processors and subsystems. To accelerate IP integration and silicon bring-up, our IP Accelerated initiative provides architecture design expertise, hardening, and signal and power integrity analysis. These products and services are part of our Design IP segment.

Summary of Significant Accounti

Summary of Significant Accounting Policies and Basis of Presentation	12 Months Ended
	Oct. 31, 2024
Accounting Policies [Abstract]
Summary of Significant Accounting Policies and Basis of Presentation	Summary of Significant Accounting Policies and Basis of Presentation Basis of Presentation and Principles of Consolidation. Historically, our fiscal years have been 52- or 53-week periods ending on the Saturday nearest to October 31. Fiscal 2024 was a 53-week year ending on November 2, 2024. Fiscal 2023 and 2022 were 52-week years and ended on October 28, 2023 and October 29, 2022, respectively. For presentation purposes, the consolidated financial statements and accompanying notes refer to the closest calendar month end. We have changed our fiscal year end from the Saturday nearest to October 31 and consisting of 52 or 53 fiscal weeks to a fiscal year end of October 31 each year. The fiscal year change becomes effective with our fiscal 2025, which began on November 3, 2024. Our fiscal quarters will end on January 31, April 30, July 31 and October 31 of each year. The consolidated financial statements include our accounts and the accounts of our wholly and majority-owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. Use of Estimates. To prepare financial statements in conformity with U.S. GAAP, management must make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from these estimates and could have a material impact on our operating results and financial position. Software Integrity Divestiture. On May 5, 2024, we entered into an Equity Purchase Agreement, by and between Synopsys and Sapphire Software Buyer, Inc., an entity controlled by funds affiliated with Clearlake Capital Group, L.P. and Francisco Partners (together, the Sponsors). On September 30, 2024, we completed the previously announced sale of our Software Integrity business to entities controlled by funds affiliated with the Sponsors (the Software Integrity Divestiture). We previously determined that the Software Integrity Divestiture met the criteria to be disclosed as discontinued operations in the second quarter of fiscal 2024 as it represented a significant strategic shift that had a major effect on our operations and financial results. The results of the Software Integrity business, including the gain on divestiture, are presented as discontinued operations in the consolidated statements of income, and as such, have been excluded from both continuing operations and segment results for all periods presented. Further, we reclassified the assets and liabilities of the Software Integrity business as assets and liabilities of discontinued operations in the consolidated balance sheets as of October 31, 2023. The consolidated statements of cash flows are presented on a consolidated basis for both continuing operations and discontinuing operations. We did not allocate any general corporate overhead to the Software Integrity business. Unless otherwise noted, reference within these Notes to Consolidated Financial Statements relates to continuing operations. See Note 3. Discontinued Operations of the Notes to Consolidated Financial Statements in this Annual Report. Segment Reporting. As a result of the Software Integrity Divestiture, we changed our reportable segment from the three reportable segments to the following two reportable segments: (1) Design Automation, which includes our advanced silicon design, verification products and services, system integration products and services, digital, custom and FPGA IC design software, verification software and hardware products, manufacturing software products and other; and (2) Design IP, which includes our interface, foundation, security, and embedded processor IP, IP subsystems, and IP implementation services. Our Chief Operating Decision Maker (CODM), our Chief Executive Officer (CEO) reviews disaggregated segment information, assess performance against our key growth strategies and allocates resources. See Note 20. Segment Disclosure of the Notes to Consolidated Financial Statements in this Annual Report . Prior period segment results and related disclosures have been reclassified to conform to the current period segment presentation. Cash Equivalents and Short-term Investments . We consider all highly liquid investments with original maturities of three months or less at the date of purchase to be cash equivalents. Our investments in debt securities with remaining maturities greater than three months at the date of purchase are designated as available-for-sale securities as we may convert these investments into cash at any time to fund general operations, and included in short-term investments in the consolidated balance sheets. Our debt securities generally have an effective maturity term of less than three years and are carried at fair value, with unrealized gains and losses included in the consolidated balance sheets as a component of accumulated other comprehensive income (loss). For available-for-sale debt securities in an unrealized loss position, we evaluate whether a current expected credit loss exists based on available information relevant to the credit rating of the security, current economic conditions and reasonable and supportable forecasts. The allowance for credit loss is recorded in interest and other income (expense), net, in the consolidated statements of income, not to exceed the amount of the unrealized loss. Any excess unrealized loss other than the credit loss is recognized in accumulated other comprehensive income or loss in the stockholders' equity section of the consolidated balance sheets. The cost of securities sold is based on the specific identification method and realized gains and losses are included in interest and other income (expense), net. See Note 9. Financial Assets and Liabilities of the Notes to Consolidated Financial Statements in this Annual Report. Investments in Equity Securities. We hold equity securities in privately held companies for the promotion of business and strategic objectives. We account for these investments using either the measurement alternative approach when the fair value of the investment is not readily determinable and we do not have the ability to exercise significant influence, or the equity method of accounting when it is determined that we have the ability to exercise significant influence. Investments accounted for using the measurement alternative approach are initially recorded at cost and adjusted for changes in fair value from observable transactions. For investments accounted for using the equity method of accounting, we record our proportionate share of the investee’s income or loss to interest and other income (expense), net, in our consolidated statements of income. These investments are subject to a periodic impairment review, and are included in other long-term assets in the consolidated balance sheets. Accounts Receivable, Net. The balances consist of billed accounts receivable and current portion of unbilled accounts receivable. Trade accounts receivables are recorded at the invoiced amount and do not bear interest. Allowance for Credit Losses. We maintain an allowance for credit losses for expected uncollectible accounts receivable and contract assets, which is recorded as an offset to accounts receivable or contract assets and provisions for credit losses are recorded in general and administrative expense in the consolidated statements of income. The allowance for current expected credit losses is based on a review of customer accounts and considers historical credit loss information that is adjusted for current conditions and reasonable and supportable forecasts. The allowance for credit losses is reviewed on a quarterly basis to assess the adequacy of the allowance. The following table presents the changes in the allowance for credit losses: Fiscal Year Balance at Provisions Write-offs/Adjustments Balance at (in thousands) 2024 $ 50,366 $ 19,286 $ (5,609) $ 64,043 2023 $ 38,586 $ 18,345 $ (6,565) $ 50,366 2022 $ 27,034 $ 11,486 $ 66 $ 38,586 Inventories. Inventories are computed at standard costs which approximate actual costs, on a first-in, first-out basis and valued at the lower of cost or net realizable value. Inventories primarily include components and finished goods for complex emulation and prototyping hardware systems. The valuation process includes a review of the forecasts based upon future demand and market conditions. Inventory provisions are recorded when the costs are determined to be in excess of anticipated demand or considered obsolete. Inventory provisions are impacted by market and economic conditions, technology changes, new product introductions and changes in strategic direction, and require estimates that may include uncertain elements. Fair Values of Financial Instruments. Our cash equivalents, short-term investments and foreign currency contracts are carried at fair value. The fair value of our accounts receivable and accounts payable approximates the carrying amount due to their short duration. Non-marketable equity securities are accounted for using either the measurement alternative or equity method of accounting. We perform periodic impairment analysis on these non-marketable equity securities. The carrying amount of the short-term and long-term debt approximates the estimated fair value. See Note 10. Fair Value Measurements of the Notes to Consolidated Financial Statements in this Annual Report. Foreign Currency Contracts. We operate internationally and are exposed to potentially adverse movements in currency exchange rates. We enter into hedges in the form of foreign currency forward contracts to reduce our exposure to foreign currency rate changes on non-functional currency denominated forecasted transactions and balance sheet positions. The assets or liabilities associated with the forward contracts are recorded at fair value in other current assets or accrued liabilities in the consolidated balance sheets. The accounting for gains and losses resulting from changes in fair value depends on the use of the foreign currency forward contract and whether it is designated and qualifies for hedge accounting. See Note 9. Financial Assets and Liabilities of the Notes to Consolidated Financial Statements in this Annual Report. Concentration of Credit Risk. Financial instruments that potentially subject us to significant concentrations of credit risk consist principally of cash equivalents, short-term investments, foreign currency contracts, and trade accounts receivable. We maintain cash equivalents primarily in highly rated taxable and tax-exempt money market funds located in the U.S. and in various overseas locations. Our short-term investments include a variety of financial instruments, such as corporate debt and municipal securities, U.S. Treasury and Government agency securities. By policy, we limit the amount of credit exposure with any one issue, issuer and type of instrument. We sell our products worldwide primarily to customers in the global electronics market. We perform on-going credit evaluations of our customers’ financial condition and do not require collateral. We establish reserves for potential credit losses and such losses have been within management’s expectations and have not been material in any year presented. Income Taxes. We account for income taxes using the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. We account for uncertainty in income taxes using a two-step approach to recognizing and measuring uncertain tax positions. The first step is to evaluate the tax position for recognition by determining whether it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount which is more than 50% likely of being realized upon ultimate settlement. An uncertain tax position is considered effectively settled on completion of an examination by a taxing authority if certain other conditions are satisfied. Property and Equipment. Property and equipment is recorded at cost less accumulated depreciation. Assets, excluding land, are depreciated using the straight-line method over their estimated useful lives. Depreciation expenses were $162.9 million, $141.4 million and $103.9 million in fiscal 2024, 2023 and 2022, respectively. Repair and maintenance costs are expensed as incurred and such costs were $89.4 million, $74.4 million and $65.2 million in fiscal 2024, 2023 and 2022, respectively. The useful lives of depreciable assets are as follows: Useful Life in Years Computer and other equipment 3 - 8 Buildings 30 Furniture and fixtures 5 Leasehold improvements Shorter of the lease term or the estimated useful life Leases . We determine if an arrangement is a lease at inception of the contract, which is the date on which the terms of the contract are agreed to, and the agreement creates enforceable rights and obligations. A contract is or contains a lease when we have the right to control the use of an identified asset for a period of time. The commencement date of the lease is the date that the lessor makes an underlying asset available for use by the lessee. On the commencement date, leases are evaluated for classification and assets and liabilities are recognized based on the present value of lease payments over the lease term. The lease term used to calculate the lease liability includes options to extend or terminate the lease when it is reasonably certain that the option will be exercised. The right of use (ROU) asset is initially measured as the amount of lease liability, adjusted for any initial lease costs, prepaid lease payments and any lease incentives. Variable lease payments, consisting primarily of reimbursement of costs incurred by lessors for common area maintenance, real estate taxes and insurance, are not included in the lease liability and are recognized as they are incurred. As most of our leases do not provide an implicit rate, we use the incremental borrowing rate at lease commencement to measure ROU assets and lease liabilities. We use a benchmark senior unsecured yield curve for debt instruments over the similar term, and consider specific credit quality, market conditions, tenor of lease arrangements, and quality of collateral to determine the incremental borrowing rate. Operating lease expense is generally recognized on a straight-line basis over the lease term. We have elected the practical expedient to account for the lease and non-lease components as a single lease component for the majority of our asset classes. For leases with an initial term of one year or less, we have elected not to record the ROU asset or liability. Business Combinations. We allocate the purchase price of acquired companies to the tangible and intangible assets acquired and liabilities assumed based on their acquisition-date fair values with the exception of contract assets and contract liabilities (deferred revenue) which are recognized and measured on the acquisition date in accordance with our “Revenue Recognition” policy. The excess of the fair value of purchase consideration over the fair value of these identifiable assets and liabilities is recorded as goodwill. Acquisition-related expenses are recognized separately from the business combination and are expensed as incurred. We include the results of operations of the businesses that are acquired from the acquisition date. Goodwill. Goodwill represents the excess of the aggregate purchase price over the fair value of the net tangible and identifiable intangible assets acquired by us. All goodwill acquired in a business combination is assigned to one or more reporting units as of acquisition date. We have two reportable segments, and reporting units are determined to be the same as reportable segments. The carrying amount of goodwill at each reporting unit is tested for impairment annually on the first day of the fourth fiscal quarter, or more frequently if facts and circumstances warrant a review. We perform either a qualitative or quantitative assessment for goodwill impairment test. When a quantitative goodwill impairment assessment is performed, we use an income approach based on discounted cash flow analysis, a market approach based on market multiples, or a combination of both. If the fair value of a reporting unit is less than its carrying value, a goodwill impairment loss is recorded for the difference. Intangible Assets. Intangible assets consist of acquired technology, certain contract rights, customer relationships, trademarks and trade names, and capitalized software. These intangible assets are acquired through business combinations, direct purchases, or internally developed capitalized software. Intangible assets are amortized on a straight-line basis over their estimated useful lives which range from one We review the carrying values of long-lived assets including intangible assets whenever events or changes in circumstances indicate that the carrying value may not be fully recoverable. Recoverability of long-lived assets is measured by comparing the carrying value of such asset group to the future undiscounted cash flows that asset group is expected to generate. If the undiscounted future cash flow is less than the carrying amount of the asset group, we recognize an impairment loss based on the excess of the carrying amount over the fair value of the asset group. Redeemable Non-controlling Interest. Non-controlling interest that is not solely redeemable within our control is reported as temporary equity in our consolidated balance sheets. The carrying value of the redeemable non-controlling interest equals the redemption value at the end of each reporting period, after giving effect to the change from the net income (loss) attributable to the redeemable non-controlling interest. We remeasure the redemption value of the non-controlling interest on a quarterly basis and changes in the estimated redemption value are recognized through retained earnings and may also impact the net income or loss attributable to common stockholders of Synopsys if the redemption value falls below a stated threshold. See Note 5. Business Combinations of the Notes to Consolidated Financial Statements in this Annual Report for more information regarding the redeemable non-controlling interests. Revenue Recognition. We recognize revenue for the transfer of services or products to customers in an amount that reflects the consideration to which we expect to be entitled in exchange for those services or products. The principle is achieved through the following five-step approach: • Identification of the contract, or contracts, with the customer • Identification of the performance obligation in the contract • Determination of the transaction price • Allocation of the transaction price to the performance obligations in the contract • Recognition of revenue when, or as, we satisfy a performance obligation Nature of Products and Services We generate revenue from the licensing of our EDA software and IP blocks, as well as sale of hardware products, and maintenance and services. The various types are set forth below. Electronic Design Automation Software license revenue consists of fees associated with the licensing of our software primarily through Technology Subscription License (TSL) contracts. TSLs are time-based licenses for a finite term and generally provide the customer with limited rights to receive, or to exchange certain quantities of licensed software for, unspecified future technology. The majority of our arrangements are TSLs due to the nature of our business and customer requirements. In addition to the licenses, the arrangements also include: post-contract customer support, which includes providing frequent updates and upgrades to maintain the utility of the software due to rapid changes in technology; other intertwined services such as multiple copies of the tools; assisting our customers in applying our technology in the customers' development environment; and rights to remix licenses for other licenses. Payments are generally received in equal or near equal installments over the term of the arrangement. We have concluded that our software licenses in TSL contracts are not distinct from our obligation to provide unspecified software updates to the licensed software throughout the license term. Such updates represent inputs to a single, combined performance obligation, commencing upon the later of the arrangement effective date or transfer of control to the software license. Remix rights are not an additional promised good or service in the contract, and where unspecified additional software product rights are part of the contract with the customer, such rights are accounted for as part of the single performance obligation that includes the licenses, updates, and technical support because such rights are provided for the same period of time and have the same pattern of transfer to the customer over the duration of the subscription term. Design IP Products We generally license IP under nonexclusive license agreements that provide usage rights for specific applications. Additionally, for certain IP license agreements, royalties are collected as customers sell their own products that incorporate our IP. These arrangements generally have two distinct performance obligations that consist of transferring the licensed IP and the post contract support service. Support services consist of a stand-ready obligation to provide technical support and software updates over the support term. Revenue allocated to the IP license is recognized at a point in time upon the later of the delivery date or the beginning of the license period, and revenue allocated to support services is recognized ratably over the support term. Royalties are recognized as revenue is earned, generally when the customer sells its products that incorporate our IP. Hardware We generally have two performance obligations in arrangements involving the sale of hardware products. The first performance obligation is to transfer the hardware product, which includes embedded software integral to the functionality of the hardware product. The second performance obligation is to provide maintenance on the hardware and our embedded software, including rights to technical support, hardware repairs and software updates that are all provided over the same term and have the same time-based pattern of transfer to the customer. The portion of the transaction price allocated to the hardware product is recognized as revenue at a point in time when control of the hardware is transferred to the customer. We have concluded that control generally transfers upon shipment because the customer has the ability to direct the use of the asset and an obligation to pay for the hardware. The portion of the transaction price allocated to maintenance is recognized as revenue that is ratable over the maintenance term. Professional Services Our arrangements often include service elements other than maintenance and support services. These services include training, design assistance, and consulting. These services are generally performed on a time and materials basis, and are recognized over time, as the customer simultaneously receives and consumes the benefit provided. Certain arrangements also include the customization or modification of licensed IP. Revenue from these contracts is recognized over time as the services are performed, when the development is specific to the customer’s needs and we have enforceable rights to payment for performance completed. Inputs such as costs incurred and hours expended are used in order to measure progress of performance. We have a history of accurately estimating project status and the costs necessary to complete projects. A number of internal and external factors can affect these estimates, including labor rates, utilization and efficiency variances, specification and testing requirement changes, and changes in customer delivery priorities. Payments for services are generally due upon milestones in the contract or upon consumption of the hourly resources. Flexible Spending Accounts Our customers frequently enter into non-cancelable Flexible Spending Account arrangements (FSA) whereby the customer commits to a fixed dollar amount over a specified period of time that can be used to purchase from a list of our products or services. These arrangements do not meet the definition of a revenue contract until the customer executes a separate order (pulldown request) to identify the required products and services that they are purchasing. The combination of the FSA arrangement and the subsequent order creates enforceable rights and obligations, thus meeting the definition of a revenue contract. Each separate order under the agreement is treated as an individual contract and accounted for based on the respective performance obligations included within the pulldown requests. Significant Judgments Our contracts with customers often include promises to transfer multiple products and services to a customer. Determining whether services and products are considered distinct performance obligations that should be accounted for separately versus together requires significant judgment . We have concluded that (1) our EDA software licenses in TSL contracts are not distinct from our obligation to provide unspecified software updates to the licensed software throughout the license term, because those promises represent inputs to a single, combined performance obligation, and (2) where unspecified additional software product rights are part of the contract with the customer, such rights are accounted for as part of the single performance obligation that includes the licenses, updates, and technical support, because such rights are provided for the same period of time and have the same time-based pattern of transfer to the customer. In reaching this conclusion, we considered the nature of the obligation to customers, which is to provide an ongoing right to use the most up to date and relevant software. As EDA customers operate in a rapidly changing and competitive environment, satisfying the obligation requires providing critical updates to the existing software products, including ongoing iterative interaction with customers to make the software relevant to customers’ ability to meet the time to go to market with advanced products. Our contracts with customers can involve hundreds of products and various license rights. Customers often negotiate a broad portfolio of solutions, and favorable terms along with future purchase options to manage their overall costs. Determining whether the purchase options are considered distinct performance obligations that should be accounted for separately as material rights versus combined together may require significant judgment. Judgment is also required to determine the standalone selling price (SSP) for each distinct performance obligation. For non-software performance obligations (IP, Hardware, and services), SSP is established based on observable prices of products and services sold separately. SSP for license (and related updates and support) in a contract with multiple performance obligations is determined by applying a residual approach whereby all other non-software performance obligations within a contract are first allocated a portion of the transaction price based upon their respective SSP, using observable prices, with any residual amount of the transaction price allocated to the license because we do not sell the license separately, and the pricing is highly variable. Contract Balances The timing of revenue recognition may differ from the timing of invoicing customers, and these timing differences result in receivables (billed or unbilled), contract assets, or contract liabilities (deferred revenue) in our consolidated balance sheets. We record a contract asset when revenue is recognized prior to the right to invoice, or deferred revenue when revenue is recognized subsequent to invoicing. For time-based software agreements, customers are generally invoiced in equal, quarterly amounts, although some customers prefer to be invoiced in single or annual amounts. We record an unbilled receivable when revenue is recognized and we have an unconditional right to invoice and receive payment. Warranties and Indemnities Warranties. We generally warrant our products to be free from defects in media and to substantially conform to material specifications for a period of 90 days for our software products and for up to six months for our hardware products. Indemnities. In addition to such warranties, in certain cases, we provide our customers with limited indemnification with respect to claims that their use of our software products infringes on patents, copyrights, trademarks or trade secrets. We are unable to estimate the potential impact of these commitments on the future results of operations. Net Income Per Share. We compute basic net income per share by dividing net income available to common stockholders by the weighted average number of common shares outstanding during the period. Diluted net income per share reflects the dilution from potential common shares outstanding such as stock options and unvested restricted stock units and awards during the period using the treasury stock method. See Note 17. Net Income Per Share of the Notes to Consolidated Financial Statements in this Annual Report . Foreign Currency Translation. The functional currency of the majority of our active foreign subsidiaries is the foreign subsidiary’s local currency. Assets and liabilities that are not denominated in the functional currency are remeasured into the functional currency with any related gains or losses recorded in earnings. We translate assets and liabilities of our non-U.S. dollar functional currency foreign operations into the U.S. dollar reporting currency at exchange rates in effect at the balance sheet date. We translate income and expense items of such foreign operations into the U.S. dollar reporting currency at average exchange rates for the period. Accumulated translation adjustments are reported in stockholders’ equity, as a component of accumulated other comprehensive income (loss). Recent Accounting Pronouncements Not Yet Adopted In June 2022, the FASB issued ASU 2022-03, Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions, which applies to all equity securities measured at fair value that are subject to contractual sale restrictions. This change prohibits entities from taking into account contractual restrictions on the sale of equity securities when estimating fair value and introduces required disclosures for such transactions. The ASU will be effective for us beginning the fiscal year 2025 and will be applied prospectively. Any future impact from the adoption of this ASU will depend on the facts and circumstances of future transactions. In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. The ASU expands public entities’ segment disclosures by requiring disclosure of significant segment expenses that are regularly provided to the Chief Operating Decision Maker (CODM) and included within each reported measure of segment profit or loss, an amount and description of its composition for other segment items, and interim disclosures of a reportable segment’s profit or loss and assets. The ASU will be effective for our annual reports beginning in fiscal 2025, and interim period reports beginning in fiscal 2026. We are currently evaluating the impact of adopting this ASU on our consolidated financial statements and disclosures. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which enhances the transparency and decision usefulness of income tax disclosures primarily through changes to th

Discontinued Operations

Discontinued Operations	12 Months Ended
	Oct. 31, 2024
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	Discontinued Operations On September 30, 2024, we completed the sale of Software Integrity business to entities controlled by funds affiliated with Clearlake Capital Group, L.P. and Francisco Partners. The aggregate consideration for the sale was $1.65 billion, comprised of (i) cash of $1.48 billion received upon closing; (ii) $121.5 million reflecting the present value of $125 million deferred consideration receivable in equal installments over five fiscal quarters beginning on January 17, 2025, subject to acceleration at our option prior to the closing of our pending acquisition of ANSYS Inc. (Ansys); (iii) $22.2 million reflecting fair value of contingent consideration of up to $475 million receivable upon the Sponsors achieving a specified rate of return in the event of one or more potential liquidity transactions; and (iv) additional consideration receivable of $27.1 million as a result of net working capital adjustments. The fair value of the contingent consideration receivable was estimated using an option pricing model to derive the likelihood of achieving the performance-based metrics. The valuation methodology includes assumptions and judgments regarding volatility, discount rates, and the expected timing of payments. As of October 31, 2024, the deferred consideration receivable and the contingent consideration receivables were recorded within the prepaid and other current assets in the consolidated balance sheets. As a result of the Software Integrity Divestiture, we derecognized net assets of $720.5 million and incurred transaction costs of $61.7 million, resulting in a pre-tax gain of $868.8 million within income from discontinued operations in the consolidated statements of income, subject to certain post-closing adjustments that are expected to be finalized in the first quarter of fiscal 2025. The financial results of the Software Integrity business are presented as income from discontinued operations, net of income taxes in our consolidated statements of income. The financial results for fiscal 2024 include the period from the beginning of year through the date of sale. The following table presents the major components of financial results of our Software Integrity business for the periods presented: Year Ended October 31, 2024 2023 2022 (in thousands) Revenue $ 468,720 $ 524,605 $ 465,828 Cost of revenue 153,081 191,350 165,684 Operating expenses 265,029 337,235 286,820 Interest and other income (expense), net 2,003 292 (1,262) Income (loss) from discontinued operations 52,613 (3,688) 12,062 Gain on Software Integrity Divestiture 868,830 — — Income (loss) from discontinued operations before income taxes 921,443 (3,688) 12,062 Income tax provision (benefit) 99,773 (6,531) (2,307) Income from discontinued operations, net of income taxes $ 821,670 $ 2,843 $ 14,369 The following table represents the aggregated carrying amounts of classes of assets and liabilities that are classified as discontinued operations in the consolidated balance sheets for the periods presented: As of October 31, 2023 (in thousands) Assets: Cash and cash equivalents $ 4,947 Accounts receivable, net 90,307 Prepaid and other current assets 19,400 Total current assets of discontinued operations $ 114,654 Property and equipment, net $ 7,424 Operating lease right-of use assets, net 8,906 Goodwill 724,271 Intangible assets, net 134,617 Deferred income taxes 7,388 Other long-term assets 26,153 Total long-term assets of discontinued operations $ 908,759 Liabilities: Accounts payable and accrued liabilities $ 63,847 Operating lease liabilities 5,858 Deferred revenue 216,539 Total current liabilities of discontinued operations $ 286,244 Long-term operating lease liabilities $ 4,349 Long-term deferred revenue 24,301 Other long-term liabilities 4,607 Total long-term liabilities of discontinued operations $ 33,257 The following table presents significant non-cash items and capital expenditures of discontinued operations for the periods presented: Year Ended October 31, 2024 2023 2022 ( in thousands) Amortization and depreciation $ 16,317 $ 51,971 $ 44,173 Reduction of operating lease right-of-use assets $ 2,162 $ 5,120 $ 4,898 Amortization of capitalized costs to obtain revenue contracts $ 25,051 $ 30,071 $ 23,090 Stock-based compensation $ 34,381 $ 50,198 $ 37,280 Deferred income taxes $ (31,679) $ (3,136) $ (599) Purchases of property and equipment $ 1,487 $ 3,232 $ 3,610

Pending Acquisition of Ansys

Pending Acquisition of Ansys	12 Months Ended
	Oct. 31, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
Pending Acquisition of Ansys	Pending Acquisition of Ansys On January 15, 2024, we entered into an Agreement and Plan of Merger (the Merger Agreement) to acquire all of the outstanding shares of Ansys, a provider of broad engineering simulation and analysis software and services, in a cash-and-stock transaction (the Ansys Merger) that values Ansys at approximately $35.0 billion, based on the closing price of Synopsys common stock on December 21, 2023. Under the terms of the Merger Agreement, at the effective time of the Ansys Merger (the Effective Time), each share of Ansys common stock issued and outstanding immediately prior to the Effective Time (with certain exceptions set forth in the Merger Agreement) will be converted into the right to receive 0.3450 (the Exchange Ratio) of a share of Synopsys common stock and $197.00 in cash, without interest. The Merger Agreement also provides for Synopsys’ assumption of certain outstanding Ansys options and other unvested Ansys equity awards held by continuing Ansys employees. If the stock consideration to be issued by Synopsys in connection with the Ansys Merger exceeds 19.9999% of the shares of Synopsys common stock issued and outstanding immediately prior to the Effective Time, the Exchange Ratio will be reduced to the minimum extent necessary to ensure that the aggregate number of shares of Synopsys common stock to be issued in connection with the Ansys Merger does not exceed such threshold, and the cash consideration will be correspondingly increased to offset such adjustment. The Ansys Merger was approved by the holders of a majority of the outstanding shares of Ansys common stock on May 22, 2024 and is anticipated to close in the first half of calendar year 2025. The Ansys Merger is subject to the satisfaction or waiver of customary closing conditions, including, among other things, the clearance of the Ansys Merger under certain antitrust and foreign investment regimes, and the continued effectiveness of the registration statement on Form S-4 (File No. 333-277912) filed by us on March 14, 2024 and declared effective by the SEC on April 17, 2024. Following the determination that it was a necessary step towards obtaining governmental approval of and successfully closing the Ansys Merger, on September 3, 2024, we signed a definitive agreement for the sale of our Optical Solutions Group (OSG) to Keysight Technologies, Inc. (Keysight) (such sale, the Optical Solutions Divestiture). The Optical Solutions Divestiture is subject to customary closing conditions, including review by regulatory authorities, and the successful closing of the Ansys Merger. As such, the assets and liabilities of OSG have not been classified as assets held for sale in the consolidated balance sheets. We and Ansys each have termination rights under the Merger Agreement. A fee of $1.5 billion may be payable by us to Ansys, or a fee of $950.0 million may be payable by Ansys to us, upon termination of the Merger Agreement under specified circumstances, each as more fully described in the Merger Agreement. In connection with the execution of the Merger Agreement, we entered into a commitment letter on January 15, 2024 (the Bridge Commitment Letter) with certain financial institutions that committed to provide, subject to the satisfaction of customary closing conditions, a senior unsecured bridge facility (the Bridge Commitment). On October 3, 2024, we reduced the Bridge Commitment by $1.1 billion to $10.6 billion following the closing of the Software Integrity Divestiture. The Bridge Commitment currently provides for an aggregate principal amount of up to $10.6 billion. On February 13, 2024 , we entered into a term loan facility credit agreement (the Term Loan Agreement), which provides us with the ability to borrow up to $4.3 billion at the closing of the Ansys Merger, subject to the satisfaction of customary closing conditions for similar facilities, for the purpose of financing a portion of the cash consideration to be paid in the Ansys Merger and paying related fees and expenses in connection with the Ansys Merger and the other transactions contemplated by the Merger Agreement. See Note 11. Bridge Commitment Letter, Term Loan and Revolving Credit Facilities of the Notes to Consolidated Financial Statements in this Annual Report for more information on the Bridge Commitment and the Term Loan Agreement. Fiscal 2024 During fiscal 2024, we completed several acquisitions for an aggregate purchase consideration of $159.3 million, net of cash acquired. The aggregate purchase consideration was preliminary and allocated as follows: $78.9 million to identifiable intangible assets, $96.1 million to goodwill, and $15.7 million to net tangible liabilities. The acquired identifiable intangible assets were valued using the income approach and are being amortized over their respective useful lives ranging from 3 to 13 years. The goodwill recognized from these acquisitions, of which $61.8 million was attributable to the Design Automation reporting unit, and $34.3 million was attributable to the Design IP reporting unit, was not deductible for income tax purposes. We have included the financial results of the fiscal 2024 acquisitions in our consolidated financial statements from their respective acquisition date. We do not consider these acquisitions to be material, individually or in the aggregate, to our consolidated financial statements. Fiscal 2023 During fiscal 2023, we completed several acquisitions for an aggregate purchase consideration of $295.4 million, net of cash acquired. We do not consider these acquisitions to be material, individually or in the aggregate, to our consolidated financial statements. The t otal purchase consideration was allocated as follows: $95.8 million to identifiable intangible assets, $229.4 million to goodwill, and $29.8 million to net tangible liabilities. The goodwill recognized from these acquisitions was assigned to the Design Automation reporting unit, of which $5.7 million was deductible for income tax purposes. Fiscal 2022 OpenLight Photonics, Inc. During the second quarter of fiscal 2022, we acquired a 75% equity interest in OpenLight Photonics, Inc. (OpenLight) for cash consideration of $90.0 million. The remaining 25% equity interest in OpenLight is held by Juniper Networks, Inc. (the Minority Investor) from their contribution of IP and certain tangible assets. The agreement with the Minority Investor contains redemption features whereby the interest held by the Minority Investor is redeemable either (i) at the option of the Minority Investor on or after the third anniversary of the acquisition or sooner in certain circumstances or (ii) at our option beginning on the third anniversary of the acquisition. This option is exercisable at the greater of fair value at the time of redemption or $30.0 million and was valued at $10.1 million, resulting in a total consideration of $100.1 million. The purchase price was allocated as follows: $94.0 million to identifiable intangible assets and $46.7 million to goodwill, which were attributable to the Design Automation reporting unit. There was no tax-deductible goodwill related to the acquisition. During fiscal 2024, we assessed long-lived assets for impairment and wrote off the remaining unamortized intangible assets balance of $53.5 million due to impairment. See Note 7. Goodwill and Intangible Assets of the Notes to Consolidated Financial Statements in this Annual Report. During fiscal 2024, our ownership interest in OpenLight was reduced to 71% as a result of the recognition of non-controlling interest upon issuance of OpenLight stock. During fiscal 2024, 2023 and 2022 , OpenLight incurred a net loss of $91.7 million, $40.9 million and $19.4 million , respectively, of which $22.0 million, $10.0 million and $4.9 million , respectively, was attributable to redeemable non-controlling interest. As of October 31, 2024 and 2023 , the carrying value of the redeemable non-controlling interest was recorded at its estimated fair value of $30.0 million and $31.0 million, respectively, in the consolidated balance sheets. NTT Security AppSec Solutions Inc. On June 22, 2022, we completed the acquisition of all outstanding shares of NTT Security AppSec Solutions Inc. (which operated under the name WhiteHat Security, or WhiteHat), a provider of dynamic application security testing solutions, from NTT Security Corporation for an aggregate purchase price of $310.0 million, net of cash acquired. With this acquisition, we broadened our product offering in the application security testing market. The aggregate purchase consideration was allocated as follows: $97.5 million to identifiable intangible assets, $252.9 million to goodwill, and $40.4 million to net tangible liabilities. The goodwill was not deductible for tax purposes. The assets and liabilities attributed to WhiteHat were related to the Software Integrity business and reclassified as discontinued operations as of October 31, 2023 in our consolidated balance sheets. Other Fiscal 2022 Acquisitions During fiscal 2022, we completed two other acquisitions for aggregate purchase consideration of $31.8 million, net of cash acquired. The purchase price was allocated as follows: $12.7 million to identifiable intangible assets, $3.1 million to net tangible liabilities, and $22.2 million to goodwill, which were attributable to the Design Automation reporting unit . There was no tax-deductible goodwill related to the acquisitions. Preliminary Fair Value Estimates For all acquisitions completed in fiscal 2024, the purchase price was allocated to tangible and identifiable intangible assets acquired and liabilities assumed based on their preliminary estimated fair values, which were determined using generally accepted valuation techniques based on estimates and assumptions made by management at the time of acquisition. These estimates and assumptions are subject to change as additional information becomes available during the respective measurement period, which is not expected to exceed 12 months from applicable acquisition date. The primary areas of those preliminary estimates relate to certain tangible assets and liabilities, identifiable intangible assets, and income taxes. Transaction Costs Transaction costs from continuing operations were $172.6 million, mainly in connection with the pending Ansys Merger , $13.8 million and $9.4 million during fiscal 2024, 2023 and 2022, respectively. These costs mainly consisted of professional fees and administrative costs for closed and pending acquisitions and were expensed as incurred in our consolidated statements of income.

Business Combinations

Business Combinations	12 Months Ended
	Oct. 31, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
Business Combinations	Pending Acquisition of Ansys On January 15, 2024, we entered into an Agreement and Plan of Merger (the Merger Agreement) to acquire all of the outstanding shares of Ansys, a provider of broad engineering simulation and analysis software and services, in a cash-and-stock transaction (the Ansys Merger) that values Ansys at approximately $35.0 billion, based on the closing price of Synopsys common stock on December 21, 2023. Under the terms of the Merger Agreement, at the effective time of the Ansys Merger (the Effective Time), each share of Ansys common stock issued and outstanding immediately prior to the Effective Time (with certain exceptions set forth in the Merger Agreement) will be converted into the right to receive 0.3450 (the Exchange Ratio) of a share of Synopsys common stock and $197.00 in cash, without interest. The Merger Agreement also provides for Synopsys’ assumption of certain outstanding Ansys options and other unvested Ansys equity awards held by continuing Ansys employees. If the stock consideration to be issued by Synopsys in connection with the Ansys Merger exceeds 19.9999% of the shares of Synopsys common stock issued and outstanding immediately prior to the Effective Time, the Exchange Ratio will be reduced to the minimum extent necessary to ensure that the aggregate number of shares of Synopsys common stock to be issued in connection with the Ansys Merger does not exceed such threshold, and the cash consideration will be correspondingly increased to offset such adjustment. The Ansys Merger was approved by the holders of a majority of the outstanding shares of Ansys common stock on May 22, 2024 and is anticipated to close in the first half of calendar year 2025. The Ansys Merger is subject to the satisfaction or waiver of customary closing conditions, including, among other things, the clearance of the Ansys Merger under certain antitrust and foreign investment regimes, and the continued effectiveness of the registration statement on Form S-4 (File No. 333-277912) filed by us on March 14, 2024 and declared effective by the SEC on April 17, 2024. Following the determination that it was a necessary step towards obtaining governmental approval of and successfully closing the Ansys Merger, on September 3, 2024, we signed a definitive agreement for the sale of our Optical Solutions Group (OSG) to Keysight Technologies, Inc. (Keysight) (such sale, the Optical Solutions Divestiture). The Optical Solutions Divestiture is subject to customary closing conditions, including review by regulatory authorities, and the successful closing of the Ansys Merger. As such, the assets and liabilities of OSG have not been classified as assets held for sale in the consolidated balance sheets. We and Ansys each have termination rights under the Merger Agreement. A fee of $1.5 billion may be payable by us to Ansys, or a fee of $950.0 million may be payable by Ansys to us, upon termination of the Merger Agreement under specified circumstances, each as more fully described in the Merger Agreement. In connection with the execution of the Merger Agreement, we entered into a commitment letter on January 15, 2024 (the Bridge Commitment Letter) with certain financial institutions that committed to provide, subject to the satisfaction of customary closing conditions, a senior unsecured bridge facility (the Bridge Commitment). On October 3, 2024, we reduced the Bridge Commitment by $1.1 billion to $10.6 billion following the closing of the Software Integrity Divestiture. The Bridge Commitment currently provides for an aggregate principal amount of up to $10.6 billion. On February 13, 2024 , we entered into a term loan facility credit agreement (the Term Loan Agreement), which provides us with the ability to borrow up to $4.3 billion at the closing of the Ansys Merger, subject to the satisfaction of customary closing conditions for similar facilities, for the purpose of financing a portion of the cash consideration to be paid in the Ansys Merger and paying related fees and expenses in connection with the Ansys Merger and the other transactions contemplated by the Merger Agreement. See Note 11. Bridge Commitment Letter, Term Loan and Revolving Credit Facilities of the Notes to Consolidated Financial Statements in this Annual Report for more information on the Bridge Commitment and the Term Loan Agreement. Fiscal 2024 During fiscal 2024, we completed several acquisitions for an aggregate purchase consideration of $159.3 million, net of cash acquired. The aggregate purchase consideration was preliminary and allocated as follows: $78.9 million to identifiable intangible assets, $96.1 million to goodwill, and $15.7 million to net tangible liabilities. The acquired identifiable intangible assets were valued using the income approach and are being amortized over their respective useful lives ranging from 3 to 13 years. The goodwill recognized from these acquisitions, of which $61.8 million was attributable to the Design Automation reporting unit, and $34.3 million was attributable to the Design IP reporting unit, was not deductible for income tax purposes. We have included the financial results of the fiscal 2024 acquisitions in our consolidated financial statements from their respective acquisition date. We do not consider these acquisitions to be material, individually or in the aggregate, to our consolidated financial statements. Fiscal 2023 During fiscal 2023, we completed several acquisitions for an aggregate purchase consideration of $295.4 million, net of cash acquired. We do not consider these acquisitions to be material, individually or in the aggregate, to our consolidated financial statements. The t otal purchase consideration was allocated as follows: $95.8 million to identifiable intangible assets, $229.4 million to goodwill, and $29.8 million to net tangible liabilities. The goodwill recognized from these acquisitions was assigned to the Design Automation reporting unit, of which $5.7 million was deductible for income tax purposes. Fiscal 2022 OpenLight Photonics, Inc. During the second quarter of fiscal 2022, we acquired a 75% equity interest in OpenLight Photonics, Inc. (OpenLight) for cash consideration of $90.0 million. The remaining 25% equity interest in OpenLight is held by Juniper Networks, Inc. (the Minority Investor) from their contribution of IP and certain tangible assets. The agreement with the Minority Investor contains redemption features whereby the interest held by the Minority Investor is redeemable either (i) at the option of the Minority Investor on or after the third anniversary of the acquisition or sooner in certain circumstances or (ii) at our option beginning on the third anniversary of the acquisition. This option is exercisable at the greater of fair value at the time of redemption or $30.0 million and was valued at $10.1 million, resulting in a total consideration of $100.1 million. The purchase price was allocated as follows: $94.0 million to identifiable intangible assets and $46.7 million to goodwill, which were attributable to the Design Automation reporting unit. There was no tax-deductible goodwill related to the acquisition. During fiscal 2024, we assessed long-lived assets for impairment and wrote off the remaining unamortized intangible assets balance of $53.5 million due to impairment. See Note 7. Goodwill and Intangible Assets of the Notes to Consolidated Financial Statements in this Annual Report. During fiscal 2024, our ownership interest in OpenLight was reduced to 71% as a result of the recognition of non-controlling interest upon issuance of OpenLight stock. During fiscal 2024, 2023 and 2022 , OpenLight incurred a net loss of $91.7 million, $40.9 million and $19.4 million , respectively, of which $22.0 million, $10.0 million and $4.9 million , respectively, was attributable to redeemable non-controlling interest. As of October 31, 2024 and 2023 , the carrying value of the redeemable non-controlling interest was recorded at its estimated fair value of $30.0 million and $31.0 million, respectively, in the consolidated balance sheets. NTT Security AppSec Solutions Inc. On June 22, 2022, we completed the acquisition of all outstanding shares of NTT Security AppSec Solutions Inc. (which operated under the name WhiteHat Security, or WhiteHat), a provider of dynamic application security testing solutions, from NTT Security Corporation for an aggregate purchase price of $310.0 million, net of cash acquired. With this acquisition, we broadened our product offering in the application security testing market. The aggregate purchase consideration was allocated as follows: $97.5 million to identifiable intangible assets, $252.9 million to goodwill, and $40.4 million to net tangible liabilities. The goodwill was not deductible for tax purposes. The assets and liabilities attributed to WhiteHat were related to the Software Integrity business and reclassified as discontinued operations as of October 31, 2023 in our consolidated balance sheets. Other Fiscal 2022 Acquisitions During fiscal 2022, we completed two other acquisitions for aggregate purchase consideration of $31.8 million, net of cash acquired. The purchase price was allocated as follows: $12.7 million to identifiable intangible assets, $3.1 million to net tangible liabilities, and $22.2 million to goodwill, which were attributable to the Design Automation reporting unit . There was no tax-deductible goodwill related to the acquisitions. Preliminary Fair Value Estimates For all acquisitions completed in fiscal 2024, the purchase price was allocated to tangible and identifiable intangible assets acquired and liabilities assumed based on their preliminary estimated fair values, which were determined using generally accepted valuation techniques based on estimates and assumptions made by management at the time of acquisition. These estimates and assumptions are subject to change as additional information becomes available during the respective measurement period, which is not expected to exceed 12 months from applicable acquisition date. The primary areas of those preliminary estimates relate to certain tangible assets and liabilities, identifiable intangible assets, and income taxes. Transaction Costs Transaction costs from continuing operations were $172.6 million, mainly in connection with the pending Ansys Merger , $13.8 million and $9.4 million during fiscal 2024, 2023 and 2022, respectively. These costs mainly consisted of professional fees and administrative costs for closed and pending acquisitions and were expensed as incurred in our consolidated statements of income.

Revenue

Revenue	12 Months Ended
	Oct. 31, 2024
Revenue from Contract with Customer [Abstract]
Revenue	Revenue Disaggregated Revenue The following table shows the percentage of revenue by product groups: Year Ended October 31, 2024 2023 2022 EDA 66.4 % 69.2 % 69.2 % Design IP 31.1 % 29.0 % 28.5 % Other 2.5 % 1.8 % 2.3 % Total 100.0 % 100.0 % 100.0 % Contract Balances The contract assets indicated below are presented as prepaid and other current assets in the consolidated balance sheets. The contract assets are transferred to receivables when the rights to invoice and receive payment become unconditional. Unbilled receivables are presented as accounts receivable, net, in the consolidated balance sheets. Contract balances are as follows: As of October 31, 2024 2023 (in thousands) Contract assets, net $ 757,075 $ 375,904 Unbilled receivables $ 44,166 $ 60,016 Deferred revenue $ 1,732,568 $ 1,710,288 During fiscal 2024, we recognized revenue of $1.5 billion, that was included in the deferred revenue balance as of October 31, 2023, including previously unfulfilled contracts that have expired and are no longer subject to an implied promise to provide future services. During fiscal 2023, we recognized revenue of $1.5 billion, that was included in the deferred revenue balance as of October 31, 2022, including previously unfulfilled contracts that have expired and are no longer subject to an implied promise to provide future services. Contracted but unsatisfied or partially unsatisfied performance obligations (backlog) were approximately $8.1 billion as of October 31, 2024, which includes $1.2 billion in non-cancellable Flexible Spending Account (FSA) commitments from customers where actual product selection and quantities of specific products or services are to be determined by customers at a later date. We have elected to exclude future sales-based royalty payments from the remaining performance obligations. Approximately 41% of the backlog as of October 31, 2024, excluding non-cancellable FSA, is expected to be recognized as revenue over the next 12 months, with the remainder to be recognized thereafter. The majority of the remaining backlog is expected to be recognized in the following three years. The backlog was approximately $8.1 billion as of October 31, 2023, which included $1.4 billion in non-cancellable FSA commitments from customers. During fiscal 2024 and 2023, we recognized $104.4 million and $99.3 million, respectively, from performance obligations satisfied from sales-based royalties earned during the periods. Costs of Obtaining a Contract with Customer The incremental costs of obtaining a contract with a customer, which consist primarily of direct sales commission earned upon execution of the contract, were capitalized in compliance with authoritative guidance, and amortized over the estimated period of which the benefit is expected to be received. As direct sales commission paid for renewals are commensurate with the amounts paid for initial contracts, the deferred incremental costs will be recognized over the contract term. Capitalized commission costs, net of accumulated amortization, as of October 31, 2024 and 2023 were $72.8 million and $67.2 million, respectively. The balances are included in other long-term assets in our consolidated balance sheets. Amortization of these assets were $48.5 million, $52.1 million and $49.9 million during fiscal 2024, 2023 and 2022, respectively, and are included in sales and marketing expense in our consolidated statements of income.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	12 Months Ended
	Oct. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill As a result of the Software Integrity Divestiture effective in the second quarter of fiscal 2024, we have two reporting segments, and reporting units are determined to be the same as reportable segments. The change has no impact on the composition of remaining two reporting units, therefore, no impairment indicator was identified upon the change. We performed the required annual goodwill assessment in the fourth quarter of fiscal 2024, and concluded the goodwill was not impaired. There was no goodwill impairment in fiscal 2024, 2023 and 2022. Goodwill activity by reportable segment consists of the following: Design Automation Design IP Total (in thousands) Balance at October 31, 2022 $ 2,176,337 $ 944,734 $ 3,121,071 Additions 229,351 — 229,351 Effect of foreign currency translation (5,006) 649 (4,357) Balance at October 31, 2023 2,400,682 945,383 3,346,065 Additions 61,803 34,339 96,142 Adjustments 170 — 170 Effect of foreign currency translation 6,602 (129) 6,473 Balance at October 31, 2024 $ 2,469,257 $ 979,593 $ 3,448,850 Intangible Assets During the fourth quarter of fiscal 2024, we assessed long-lived assets for impairment and recorded an impairment charge of $53.5 million related to acquired intangible assets. The impairment charge was triggered by a decline in estimated fair value resulting from the reductions in the expected future cash flows associated with our core/developed technology intangible assets related to our OpenLight business. There were no other impairment charges for long-lived assets in fiscal 2024, 2023 and 2022. Intangible assets as of October 31, 2024 consists of the following: Gross Carrying Amount Accumulated Amortization and Impairment Net Amount (in thousands) Core/developed technology $ 904,347 $ 777,518 $ 126,829 Customer relationships 314,140 247,025 67,115 Contract rights intangible 176,382 175,170 1,212 Trademarks and trade names 12,925 12,917 8 Total $ 1,407,794 $ 1,212,630 $ 195,164 Intangible assets as of October 31, 2023 consists of the following: Gross Carrying Amount Accumulated Net Amount (in thousands) Core/developed technology $ 842,448 $ 672,480 $ 169,968 Customer relationships 296,883 231,557 65,326 Contract rights intangible 175,747 171,487 4,260 Trademarks and trade names 12,925 12,902 23 Capitalized software development costs 50,795 50,795 — Total $ 1,378,798 $ 1,139,221 $ 239,577 Amortization expense related to acquired intangible assets, including the impairment charge Year Ended October 31, 2024 2023 2022 (in thousands) Core/developed technology $ 104,797 $ 42,892 $ 42,582 Customer relationships 15,550 9,288 11,389 Contract rights intangible 3,872 2,389 2,307 Trademarks and trade names 15 7 33 Capitalized software development costs (1) — 4,770 2,672 Total $ 124,234 $ 59,346 $ 58,983 (1) Amortization of capitalized software development costs is included in cost of products revenue in the consolidated statements of income. The following table presents the estimated future amortization of acquired intangible assets as of October 31, 2024: Fiscal Year (in thousands) 2025 $ 46,436 2026 36,112 2027 31,165 2028 25,572 2029 23,038 2030 and thereafter 32,841 Total $ 195,164

Balance Sheet Components

Balance Sheet Components	12 Months Ended
	Oct. 31, 2024
Balance Sheet Related Disclosures [Abstract]
Balance Sheet Components	Balance Sheet Components As of October 31, 2024 2023 (in thousands) Accounts receivable, net: Accounts receivable $ 941,312 $ 835,327 Unbilled accounts receivable 44,166 60,016 Total accounts receivable 985,478 895,343 Less: allowance for credit losses (51,008) (38,683) Total $ 934,470 $ 856,660 Property and equipment, net: Computer and other equipment $ 1,011,712 $ 973,540 Buildings 103,779 135,255 Furniture and fixtures 87,524 83,649 Land 18,219 21,598 Leasehold improvements 271,753 259,241 1,492,987 1,473,283 Less: accumulated depreciation (1) (929,981) (923,446) Total $ 563,006 $ 549,837 Other long-term assets: Deferred compensation plan assets $ 386,757 $ 297,180 Capitalized commission, net 72,801 67,240 Other 124,142 80,400 Total $ 583,700 $ 444,820 Accounts payable and accrued liabilities: Payroll and related benefits $ 624,823 $ 531,848 Accrued income taxes 147,115 226,762 Other accrued liabilities 184,321 146,696 Accounts payable 207,333 154,608 Total $ 1,163,592 $ 1,059,914 Other long-term liabilities: Deferred compensation plan liabilities $ 386,757 $ 297,180 Other 82,981 84,351 Total $ 469,738 $ 381,531 (1) Accumulated depreciation includes write-offs due to retirement of fully depreciated fixed assets.

Financial Assets and Liabilitie

Financial Assets and Liabilities	12 Months Ended
	Oct. 31, 2024
Financial Assets And Liabilities [Abstract]
Financial Assets and Liabilities	Financial Assets and Liabilities Cash Equivalents and Short-term Investments As of October 31, 2024, the balances of our cash equivalents and short-term investments are as follows: Amortized Cost Gross Gross Gross Estimated (1) (in thousands) Cash equivalents: Money market funds $ 869,972 $ — $ — $ — $ 869,972 U.S. Treasury, agency & T-bills 7,984 1 — — 7,985 Total: $ 877,956 $ 1 $ — $ — $ 877,957 Short-term investments: U.S. Treasury, agency & T-bills $ 19,411 $ 44 $ (6) $ — $ 19,449 Corporate debt securities 105,024 349 (115) (2) 105,256 Asset-backed securities 29,061 130 (7) (20) 29,164 Total: $ 153,496 $ 523 $ (128) $ (22) $ 153,869 (1) See Note 10. Fair Value Measurements for further discussion on fair values. Our short-term investment portfolio includes both corporate and government debt securities that have a maximum maturity of three years. The longer the duration of these securities, the more susceptible they are to changes in market interest rates and bond yields. As yields increase, those securities with a lower yield-at-cost show a mark-to-market unrealized loss. Most of our unrealized losses are due to changes in market interest rates, and bond yields. We believe that we have the ability to realize the full value of all of these investments upon maturity. As of October 31, 2024, our investments that were in a continuous loss position of 12 months or more, as well as the unrealized losses on those investments, were immaterial. The contractual maturities of our available-for-sale debt securities as of October 31, 2024 are as follows: Amortized Cost Fair Value (in thousands) Less than 1 year $ 57,022 $ 57,156 1-5 years 92,217 92,449 5-10 years 2,518 2,531 >10 years 1,739 1,733 Total $ 153,496 $ 153,869 As of October 31, 2023, the balances of our cash equivalents and short-term investments are as follows: Amortized Gross Gross Gross Estimated (1) (in thousands) Cash equivalents: Money market funds $ 10,129 $ — $ — $ — $ 10,129 U.S. Treasury, agency & T-bills 2,994 — — — $ 2,994 Total: $ 13,123 $ — $ — $ — $ 13,123 Short-term investments: U.S. Treasury, agency & T-bills $ 15,752 $ — $ (61) $ (2) $ 15,689 Municipal bonds 515 — — (16) 499 Corporate debt securities 103,213 13 (455) (396) 102,375 Asset-backed securities 33,245 21 (93) (97) 33,076 Total: $ 152,725 $ 34 $ (609) $ (511) $ 151,639 (1) See Note 10. Fair Value Measurements for further discussion on fair values. Restricted cash We include amounts generally described as restricted cash in cash and cash equivalents when reconciling beginning-of-period and end-of-period total amounts shown in the consolidated statements of cash flows. Restricted cash is primarily associated with office leases and employee loan programs. The following table provides a reconciliation of cash, cash equivalents and restricted cash included in the consolidated balance sheets and the consolidated statements of cash flows: As of October 31, 2024 2023 (in thousands) Cash and cash equivalents $ 3,896,532 $ 1,433,966 Restricted cash included in prepaid and other current assets 1,529 1,549 Restricted cash included in other long-term assets 668 725 Cash, cash equivalents and restricted cash 3,898,729 1,436,240 Cash, cash equivalents and restricted cash from discontinued operations — 4,947 Total cash, cash equivalents and restricted cash, including cash from discontinued operations $ 3,898,729 $ 1,441,187 Non-marketable equity securities Our portfolio of non-marketable equity securities consists of strategic investments in privately held companies. In November 2023, we completed the sale of strategic investments in privately-held companies. The gain recognized from the sales was $55.1 million and included in interest and other income (expense), net, in our consolidated statements of income. There were no material impairments of non-marketable equity securities in fiscal 2024, 2023, and 2022. Derivatives We recognize derivative instruments as either assets or liabilities in the consolidated balance sheets at fair value and provide qualitative and quantitative disclosures about such derivatives. We operate internationally and are exposed to potentially adverse movements in foreign currency exchange rates. We enter into hedges in the form of foreign currency forward contracts to reduce our exposure to foreign currency rate changes on non-functional currency denominated forecasted transactions and balance sheet positions including: (1) certain assets and liabilities, (2) shipments forecasted to occur within approximately one month, (3) future billings and revenue on previously shipped orders, and (4) certain future intercompany invoices denominated in foreign currencies. The duration of forward contracts, the majority of which are short-term, ranges from approximately 2 months to 29 months at inception. We do not use foreign currency forward contracts for speculative or trading purposes. We enter into foreign exchange forward contracts with high credit quality financial institutions that are rated "A" or above and to date have not experienced nonperformance by counterparties. In addition, we mitigate credit risk in derivative transactions by permitting net settlement of transactions with the same counterparty and anticipate continued performance by all counterparties to such agreements. The assets or liabilities associated with the forward contracts are recorded at fair value in other current assets or accrued liabilities in the consolidated balance sheets. The accounting for gains and losses resulting from changes in fair value depends on the use of the foreign currency forward contract and whether it is designated and qualifies for hedge accounting. The cash flow impact upon settlement of the derivative contracts is included in “net cash provided by operating activities” in the consolidated statements of cash flows. Cash Flow Hedging Activities Certain foreign exchange forward contracts are designated and qualify as cash flow hedges. These contracts have durations of approximately 29 months or less. Certain forward contracts are rolled over periodically to capture the full length of exposure to our foreign currency risk, which can be up to three years. 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 the hedged transactions. The related gains or losses resulting from changes in fair value of these hedges is initially reported, net of tax, as a component of other comprehensive income (loss) (OCI) in stockholders’ equity and reclassified into revenue or operating expenses, as appropriate, at the time the hedged transactions affect earnings. We expect a majority of the hedge balance in OCI to be reclassified to the statements of income within the next 12 months. We did not record any gains or losses related to discontinuation of cash flow hedges for fiscal years 2024, 2023 and 2022. Non-designated Hedging Activities Our foreign exchange forward contracts that are used to hedge non-functional currency denominated balance sheet assets and liabilities are not designated as hedging instruments. Accordingly, any gains or losses from changes in the fair value of the forward contracts are recorded in interest and other income (expense), net. The gains and losses on these forward contracts generally offset the gains and losses associated with the underlying assets and liabilities, which are also recorded in interest and other income (expense), net. The duration of the forward contracts for hedging our balance sheet exposure is approximately one month. We also have certain foreign exchange forward contracts for hedging certain international revenues and expenses that are not designated as hedging instruments. Accordingly, any gains or losses from changes in the fair value of the forward contracts are recorded in interest and other income (expense), net. The gains and losses on these forward contracts generally offset the gains and losses associated with the foreign currency in operating income. The duration of these forward contracts is usually less than one year. The overall goal of our hedging program is to minimize the impact of currency fluctuations on the net income over the fiscal year. The effects of the non-designated derivative instruments in our consolidated statements of income are summarized as follows: Year Ended October 31, 2024 2023 2022 (in thousands) Gains (losses) recorded in interest and other income (expense), net $ (307) $ (5,899) $ (15,851) The notional amounts in the table below for derivative instruments provide one measure of the transaction volume outstanding: As of October 31, 2024 2023 (in thousands) Total gross notional amounts $ 1,686,341 $ 1,666,758 Net fair value $ 1,819 $ (2,308) Our exposure to the market gains or losses will vary over time as a function of currency exchange rates. The amounts ultimately realized upon settlement of these financial instruments, together with the gains and losses on the underlying exposures, will depend on actual market conditions during the remaining life of the instruments. The following table represents the consolidated balance sheets location and amount of derivative instrument fair values segregated between designated and non-designated hedge instruments: Fair values of Fair values of (in thousands) Balance at October 31, 2024 Other current assets $ 8,839 $ 12 Accrued liabilities $ 6,918 $ 114 Balance at October 31, 2023 Other current assets $ 12,962 $ 491 Accrued liabilities $ 14,665 $ 1,096 The following table represents the location of the amount of gains and losses on derivative instrument fair values for designated hedge instruments, net of tax in the consolidated statements of income: Location of gains (losses) Amount of gains (losses) Location of gains (losses) Amount of (in thousands) Fiscal year ended October 31, 2024 Foreign exchange contracts Revenue $ 3,940 Revenue $ 3,089 Foreign exchange contracts Operating expenses 5,685 Operating expenses 112 Total $ 9,625 $ 3,201 Fiscal year ended October 31, 2023 Foreign exchange contracts Revenue $ 8,390 Revenue $ (9,942) Foreign exchange contracts Operating expenses 16,596 Operating expenses (15,334) Total $ 24,986 $ (25,276) Fiscal year ended October 31, 2022 Foreign exchange contracts Revenue $ (19,755) Revenue $ 10,975 Foreign exchange contracts Operating expenses (59,314) Operating expenses (15,869) Total $ (79,069) $ (4,894)

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Oct. 31, 2024
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements ASC 820-10, Fair Value Measurements and Disclosures , defines fair value, establishes guidelines and enhances disclosure requirements for fair value measurements. The accounting guidance requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The accounting guidance also establishes a fair value hierarchy based on the independence of the source and objective evidence of the inputs used. There are three fair value hierarchies based upon the level of inputs that are significant to fair value measurement: Level 1 —Observable inputs that reflect quoted prices (unadjusted) for identical instruments in active markets; Level 2 —Observable inputs other than quoted prices for identical instruments in active markets, quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in inactive markets, and model-driven valuations in which all significant inputs and significant value drivers are observable in active markets; and Level 3 —Unobservable inputs derived from fair valuation techniques in which one or more significant inputs or significant value drivers are unobservable. On a recurring basis, we measure the fair value of certain assets and liabilities, which include cash equivalents, short-term investments, non-qualified deferred compensation plan assets, and foreign currency derivative contracts. Our cash equivalents and short-term investments are classified within Level 1 or Level 2 because they are valued using quoted market prices in an active market or alternative independent pricing sources and models utilizing market observable inputs. Our non-qualified deferred compensation plan assets consist of money market and mutual funds invested in domestic and international marketable securities that are directly observable in active markets and are therefore classified within Level 1. Our foreign currency derivative contracts are classified within Level 2 because these contracts are not actively traded and the valuation inputs are based on quoted prices and market observable data of similar instruments. Our borrowings under our Credit and Term Loan facilities are classified within Level 2 because these borrowings are not actively traded and have a variable interest rate structure based upon market rates currently available to us for debt with similar terms and maturities. See Note 11. Bridge Commitment Letter, Term Loan and Revolving Credit Facilities of the Notes to Consolidated Financial Statements in this Annual Report for more information on these borrowings. Our contingent consideration receivable, which was recorded in connection with the Software Integrity Divestiture, was classified within Level 3 because it was estimated using significant inputs that were not observable in the market. See Note 3. Discontinued Operation of the Notes to Consolidated Financial Statements in this Annual Report for additional information. Assets/Liabilities Measured at Fair Value on a Recurring Basis Assets and liabilities measured at fair value on a recurring basis are summarized below as of October 31, 2024: Fair Value Measurement Using Description Total Quoted Prices in Significant Other Significant (in thousands) Assets Cash equivalents: Money market funds $ 869,972 $ 869,972 $ — $ — U.S. Treasury, agency & T-bills 7,985 — 7,985 — Short-term investments: U.S. Treasury, agency & T-bills 19,449 — 19,449 — Corporate debt securities 105,256 — 105,256 — Asset-backed securities 29,164 — 29,164 — Prepaid and other current assets: Foreign currency derivative contracts 8,851 — 8,851 — Contingent consideration receivable 22,202 — — 22,202 Other long-term assets: Deferred compensation plan assets 386,757 386,757 — — Total assets $ 1,449,636 $ 1,256,729 $ 170,705 $ 22,202 Liabilities Accounts payable and accrued liabilities: Foreign currency derivative contracts $ 7,032 $ — $ 7,032 $ — Other long-term liabilities: Deferred compensation plan liabilities 386,757 386,757 — — Total liabilities $ 393,789 $ 386,757 $ 7,032 $ — Assets and liabilities measured at fair value on a recurring basis are summarized below as of October 31, 2023: Description Total Fair Value Measurement Using Quoted Prices in Significant Other Significant (in thousands) Assets Cash equivalents: Money market funds $ 10,129 $ 10,129 $ — $ — U.S. Treasury, agency & T-bills 2,994 — 2,994 — Short-term investments: U.S. Treasury, agency & T-bills 15,689 — 15,689 — Municipal bonds 499 — 499 — Corporate debt securities 102,375 — 102,375 — Asset-backed securities 33,076 — 33,076 — Prepaid and other current assets: Foreign currency derivative contracts 13,453 — 13,453 — Other long-term assets: Deferred compensation plan assets 297,180 297,180 — — Total assets $ 475,395 $ 307,309 $ 168,086 $ — Liabilities Accounts payable and accrued liabilities: Foreign currency derivative contracts $ 15,761 $ — $ 15,761 $ — Other long-term liabilities: Deferred compensation plan liabilities 297,180 297,180 — — Total liabilities $ 312,941 $ 297,180 $ 15,761 $ — Assets/Liabilities Measured at Fair Value on a Non-Recurring Basis Non-Marketable Equity Securities

Bridge Commitment Letter, Term

Bridge Commitment Letter, Term Loan and Revolving Credit Facilities	12 Months Ended
	Oct. 31, 2024
Debt Disclosure [Abstract]
Bridge Commitment Letter, Term Loan and Revolving Credit Facilities	Bridge Commitment Letter, Term Loan and Revolving Credit Facilities On January 15, 2024, we entered into the Bridge Commitment Letter with certain financial institutions that committed to provide, subject to the satisfaction of customary closing conditions, the Bridge Commitment. The Bridge Commitment currently provides for an aggregate principal amount of up to $10.6 billion. The proceeds of any borrowing under the Bridge Commitment will be used for the purpose of financing a portion of the cash consideration to be paid in the Ansys Merger and paying related fees and expenses in connection with the Ansys Merger and the other transactions contemplated by the Merger Agreement. The commitments to provide the Bridge Commitment may be terminated in whole or reduced in part, at our discretion. In addition, the Bridge Commitment Letter provides that net cash proceeds received from certain debt and equity issuances or the sale of certain businesses and assets, including the Software Integrity Divestiture, as well as term loan commitments under certain qualifying term loan facilities, will result in mandatory commitment reductions under the Bridge Commitment. On October 3, 2024, we reduced the Bridge Commitment by $1.1 billion to $10.6 billion following the closing of the Software Integrity Divestiture. On February 13, 2024, we entered into the Term Loan Agreement in connection with the financing of the pending Ansys Merger. The Term Loan Agreement provides us with the ability to borrow up to $4.3 billion at the closing of the Ansys Merger, subject to the satisfaction of customary closing conditions for similar facilities, for the purpose of financing a portion of the cash consideration to be paid in the Ansys Merger and paying related fees and expenses in connection with the Ansys Merger and the other transactions contemplated by the Merger Agreement. The Term Loan Agreement provides for two tranches of senior unsecured term loans: a $1.45 billion tranche (Tranche 1) that matures two years after funding and a $2.85 billion tranche (Tranche 2) that matures three years after funding. There was no outstanding balance under the Term Loan Agreement as of October 31, 2024. The Term Loan Agreement contains a financial covenant requiring that Synopsys maintain a maximum consolidated leverage ratio commencing the last day of the first fiscal quarter ending on or after the completion of the Ansys Merger, as well as other non-financial covenants. Under the Term Loan Agreement, borrowings will bear interest on the principal amount outstanding at a floating rate based on, at Synopsys’ election, (i) the Adjusted Term SOFR Rate (as defined in the Term Loan Agreement) plus an applicable margin based on the credit ratings of Synopsys ranging from 0.875% to 1.375% (in the case of Tranche 1) or 1.000% to 1.500% (in the case of Tranche 2) or (ii) the ABR (as defined in the Term Loan Agreement) plus an applicable margin based on the credit ratings of Synopsys ranging from 0.000% to 0.375% (in the case of Tranche 1) or 0.000% to 0.500% (in the case of Tranche 2). On May 14, 2024, a ticking fee began to accrue under the Term Loan Agreement in an amount equal to a rate per annum equal to 0.10% times the actual daily undrawn portion of the commitments in respect of the term loan facility. This ticking fee will accrue until the earlier of (i) termination or expiration of the commitments under the term loan facility or (ii) the funding of the commitments, at which point the accrued amount of the ticking fee will become payable. On February 13, 2024, we entered into a Sixth Amendment Agreement (the Sixth Amendment), which amended and restated our previous revolving credit agreement, dated as of December 14, 2022 (as amended and restated, the Revolving Credit Agreement). The Revolving Credit Agreement provides an unsecured $850.0 million committed multicurrency revolving credit facility and an unsecured uncommitted incremental revolving loan facility of up to $150.0 million. The maturity date of the revolving credit facility is December 14, 2027, which may be extended at our option. Under the Sixth Amendment, certain amendments became effective on February 13, 2024 and certain additional amendments will become effective upon the completion of the Ansys Merger. Upon the effective date, the Sixth Amendment amended the financial covenant to allow netting of the cash proceeds of certain debt incurred to finance the Ansys Merger as well as certain other modifications set forth therein. Upon the completion of the Ansys Merger, the Sixth Amendment, among other things: (i) amends the applicable margin used to determine the interest that accrues on loans and the facility fee payable under the revolving credit facility to be based on our credit ratings, (ii) amends the financial covenant thresholds under the financial covenant in the Revolving Credit Agreement requiring us to maintain a maximum consolidated leverage ratio and (iii) amends certain conditions to borrowing, other non-financial covenants and events of default. The Revolving Credit Agreement contains a financial covenant requiring us to maintain a maximum consolidated leverage ratio, as well as other non-financial covenants. As of October 31, 2024, we were in compliance with the financial covenant. Interest accrues on dollar-denominated loans at a floating rate based on, at Synopsys’ election, (i) the Adjusted Term SOFR Rate (as defined in the Revolving Credit Agreement) plus an applicable margin or (ii) the ABR (as defined in the Revolving Credit Agreement) plus an applicable margin. The applicable margin for Adjusted Term SOFR Rate based loans ranges from 0.785% to 0.975%, based upon Synopsys’ consolidated leverage ratio. The applicable margin for ABR based loans is 0.000%. In addition to the interest on any outstanding loans, Synopsys is also required to pay a facility fee on the entire portion of the revolving credit facility ranging from 0.09% to 0.15% based on Synopsys’ consolidated leverage ratio on the daily amount of the revolving commitment. Subject to the completion of the Ansys Merger, interest under the Revolving Credit Agreement will accrue on dollar-denominated loans at a floating rate based on, at Synopsys’ election, (i) the Adjusted Term SOFR Rate plus an applicable margin based on our credit ratings ranging from 0.795% to 1.200% or (ii) the ABR plus an applicable margin based on our credit ratings ranging from 0.000% to 0.200%. In addition to the interest on any outstanding loans, Synopsys will also be required to pay a facility fee on the entire portion of the revolving credit facility ranging from 0.080% to 0.175% based on the credit ratings of Synopsys on the daily amount of the revolving commitment. There was no outstanding balance under the Revolving Credit Agreement as of October 31, 2024 and October 31, 2023. In July 2018, we entered into a 12-year 220.0 million Renminbi (approximately $33.0 million) credit agreement with a lender in China to support our facilities expansion. Borrowings bear interest at a floating rate based on the 5-year Loan Prime Rate plus 0.74%. As of October 31, 2024, we had a $15.6 million outstanding balance under the agreement. The carrying amount of the short-term and long-term debt approximates the estimated fair value.

Leases

Leases	12 Months Ended
	Oct. 31, 2024
Leases [Abstract]
Leases	Leases We have operating lease arrangements for office space, data center, equipment and other corporate assets. These leases have various expiration dates through December 31, 2042, some of which include options to extend the leases for up to 10 years. Because we are not reasonably certain to exercise these renewal options, the options are not considered in determining the lease term and associated potential option payments are excluded from lease payments. The components of our lease expense during the period presented are as follows: Year Ended October 31, 2024 2023 2022 (in thousands) Operating lease expense (1) $ 92,222 $ 90,680 $ 85,631 Variable lease expense (2) 23,835 20,395 11,379 Total lease expense $ 116,057 $ 111,075 $ 97,010 (1) Operating lease expense includes immaterial amounts of short-term leases, net of sublease income. (2) Variable lease expense includes payments to lessors that are not fixed or determinable at lease commencement date. These payments primarily consist of maintenance, property taxes, insurance and variable indexed based payments. Supplemental cash flow information during the period presented is as follows: Year Ended October 31, 2024 2023 2022 (in thousands) Cash paid for amounts included in the measurement of operating lease liabilities (1) $ 99,905 $ 88,983 $ 83,858 ROU assets obtained in exchange for operating lease liabilities (2) $ 100,480 $ 101,390 $ 168,095 (1) Cash paid for amounts included in the measurement of operating lease liabilities included cash from discontinued operations of $5.2 million, $5.7 million and $6.3 million for the periods presented. (2) ROU assets obtained in exchange for operating lease liabilities included ROU assets from discontinued operations of $2.2 million, $1.2 million and $1.6 million for the periods presented. Lease term and discount rate information related to our operating leases as of the end of the period presented are as follows: As of October 31, 2024 2023 Weighted-average remaining lease term (in years) 7.59 8.44 Weighted-average discount rate 2.86 % 2.5 % The following table represents the maturities of our future lease payments due under operating leases as of October 31, 2024: Lease Payments Fiscal year (in thousands) 2025 $ 111,332 2026 112,130 2027 109,380 2028 94,005 2029 86,579 2030 and thereafter 233,161 Total future minimum lease payments 746,587 Less: Imputed interest 77,731 Total lease liabilities $ 668,856 In addition, certain facilities owned by us were leased to third parties under non-cancellable operating lease agreements. These leases have annual escalating payments and have expiration dates through March 31, 2031 in accordance with the terms and conditions of the existing agreement. The lease receipts from owned facilities, including sublease income from other facilities leased by us, due to us as of October 31, 2024, are as follows: Lease Receipts (in thousands) Fiscal year 2025 $ 24,479 2026 25,333 2027 26,452 2028 27,245 2029 28,063 2030 and thereafter 28,429 Total $ 160,001

Contingencies

Contingencies	12 Months Ended
	Oct. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies Legal Proceedings We are subject to routine legal proceedings, as well as demands, claims and threatened litigation that arise in the normal course of our business. The ultimate outcome of any litigation is often uncertain and unfavorable outcomes could have a negative impact on our results of operations and financial condition. We regularly review the status of each significant matter and assess its potential financial exposure. If the potential loss from any claim or legal proceeding is considered probable and the amount is estimable, we accrue a liability for the estimated loss. Legal proceedings are inherently uncertain and as circumstances change, it is possible that the amount of any accrued liability may increase, decrease, or be eliminated. We have determined that, except as set forth below, no disclosure of estimated loss is required for a claim against us because: (1) there is not a reasonable possibility that a loss exceeding amounts already recognized (if any) may be incurred with respect to such claim; (2) a reasonably possible loss or range of loss cannot be estimated; or (3) such estimate is immaterial. Mentor Patent Litigation Prior to the legal settlement as further described below, we were engaged in complex patent litigation with Mentor Graphics Corporation (Mentor) involving several actions in different forums. We succeeded to the litigation when we acquired Emulation & Verification Engineering S.A. on October 4, 2012. Legal Settlement In March 2017, Siemens PLM Software (now Siemens Industry Software Inc. or SISW)) acquired Mentor. On June 29, 2018, we, SISW and Mentor settled all outstanding patent litigation between us and Mentor for a $65.0 million payment made from us to Mentor. As a result of the settlement, the litigation with Mentor was dismissed and the injunction entered in connection with that litigation was vacated. The settlement included mutual seven-year patent cross-licenses between us and SISW, and between us and Mentor. We and Mentor also amended an existing interoperability agreement to collaborate on a wide range of EDA products for the benefit of our mutual customers (the interoperability amendment). The interoperability amendment includes a one-time termination charge between $0.0 and $25.0 million, payable to SISW under certain conditions. Mentor no longer exists as an independent entity and is succeeded by SISW. In June 2024, the parties extended the existing patent cross-license to December 31, 2031, and entered into a new cross-license of patents related to certain computer-aided engineering technology. The new cross-license is conditioned on the close of the Ansys Merger and expires on December 31, 2031. The interoperability amendment expires by its terms on June 29, 2025. Tax Matters We undergo examination from time to time by U.S. and foreign authorities for non-income based taxes, such as sales, use and value-added taxes, and are currently under examination by tax authorities in certain jurisdictions. If the potential loss from such examinations is considered probable and the amount or the range of loss could be estimated, we would accrue a liability for the estimated expense. In addition to the foregoing, we are, from time to time, party to various other claims and legal proceedings in the ordinary course of our business, including with tax and other governmental authorities. For a description of certain of these other matters, refer to Note 18. Income Taxes of the Notes to Consolidated Financial Statements in this Annual Report .

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	12 Months Ended
	Oct. 31, 2024
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) The components of accumulated other comprehensive income (loss), on an after-tax basis where applicable, are as follows: As of October 31, 2024 2023 (in thousands) Cumulative currency translation adjustments $ (161,954) $ (170,104) Unrealized gains (losses) on derivative instruments, net of taxes (18,800) (25,224) Unrealized gains (losses) on available-for-sale securities, net of taxes 374 (1,086) Total $ (180,380) $ (196,414) The effect of amounts reclassified out of each component of accumulated other comprehensive income (loss) into net income is as follows: Year Ended October 31, 2024 2023 2022 (in thousands) Reclassifications: Gains (losses) on cash flow hedges, net of taxes Revenues $ 3,089 $ (9,942) $ 10,975 Operating expenses 112 (15,334) (15,869) Total $ 3,201 $ (25,276) $ (4,894) Amounts reclassified in fiscal 2024, 2023, and 2022 primarily consisted of gains (losses) from our cash flow hedging activities. See Note 9. Financial Assets and Liabilities of the Notes to Consolidated Financial Statements in this Annual Report .

Stock Repurchase Program

Stock Repurchase Program	12 Months Ended
	Oct. 31, 2024
Stock Repurchase Program [Abstract]
Stock Repurchase Program	Stock Repurchase Program In fiscal 2022, our Board of Directors approved a stock repurchase program (the Program) with authorization to purchase up to $1.5 billion of our common stock. As of October 31, 2024, $194.3 million remained available for future repurchases under the Program. However, in connection with the pending Ansys Merger, we have suspended the Program until we reduce our expected debt levels. Stock repurchase activities as well as the reissuance of treasury stock for employee stock-based compensation purposes are as follows: Year Ended October 31, 2024 2023 (1) 2022 (in thousands, except per share price) Shares repurchased 74 2,992 3,609 Average purchase price per share 608.91 $ 387.92 $ 314.51 Aggregate purchase price 45,000 $ 1,160,724 $ 1,135,000 Reissuance of treasury stock 2,133 2,670 2,922 (1) Excludes 73,903 shares and $45.0 million equity forward contract that was settled in November 2023.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Oct. 31, 2024
Share-Based Payment Arrangement [Abstract]
Employee Benefit Plans	Employee Benefit Plans Employee Stock Purchase Plan Under our Employee Stock Purchase Plan (ESPP), participating employees are granted the right to purchase shares of common stock at a price per share that is 85% of the lesser of the fair market value of the shares at (1) the beginning of an offering period (generally, a rolling two year period) or (2) the purchase date (generally occurring at the end of each semi-annual purchase period), subject to the terms of ESPP, including a limit on the number of shares that may be purchased in a purchase period. On April 12, 2022, our stockholders approved amendments to the ESPP to increase the number of shares of common stock authorized for issuance under the plan by 2.0 million shares. During fiscal 2024, 2023 and 2022, we issued 0.5 million, 0.6 million, and 0.7 million shares, respectively, under the ESPP at average per share prices of $315.24, $266.82 and $195.48, respectively. As of October 31, 2024, 12.9 million shares of common stock were reserved for future issuance under the ESPP. Equity Compensation Plans 2006 Employee Equity Incentive Plan. On April 25, 2006, our stockholders approved the 2006 Employee Equity Incentive Plan (2006 Employee Plan), which provides for the grant of incentive stock options, non-statutory stock options, restricted stock awards, restricted stock unit awards, stock appreciation rights and other forms of equity compensation, including performance stock awards and performance cash awards, as determined by the plan administrator. The terms and conditions of each type of award are set forth in the 2006 Employee Plan and in the award agreements governing particular awards. Restricted stock units are granted under the 2006 Employee Plan as part of our incentive compensation program. In general, restricted stock units vest over three two On April 10, 2024, our stockholders amended the 2006 Employee Plan to, among other things, increase the number of shares of common stock reserved for future issuance under the plan by 3.4 million shares. As of October 31, 2024, an aggregate of 1.3 million stock options and 3.9 million restricted stock units were outstanding, and 14.5 million shares were available for future issuance under the 2006 Employee Plan. 2017 Non-Employee Directors Equity Incentive Plans. On April 6, 2017, our stockholders approved the 2017 Non-Employee Directors Equity Incentive Plan (2017 Directors Plan). The 2017 Directors Plan provides for equity awards to non-employee directors in the form of stock options, restricted stock units, restricted stock or a combination thereof. On April 6, 2017, our stockholders approved an aggregate of 0.45 million shares of common stock reserved under the 2017 Directors Plan. We grant restricted stock awards and options under the 2017 Directors Plan. Restricted stock awards generally vest on an annual basis and options vest over a period of three years. As of October 31, 2024, 3,751 shares of restricted stock awards were unvested and 12,792 stock options were outstanding, and a total of 365,203 shares of common stock were reserved for future issuance under the 2017 Directors Plan. Other Assumed Stock Plans through Acquisitions. We have assumed certain outstanding stock awards of acquired companies, including restricted stock units and options. If these assumed equity awards are canceled, forfeited or expire unexercised, the underlying shares do not become available for future grant. As of October 31, 2024, 18 thousand shares of our common stock remained subject to such outstanding assumed equity awards. Restricted Stock Units. The following table contains information concerning activities related to restricted stock units granted under the 2006 Employee Plan and assumed from acquisitions including those associated with our discontinued operations: Restricted Stock Units Outstanding (1) Weighted Weighted Aggregate (in thousands, except per share amounts and years) Balance at October 31, 2021 4,187 $ 193.58 1.39 Granted (2) 2,402 $ 323.46 Vested (3) (1,589) $ 170.36 $ 529,766 Forfeited (362) $ 228.70 Balance at October 31, 2022 4,638 $ 265.76 1.32 Granted (2) 2,083 $ 394.34 Vested (3) (1,839) $ 237.19 $ 706,136 Forfeited (365) $ 283.29 Balance at October 31, 2023 4,517 $ 335.26 1.41 Granted (2) 1,620 $ 543.69 Vested (3) (1,778) $ 303.23 $ 962,127 Forfeited (460) $ 395.74 Balance at October 31, 2024 3,899 $ 429.36 1.35 (1) No restricted stock units were assumed in connection with acquisitions in the last three fiscal years. (2) The number of granted restricted stock units includes those granted to senior management with market-based and performance-based vesting criteria (in addition to service-based vesting criteria) (market-based RSUs) reported at the maximum possible number of shares that may ultimately be issuable if all applicable market-based and performance-based criteria are achieved at their maximum levels and all applicable service-based criteria are fully satisfied. (3) The number of vested restricted stock units includes shares that were withheld on behalf of employees to satisfy the minimum statutory tax withholding requirements. Stock Options. The following table summarizes stock option activity and includes stock options granted under all equity plans including those associated with our discontinued operations: Options Outstanding Shares Under Stock Option (1) Weighted- Weighted- Aggregate (in thousands, except per share amounts and years) Balance at October 31, 2021 3,107 $ 109.51 3.81 $ 694,921 Granted 293 $ 342.86 Exercised (1,126) $ 86.24 Canceled/forfeited/expired (114) $ 164.46 Balance at October 31, 2022 2,160 $ 150.37 3.57 $ 328,120 Granted 294 $ 361.64 Exercised (849) $ 109.83 Canceled/forfeited/expired (90) $ 245.86 Balance at October 31, 2023 1,515 $ 208.49 3.70 $ 376,563 Granted 238 $ 551.41 Exercised (429) $ 141.83 Canceled/forfeited/expired (42) $ 376.97 Balance at October 31, 2024 1,282 $ 288.91 3.63 $ 301,781 Vested and expected to vest as of October 31, 2024 1,282 $ 288.91 3.63 $ 301,781 Exercisable at October 31, 2024 810 $ 197.95 2.54 $ 259,550 (1) No stock options were assumed in connection with acquisitions in the last three fiscal years, but the balance at fiscal year-end includes certain stock options that were previously assumed in connection with acquisitions. The aggregate intrinsic value in the preceding table represents the pre-tax intrinsic value based on stock options with an exercise price less than our closing stock price of $518.40 at the end of fiscal 2024. The pre-tax intrinsic value of options exercised and their average exercise prices including those associated with our discontinued operations are: Year Ended October 31, 2024 2023 2022 (in thousands, except per share price) Intrinsic value $ 185,663 $ 241,385 $ 273,524 Average exercise price per share $ 141.83 $ 109.83 $ 86.24 Restricted Stock Units and Stock Options. The following table contains additional information concerning activities related to stock options and restricted stock units that were granted under the 2006 Employee Plan and assumed from acquisitions including those associated with our discontinued operations: Available for Grant (1)(2) (in thousands) Balance at October 31, 2021 13,751 Options granted (2) (286) Options canceled/forfeited/expired (2) 114 Restricted stock units granted (1)(3) (4,083) Restricted stock units forfeited (1) 615 Additional shares reserved 3,000 Balance at October 31, 2022 13,111 Options granted (2) (294) Options canceled/forfeited/expired (2) 89 Restricted stock units granted (1)(3) (3,540) Restricted stock units forfeited (1) 620 Additional shares reserved 3,300 Balance at October 31, 2023 13,286 Options granted (2) (238) Options canceled/forfeited/expired (2) 40 Restricted stock units granted (1)(3) (2,754) Restricted stock units forfeited (1) 782 Additional shares reserved 3,400 Balance at October 31, 2024 14,516 (1) Restricted stock units includes awards granted under the 2006 Employee Plan and assumed through acquisitions. The number of RSUs reflects the application of the award multiplier of 1.70 as described above. (2) Options granted by us are not subject to the award multiplier ratio described above. (3) The number of granted restricted stock units includes market-based RSUs reported at the maximum possible number of shares that may ultimately be issuable if all applicable market-based and performance-based criteria are achieved at their maximum levels and all applicable service-based criteria are fully satisfied. Restricted Stock Awards . The following table summarizes restricted stock award activities under the 2005 Directors Plan and 2017 Directors Plan: Restricted Weighted-Average (in thousands, except per share amounts) Unvested at October 31, 2021 5 $ 261.01 Granted 5 $ 310.02 Vested (5) $ 261.01 Forfeited — $ — Unvested at October 31, 2022 5 $ 310.02 Granted 5 $ 387.79 Vested (5) $ 310.02 Forfeited — $ — Unvested at October 31, 2023 5 $ 387.79 Granted 3 $ 561.23 Vested (4) $ 382.88 Forfeited — $ — Unvested at October 31, 2024 4 $ 541.51 Valuation and Expense of Stock-Based Compensation. We estimate the fair value of stock options and employee stock purchase rights under the ESPP on the grant date. The value of awards expected to vest is recognized as expense over the applicable service periods. We use the Black-Scholes option-pricing model to determine the fair value of stock options and employee stock purchase plan rights . The Black-Scholes option-pricing model incorporates various assumptions including expected volatility, expected term and interest rates. The expected volatility for both stock options and employee stock purchase rights is estimated by a combination of implied volatility for publicly traded options of our common stock with a term of six months or longer and the historical stock price volatility over the estimated expected term of such awards, which is based on historical experience. Restricted stock units are valued based on the closing price of our common stock on the grant date. We use the straight-line attribution method to recognize stock-based compensation costs over the service period of the award except for performance-based RSUs and market-based RSUs. We estimate the probability of achievement of applicable performance goals for performance-based RSUs in each reporting period and recognize related stock-based compensation expense using the graded-vesting method. The amount of stock-based compensation expense recognized in any period can vary based on the attainment or expected attainment of the various performance goals. If such performance goals are not ultimately met, no compensation expense is recognized and any previously recognized compensation expense is reversed. We estimated the fair value of market-based RSUs on the grant date using a Monte Carlo simulation model. Under the award agreements, the vesting of the market-based RSUs is contingent on achieving total stockholder return (TSR) relative to a peer index as well as revenue growth metrics. The maximum potential awards that may be earned are 187.5% of the target number of the initial awards. For market-based RSUs granted in February, May, August and December 2022, the performance period during which the achievement goals was measured is fiscal 2022 and fiscal 2023. Following the achievement of the TSR target, revenue growth metrics, and service conditions, the first tranche of the awards vested in December 2023 and the second tranche of the awards will vest in December 2024. For market-based RSUs granted in February and August 2023, the performance period during which the achievement goals will be measured is fiscal 2023, fiscal 2024 and fiscal 2025. The awards will vest in December 2025 if the TSR target, revenue growth metrics, and service conditions are achieved. For market-based RSUs granted in December 2023, the performance period during which the achievement goals will be measured is fiscal 2024, fiscal 2025 and fiscal 2026. The awards will vest in December 2026 if the TSR target, revenue growth metrics, and service conditions are achieved. The assumptions presented in the following table are used to estimate the fair value of stock options and employee stock purchase rights granted under our stock plans: Year Ended October 31, 2024 2023 2022 Stock Options: Expected life (in years) 4.1 4.1 4.1 Risk-free interest rate 3.62%- 4.61% 3.8% - 4.80% 1.07% - 4.42% Volatility 32.09% -35.42% 32.74% - 36.16% 32.28%- 37.04% Weighted average estimated fair value $178.67 $120.33 $98.07 ESPP: Expected life (in years) 0.5 - 2.0 0.5 - 2.0 0.5 - 2.0 Risk-free interest rate 3.88% - 5.27% 4.85% - 5.38% 0.67% - 3.44% Volatility 31.40% - 34.39% 28.03% - 35.27% 34.51% - 38.69% Weighted average estimated fair value $179.10 $120.82 $102.63 The grant date fair value of the market-based RSUs and the assumptions used in the Monte Carlo simulation model to determine the grant date fair value during the periods are as follows: Year Ended October 31, 2024 2023 2022 Expected life (in years) 2.89 0.90 - 2.70 1.16 - 1.69 Risk-free interest rate 4.41% 4.36% - 4.80% 1.33% - 3.46% Volatility 34.03% 34.79% - 42.86% 33.01% - 37.80% Grant date fair value $600.29 $357.29 - $465.79 $280.52 - $412.20 The compensation cost recognized in the consolidated statements of income for our stock compensation arrangements is as follows: Year Ended October 31, 2024 2023 2022 (in thousands) Cost of products $ 66,403 $ 49,896 $ 43,618 Cost of maintenance and service 32,189 29,572 24,146 Research and development expense 359,244 282,540 233,772 Sales and marketing expense 121,524 91,082 70,607 General and administrative expense 78,575 60,004 49,606 Stock-based compensation expense from continuing operations before taxes 657,935 513,094 421,749 Stock-based compensation expense from discontinued operations before taxes 34,381 50,198 37,280 Total stock-based compensation expense before taxes 692,316 563,292 459,029 Income tax benefit (115,271) (90,915) (74,271) Stock-based compensation expense after taxes $ 577,045 $ 472,377 $ 384,758 As of October 31, 2024, we had $1.3 billion of total unrecognized stock-based compensation expense relating to options, RSUs and restricted stock awards, which is expected to be recognized over a weighted average period of 2.3 years. As of October 31, 2024, we had $111.2 million of total unrecognized stock-based compensation expense relating to the ESPP, which is expected to be recognized over a period of 2.0 years. Deferred Compensation Plan. We maintain the Synopsys Deferred Compensation Plan (Deferred Plan), which permits eligible employees to defer up to 50% of their annual cash base compensation and up to 100% of their eligible cash variable compensation. Amounts may be withdrawn from the Deferred Plan pursuant to elections made by the employees in accordance with the terms of the plan. Since the inception of the Deferred Plan, we have not made any matching or discretionary contributions to the Deferred Plan. There are no Deferred Plan provisions that provide for any guarantees or minimum return on investments. Undistributed amounts under the Deferred Plan are subject to the claims of our creditors. Deferred plan assets and liabilities are as follows: As of October 31, 2024 2023 (in thousands) Plan assets recorded in other long-term assets $ 386,757 $ 297,180 Plan liabilities recorded in other long-term liabilities (1) $ 386,757 $ 297,180 (1) Undistributed deferred compensation balances due to participants. Income or loss from the change in fair value of the Deferred Plan assets is recorded in interest and other income (expense), net. The increase or decrease in the fair value of the undistributed Deferred Plan obligation is recorded in total cost of revenue and operating expense. The following table summarizes the impact of the Deferred Plan: Year Ended October 31, 2024 2023 2022 (in thousands) Increase (reduction) to cost of revenue and operating expense $ 85,446 $ 20,196 $ (67,516) Interest and other income (expense), net 85,446 20,196 (67,516) Net increase (decrease) to net income $ — $ — $ — Other Retirement Plans. We sponsor various defined contribution retirement plans for our eligible U.S. and non-U.S. employees. Total contributions to these plans were $51.3 million, $50.8 million, and $44.0 million in fiscal 2024, 2023, and 2022, respectively. For employees in the United States and Canada, we match pre-tax employee contributions up to a maximum of U.S. $3,000 and Canadian $4,000, respectively, per participant per year. Certain of our international subsidiaries sponsor defined benefit retirement plans. The unfunded projected benefit obligation for these defined benefit retirement plans as of October 31, 2024 and 2023 was immaterial and recorded in other long-term liabilities in our consolidated balance sheets.

Net Income Per Share

Net Income Per Share	12 Months Ended
	Oct. 31, 2024
Earnings Per Share [Abstract]
Net Income Per Share	Net Income Per Share The table below reconciles the weighted average common shares used to calculate basic net income per share with the weighted average common shares used to calculate diluted net income per share: Year Ended October 31, 2024 2023 2022 (in thousands, except per share amounts) Numerator: Net income from continuing operations attributed to Synopsys $ 1,441,710 $ 1,227,045 $ 970,225 Net income from discontinued operations attributed to Synopsys 821,670 2,843 14,369 Net income attributed to Synopsys $ 2,263,380 $ 1,229,888 $ 984,594 Denominator: Weighted average common shares for basic net income per share 153,138 152,146 153,002 Dilutive effect of common share equivalents from equity-based compensation 2,806 3,049 3,483 Weighted average common shares for diluted net income per share 155,944 155,195 156,485 Net income per share attributed to Synopsys - basic: Continuing operations $ 9.41 $ 8.06 $ 6.34 Discontinued operations 5.37 0.02 0.10 Basic net income per share $ 14.78 $ 8.08 $ 6.44 Net income per share attributed to Synopsys - diluted: Continuing operations $ 9.25 $ 7.91 $ 6.20 Discontinued operations 5.26 0.01 0.09 Diluted net income per share $ 14.51 $ 7.92 $ 6.29 Anti-dilutive employee stock-based awards excluded 229 475 281

Income Taxes

Income Taxes	12 Months Ended
	Oct. 31, 2024
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The domestic and foreign components of our total income before provision for income taxes are as follows: Year Ended October 31, 2024 2023 2022 (in thousands) United States $ 1,333,132 $ 1,144,410 $ 1,028,829 Foreign 180,726 161,060 74,623 Total income before provision for income taxes $ 1,513,858 $ 1,305,470 $ 1,103,452 The components of the provision (benefit) for income taxes are as follows: Year Ended October 31, 2024 2023 2022 (in thousands) Current: Federal $ 345,859 $ 252,186 $ 109,030 State 19,808 23,042 23,593 Foreign 110,021 22,869 43,076 475,688 298,097 175,699 Deferred: Federal (312,677) (191,249) (38,901) State (39,164) (219) (1,067) Foreign (24,129) (16,441) 3,654 (375,970) (207,909) (36,314) Provision (benefit) for income taxes $ 99,718 $ 90,188 $ 139,385 The provision (benefit) for income taxes differs from the taxes computed with the statutory federal income tax rate as follows: Year Ended October 31, 2024 2023 2022 (in thousands) Statutory federal tax $ 317,912 $ 274,149 $ 231,723 State tax (benefit), net of federal effect 48,393 438 (2,870) Federal tax credits (70,119) (60,500) (55,708) Tax (benefit) on foreign earnings 3,316 (17,571) 23,709 Foreign-derived intangible income deduction (104,835) (80,034) (38,816) Tax settlements — (23,752) — Stock-based compensation (43,419) (39,995) (50,469) Changes in valuation allowance (57,371) 29,631 19,794 Other 5,841 7,822 12,022 Provision (benefit) for income taxes $ 99,718 $ 90,188 $ 139,385 On December 22, 2017, the Tax Cuts and Jobs Act (Tax Act) was enacted, which significantly changed prior U.S. tax law and includes numerous provisions that affect our business. Effective in our fiscal 2023 year, the Tax Act requires that research and development expenditures are capitalized and amortized instead of being deducted when incurred. Domestic research is capitalized over five years and foreign research is capitalized over fifteen years. Capitalization of research and development expenditures also results in a corresponding deferred tax benefit and decreased our effective tax rate due to increasing the foreign-derived intangible income deduction. We have provided for foreign withholding taxes on undistributed earnings of certain of our foreign subsidiaries to the extent such earnings are no longer considered to be indefinitely reinvested in the operations of those subsidiaries. Where foreign subsidiaries are considered indefinitely reinvested, and if the tax effect of undistributed earnings and other outside basis differences were recognized, the nature of taxes expected would primarily be withholding, taxes in non-conforming states, and taxes on intermediate holding companies outside of the U.S., net of foreign tax credits where available. As of October 31, 2024, the taxes due, after allowable foreign tax credits, are not expected to be material. The significant components of deferred tax assets and liabilities are as follows: As of October 31, 2024 2023 (in thousands) Net deferred tax assets: Deferred tax assets: Deferred revenue $ 37,849 $ 37,641 Deferred compensation 73,869 69,824 Intangible and depreciable assets 65,489 94,299 Capitalized research and development costs 978,085 591,617 Stock-based compensation 74,934 64,326 Tax loss carryovers 37,787 36,804 Foreign tax credit carryovers 42,534 41,584 Research and other tax credit carryovers 107,643 178,416 Operating Lease Liabilities 108,235 118,679 Accruals and reserves 49,935 27,636 Gross deferred tax assets 1,576,360 1,260,826 Valuation allowance (170,672) (221,713) Total deferred tax assets 1,405,688 1,039,113 Deferred tax liabilities: Intangible assets 80,034 98,305 Operating lease Right-of-Use-Assets 84,512 94,068 Accruals and reserves — 602 Undistributed earnings of foreign subsidiaries 8,800 8,900 Other 21,641 19,169 Total deferred tax liabilities 194,987 221,044 Net deferred tax assets $ 1,210,701 $ 818,069 It is more likely than not that the results of future operations will be able to generate sufficient taxable income to realize the net deferred tax assets. The valuation allowance provided against our deferred tax assets as of October 31, 2024 is mainly attributable to foreign tax credits available to non-U.S. subsidiaries and the California research credits. The valuation allowance decreased by a net of $51.0 million in fiscal 2024, primarily related to anticipated utilization of California research credits. We have the following tax loss and credit carryforwards available to offset future income tax liabilities: Carryforward Amount Expiration (in thousands) Federal net operating loss carryforward $ 69,062 2025-2043 Federal research credit carryforward 6,214 2025-2035 Federal foreign tax credit carryforward 34,217 2034 International foreign tax credit carryforward 5,337 Indefinite International net operating loss carryforward 51,326 2027-Indefinite California research credit carryforward 151,380 Indefinite Other state research credit carryforward 25,621 2027-2044 State net operating loss carryforward 138,482 2028-2045 The federal and state net operating loss carryforward is from acquired companies and the annual use of such loss is subject to significant limitations under Internal Revenue Code Section 382. Foreign tax credits may only be used to offset tax attributable to foreign source income. The gross unrecognized tax benefits decreased by approximately $3.0 million during fiscal 2024 resulting in gross unrecognized tax benefits of $61.9 million as of October 31, 2024. A reconciliation of the beginning and ending balance of gross unrecognized tax benefits is summarized as follows: As of October 31, 2024 2023 (in thousands) Beginning balance $ 64,880 $ 71,898 Increases in unrecognized tax benefits related to prior year tax positions 1,106 211 Decreases in unrecognized tax benefits related to prior year tax positions (8,639) (25,678) Increases in unrecognized tax benefits related to current year tax positions 8,036 8,029 Reductions in unrecognized tax benefits due to lapse of applicable statute of limitations (4,380) (249) Increases in unrecognized tax benefits acquired 161 165 Changes in unrecognized tax benefits due to foreign currency translation 690 10,504 Ending balance $ 61,854 $ 64,880 As of October 31, 2024 and 2023, approximately $61.9 million and $64.9 million, respectively, of the unrecognized tax benefits would affect our effective tax rate if recognized upon resolution of the uncertain tax positions. Interest and penalties related to estimated obligations for tax positions taken in our tax returns are recognized as a component of income tax expense (benefit) in the consolidated statements of income and totaled approximately $(1.0) million , $(10.6) million and $0.8 million for fiscal years 2024, 2023 and 2022, respectively. As of October 31, 2024 and 2023, the combined amount of accrued interest and penalties related to tax positions taken on our tax returns were approximately $1.1 million and $2.1 million, respectively. The timing of the resolution of income tax examinations, and the amounts and timing of various tax payments that are part of the settlement process, are highly uncertain. Variations in such amounts and/or timing could cause large fluctuations in the balance sheet classification of current and non-current assets and liabilities. We believe that in the coming 12 months, it is reasonably possible that either certain audits and ongoing tax litigation will conclude or the statute of limitations on certain state and foreign income and withholding taxes will expire, or both. Given the uncertainty as to ultimate settlement terms, the timing of payment and the impact of such settlements on other uncertain tax positions, the range of the estimated potential decrease in underlying unrecognized tax benefits is between $0.0 and $12.0 million. We and/or our subsidiaries remain subject to tax examination in the following jurisdictions: Jurisdiction Year(s) Subject to Examination United States Fiscal years after 2020 California Fiscal years after 2019 Ireland Fiscal years after 2019 Japan Fiscal years after 2019 Korea Fiscal years after 2020 Taiwan Fiscal years after 2022 China Fiscal years after 2014 India Fiscal years after 2019 In addition, we have made acquisitions with operations in several of our significant jurisdictions which may have years subject to examination different from the years indicated in the above table. Non-U.S. Examinations Hungarian Tax Authority In 2017, the Hungarian Tax Authority (the HTA) assessed withholding taxes of approximately $25.0 million and interest and penalties of $11.0 million, against our Hungary subsidiary (Synopsys Hungary). Synopsys Hungary contested the assessment with the Hungarian Administrative Court (Administrative Court). In 2018, Synopsys Hungary paid the assessment. Following years of litigation, the Administrative Court issued its written decision in favor of Synopsys Hungary on May 17, 2023, and the HTA subsequently refunded Synopsys Hungary the tax, penalty and interest paid in fiscal 2018, as well as additional interest all totaling $39.1 million (including foreign currency effects). During the third quarter of fiscal 2023, we released our unrecognized tax benefit and offsetting U.S. foreign tax credits, resulting in a net benefit of $23.8 million. We are also under examination by the tax authorities in certain other jurisdictions. No material assessments have been proposed in these examinations. Legislative Developments Effective our fiscal 2024, we are subject to the new 15% corporate alternative minimum tax (CAMT) enacted as part of the Inflation Reduction Act of 2022. We do not expect any impact of CAMT in fiscal 2024, due to our regular tax liability exceeding CAMT. The details of the computation will be subject to final regulations to be issued by the U.S. Department of the Treasury. We will monitor regulatory developments and will continue to evaluate the impact, if any, of the minimum tax. The IR Act imposes a 1% excise tax on the fair market value of stock repurchases made by covered corporations after December 31, 2022. The total taxable value of shares repurchased is reduced by the fair market value of any newly issued shares during the taxable year. As of October 31, 2024, this does not have any impact on our consolidated financial statements. On June 27, 2024, California enacted SB-167, which suspends the use of California net operating loss and limits the use of California research tax credits to $5 million for our fiscal 2025-2027. On June 29, 2024, California enacted SB-175, which provides a refund mechanism effective beginning in our fiscal 2025 for the incremental tax that was paid as a result of SB-167. The Organization for Economic Co-operation and Development (OECD) has a two-pillar solution to address tax challenges arising from digitalization of the economy. Included in this two-pillar solution is the Pillar Two Model Rules (Pillar Two) which defines a global minimum tax rules and includes a 15% minimum tax rate. Various countries have started to enact new laws related to Pillar Two, including certain new laws effective beginning in fiscal 2025. Based on our preliminary analysis, we are not expecting the impact of Pillar 2 to be material.

Interest and Other Income (Expe

Interest and Other Income (Expense), Net	12 Months Ended
	Oct. 31, 2024
Other Income and Expenses [Abstract]
Interest and Other Income (Expense), Net	Interest and Other Income (Expense), Net The following table presents the components of interest and other income (expense), net: Year Ended October 31, 2024 2023 2022 (in thousands) Interest income $ 67,017 $ 36,674 $ 8,545 Interest expense (35,161) (1,178) (1,698) Gains (losses) on assets related to deferred compensation plan 85,446 20,196 (67,516) Gain on sale of strategic investments 55,077 — — Foreign currency exchange gains (losses) 6,294 (1,529) 4,694 Other, net (20,526) (21,932) 10,713 Total $ 158,147 $ 32,231 $ (45,262)

Segment Disclosure

Segment Disclosure	12 Months Ended
	Oct. 31, 2024
Segment Reporting [Abstract]
Segment Disclosure	Segment Disclosure Segment reporting is based upon the “management approach,” i.e., how management organizes our operating segments for which separate financial information is (1) available and (2) evaluated regularly by the CODM in deciding how to allocate resources and in assessing performance. Our CODM is our CEO. We have two reportable segments: (1) Design Automation, which includes our advanced silicon design, verification products and services, system integration products and services, digital, custom and FPGA IC design software, verification software and hardware products, manufacturing software products and other; and (2) Design IP, which includes our interface, foundation, security, and embedded processor IP, IP subsystems, and IP implementation services. The financial information provided to and used by the CODM to assist in making operational decisions, allocating resources, and assessing performance includes consolidated financial information as well as revenue, adjusted operating income, and adjusted operating margin information for the Design Automation, and Design IP segments, accompanied by disaggregated information relating to revenue by geographic region. The Software Integrity business constituted its own reportable segment under Topic 280. In accordance with applicable accounting guidance, the results of the Software Integrity business are presented as discontinued operations in the consolidated statements of income and, as such, have been excluded from both continuing operations and segment results for all periods presented. See Note 3. Discontinued Operations of the Notes to Consolidated Financial Statements in this Annual Report. Information by reportable segment is as follows: Year Ended October 31, 2024 2023 2022 (in thousands) Total Segments: Revenue $ 6,127,436 $ 5,318,014 $ 4,615,714 Adjusted operating income 2,362,059 1,928,027 1,579,899 Adjusted operating margin 39 % 36 % 34 % Design Automation: Revenue $ 4,221,122 $ 3,775,288 $ 3,300,173 Adjusted operating income 1,631,885 1,413,926 1,176,101 Adjusted operating margin 39 % 37 % 36 % Design IP: Revenue $ 1,906,314 $ 1,542,726 $ 1,315,541 Adjusted operating income 730,174 514,101 403,798 Adjusted operating margin 38 % 33 % 31 % Certain operating expenses are not allocated to the segments and are managed at a consolidated level. The unallocated expenses managed at a consolidated level, including amortization of acquired intangible assets, stock-based compensation, changes in the fair value of deferred compensation plan, restructuring charges, and acquisition/divestiture related items, are presented in the table below to provide a reconciliation of the total adjusted operating income from segments to our consolidated operating income from continuing operations: Year Ended October 31, 2024 2023 2022 (in thousands) Total segment adjusted operating income $ 2,362,059 $ 1,928,027 $ 1,579,899 Reconciling items: Amortization of acquired intangible assets (124,234) (54,576) (56,311) Stock-based compensation expense (657,935) (513,094) (421,749) Deferred compensation plan (85,446) (20,196) 67,516 Restructuring charges — (53,091) (11,221) Acquisition/divestiture related items (138,733) (13,831) (9,420) Total operating income $ 1,355,711 $ 1,273,239 $ 1,148,714 The CODM does not use total assets by segment to evaluate segment performance or allocate resources. As a result, total assets by segment are not disclosed. In allocating revenue to particular geographic areas, the CODM considers where individual “seats” or licenses to our products are located. Revenue is defined as revenue from external customers. Revenue and property and equipment, net, related to operations in the United States and other geographic areas are: Year Ended October 31, 2024 2023 2022 (in thousands) Revenue: United States $ 2,739,756 $ 2,462,009 $ 2,094,470 Europe 614,584 514,780 430,369 China 989,524 855,023 774,265 Korea 773,018 625,502 523,501 Other 1,010,554 860,700 793,109 Consolidated $ 6,127,436 $ 5,318,014 $ 4,615,714 As of October 31, 2024 2023 (in thousands) Property and Equipment, net: United States $ 335,306 $ 334,272 Other 227,700 215,565 Total $ 563,006 $ 549,837 Geographic revenue data for multi-regional, multi-product transactions reflect internal allocations and are therefore subject to certain assumptions and to our allocation methodology. One customer, including its subsidiaries, accounted for 12.6%, 13.5%, and 12.8% of our consolidated revenue in fiscal 2024, 2023, and 2022, respectively. No customer accounted for over 10% of our accounts receivable as of October 31, 2024. One customer accounted for 12.1% of our accounts receivable as of October 31, 2023.

Restructuring Charges

Restructuring Charges	12 Months Ended
	Oct. 31, 2024
Restructuring and Related Activities [Abstract]
Restructuring Charges	Restructuring Charges In the first quarter of fiscal 2023, we initiated a restructuring plan for involuntary employee terminations as part of a business reorganization (the 2023 Plan). The 2023 Plan was substantially completed in the third quarter of fiscal 2023 and total charges under the 2023 Plan consisting primarily of severance costs and facility exit costs were $77.0 million, of which $23.9 million were related to discontinued operations. During fiscal 2024, we made payments of $3.6 million related to continuing operations and $0.5 million related to discontinued operations under the 2023 Plan. As of October 31, 2024, the payroll and related benefits liabilities of $0.8 million were recorded in accounts payable and accrued liabilities, and the remaining outstanding restructuring related liabilities of $3.8 million were recorded in other long-term liabilities in the consolidated balance sheets. During fiscal 2023, we recorded restructuring charges related to continuing operations of $53.1 million and made payments of $44.9 million under the 2023 Plan. We recorded restructuring charges related to discontinued operations of $23.9 million and made payments of $23.4 million under the 2023 Plan. As of October 31, 2023, the payroll and related benefits liabilities related to continuing operations of $3.7 million were recorded in accounts payable and accrued liabilities, and the remaining outstanding restructuring related liabilities of $4.5 million were recorded in other long-term liabilities in the consolidated balance sheets. The payroll and related benefits liabilities related to discontinued operations were $0.5 million. During fiscal 2022, we recorded restructuring charges related to continuing operations of $11.2 million and made payments of $24.1 million under the 2021 restructuring plan (the 2021 Plan) initiated in the third quarter of fiscal 2021. We recorded restructuring charges related to discontinued operations of $0.9 million and made payments of $2.2 million under the 2021 Plan. There was no outstanding balance under the 2021 Plan as of October 31, 2022.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Pay vs Performance Disclosure
Net Income (Loss)	$ 2,263,380	$ 1,229,888	$ 984,594

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended	12 Months Ended
	Oct. 31, 2024 shares	Oct. 31, 2024 shares
Trading Arrangements, by Individual
Material Terms of Trading Arrangement		None of our directors or officers informed us of the adoption, modification or termination of a "Rule 10b5-1 trading arrangement" or "non-Rule 10b5-1 trading arrangement" (as those terms are defined in Item 408(c) of Regulation S-K) during the quarterly period covered by this report, except as described in the table below: Name and Title Action Date Adopted Character of Trading Arrangement (1) Aggregate Number of Common Stock to be Purchased or Sold Pursuant to Trading Arrangement Expiration Date (2) Sassine Ghazi Adoption 9/30/2024 Rule 10b5-1 Trading Arrangement Up to 34,098 shares to be sold 12/12/2025 President, Chief Executive Officer and Director Rick Mahoney Adoption 9/13/2024 Rule 10b5-1 Trading Arrangement (3) 1/16/2026 Chief Revenue Officer (1) Except as indicated by footnote, each trading arrangement marked as a “Rule 10b5-1 Trading Arrangement” is intended to satisfy the affirmative defense of Rule 10b5-1(c), as amended (the Rule). (2) Except as indicated by footnote, each trading arrangement permitted or permits transactions through and including the earlier to occur of (a) the completion of all purchases or sales or (b) the date listed in the table. Each trading arrangement marked as a “Rule 10b5-1 Trading Arrangement” only permitted or only permits transactions upon expiration of the applicable mandatory cooling-off period under the Rule. (3) The aggregate number of common stock to be sold pursuant to Mr. Mahoney's Rule 10b5-1 Trading Arrangement includes: a. 30,222 shares of common stock held by Mr. Mahoney; b. All of net after-tax shares of common stock received upon the payout of 7,344 performance-based restricted stock units (PRSUs), which were earned on December 12, 2023, and thereafter subject to only time-based vesting; and c.
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false
Sassine Ghazi [Member]
Trading Arrangements, by Individual
Name	Sassine Ghazi
Title	President, Chief Executive Officer and Director
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	9/30/2024
Expiration Date	12/12/2025
Arrangement Duration	438 days
Aggregate Available	34,098	34,098
Rick Mahoney [Member]
Trading Arrangements, by Individual
Name	Rick Mahoney
Title	Chief Revenue Officer
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	9/13/2024
Expiration Date	1/16/2026
Arrangement Duration	490 days
Rick Mahoney Trading Arrangement, Common Stock [Member]
Trading Arrangements, by Individual
Aggregate Available	30,222	30,222
Rick Mahoney Trading Arrangement, 2022 Performance-Based Restricted Stock Units Payout, Net After-Tax Shares Of Common Stock [Member]
Trading Arrangements, by Individual
Aggregate Available	7,344	7,344
Rick Mahoney Trading Arrangement, 2023 Performance-Based Restricted Stock Units Payout, Net After-Tax Shares Of Common Stock [Member]
Trading Arrangements, by Individual
Aggregate Available	6,348	6,348

Insider Trading Policies and Pr

Insider Trading Policies and Procedures	12 Months Ended
	Oct. 31, 2024
Insider Trading Policies and Procedures [Line Items]
Insider Trading Policies and Procedures Adopted	true

Cybersecurity Risk Management a

Cybersecurity Risk Management and Strategy Disclosure	12 Months Ended
	Oct. 31, 2024
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]	We recognize the importance of assessing, identifying, and managing material risks associated with cybersecurity threats, as such term is defined in Item 106(a) of Regulation S-K. These risks include, among other things, operational risks; intellectual property theft; fraud; extortion; harm to employees or customers; violation of privacy or security laws and other litigation and legal risk; and reputational risks. We maintain a cybersecurity program and incident response plan to coordinate the activities we take to protect against, detect, respond to and remediate cybersecurity incidents, as such term is defined in Item 106(a) of Regulation S-K, as well as to comply with potentially applicable legal obligations and mitigate brand and reputational damage. We have implemented cybersecurity processes, technologies, and controls to aid in our efforts to identify, assess, and manage material risks, as well as to test and improve our incident response plan. Our approach includes, among other things: • Security and privacy reviews designed to identify risks from new features, software, suppliers and vendors; • A vulnerability management program designed to identify software vulnerabilities; • A variety of tools designed to monitor our networks, systems, and data for suspicious activity; • An internal red team program that simulates cyber threats, enhancing our ability to fix vulnerabilities before they are exploited by threat actors; • A threat intelligence program designed to model and research our adversaries; • Products and services to structure, test, and assess the rigor of our software security practices; • A variety of privacy, cybersecurity, and incident response trainings and simulations, including regular controlled penetration testing and cyber incident exercises to test the robustness of our data security protections and incident response readiness; • For suppliers and service providers, pre-engagement risk-based diligence, contractual security and notification provisions, and ongoing monitoring as appropriate; and • Maintaining cyber liability insurance that covers certain liabilities related to data breaches and related incidents. Synopsys’ cybersecurity program is designed to leverage multiple industry-recognized frameworks including the National Institute of Standards and Technology Cyber Security Framework (NIST CSF) and the ISO/IEC 27001 Information Security Management Framework, and are assessed regularly by our internal audit department. We track our NIST CSF implementation through periodic third-party maturity assessments that provide the basis for establishing performance goals for the coming period. Our process for identifying and assessing material risks from cybersecurity threats operates alongside our broader overall risk assessment process. As part of this process, appropriate personnel will collaborate with subject matter specialists, as necessary, to gather insights for identifying and assessing material cybersecurity threat risks, their severity, and potential mitigations. As part of the above approach and processes, we regularly engage with assessors, consultants, auditors, and other third-parties to help identify areas for continued focus, improvement and/or compliance. Since 2015, we have not experienced any material cybersecurity incidents and the expenses we have incurred from cybersecurity incidents were immaterial. This includes penalties and settlements, of which there were none. In our risk factors, we describe whether and how risks from identified cybersecurity threats, including as a result of any previous cybersecurity incidents, have materially affected or are reasonably likely to materially affect us,
Cybersecurity Risk Management Processes Integrated [Flag]	true
Cybersecurity Risk Management Processes Integrated [Text Block]	We recognize the importance of assessing, identifying, and managing material risks associated with cybersecurity threats, as such term is defined in Item 106(a) of Regulation S-K. These risks include, among other things, operational risks; intellectual property theft; fraud; extortion; harm to employees or customers; violation of privacy or security laws and other litigation and legal risk; and reputational risks. We maintain a cybersecurity program and incident response plan to coordinate the activities we take to protect against, detect, respond to and remediate cybersecurity incidents, as such term is defined in Item 106(a) of Regulation S-K, as well as to comply with potentially applicable legal obligations and mitigate brand and reputational damage.
Cybersecurity Risk Management Third Party Engaged [Flag]	true
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]	true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]	false
Cybersecurity Risk Board of Directors Oversight [Text Block]	Information technology and data security, particularly cybersecurity, is a top area of focus for our Board of Directors (the Board), which considers these areas as essential for the success of our company and the broader technology industry in which we operate. Our Board is actively involved in overseeing cybersecurity risk management. At least once a year, senior management, including our Chief Information Security Officer (CISO), presents to the Board on Synopsys' cybersecurity performance and risk profile. Further, senior management and our CISO present semiannually to our Corporate Governance and Nominating Committee (CGN Committee) on Synopsys' cybersecurity risk oversight activities and cybersecurity preparedness efforts. The CGN Committee of our Board, a majority of whom are individuals with a strong background in cybersecurity and related matters, meets with members of senior management to review our information technology and data security policies and practices, and to assess current and potential threats, cybersecurity incidents and related risks. Our CISO reports directly to our executive management team and advises Synopsys on cybersecurity risks and assesses the effectiveness of information technology and data security processes. The materials presented to our Board and CGN Committee include updates on our data security posture, results of third-party assessments, progress towards pre-determined risk-mitigation related goals, our incident response plan, and certain cybersecurity threat risks or incidents and developments, as well as the steps management has taken to respond to such risks. Members of the Board and the CGN Committee are also encouraged to regularly engage in ad hoc conversations with management on cybersecurity-related news events and to discuss any updates to our cybersecurity risk management and strategy programs. Material cybersecurity threat risks may also be considered during separate Board meeting discussions. Our cybersecurity risk management and strategy processes, which are discussed in greater detail above, are led by our CISO. Our CISO has over 30 years of prior work experience in various roles involving managing information security, developing cybersecurity strategy and implementing effective information and cybersecurity programs. Our CISO holds a Bachelor’s of Science in Information Technology and a Master of Business Administration, and is also a Certified Information Systems Security Professional. He oversees our cybersecurity program and chairs a cross-functional committee that spans information security, IT, product security, physical security, and legal. Our CISO and other members of senior management are informed about and monitor the prevention, mitigation, detection, and remediation of cybersecurity incidents through their management of, and participation in, the cybersecurity risk management and strategy processes described above, including the operation of our incident response plan . If a cybersecurity incident is determined to be a material cybersecurity incident, our incident response plan and cybersecurity disclosure controls and procedures define the process to disclose such material cybersecurity incident.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]	Our Board is actively involved in overseeing cybersecurity risk management.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]	At least once a year, senior management, including our Chief Information Security Officer (CISO), presents to the Board on Synopsys' cybersecurity performance and risk profile. Further, senior management and our CISO present semiannually to our Corporate Governance and Nominating Committee (CGN Committee) on Synopsys' cybersecurity risk oversight activities and cybersecurity preparedness efforts. The CGN Committee of our Board, a majority of whom are individuals with a strong background in cybersecurity and related matters, meets with members of senior management to review our information technology and data security policies and practices, and to assess current and potential threats, cybersecurity incidents and related risks. Our CISO reports directly to our executive management team and advises Synopsys on cybersecurity risks and assesses the effectiveness of information technology and data security processes. The materials presented to our Board and CGN Committee include updates on our data security posture, results of third-party assessments, progress towards pre-determined risk-mitigation related goals, our incident response plan, and certain cybersecurity threat risks or incidents and developments, as well as the steps management has taken to respond to such risks. Members of the Board and the CGN Committee are also encouraged to regularly engage in ad hoc conversations with management on cybersecurity-related news events and to discuss any updates to our cybersecurity risk management and strategy programs. Material cybersecurity threat risks may also be considered during separate Board meeting discussions.
Cybersecurity Risk Role of Management [Text Block]	At least once a year, senior management, including our Chief Information Security Officer (CISO), presents to the Board on Synopsys' cybersecurity performance and risk profile. Further, senior management and our CISO present semiannually to our Corporate Governance and Nominating Committee (CGN Committee) on Synopsys' cybersecurity risk oversight activities and cybersecurity preparedness efforts. The CGN Committee of our Board, a majority of whom are individuals with a strong background in cybersecurity and related matters, meets with members of senior management to review our information technology and data security policies and practices, and to assess current and potential threats, cybersecurity incidents and related risks. Our CISO reports directly to our executive management team and advises Synopsys on cybersecurity risks and assesses the effectiveness of information technology and data security processes. The materials presented to our Board and CGN Committee include updates on our data security posture, results of third-party assessments, progress towards pre-determined risk-mitigation related goals, our incident response plan, and certain cybersecurity threat risks or incidents and developments, as well as the steps management has taken to respond to such risks. Members of the Board and the CGN Committee are also encouraged to regularly engage in ad hoc conversations with management on cybersecurity-related news events and to discuss any updates to our cybersecurity risk management and strategy programs. Material cybersecurity threat risks may also be considered during separate Board meeting discussions.
Cybersecurity Risk Management Positions or Committees Responsible [Flag]	true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]	At least once a year, senior management, including our Chief Information Security Officer (CISO), presents to the Board on Synopsys' cybersecurity performance and risk profile. Further, senior management and our CISO present semiannually to our Corporate Governance and Nominating Committee (CGN Committee) on Synopsys' cybersecurity risk oversight activities and cybersecurity preparedness efforts.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]	Our CISO has over 30 years of prior work experience in various roles involving managing information security, developing cybersecurity strategy and implementing effective information and cybersecurity programs. Our CISO holds a Bachelor’s of Science in Information Technology and a Master of Business Administration, and is also a Certified Information Systems Security Professional.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]	Our cybersecurity risk management and strategy processes, which are discussed in greater detail above, are led by our CISO. Our CISO has over 30 years of prior work experience in various roles involving managing information security, developing cybersecurity strategy and implementing effective information and cybersecurity programs. Our CISO holds a Bachelor’s of Science in Information Technology and a Master of Business Administration, and is also a Certified Information Systems Security Professional. He oversees our cybersecurity program and chairs a cross-functional committee that spans information security, IT, product security, physical security, and legal. Our CISO and other members of senior management are informed about and monitor the prevention, mitigation, detection, and remediation of cybersecurity incidents through their management of, and participation in, the cybersecurity risk management and strategy processes described above, including the operation of our incident response plan . If a cybersecurity incident is determined to be a material cybersecurity incident, our incident response plan and cybersecurity disclosure controls and procedures define the process to disclose such material cybersecurity incident.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]	true

Summary of Significant Accoun_2

Summary of Significant Accounting Policies and Basis of Presentation (Policies)	12 Months Ended
	Oct. 31, 2024
Accounting Policies [Abstract]
Fiscal Year End	Historically, our fiscal years have been 52- or 53-week periods ending on the Saturday nearest to October 31. Fiscal 2024 was a 53-week year ending on November 2, 2024. Fiscal 2023 and 2022 were 52-week years and ended on October 28, 2023 and October 29, 2022, respectively. For presentation purposes, the consolidated financial statements and accompanying notes refer to the closest calendar month end. We have changed our fiscal year end from the Saturday nearest to October 31 and consisting of 52 or 53 fiscal weeks to a fiscal year end of October 31 each year. The fiscal year change becomes effective with our fiscal 2025, which began on November 3, 2024. Our fiscal quarters will end on January 31, April 30, July 31 and October 31 of each year.
Principles of Consolidation	The consolidated financial statements include our accounts and the accounts of our wholly and majority-owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation.
Use of Estimates	Use of Estimates. To prepare financial statements in conformity with U.S. GAAP, management must make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from these estimates and could have a material impact on our operating results and financial position.
Software Integrity Divestiture	Software Integrity Divestiture. On May 5, 2024, we entered into an Equity Purchase Agreement, by and between Synopsys and Sapphire Software Buyer, Inc., an entity controlled by funds affiliated with Clearlake Capital Group, L.P. and Francisco Partners (together, the Sponsors). On September 30, 2024, we completed the previously announced sale of our Software Integrity business to entities controlled by funds affiliated with the Sponsors (the Software Integrity Divestiture). We previously determined that the Software Integrity Divestiture met the criteria to be disclosed as discontinued operations in the second quarter of fiscal 2024 as it represented a significant strategic shift that had a major effect on our operations and financial results. The results of the Software Integrity business, including the gain on divestiture, are presented as discontinued operations in the consolidated statements of income, and as such, have been excluded from both continuing operations and segment results for all periods presented. Further, we reclassified the assets and liabilities of the Software Integrity business as assets and liabilities of discontinued operations in the consolidated balance sheets as of October 31, 2023. The consolidated statements of cash flows are presented on a consolidated basis for both continuing operations and discontinuing operations. We did not allocate any general corporate overhead to the Software Integrity business. Unless otherwise noted, reference within these Notes to Consolidated Financial Statements relates to continuing operations. See Note 3. Discontinued Operations of the Notes to Consolidated Financial Statements in this Annual Report.
Segment Reporting	Segment Reporting. As a result of the Software Integrity Divestiture, we changed our reportable segment from the three reportable segments to the following two reportable segments: (1) Design Automation, which includes our advanced silicon design, verification products and services, system integration products and services, digital, custom and FPGA IC design software, verification software and hardware products, manufacturing software products and other; and (2) Design IP, which includes our interface, foundation, security, and embedded processor IP, IP subsystems, and IP implementation services. Our Chief Operating Decision Maker (CODM), our Chief Executive Officer (CEO) reviews disaggregated segment information, assess performance against our key growth strategies and allocates resources. See Note 20. Segment Disclosure of the Notes to Consolidated Financial Statements in this Annual Report . Prior period segment results and related disclosures have been reclassified to conform to the current period segment presentation.
Cash Equivalents and Short-term Investments	Cash Equivalents and Short-term Investments . We consider all highly liquid investments with original maturities of three months or less at the date of purchase to be cash equivalents. Our investments in debt securities with remaining maturities greater than three months at the date of purchase are designated as available-for-sale securities as we may convert these investments into cash at any time to fund general operations, and included in short-term investments in the consolidated balance sheets. Our debt securities generally have an effective maturity term of less than three years and are carried at fair value, with unrealized gains and losses included in the consolidated balance sheets as a component of accumulated other comprehensive income (loss). For available-for-sale debt securities in an unrealized loss position, we evaluate whether a current expected credit loss exists based on available information relevant to the credit rating of the security, current economic conditions and reasonable and supportable forecasts. The allowance for credit loss is recorded in interest and other income (expense), net, in the consolidated statements of income, not to exceed the amount of the unrealized loss. Any excess unrealized loss other than the credit loss is recognized in accumulated other comprehensive income or loss in the stockholders' equity section of the consolidated balance sheets. The cost of securities sold is based on the specific identification method and realized gains and losses are included in interest and other income (expense), net. See Note 9. Financial Assets and Liabilities of the Notes to Consolidated Financial Statements in this Annual Report.
Investments in Equity Securities	Investments in Equity Securities. We hold equity securities in privately held companies for the promotion of business and strategic objectives. We account for these investments using either the measurement alternative approach when the fair value of the investment is not readily determinable and we do not have the ability to exercise significant influence, or the equity method of accounting when it is determined that we have the ability to exercise significant influence. Investments accounted for using the measurement alternative approach are initially recorded at cost and adjusted for changes in fair value from observable transactions. For investments accounted for using the equity method of accounting, we record our proportionate share of the investee’s income or loss to interest and other income (expense), net, in our consolidated statements of income. These investments are subject to a periodic impairment review, and are included in other long-term assets in the consolidated balance sheets.
Accounts Receivable, Net	Accounts Receivable, Net. The balances consist of billed accounts receivable and current portion of unbilled accounts receivable. Trade accounts receivables are recorded at the invoiced amount and do not bear interest.
Allowance for Credit Losses	Allowance for Credit Losses.
Inventories	Inventories. Inventories are computed at standard costs which approximate actual costs, on a first-in, first-out basis and valued at the lower of cost or net realizable value. Inventories primarily include components and finished goods for complex emulation and prototyping hardware systems. The valuation process includes a review of the forecasts based upon future demand and market conditions. Inventory provisions are recorded when the costs are determined to be in excess of anticipated demand or considered obsolete. Inventory provisions are impacted by market and economic conditions, technology changes, new product introductions and changes in strategic direction, and require estimates that may include uncertain elements.
Fair Values of Financial Instruments	Fair Values of Financial Instruments. Our cash equivalents, short-term investments and foreign currency contracts are carried at fair value. The fair value of our accounts receivable and accounts payable approximates the carrying amount due to their short duration. Non-marketable equity securities are accounted for using either the measurement alternative or equity method of accounting. We perform periodic impairment analysis on these non-marketable equity securities. The carrying amount of the short-term and long-term debt approximates the estimated fair value. See Note 10. Fair Value Measurements of the Notes to Consolidated Financial Statements in this Annual Report.
Foreign Currency Contracts	Foreign Currency Contracts. We operate internationally and are exposed to potentially adverse movements in currency exchange rates. We enter into hedges in the form of foreign currency forward contracts to reduce our exposure to foreign currency rate changes on non-functional currency denominated forecasted transactions and balance sheet positions. The assets or liabilities associated with the forward contracts are recorded at fair value in other current assets or accrued liabilities in the consolidated balance sheets. The accounting for gains and losses resulting from changes in fair value depends on the use of the foreign currency forward contract and whether it is designated and qualifies for hedge accounting. See Note 9. Financial Assets and Liabilities of the Notes to Consolidated Financial Statements in this Annual Report.
Concentration of Credit Risk	Concentration of Credit Risk. Financial instruments that potentially subject us to significant concentrations of credit risk consist principally of cash equivalents, short-term investments, foreign currency contracts, and trade accounts receivable. We maintain cash equivalents primarily in highly rated taxable and tax-exempt money market funds located in the U.S. and in various overseas locations. Our short-term investments include a variety of financial instruments, such as corporate debt and municipal securities, U.S. Treasury and Government agency securities. By policy, we limit the amount of credit exposure with any one issue, issuer and type of instrument. We sell our products worldwide primarily to customers in the global electronics market. We perform on-going credit evaluations of our customers’ financial condition and do not require collateral. We establish reserves for potential credit losses and such losses have been within management’s expectations and have not been material in any year presented.
Income Taxes	Income Taxes. We account for income taxes using the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. We account for uncertainty in income taxes using a two-step approach to recognizing and measuring uncertain tax positions. The first step is to evaluate the tax position for recognition by determining whether it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount which is more than 50% likely of being realized upon ultimate settlement. An uncertain tax position is considered effectively settled on completion of an examination by a taxing authority if certain other conditions are satisfied.
Property and Equipment	Property and Equipment.
Leases	Leases . We determine if an arrangement is a lease at inception of the contract, which is the date on which the terms of the contract are agreed to, and the agreement creates enforceable rights and obligations. A contract is or contains a lease when we have the right to control the use of an identified asset for a period of time. The commencement date of the lease is the date that the lessor makes an underlying asset available for use by the lessee. On the commencement date, leases are evaluated for classification and assets and liabilities are recognized based on the present value of lease payments over the lease term. The lease term used to calculate the lease liability includes options to extend or terminate the lease when it is reasonably certain that the option will be exercised. The right of use (ROU) asset is initially measured as the amount of lease liability, adjusted for any initial lease costs, prepaid lease payments and any lease incentives. Variable lease payments, consisting primarily of reimbursement of costs incurred by lessors for common area maintenance, real estate taxes and insurance, are not included in the lease liability and are recognized as they are incurred. As most of our leases do not provide an implicit rate, we use the incremental borrowing rate at lease commencement to measure ROU assets and lease liabilities. We use a benchmark senior unsecured yield curve for debt instruments over the similar term, and consider specific credit quality, market conditions, tenor of lease arrangements, and quality of collateral to determine the incremental borrowing rate. Operating lease expense is generally recognized on a straight-line basis over the lease term. We have elected the practical expedient to account for the lease and non-lease components as a single lease component for the majority of our asset classes. For leases with an initial term of one year or less, we have elected not to record the ROU asset or liability.
Business Combinations	Business Combinations. We allocate the purchase price of acquired companies to the tangible and intangible assets acquired and liabilities assumed based on their acquisition-date fair values with the exception of contract assets and contract liabilities (deferred revenue) which are recognized and measured on the acquisition date in accordance with our “Revenue Recognition” policy. The excess of the fair value of purchase consideration over the fair value of these identifiable assets and liabilities is recorded as goodwill. Acquisition-related expenses are recognized separately from the business combination and are expensed as incurred. We include the results of operations of the businesses that are acquired from the acquisition date.
Goodwill	Goodwill. Goodwill represents the excess of the aggregate purchase price over the fair value of the net tangible and identifiable intangible assets acquired by us. All goodwill acquired in a business combination is assigned to one or more reporting units as of acquisition date. We have two reportable segments, and reporting units are determined to be the same as reportable segments. The carrying amount of goodwill at each reporting unit is tested for impairment annually on the first day of the fourth fiscal quarter, or more frequently if facts and circumstances warrant a review. We perform either a qualitative or quantitative assessment for goodwill impairment test. When a quantitative goodwill impairment assessment is performed, we use an income approach based on discounted cash
Intangible Assets	Intangible Assets. Intangible assets consist of acquired technology, certain contract rights, customer relationships, trademarks and trade names, and capitalized software. These intangible assets are acquired through business combinations, direct purchases, or internally developed capitalized software. Intangible assets are amortized on a straight-line basis over their estimated useful lives which range from one
Redeemable Non-controlling Interest	Redeemable Non-controlling Interest. Non-controlling interest that is not solely redeemable within our control is reported as temporary equity in our consolidated balance sheets. The carrying value of the redeemable non-controlling interest equals the redemption value at the end of each reporting period, after giving effect to the change from the net income (loss) attributable to the redeemable non-controlling interest. We remeasure the redemption value of the non-controlling interest on a quarterly basis and changes in the estimated redemption value are recognized through retained earnings and may also impact the net income or loss attributable to common stockholders of Synopsys if the redemption value falls below a stated threshold. See Note 5. Business Combinations of the Notes to Consolidated Financial Statements
Revenue Recognition	Revenue Recognition. We recognize revenue for the transfer of services or products to customers in an amount that reflects the consideration to which we expect to be entitled in exchange for those services or products. The principle is achieved through the following five-step approach: • Identification of the contract, or contracts, with the customer • Identification of the performance obligation in the contract • Determination of the transaction price • Allocation of the transaction price to the performance obligations in the contract • Recognition of revenue when, or as, we satisfy a performance obligation Nature of Products and Services We generate revenue from the licensing of our EDA software and IP blocks, as well as sale of hardware products, and maintenance and services. The various types are set forth below. Electronic Design Automation Software license revenue consists of fees associated with the licensing of our software primarily through Technology Subscription License (TSL) contracts. TSLs are time-based licenses for a finite term and generally provide the customer with limited rights to receive, or to exchange certain quantities of licensed software for, unspecified future technology. The majority of our arrangements are TSLs due to the nature of our business and customer requirements. In addition to the licenses, the arrangements also include: post-contract customer support, which includes providing frequent updates and upgrades to maintain the utility of the software due to rapid changes in technology; other intertwined services such as multiple copies of the tools; assisting our customers in applying our technology in the customers' development environment; and rights to remix licenses for other licenses. Payments are generally received in equal or near equal installments over the term of the arrangement. We have concluded that our software licenses in TSL contracts are not distinct from our obligation to provide unspecified software updates to the licensed software throughout the license term. Such updates represent inputs to a single, combined performance obligation, commencing upon the later of the arrangement effective date or transfer of control to the software license. Remix rights are not an additional promised good or service in the contract, and where unspecified additional software product rights are part of the contract with the customer, such rights are accounted for as part of the single performance obligation that includes the licenses, updates, and technical support because such rights are provided for the same period of time and have the same pattern of transfer to the customer over the duration of the subscription term. Design IP Products We generally license IP under nonexclusive license agreements that provide usage rights for specific applications. Additionally, for certain IP license agreements, royalties are collected as customers sell their own products that incorporate our IP. These arrangements generally have two distinct performance obligations that consist of transferring the licensed IP and the post contract support service. Support services consist of a stand-ready obligation to provide technical support and software updates over the support term. Revenue allocated to the IP license is recognized at a point in time upon the later of the delivery date or the beginning of the license period, and revenue allocated to support services is recognized ratably over the support term. Royalties are recognized as revenue is earned, generally when the customer sells its products that incorporate our IP. Hardware We generally have two performance obligations in arrangements involving the sale of hardware products. The first performance obligation is to transfer the hardware product, which includes embedded software integral to the functionality of the hardware product. The second performance obligation is to provide maintenance on the hardware and our embedded software, including rights to technical support, hardware repairs and software updates that are all provided over the same term and have the same time-based pattern of transfer to the customer. The portion of the transaction price allocated to the hardware product is recognized as revenue at a point in time when control of the hardware is transferred to the customer. We have concluded that control generally transfers upon shipment because the customer has the ability to direct the use of the asset and an obligation to pay for the hardware. The portion of the transaction price allocated to maintenance is recognized as revenue that is ratable over the maintenance term. Professional Services Our arrangements often include service elements other than maintenance and support services. These services include training, design assistance, and consulting. These services are generally performed on a time and materials basis, and are recognized over time, as the customer simultaneously receives and consumes the benefit provided. Certain arrangements also include the customization or modification of licensed IP. Revenue from these contracts is recognized over time as the services are performed, when the development is specific to the customer’s needs and we have enforceable rights to payment for performance completed. Inputs such as costs incurred and hours expended are used in order to measure progress of performance. We have a history of accurately estimating project status and the costs necessary to complete projects. A number of internal and external factors can affect these estimates, including labor rates, utilization and efficiency variances, specification and testing requirement changes, and changes in customer delivery priorities. Payments for services are generally due upon milestones in the contract or upon consumption of the hourly resources. Flexible Spending Accounts Our customers frequently enter into non-cancelable Flexible Spending Account arrangements (FSA) whereby the customer commits to a fixed dollar amount over a specified period of time that can be used to purchase from a list of our products or services. These arrangements do not meet the definition of a revenue contract until the customer executes a separate order (pulldown request) to identify the required products and services that they are purchasing. The combination of the FSA arrangement and the subsequent order creates enforceable rights and obligations, thus meeting the definition of a revenue contract. Each separate order under the agreement is treated as an individual contract and accounted for based on the respective performance obligations included within the pulldown requests. Significant Judgments Our contracts with customers often include promises to transfer multiple products and services to a customer. Determining whether services and products are considered distinct performance obligations that should be accounted for separately versus together requires significant judgment . We have concluded that (1) our EDA software licenses in TSL contracts are not distinct from our obligation to provide unspecified software updates to the licensed software throughout the license term, because those promises represent inputs to a single, combined performance obligation, and (2) where unspecified additional software product rights are part of the contract with the customer, such rights are accounted for as part of the single performance obligation that includes the licenses, updates, and technical support, because such rights are provided for the same period of time and have the same time-based pattern of transfer to the customer. In reaching this conclusion, we considered the nature of the obligation to customers, which is to provide an ongoing right to use the most up to date and relevant software. As EDA customers operate in a rapidly changing and competitive environment, satisfying the obligation requires providing critical updates to the existing software products, including ongoing iterative interaction with customers to make the software relevant to customers’ ability to meet the time to go to market with advanced products. Our contracts with customers can involve hundreds of products and various license rights. Customers often negotiate a broad portfolio of solutions, and favorable terms along with future purchase options to manage their overall costs. Determining whether the purchase options are considered distinct performance obligations that should be accounted for separately as material rights versus combined together may require significant judgment. Judgment is also required to determine the standalone selling price (SSP) for each distinct performance obligation. For non-software performance obligations (IP, Hardware, and services), SSP is established based on observable prices of products and services sold separately. SSP for license (and related updates and support) in a contract with multiple performance obligations is determined by applying a residual approach whereby all other non-software performance obligations within a contract are first allocated a portion of the transaction price based upon their respective SSP, using observable prices, with any residual amount of the transaction price allocated to the license because we do not sell the license separately, and the pricing is highly variable. Contract Balances The timing of revenue recognition may differ from the timing of invoicing customers, and these timing differences result in receivables (billed or unbilled), contract assets, or contract liabilities (deferred revenue) in our consolidated balance sheets. We record a contract asset when revenue is recognized prior to the right to invoice, or deferred revenue when revenue is recognized subsequent to invoicing. For time-based software agreements, customers are generally invoiced in equal, quarterly amounts, although some customers prefer to be invoiced in single or annual amounts. We record an unbilled receivable when revenue is recognized and we have an unconditional right to invoice and receive payment.
Warranties and Indemnities	Warranties and Indemnities Warranties. We generally warrant our products to be free from defects in media and to substantially conform to material specifications for a period of 90 days for our software products and for up to six months for our hardware products. Indemnities.
Net Income Per Share	Net Income Per Share. We compute basic net income per share by dividing net income available to common stockholders by the weighted average number of common shares outstanding during the period. Diluted net income per share reflects the dilution from potential common shares outstanding such as stock options and unvested restricted stock units and awards during the period using the treasury stock method. See Note 17. Net Income Per Share of the Notes to Consolidated Financial Statements in this Annual Report .
Foreign Currency Translation	Foreign Currency Translation. The functional currency of the majority of our active foreign subsidiaries is the foreign subsidiary’s local currency. Assets and liabilities that are not denominated in the functional currency are remeasured into the functional currency with any related gains or losses recorded in earnings. We translate assets and liabilities of our non-U.S. dollar functional currency foreign operations into the U.S. dollar reporting currency at exchange rates in effect at the balance sheet date. We translate income and expense items of such foreign operations into the U.S. dollar reporting currency at average exchange rates for the period. Accumulated translation adjustments are reported in stockholders’ equity, as a component of accumulated other comprehensive income (loss).
Recent Accounting Pronouncements Not Yet Adopted	Recent Accounting Pronouncements Not Yet Adopted In June 2022, the FASB issued ASU 2022-03, Fair Value Measurement (Topic 820): Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions, which applies to all equity securities measured at fair value that are subject to contractual sale restrictions. This change prohibits entities from taking into account contractual restrictions on the sale of equity securities when estimating fair value and introduces required disclosures for such transactions. The ASU will be effective for us beginning the fiscal year 2025 and will be applied prospectively. Any future impact from the adoption of this ASU will depend on the facts and circumstances of future transactions. In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. The ASU expands public entities’ segment disclosures by requiring disclosure of significant segment expenses that are regularly provided to the Chief Operating Decision Maker (CODM) and included within each reported measure of segment profit or loss, an amount and description of its composition for other segment items, and interim disclosures of a reportable segment’s profit or loss and assets. The ASU will be effective for our annual reports beginning in fiscal 2025, and interim period reports beginning in fiscal 2026. We are currently evaluating the impact of adopting this ASU on our consolidated financial statements and disclosures. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which enhances the transparency and decision usefulness of income tax disclosures primarily through changes to the rate reconciliation and income taxes paid information. The ASU will be effective for us beginning in fiscal 2026 and will be applied on a prospective ba sis. Early adoption is permitted. We are currently evaluating the impact of this ASU on our consolidated financial statements and related disclosures. In November 2024, the FASB issued ASU 2024-03, Income Statement – Reporting Comprehensive Income-Expense Disaggregation (Subtopic 220-40): Disaggregation of Income Statement Expenses. The ASU requires the disclosure of additional information related to certain costs and expenses, including amounts of inventory purchases, employee compensation, and depreciation and amortization included in each income statement line item. The ASU also requires disclosure of the total amount of selling expenses and our definition of selling expenses. The ASU is effective for our annual reports beginning in fiscal 2028, and interim period reports beginning in fiscal 2029 either on a prospective or retrospective basis. Early adoption is permitted. We are currently evaluating the impact of adopting this ASU on our consolidated financial statements and disclosures.
Restricted cash	Restricted cash We include amounts generally described as restricted cash in cash and cash equivalents when reconciling beginning-of-period and end-of-period total amounts shown in the consolidated statements of cash flows. Restricted cash is primarily associated with office leases and employee loan programs.
Fair Value Measurement	ASC 820-10, Fair Value Measurements and Disclosures , defines fair value, establishes guidelines and enhances disclosure requirements for fair value measurements. The accounting guidance requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The accounting guidance also establishes a fair value hierarchy based on the independence of the source and objective evidence of the inputs used. There are three fair value hierarchies based upon the level of inputs that are significant to fair value measurement: Level 1 —Observable inputs that reflect quoted prices (unadjusted) for identical instruments in active markets; Level 2 —Observable inputs other than quoted prices for identical instruments in active markets, quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in inactive markets, and model-driven valuations in which all significant inputs and significant value drivers are observable in active markets; and Level 3 —Unobservable inputs derived from fair valuation techniques in which one or more significant inputs or significant value drivers are unobservable. On a recurring basis, we measure the fair value of certain assets and liabilities, which include cash equivalents, short-term investments, non-qualified deferred compensation plan assets, and foreign currency derivative contracts. Our cash equivalents and short-term investments are classified within Level 1 or Level 2 because they are valued using quoted market prices in an active market or alternative independent pricing sources and models utilizing market observable inputs. Our non-qualified deferred compensation plan assets consist of money market and mutual funds invested in domestic and international marketable securities that are directly observable in active markets and are therefore classified within Level 1. Our foreign currency derivative contracts are classified within Level 2 because these contracts are not actively traded and the valuation inputs are based on quoted prices and market observable data of similar instruments. Our borrowings under our Credit and Term Loan facilities are classified within Level 2 because these borrowings are not actively traded and have a variable interest rate structure based upon market rates currently available to us for debt with similar terms and maturities. See Note 11. Bridge Commitment Letter, Term Loan and Revolving Credit Facilities of the Notes to Consolidated Financial Statements in this Annual Report for more information on these borrowings. Our contingent consideration receivable, which was recorded in connection with the Software Integrity Divestiture, was classified within Level 3 because it was estimated using significant inputs that were not observable in the market. See Note 3. Discontinued Operation of the Notes to Consolidated Financial Statements in this Annual Report for additional information.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies and Basis of Presentation (Tables)	12 Months Ended
	Oct. 31, 2024
Accounting Policies [Abstract]
Schedule of Changes in Allowance for Credit Losses	The following table presents the changes in the allowance for credit losses: Fiscal Year Balance at Provisions Write-offs/Adjustments Balance at (in thousands) 2024 $ 50,366 $ 19,286 $ (5,609) $ 64,043 2023 $ 38,586 $ 18,345 $ (6,565) $ 50,366 2022 $ 27,034 $ 11,486 $ 66 $ 38,586
Schedule of Useful Lives of Depreciable Assets	The useful lives of depreciable assets are as follows: Useful Life in Years Computer and other equipment 3 - 8 Buildings 30 Furniture and fixtures 5 Leasehold improvements Shorter of the lease term or the estimated useful life

Discontinued Operations (Tables

Discontinued Operations (Tables)	12 Months Ended
	Oct. 31, 2024
Discontinued Operations and Disposal Groups [Abstract]
Schedule of Discontinued Operations	The following table presents the major components of financial results of our Software Integrity business for the periods presented: Year Ended October 31, 2024 2023 2022 (in thousands) Revenue $ 468,720 $ 524,605 $ 465,828 Cost of revenue 153,081 191,350 165,684 Operating expenses 265,029 337,235 286,820 Interest and other income (expense), net 2,003 292 (1,262) Income (loss) from discontinued operations 52,613 (3,688) 12,062 Gain on Software Integrity Divestiture 868,830 — — Income (loss) from discontinued operations before income taxes 921,443 (3,688) 12,062 Income tax provision (benefit) 99,773 (6,531) (2,307) Income from discontinued operations, net of income taxes $ 821,670 $ 2,843 $ 14,369 The following table represents the aggregated carrying amounts of classes of assets and liabilities that are classified as discontinued operations in the consolidated balance sheets for the periods presented: As of October 31, 2023 (in thousands) Assets: Cash and cash equivalents $ 4,947 Accounts receivable, net 90,307 Prepaid and other current assets 19,400 Total current assets of discontinued operations $ 114,654 Property and equipment, net $ 7,424 Operating lease right-of use assets, net 8,906 Goodwill 724,271 Intangible assets, net 134,617 Deferred income taxes 7,388 Other long-term assets 26,153 Total long-term assets of discontinued operations $ 908,759 Liabilities: Accounts payable and accrued liabilities $ 63,847 Operating lease liabilities 5,858 Deferred revenue 216,539 Total current liabilities of discontinued operations $ 286,244 Long-term operating lease liabilities $ 4,349 Long-term deferred revenue 24,301 Other long-term liabilities 4,607 Total long-term liabilities of discontinued operations $ 33,257 The following table presents significant non-cash items and capital expenditures of discontinued operations for the periods presented: Year Ended October 31, 2024 2023 2022 ( in thousands) Amortization and depreciation $ 16,317 $ 51,971 $ 44,173 Reduction of operating lease right-of-use assets $ 2,162 $ 5,120 $ 4,898 Amortization of capitalized costs to obtain revenue contracts $ 25,051 $ 30,071 $ 23,090 Stock-based compensation $ 34,381 $ 50,198 $ 37,280 Deferred income taxes $ (31,679) $ (3,136) $ (599) Purchases of property and equipment $ 1,487 $ 3,232 $ 3,610

Revenue (Tables)

Revenue (Tables)	12 Months Ended
	Oct. 31, 2024
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregation of Revenue	The following table shows the percentage of revenue by product groups: Year Ended October 31, 2024 2023 2022 EDA 66.4 % 69.2 % 69.2 % Design IP 31.1 % 29.0 % 28.5 % Other 2.5 % 1.8 % 2.3 % Total 100.0 % 100.0 % 100.0 %
Schedule of Contract Assets and Liabilities	Contract balances are as follows: As of October 31, 2024 2023 (in thousands) Contract assets, net $ 757,075 $ 375,904 Unbilled receivables $ 44,166 $ 60,016 Deferred revenue $ 1,732,568 $ 1,710,288

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Oct. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	Goodwill activity by reportable segment consists of the following: Design Automation Design IP Total (in thousands) Balance at October 31, 2022 $ 2,176,337 $ 944,734 $ 3,121,071 Additions 229,351 — 229,351 Effect of foreign currency translation (5,006) 649 (4,357) Balance at October 31, 2023 2,400,682 945,383 3,346,065 Additions 61,803 34,339 96,142 Adjustments 170 — 170 Effect of foreign currency translation 6,602 (129) 6,473 Balance at October 31, 2024 $ 2,469,257 $ 979,593 $ 3,448,850
Schedule of Intangible Assets	Intangible assets as of October 31, 2024 consists of the following: Gross Carrying Amount Accumulated Amortization and Impairment Net Amount (in thousands) Core/developed technology $ 904,347 $ 777,518 $ 126,829 Customer relationships 314,140 247,025 67,115 Contract rights intangible 176,382 175,170 1,212 Trademarks and trade names 12,925 12,917 8 Total $ 1,407,794 $ 1,212,630 $ 195,164 Intangible assets as of October 31, 2023 consists of the following: Gross Carrying Amount Accumulated Net Amount (in thousands) Core/developed technology $ 842,448 $ 672,480 $ 169,968 Customer relationships 296,883 231,557 65,326 Contract rights intangible 175,747 171,487 4,260 Trademarks and trade names 12,925 12,902 23 Capitalized software development costs 50,795 50,795 — Total $ 1,378,798 $ 1,139,221 $ 239,577
Schedule of Amortization Expense Related to Intangible Assets	Amortization expense related to acquired intangible assets, including the impairment charge Year Ended October 31, 2024 2023 2022 (in thousands) Core/developed technology $ 104,797 $ 42,892 $ 42,582 Customer relationships 15,550 9,288 11,389 Contract rights intangible 3,872 2,389 2,307 Trademarks and trade names 15 7 33 Capitalized software development costs (1) — 4,770 2,672 Total $ 124,234 $ 59,346 $ 58,983 (1) Amortization of capitalized software development costs is included in cost of products revenue in the consolidated statements of income.
Schedule of Estimated Future Amortization of Acquired Intangible Assets	The following table presents the estimated future amortization of acquired intangible assets as of October 31, 2024: Fiscal Year (in thousands) 2025 $ 46,436 2026 36,112 2027 31,165 2028 25,572 2029 23,038 2030 and thereafter 32,841 Total $ 195,164

Balance Sheet Components (Table

Balance Sheet Components (Tables)	12 Months Ended
	Oct. 31, 2024
Balance Sheet Related Disclosures [Abstract]
Schedule of Balance Sheets Components	As of October 31, 2024 2023 (in thousands) Accounts receivable, net: Accounts receivable $ 941,312 $ 835,327 Unbilled accounts receivable 44,166 60,016 Total accounts receivable 985,478 895,343 Less: allowance for credit losses (51,008) (38,683) Total $ 934,470 $ 856,660 Property and equipment, net: Computer and other equipment $ 1,011,712 $ 973,540 Buildings 103,779 135,255 Furniture and fixtures 87,524 83,649 Land 18,219 21,598 Leasehold improvements 271,753 259,241 1,492,987 1,473,283 Less: accumulated depreciation (1) (929,981) (923,446) Total $ 563,006 $ 549,837 Other long-term assets: Deferred compensation plan assets $ 386,757 $ 297,180 Capitalized commission, net 72,801 67,240 Other 124,142 80,400 Total $ 583,700 $ 444,820 Accounts payable and accrued liabilities: Payroll and related benefits $ 624,823 $ 531,848 Accrued income taxes 147,115 226,762 Other accrued liabilities 184,321 146,696 Accounts payable 207,333 154,608 Total $ 1,163,592 $ 1,059,914 Other long-term liabilities: Deferred compensation plan liabilities $ 386,757 $ 297,180 Other 82,981 84,351 Total $ 469,738 $ 381,531 (1) Accumulated depreciation includes write-offs due to retirement of fully depreciated fixed assets.

Financial Assets and Liabilit_2

Financial Assets and Liabilities (Tables)	12 Months Ended
	Oct. 31, 2024
Financial Assets And Liabilities [Abstract]
Schedule of Cash Equivalents and Short-Term Investments	As of October 31, 2024, the balances of our cash equivalents and short-term investments are as follows: Amortized Cost Gross Gross Gross Estimated (1) (in thousands) Cash equivalents: Money market funds $ 869,972 $ — $ — $ — $ 869,972 U.S. Treasury, agency & T-bills 7,984 1 — — 7,985 Total: $ 877,956 $ 1 $ — $ — $ 877,957 Short-term investments: U.S. Treasury, agency & T-bills $ 19,411 $ 44 $ (6) $ — $ 19,449 Corporate debt securities 105,024 349 (115) (2) 105,256 Asset-backed securities 29,061 130 (7) (20) 29,164 Total: $ 153,496 $ 523 $ (128) $ (22) $ 153,869 (1) See Note 10. Fair Value Measurements for further discussion on fair values. The contractual maturities of our available-for-sale debt securities as of October 31, 2024 are as follows: Amortized Cost Fair Value (in thousands) Less than 1 year $ 57,022 $ 57,156 1-5 years 92,217 92,449 5-10 years 2,518 2,531 >10 years 1,739 1,733 Total $ 153,496 $ 153,869 As of October 31, 2023, the balances of our cash equivalents and short-term investments are as follows: Amortized Gross Gross Gross Estimated (1) (in thousands) Cash equivalents: Money market funds $ 10,129 $ — $ — $ — $ 10,129 U.S. Treasury, agency & T-bills 2,994 — — — $ 2,994 Total: $ 13,123 $ — $ — $ — $ 13,123 Short-term investments: U.S. Treasury, agency & T-bills $ 15,752 $ — $ (61) $ (2) $ 15,689 Municipal bonds 515 — — (16) 499 Corporate debt securities 103,213 13 (455) (396) 102,375 Asset-backed securities 33,245 21 (93) (97) 33,076 Total: $ 152,725 $ 34 $ (609) $ (511) $ 151,639 (1) See Note 10. Fair Value Measurements for further discussion on fair values.
Schedule of Cash, Cash Equivalents and Restricted Cash	The following table provides a reconciliation of cash, cash equivalents and restricted cash included in the consolidated balance sheets and the consolidated statements of cash flows: As of October 31, 2024 2023 (in thousands) Cash and cash equivalents $ 3,896,532 $ 1,433,966 Restricted cash included in prepaid and other current assets 1,529 1,549 Restricted cash included in other long-term assets 668 725 Cash, cash equivalents and restricted cash 3,898,729 1,436,240 Cash, cash equivalents and restricted cash from discontinued operations — 4,947 Total cash, cash equivalents and restricted cash, including cash from discontinued operations $ 3,898,729 $ 1,441,187
Schedule of Effects on Changes in Fair Values of Non-Designated Forward Contracts	The effects of the non-designated derivative instruments in our consolidated statements of income are summarized as follows: Year Ended October 31, 2024 2023 2022 (in thousands) Gains (losses) recorded in interest and other income (expense), net $ (307) $ (5,899) $ (15,851)
Schedule of Notional Amounts of Derivative Instruments	The notional amounts in the table below for derivative instruments provide one measure of the transaction volume outstanding: As of October 31, 2024 2023 (in thousands) Total gross notional amounts $ 1,686,341 $ 1,666,758 Net fair value $ 1,819 $ (2,308)
Schedule of Fair Values of Derivative Instrument Designated and Non-Designated as Hedging Instruments in Balance Sheet	The following table represents the consolidated balance sheets location and amount of derivative instrument fair values segregated between designated and non-designated hedge instruments: Fair values of Fair values of (in thousands) Balance at October 31, 2024 Other current assets $ 8,839 $ 12 Accrued liabilities $ 6,918 $ 114 Balance at October 31, 2023 Other current assets $ 12,962 $ 491 Accrued liabilities $ 14,665 $ 1,096
Schedule of Income Statement Location and Amount of Gains and Losses on Derivative Instrument Fair Values for Designated Hedge Instruments, Net of Tax	The following table represents the location of the amount of gains and losses on derivative instrument fair values for designated hedge instruments, net of tax in the consolidated statements of income: Location of gains (losses) Amount of gains (losses) Location of gains (losses) Amount of (in thousands) Fiscal year ended October 31, 2024 Foreign exchange contracts Revenue $ 3,940 Revenue $ 3,089 Foreign exchange contracts Operating expenses 5,685 Operating expenses 112 Total $ 9,625 $ 3,201 Fiscal year ended October 31, 2023 Foreign exchange contracts Revenue $ 8,390 Revenue $ (9,942) Foreign exchange contracts Operating expenses 16,596 Operating expenses (15,334) Total $ 24,986 $ (25,276) Fiscal year ended October 31, 2022 Foreign exchange contracts Revenue $ (19,755) Revenue $ 10,975 Foreign exchange contracts Operating expenses (59,314) Operating expenses (15,869) Total $ (79,069) $ (4,894)

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Oct. 31, 2024
Fair Value Disclosures [Abstract]
Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis	Assets and liabilities measured at fair value on a recurring basis are summarized below as of October 31, 2024: Fair Value Measurement Using Description Total Quoted Prices in Significant Other Significant (in thousands) Assets Cash equivalents: Money market funds $ 869,972 $ 869,972 $ — $ — U.S. Treasury, agency & T-bills 7,985 — 7,985 — Short-term investments: U.S. Treasury, agency & T-bills 19,449 — 19,449 — Corporate debt securities 105,256 — 105,256 — Asset-backed securities 29,164 — 29,164 — Prepaid and other current assets: Foreign currency derivative contracts 8,851 — 8,851 — Contingent consideration receivable 22,202 — — 22,202 Other long-term assets: Deferred compensation plan assets 386,757 386,757 — — Total assets $ 1,449,636 $ 1,256,729 $ 170,705 $ 22,202 Liabilities Accounts payable and accrued liabilities: Foreign currency derivative contracts $ 7,032 $ — $ 7,032 $ — Other long-term liabilities: Deferred compensation plan liabilities 386,757 386,757 — — Total liabilities $ 393,789 $ 386,757 $ 7,032 $ — Assets and liabilities measured at fair value on a recurring basis are summarized below as of October 31, 2023: Description Total Fair Value Measurement Using Quoted Prices in Significant Other Significant (in thousands) Assets Cash equivalents: Money market funds $ 10,129 $ 10,129 $ — $ — U.S. Treasury, agency & T-bills 2,994 — 2,994 — Short-term investments: U.S. Treasury, agency & T-bills 15,689 — 15,689 — Municipal bonds 499 — 499 — Corporate debt securities 102,375 — 102,375 — Asset-backed securities 33,076 — 33,076 — Prepaid and other current assets: Foreign currency derivative contracts 13,453 — 13,453 — Other long-term assets: Deferred compensation plan assets 297,180 297,180 — — Total assets $ 475,395 $ 307,309 $ 168,086 $ — Liabilities Accounts payable and accrued liabilities: Foreign currency derivative contracts $ 15,761 $ — $ 15,761 $ — Other long-term liabilities: Deferred compensation plan liabilities 297,180 297,180 — — Total liabilities $ 312,941 $ 297,180 $ 15,761 $ —

Leases (Tables)

Leases (Tables)	12 Months Ended
	Oct. 31, 2024
Leases [Abstract]
Schedule of Lease, Cost	The components of our lease expense during the period presented are as follows: Year Ended October 31, 2024 2023 2022 (in thousands) Operating lease expense (1) $ 92,222 $ 90,680 $ 85,631 Variable lease expense (2) 23,835 20,395 11,379 Total lease expense $ 116,057 $ 111,075 $ 97,010 (1) Operating lease expense includes immaterial amounts of short-term leases, net of sublease income. (2) Variable lease expense includes payments to lessors that are not fixed or determinable at lease commencement date. These payments primarily consist of maintenance, property taxes, insurance and variable indexed based payments. Supplemental cash flow information during the period presented is as follows: Year Ended October 31, 2024 2023 2022 (in thousands) Cash paid for amounts included in the measurement of operating lease liabilities (1) $ 99,905 $ 88,983 $ 83,858 ROU assets obtained in exchange for operating lease liabilities (2) $ 100,480 $ 101,390 $ 168,095 (1) Cash paid for amounts included in the measurement of operating lease liabilities included cash from discontinued operations of $5.2 million, $5.7 million and $6.3 million for the periods presented. (2) ROU assets obtained in exchange for operating lease liabilities included ROU assets from discontinued operations of $2.2 million, $1.2 million and $1.6 million for the periods presented.
Schedule of Lessee, Lease Term and Discount Rate	Lease term and discount rate information related to our operating leases as of the end of the period presented are as follows: As of October 31, 2024 2023 Weighted-average remaining lease term (in years) 7.59 8.44 Weighted-average discount rate 2.86 % 2.5 %
Schedule of Lessee, Operating Lease, Liability, Maturity	The following table represents the maturities of our future lease payments due under operating leases as of October 31, 2024: Lease Payments Fiscal year (in thousands) 2025 $ 111,332 2026 112,130 2027 109,380 2028 94,005 2029 86,579 2030 and thereafter 233,161 Total future minimum lease payments 746,587 Less: Imputed interest 77,731 Total lease liabilities $ 668,856
Schedule of Lessor, Operating Lease, Payment to be Received, Fiscal Year Maturity	The lease receipts from owned facilities, including sublease income from other facilities leased by us, due to us as of October 31, 2024, are as follows: Lease Receipts (in thousands) Fiscal year 2025 $ 24,479 2026 25,333 2027 26,452 2028 27,245 2029 28,063 2030 and thereafter 28,429 Total $ 160,001

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Oct. 31, 2024
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Components of Accumulated Other Comprehensive Income (Loss)	The components of accumulated other comprehensive income (loss), on an after-tax basis where applicable, are as follows: As of October 31, 2024 2023 (in thousands) Cumulative currency translation adjustments $ (161,954) $ (170,104) Unrealized gains (losses) on derivative instruments, net of taxes (18,800) (25,224) Unrealized gains (losses) on available-for-sale securities, net of taxes 374 (1,086) Total $ (180,380) $ (196,414)
Schedule of Effect of Amounts Reclassified out of Each Component of Accumulated Other Comprehensive Income (Loss) into Net Income	The effect of amounts reclassified out of each component of accumulated other comprehensive income (loss) into net income is as follows: Year Ended October 31, 2024 2023 2022 (in thousands) Reclassifications: Gains (losses) on cash flow hedges, net of taxes Revenues $ 3,089 $ (9,942) $ 10,975 Operating expenses 112 (15,334) (15,869) Total $ 3,201 $ (25,276) $ (4,894)

Stock Repurchase Program (Table

Stock Repurchase Program (Tables)	12 Months Ended
	Oct. 31, 2024
Stock Repurchase Program [Abstract]
Schedule of Stock Repurchase and Reissuance Activities	Stock repurchase activities as well as the reissuance of treasury stock for employee stock-based compensation purposes are as follows: Year Ended October 31, 2024 2023 (1) 2022 (in thousands, except per share price) Shares repurchased 74 2,992 3,609 Average purchase price per share 608.91 $ 387.92 $ 314.51 Aggregate purchase price 45,000 $ 1,160,724 $ 1,135,000 Reissuance of treasury stock 2,133 2,670 2,922 (1) Excludes 73,903 shares and $45.0 million equity forward contract that was settled in November 2023.

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Oct. 31, 2024
Share-Based Payment Arrangement [Abstract]
Schedule of Restricted Stock Units	The following table contains information concerning activities related to restricted stock units granted under the 2006 Employee Plan and assumed from acquisitions including those associated with our discontinued operations: Restricted Stock Units Outstanding (1) Weighted Weighted Aggregate (in thousands, except per share amounts and years) Balance at October 31, 2021 4,187 $ 193.58 1.39 Granted (2) 2,402 $ 323.46 Vested (3) (1,589) $ 170.36 $ 529,766 Forfeited (362) $ 228.70 Balance at October 31, 2022 4,638 $ 265.76 1.32 Granted (2) 2,083 $ 394.34 Vested (3) (1,839) $ 237.19 $ 706,136 Forfeited (365) $ 283.29 Balance at October 31, 2023 4,517 $ 335.26 1.41 Granted (2) 1,620 $ 543.69 Vested (3) (1,778) $ 303.23 $ 962,127 Forfeited (460) $ 395.74 Balance at October 31, 2024 3,899 $ 429.36 1.35 (1) No restricted stock units were assumed in connection with acquisitions in the last three fiscal years. (2) The number of granted restricted stock units includes those granted to senior management with market-based and performance-based vesting criteria (in addition to service-based vesting criteria) (market-based RSUs) reported at the maximum possible number of shares that may ultimately be issuable if all applicable market-based and performance-based criteria are achieved at their maximum levels and all applicable service-based criteria are fully satisfied. (3) The number of vested restricted stock units includes shares that were withheld on behalf of employees to satisfy the minimum statutory tax withholding requirements.
Schedule of Stock Options	The following table summarizes stock option activity and includes stock options granted under all equity plans including those associated with our discontinued operations: Options Outstanding Shares Under Stock Option (1) Weighted- Weighted- Aggregate (in thousands, except per share amounts and years) Balance at October 31, 2021 3,107 $ 109.51 3.81 $ 694,921 Granted 293 $ 342.86 Exercised (1,126) $ 86.24 Canceled/forfeited/expired (114) $ 164.46 Balance at October 31, 2022 2,160 $ 150.37 3.57 $ 328,120 Granted 294 $ 361.64 Exercised (849) $ 109.83 Canceled/forfeited/expired (90) $ 245.86 Balance at October 31, 2023 1,515 $ 208.49 3.70 $ 376,563 Granted 238 $ 551.41 Exercised (429) $ 141.83 Canceled/forfeited/expired (42) $ 376.97 Balance at October 31, 2024 1,282 $ 288.91 3.63 $ 301,781 Vested and expected to vest as of October 31, 2024 1,282 $ 288.91 3.63 $ 301,781 Exercisable at October 31, 2024 810 $ 197.95 2.54 $ 259,550 (1) No stock options were assumed in connection with acquisitions in the last three fiscal years, but the balance at fiscal year-end includes certain stock options that were previously assumed in connection with acquisitions. Year Ended October 31, 2024 2023 2022 (in thousands, except per share price) Intrinsic value $ 185,663 $ 241,385 $ 273,524 Average exercise price per share $ 141.83 $ 109.83 $ 86.24
Schedule of Restricted Stock Units and Stock Options	The following table contains additional information concerning activities related to stock options and restricted stock units that were granted under the 2006 Employee Plan and assumed from acquisitions including those associated with our discontinued operations: Available for Grant (1)(2) (in thousands) Balance at October 31, 2021 13,751 Options granted (2) (286) Options canceled/forfeited/expired (2) 114 Restricted stock units granted (1)(3) (4,083) Restricted stock units forfeited (1) 615 Additional shares reserved 3,000 Balance at October 31, 2022 13,111 Options granted (2) (294) Options canceled/forfeited/expired (2) 89 Restricted stock units granted (1)(3) (3,540) Restricted stock units forfeited (1) 620 Additional shares reserved 3,300 Balance at October 31, 2023 13,286 Options granted (2) (238) Options canceled/forfeited/expired (2) 40 Restricted stock units granted (1)(3) (2,754) Restricted stock units forfeited (1) 782 Additional shares reserved 3,400 Balance at October 31, 2024 14,516 (1) Restricted stock units includes awards granted under the 2006 Employee Plan and assumed through acquisitions. The number of RSUs reflects the application of the award multiplier of 1.70 as described above. (2) Options granted by us are not subject to the award multiplier ratio described above. (3) The number of granted restricted stock units includes market-based RSUs reported at the maximum possible number of shares that may ultimately be issuable if all applicable market-based and performance-based criteria are achieved at their maximum levels and all applicable service-based criteria are fully satisfied.
Schedule of Restricted Stock Award Activities Under 2005 Directors Plan	Restricted Stock Awards . The following table summarizes restricted stock award activities under the 2005 Directors Plan and 2017 Directors Plan: Restricted Weighted-Average (in thousands, except per share amounts) Unvested at October 31, 2021 5 $ 261.01 Granted 5 $ 310.02 Vested (5) $ 261.01 Forfeited — $ — Unvested at October 31, 2022 5 $ 310.02 Granted 5 $ 387.79 Vested (5) $ 310.02 Forfeited — $ — Unvested at October 31, 2023 5 $ 387.79 Granted 3 $ 561.23 Vested (4) $ 382.88 Forfeited — $ — Unvested at October 31, 2024 4 $ 541.51
Schedule of Stock Option Plans and Stock Purchase Rights Granted Under ESPP	The assumptions presented in the following table are used to estimate the fair value of stock options and employee stock purchase rights granted under our stock plans: Year Ended October 31, 2024 2023 2022 Stock Options: Expected life (in years) 4.1 4.1 4.1 Risk-free interest rate 3.62%- 4.61% 3.8% - 4.80% 1.07% - 4.42% Volatility 32.09% -35.42% 32.74% - 36.16% 32.28%- 37.04% Weighted average estimated fair value $178.67 $120.33 $98.07 ESPP: Expected life (in years) 0.5 - 2.0 0.5 - 2.0 0.5 - 2.0 Risk-free interest rate 3.88% - 5.27% 4.85% - 5.38% 0.67% - 3.44% Volatility 31.40% - 34.39% 28.03% - 35.27% 34.51% - 38.69% Weighted average estimated fair value $179.10 $120.82 $102.63
Schedule of Share-Based Payment Award, Restricted Stock Units, Valuation Assumptions	The grant date fair value of the market-based RSUs and the assumptions used in the Monte Carlo simulation model to determine the grant date fair value during the periods are as follows: Year Ended October 31, 2024 2023 2022 Expected life (in years) 2.89 0.90 - 2.70 1.16 - 1.69 Risk-free interest rate 4.41% 4.36% - 4.80% 1.33% - 3.46% Volatility 34.03% 34.79% - 42.86% 33.01% - 37.80% Grant date fair value $600.29 $357.29 - $465.79 $280.52 - $412.20
Schedule of Stock Compensation Expense	The compensation cost recognized in the consolidated statements of income for our stock compensation arrangements is as follows: Year Ended October 31, 2024 2023 2022 (in thousands) Cost of products $ 66,403 $ 49,896 $ 43,618 Cost of maintenance and service 32,189 29,572 24,146 Research and development expense 359,244 282,540 233,772 Sales and marketing expense 121,524 91,082 70,607 General and administrative expense 78,575 60,004 49,606 Stock-based compensation expense from continuing operations before taxes 657,935 513,094 421,749 Stock-based compensation expense from discontinued operations before taxes 34,381 50,198 37,280 Total stock-based compensation expense before taxes 692,316 563,292 459,029 Income tax benefit (115,271) (90,915) (74,271) Stock-based compensation expense after taxes $ 577,045 $ 472,377 $ 384,758
Schedule of Deferred Plan Assets and Liabilities	Deferred plan assets and liabilities are as follows: As of October 31, 2024 2023 (in thousands) Plan assets recorded in other long-term assets $ 386,757 $ 297,180 Plan liabilities recorded in other long-term liabilities (1) $ 386,757 $ 297,180 (1) Undistributed deferred compensation balances due to participants.
Schedule of Impact of Deferred Plan	The following table summarizes the impact of the Deferred Plan: Year Ended October 31, 2024 2023 2022 (in thousands) Increase (reduction) to cost of revenue and operating expense $ 85,446 $ 20,196 $ (67,516) Interest and other income (expense), net 85,446 20,196 (67,516) Net increase (decrease) to net income $ — $ — $ —

Net Income Per Share (Tables)

Net Income Per Share (Tables)	12 Months Ended
	Oct. 31, 2024
Earnings Per Share [Abstract]
Schedule of Reconciliation of Weighted-Average Common Shares Used to Calculate Net Income Per Share	The table below reconciles the weighted average common shares used to calculate basic net income per share with the weighted average common shares used to calculate diluted net income per share: Year Ended October 31, 2024 2023 2022 (in thousands, except per share amounts) Numerator: Net income from continuing operations attributed to Synopsys $ 1,441,710 $ 1,227,045 $ 970,225 Net income from discontinued operations attributed to Synopsys 821,670 2,843 14,369 Net income attributed to Synopsys $ 2,263,380 $ 1,229,888 $ 984,594 Denominator: Weighted average common shares for basic net income per share 153,138 152,146 153,002 Dilutive effect of common share equivalents from equity-based compensation 2,806 3,049 3,483 Weighted average common shares for diluted net income per share 155,944 155,195 156,485 Net income per share attributed to Synopsys - basic: Continuing operations $ 9.41 $ 8.06 $ 6.34 Discontinued operations 5.37 0.02 0.10 Basic net income per share $ 14.78 $ 8.08 $ 6.44 Net income per share attributed to Synopsys - diluted: Continuing operations $ 9.25 $ 7.91 $ 6.20 Discontinued operations 5.26 0.01 0.09 Diluted net income per share $ 14.51 $ 7.92 $ 6.29 Anti-dilutive employee stock-based awards excluded 229 475 281

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Oct. 31, 2024
Income Tax Disclosure [Abstract]
Schedule of Domestic and Foreign Components of Total Income Before Provision for Income Tax	The domestic and foreign components of our total income before provision for income taxes are as follows: Year Ended October 31, 2024 2023 2022 (in thousands) United States $ 1,333,132 $ 1,144,410 $ 1,028,829 Foreign 180,726 161,060 74,623 Total income before provision for income taxes $ 1,513,858 $ 1,305,470 $ 1,103,452
Schedule of Components of Provision (Benefit) for Income Taxes	The components of the provision (benefit) for income taxes are as follows: Year Ended October 31, 2024 2023 2022 (in thousands) Current: Federal $ 345,859 $ 252,186 $ 109,030 State 19,808 23,042 23,593 Foreign 110,021 22,869 43,076 475,688 298,097 175,699 Deferred: Federal (312,677) (191,249) (38,901) State (39,164) (219) (1,067) Foreign (24,129) (16,441) 3,654 (375,970) (207,909) (36,314) Provision (benefit) for income taxes $ 99,718 $ 90,188 $ 139,385
Schedule of Rate Reconciliation Between Provision (Benefit) for Income Taxes and Taxes Computed at Statutory Federal Rate	The provision (benefit) for income taxes differs from the taxes computed with the statutory federal income tax rate as follows: Year Ended October 31, 2024 2023 2022 (in thousands) Statutory federal tax $ 317,912 $ 274,149 $ 231,723 State tax (benefit), net of federal effect 48,393 438 (2,870) Federal tax credits (70,119) (60,500) (55,708) Tax (benefit) on foreign earnings 3,316 (17,571) 23,709 Foreign-derived intangible income deduction (104,835) (80,034) (38,816) Tax settlements — (23,752) — Stock-based compensation (43,419) (39,995) (50,469) Changes in valuation allowance (57,371) 29,631 19,794 Other 5,841 7,822 12,022 Provision (benefit) for income taxes $ 99,718 $ 90,188 $ 139,385
Schedule of Components of Deferred Tax Assets and Liabilities	The significant components of deferred tax assets and liabilities are as follows: As of October 31, 2024 2023 (in thousands) Net deferred tax assets: Deferred tax assets: Deferred revenue $ 37,849 $ 37,641 Deferred compensation 73,869 69,824 Intangible and depreciable assets 65,489 94,299 Capitalized research and development costs 978,085 591,617 Stock-based compensation 74,934 64,326 Tax loss carryovers 37,787 36,804 Foreign tax credit carryovers 42,534 41,584 Research and other tax credit carryovers 107,643 178,416 Operating Lease Liabilities 108,235 118,679 Accruals and reserves 49,935 27,636 Gross deferred tax assets 1,576,360 1,260,826 Valuation allowance (170,672) (221,713) Total deferred tax assets 1,405,688 1,039,113 Deferred tax liabilities: Intangible assets 80,034 98,305 Operating lease Right-of-Use-Assets 84,512 94,068 Accruals and reserves — 602 Undistributed earnings of foreign subsidiaries 8,800 8,900 Other 21,641 19,169 Total deferred tax liabilities 194,987 221,044 Net deferred tax assets $ 1,210,701 $ 818,069
Schedule of Tax Loss and Credit Carryforwards Available to Offset Future Income Tax Liabilities	We have the following tax loss and credit carryforwards available to offset future income tax liabilities: Carryforward Amount Expiration (in thousands) Federal net operating loss carryforward $ 69,062 2025-2043 Federal research credit carryforward 6,214 2025-2035 Federal foreign tax credit carryforward 34,217 2034 International foreign tax credit carryforward 5,337 Indefinite International net operating loss carryforward 51,326 2027-Indefinite California research credit carryforward 151,380 Indefinite Other state research credit carryforward 25,621 2027-2044 State net operating loss carryforward 138,482 2028-2045
Schedule of Reconciliation of Beginning and Ending Balance of Gross Unrecognized Tax Benefit	A reconciliation of the beginning and ending balance of gross unrecognized tax benefits is summarized as follows: As of October 31, 2024 2023 (in thousands) Beginning balance $ 64,880 $ 71,898 Increases in unrecognized tax benefits related to prior year tax positions 1,106 211 Decreases in unrecognized tax benefits related to prior year tax positions (8,639) (25,678) Increases in unrecognized tax benefits related to current year tax positions 8,036 8,029 Reductions in unrecognized tax benefits due to lapse of applicable statute of limitations (4,380) (249) Increases in unrecognized tax benefits acquired 161 165 Changes in unrecognized tax benefits due to foreign currency translation 690 10,504 Ending balance $ 61,854 $ 64,880
Schedule of Subsidiaries Remain Subject to Tax Examination	We and/or our subsidiaries remain subject to tax examination in the following jurisdictions: Jurisdiction Year(s) Subject to Examination United States Fiscal years after 2020 California Fiscal years after 2019 Ireland Fiscal years after 2019 Japan Fiscal years after 2019 Korea Fiscal years after 2020 Taiwan Fiscal years after 2022 China Fiscal years after 2014 India Fiscal years after 2019

Interest and Other Income (Ex_2

Interest and Other Income (Expense), Net (Tables)	12 Months Ended
	Oct. 31, 2024
Other Income and Expenses [Abstract]
Schedule of Components of Interest and Other Income (Expense), Net	The following table presents the components of interest and other income (expense), net: Year Ended October 31, 2024 2023 2022 (in thousands) Interest income $ 67,017 $ 36,674 $ 8,545 Interest expense (35,161) (1,178) (1,698) Gains (losses) on assets related to deferred compensation plan 85,446 20,196 (67,516) Gain on sale of strategic investments 55,077 — — Foreign currency exchange gains (losses) 6,294 (1,529) 4,694 Other, net (20,526) (21,932) 10,713 Total $ 158,147 $ 32,231 $ (45,262)

Segment Disclosure (Tables)

Segment Disclosure (Tables)	12 Months Ended
	Oct. 31, 2024
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	Information by reportable segment is as follows: Year Ended October 31, 2024 2023 2022 (in thousands) Total Segments: Revenue $ 6,127,436 $ 5,318,014 $ 4,615,714 Adjusted operating income 2,362,059 1,928,027 1,579,899 Adjusted operating margin 39 % 36 % 34 % Design Automation: Revenue $ 4,221,122 $ 3,775,288 $ 3,300,173 Adjusted operating income 1,631,885 1,413,926 1,176,101 Adjusted operating margin 39 % 37 % 36 % Design IP: Revenue $ 1,906,314 $ 1,542,726 $ 1,315,541 Adjusted operating income 730,174 514,101 403,798 Adjusted operating margin 38 % 33 % 31 %
Schedule of Reconciliation of Operating Profit (Loss) from Segments to Consolidated	The unallocated expenses managed at a consolidated level, including amortization of acquired intangible assets, stock-based compensation, changes in the fair value of deferred compensation plan, restructuring charges, and acquisition/divestiture related items, are presented in the table below to provide a reconciliation of the total adjusted operating income from segments to our consolidated operating income from continuing operations: Year Ended October 31, 2024 2023 2022 (in thousands) Total segment adjusted operating income $ 2,362,059 $ 1,928,027 $ 1,579,899 Reconciling items: Amortization of acquired intangible assets (124,234) (54,576) (56,311) Stock-based compensation expense (657,935) (513,094) (421,749) Deferred compensation plan (85,446) (20,196) 67,516 Restructuring charges — (53,091) (11,221) Acquisition/divestiture related items (138,733) (13,831) (9,420) Total operating income $ 1,355,711 $ 1,273,239 $ 1,148,714
Schedule of Revenues Related to Operations by Geographic Areas	Year Ended October 31, 2024 2023 2022 (in thousands) Revenue: United States $ 2,739,756 $ 2,462,009 $ 2,094,470 Europe 614,584 514,780 430,369 China 989,524 855,023 774,265 Korea 773,018 625,502 523,501 Other 1,010,554 860,700 793,109 Consolidated $ 6,127,436 $ 5,318,014 $ 4,615,714
Schedule of Property and Equipment by Geographic Areas	As of October 31, 2024 2023 (in thousands) Property and Equipment, net: United States $ 335,306 $ 334,272 Other 227,700 215,565 Total $ 563,006 $ 549,837

Summary of Significant Accoun_4

Summary of Significant Accounting Policies and Basis of Presentation - Additional Information (Details) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Jan. 31, 2024 segment	Oct. 31, 2024 segment	Oct. 31, 2024 USD ($)	Oct. 31, 2023 USD ($)	Oct. 31, 2022 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of reportable segments | segment	3	2
Cash and cash equivalent maturity period, months			3 months
Debt securities and other investments, minimum short term maturity, period			3 months
Debt securities and other investments, maximum maturity, period			3 years
Depreciation expenses			$ 162.9	$ 141.4	$ 103.9
Repair and maintenance costs			$ 89.4	$ 74.4	$ 65.2
Software product warranty period (in days)			90 days
Minimum
Summary Of Significant Accounting Policies [Line Items]
Intangible assets amortization period		1 year	1 year
Maximum
Summary Of Significant Accounting Policies [Line Items]
Intangible assets amortization period		13 years	13 years
Hardware product warranty period (in months)			6 months

Summary of Significant Accoun_5

Summary of Significant Accounting Policies and Basis of Presentation - Schedule of Changes in Allowance for Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	$ 50,366	$ 38,586	$ 27,034
Provisions	19,286	18,345	11,486
Write-offs/Adjustments	(5,609)	(6,565)	66
Balance at End of Period	$ 64,043	$ 50,366	$ 38,586

Summary of Significant Accoun_6

Summary of Significant Accounting Policies and Basis of Presentation - Schedule of Useful Lives of Depreciable Assets (Details)	Oct. 31, 2024
Computer and other equipment | Minimum
Property, Plant and Equipment [Line Items]
Useful lives of depreciable assets (in years)	3 years
Computer and other equipment | Maximum
Property, Plant and Equipment [Line Items]
Useful lives of depreciable assets (in years)	8 years
Buildings
Property, Plant and Equipment [Line Items]
Useful lives of depreciable assets (in years)	30 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Useful lives of depreciable assets (in years)	5 years

Discontinued Operations - Addit

Discontinued Operations - Additional Information (Details) - Discontinued operations - Software Integrity business $ in Thousands		12 Months Ended
	Sep. 30, 2024 USD ($) quarter	Oct. 31, 2024 USD ($)	Oct. 31, 2023 USD ($)	Oct. 31, 2022 USD ($)
Disposal Groups, Including Discontinued Operations [Line Items]
Sale consideration	$ 1,650,000
Cash consideration	1,480,000
Deferred consideration receivable, present value	121,500
Deferred consideration receivable	$ 125,000
Number of fiscal quarters for consideration installment payments | quarter	5
Contingent consideration receivable	$ 22,200
Contingent consideration receivable, achievement of specified rate of return	475,000
Additional consideration receivable as a result of net working capital adjustments	27,100
Derecognized net assets	720,500
Transaction costs incurred	61,700
Pre-tax gain on discontinued operation	$ 868,800	$ 868,830	$ 0	$ 0

Discontinued Operations - Sched

Discontinued Operations - Schedule of Components of Financial Results (Details) - USD ($) $ in Thousands		12 Months Ended
	Sep. 30, 2024	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Disposal Groups, Including Discontinued Operations [Line Items]
Income from discontinued operations, net of income taxes		$ 821,670	$ 2,843	$ 14,369
Discontinued operations | Software Integrity business
Disposal Groups, Including Discontinued Operations [Line Items]
Revenue		468,720	524,605	465,828
Cost of revenue		153,081	191,350	165,684
Operating expenses		265,029	337,235	286,820
Interest and other income (expense), net		2,003	292	(1,262)
Income (loss) from discontinued operations		52,613	(3,688)	12,062
Gain on Software Integrity Divestiture	$ 868,800	868,830	0	0
Income (loss) from discontinued operations before income taxes		921,443	(3,688)	12,062
Income tax provision (benefit)		99,773	(6,531)	(2,307)
Income from discontinued operations, net of income taxes		$ 821,670	$ 2,843	$ 14,369

Discontinued Operations - Sch_2

Discontinued Operations - Schedule of Assets and Liabilities Classified as Discontinued Operations (Details) - USD ($) $ in Thousands	Oct. 31, 2024	Oct. 31, 2023
Assets:
Total current assets of discontinued operations	$ 0	$ 114,654
Total long-term assets of discontinued operations	0	908,759
Liabilities:
Total current liabilities of discontinued operations	0	286,244
Total long-term liabilities of discontinued operations	$ 0	33,257
Discontinued operations | Software Integrity business
Assets:
Cash and cash equivalents		4,947
Accounts receivable, net		90,307
Prepaid and other current assets		19,400
Total current assets of discontinued operations		114,654
Property and equipment, net		7,424
Operating lease right-of use assets, net		8,906
Goodwill		724,271
Intangible assets, net		134,617
Deferred income taxes		7,388
Other long-term assets		26,153
Total long-term assets of discontinued operations		908,759
Liabilities:
Accounts payable and accrued liabilities		63,847
Operating lease liabilities		5,858
Deferred revenue		216,539
Total current liabilities of discontinued operations		286,244
Long-term operating lease liabilities		4,349
Long-term deferred revenue		24,301
Other long-term liabilities		4,607
Total long-term liabilities of discontinued operations		$ 33,257

Discontinued Operations - Sch_3

Discontinued Operations - Schedule of Significant Non-cash Items and Capital Expenditures of Discontinued Operations (Details) - Discontinued operations - Software Integrity business - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Disposal Groups, Including Discontinued Operations [Line Items]
Amortization and depreciation	$ 16,317	$ 51,971	$ 44,173
Reduction of operating lease right-of-use assets	2,162	5,120	4,898
Amortization of capitalized costs to obtain revenue contracts	25,051	30,071	23,090
Stock-based compensation	34,381	50,198	37,280
Deferred income taxes	(31,679)	(3,136)	(599)
Purchases of property and equipment	$ 1,487	$ 3,232	$ 3,610

Pending Acquisition of Ansys (D

Pending Acquisition of Ansys (Details) $ / shares in Units, $ in Millions	6 Months Ended
	Jun. 30, 2025 USD ($) $ / shares	Oct. 31, 2024 USD ($)	Oct. 03, 2024 USD ($)	Feb. 13, 2024 USD ($)
Bridge Commitment | Bridge Loan | Line of Credit
Business Acquisition [Line Items]
Decrease in credit facility maximum borrowing capacity			$ 1,100
Credit facility maximum borrowing capacity		$ 10,600	$ 10,600
Term Loan Agreement | Line of Credit
Business Acquisition [Line Items]
Credit facility maximum borrowing capacity				$ 4,300
ANSYS, Inc. | Forecast
Business Acquisition [Line Items]
Total purchase consideration	$ 35,000
Business acquisition, exchange ratio	0.3450
Business acquisition, share price | $ / shares	$ 197
Business acquisition, maximum stock to be issued as a percentage of stock issued and outstanding	19.9999%
Termination fee payable	$ 1,500
Termination fee receivable	$ 950

Business Combinations (Details)

Business Combinations (Details)		3 Months Ended		12 Months Ended
	Jun. 22, 2022 USD ($)	Oct. 31, 2024 USD ($)	Apr. 30, 2022 USD ($)	Oct. 31, 2024 USD ($)	Oct. 31, 2023 USD ($)	Oct. 31, 2022 USD ($) acquisition
Business Acquisition [Line Items]
Goodwill		$ 3,448,850,000		$ 3,448,850,000	$ 3,346,065,000	$ 3,121,071,000
Impairment of intangible assets		53,500,000		53,500,000
Redeemable non-controlling interest		$ 30,000,000		30,000,000	31,043,000
Acquisition-related costs				$ 172,600,000	13,800,000	9,400,000
OpenLight
Business Acquisition [Line Items]
Ownership percentage		71%		71%
Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Total purchase consideration				$ 159,300,000	295,400,000	31,800,000
Identifiable intangible assets		$ 78,900,000		78,900,000	95,800,000	12,700,000
Goodwill		96,100,000		96,100,000
Net tangible liabilities		15,700,000		15,700,000	29,800,000	$ 3,100,000
Goodwill, expected tax deductible amount		0		0
Number of acquisitions | acquisition						2
Series of Individually Immaterial Business Acquisitions | Design Automation
Business Acquisition [Line Items]
Goodwill		61,800,000		61,800,000	229,400,000	$ 22,200,000
Goodwill, expected tax deductible amount					5,700,000	0
Series of Individually Immaterial Business Acquisitions | Design IP
Business Acquisition [Line Items]
Goodwill		34,300,000		$ 34,300,000
Series of Individually Immaterial Business Acquisitions | Minimum
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life				3 years
Series of Individually Immaterial Business Acquisitions | Maximum
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life				13 years
OpenLight
Business Acquisition [Line Items]
Total purchase consideration			$ 90,000,000
Identifiable intangible assets			$ 94,000,000
Percent of company acquired			75%
Percentage of equity interests held by non-controlling interest			25%
Redeemable noncontrolling interest, redemption value			$ 30,000,000
Redeemable noncontrolling interest, put option value			10,100,000
Consideration transferred including redeemable noncontrolling interest			100,100,000
Net loss of acquiree				$ 91,700,000	40,900,000	19,400,000
Net loss of acquiree attributable to redeemable non-controlling interest				22,000,000	10,000,000	$ 4,900,000
Redeemable non-controlling interest		$ 30,000,000		$ 30,000,000	$ 31,000,000
OpenLight | Design Automation
Business Acquisition [Line Items]
Goodwill			46,700,000
Goodwill, expected tax deductible amount			$ 0
NTT Security AppSec Solutions Inc
Business Acquisition [Line Items]
Total purchase consideration	$ 310,000,000
Identifiable intangible assets	97,500,000
Goodwill	252,900,000
Net tangible liabilities	40,400,000
Goodwill, expected tax deductible amount	$ 0

Revenue - Schedule of Disaggreg

Revenue - Schedule of Disaggregation of Revenue (Details) - Product Concentration Risk - Revenues	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Disaggregation of Revenue [Line Items]
Revenue percentage by product group	100%	100%	100%
EDA
Disaggregation of Revenue [Line Items]
Revenue percentage by product group	66.40%	69.20%	69.20%
Design IP
Disaggregation of Revenue [Line Items]
Revenue percentage by product group	31.10%	29%	28.50%
Other
Disaggregation of Revenue [Line Items]
Revenue percentage by product group	2.50%	1.80%	2.30%

Revenue - Schedule of Contract

Revenue - Schedule of Contract Assets and Liabilities (Details) - USD ($) $ in Thousands	Oct. 31, 2024	Oct. 31, 2023
Revenue from Contract with Customer [Abstract]
Contract assets, net	$ 757,075	$ 375,904
Unbilled receivables	44,166	60,016
Deferred revenue	$ 1,732,568	$ 1,710,288

Revenue - Additional Informatio

Revenue - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract with customer, liability, revenue recognized	$ 1,500	$ 1,500
Revenue, remaining performance obligation, amount	8,100	8,100
Revenue, remaining performance obligation, non-cancellable, amount	1,200	1,400
Capitalized contract cost, net	72.8	67.2
Amortization of capitalized costs to obtain revenue contracts	$ 48.5	52.1	$ 49.9
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-11-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, percentage	41%
Revenue, remaining performance obligation, expected timing of satisfaction, period	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-11-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, expected timing of satisfaction, period	3 years
Sales Based Royalties
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contract with customer, liability, revenue recognized	$ 104.4	$ 99.3

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Additional Information (Details)	3 Months Ended		9 Months Ended	12 Months Ended
	Oct. 31, 2024 USD ($)	Jan. 31, 2024 segment	Oct. 31, 2024 segment reporting_unit	Oct. 31, 2024 USD ($)	Oct. 31, 2023 USD ($)	Oct. 31, 2022 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Number of reportable segments | segment		3	2
Number of reporting units | reporting_unit			2
Goodwill impairment loss				$ 0	$ 0	$ 0
Impairment of intangible assets	$ 53,500,000			$ 53,500,000
Impairment of intangible assets, location				Amortization of acquired intangible assets
Long-lived assets impairment loss				$ 0	$ 0	$ 0

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Schedule of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023
Goodwill [Roll Forward]
Beginning Balance	$ 3,346,065	$ 3,121,071
Additions	96,142	229,351
Adjustments	170
Effect of foreign currency translation	6,473	(4,357)
Ending balance	3,448,850	3,346,065
Design Automation
Goodwill [Roll Forward]
Beginning Balance	2,400,682	2,176,337
Additions	61,803	229,351
Adjustments	170
Effect of foreign currency translation	6,602	(5,006)
Ending balance	2,469,257	2,400,682
Design IP
Goodwill [Roll Forward]
Beginning Balance	945,383	944,734
Additions	34,339	0
Adjustments	0
Effect of foreign currency translation	(129)	649
Ending balance	$ 979,593	$ 945,383

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Oct. 31, 2024	Oct. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,407,794	$ 1,378,798
Accumulated Amortization and Impairment	1,212,630	1,139,221
Total	195,164	239,577
Core/developed technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	904,347	842,448
Accumulated Amortization and Impairment	777,518	672,480
Total	126,829	169,968
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	314,140	296,883
Accumulated Amortization and Impairment	247,025	231,557
Total	67,115	65,326
Contract rights intangible
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	176,382	175,747
Accumulated Amortization and Impairment	175,170	171,487
Total	1,212	4,260
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	12,925	12,925
Accumulated Amortization and Impairment	12,917	12,902
Total	$ 8	23
Capitalized software development costs
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount		50,795
Accumulated Amortization and Impairment		50,795
Total		$ 0

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets - Schedule of Amortization Expense Related to Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible expense	$ 124,234	$ 59,346	$ 58,983
Core/developed technology
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible expense	104,797	42,892	42,582
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible expense	15,550	9,288	11,389
Contract rights intangible
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible expense	3,872	2,389	2,307
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible expense	15	7	33
Capitalized software development costs
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible expense	$ 0	$ 4,770	$ 2,672

Goodwill and Intangible Asset_6

Goodwill and Intangible Assets - Schedule of Estimated Future Amortization of Intangible Assets (Details) - USD ($) $ in Thousands	Oct. 31, 2024	Oct. 31, 2023
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2025	$ 46,436
2026	36,112
2027	31,165
2028	25,572
2029	23,038
2030 and thereafter	32,841
Total	$ 195,164	$ 239,577

Balance Sheet Components (Detai

Balance Sheet Components (Details) - USD ($) $ in Thousands	Oct. 31, 2024	Oct. 31, 2023
Accounts receivable, net:
Accounts receivable	$ 941,312	$ 835,327
Unbilled accounts receivable	44,166	60,016
Total accounts receivable	985,478	895,343
Less: allowance for credit losses	(51,008)	(38,683)
Total	934,470	856,660
Property and equipment, net:
Computer and other equipment	1,011,712	973,540
Buildings	103,779	135,255
Furniture and fixtures	87,524	83,649
Land	18,219	21,598
Leasehold improvements	271,753	259,241
Property and equipment gross	1,492,987	1,473,283
Less accumulated depreciation	(929,981)	(923,446)
Total	563,006	549,837
Other long-term assets:
Deferred compensation plan assets	386,757	297,180
Capitalized commission, net	72,801	67,240
Other	124,142	80,400
Total	583,700	444,820
Accounts payable and accrued liabilities:
Payroll and related benefits	624,823	531,848
Accrued income taxes	147,115	226,762
Other accrued liabilities	184,321	146,696
Accounts payable	207,333	154,608
Total	1,163,592	1,059,914
Other long-term liabilities:
Deferred compensation plan liabilities	386,757	297,180
Other	82,981	84,351
Total	$ 469,738	$ 381,531

Financial Assets and Liabilit_3

Financial Assets and Liabilities - Schedule of Cash Equivalents and Short-Term Investments (Details) - USD ($) $ in Thousands	Oct. 31, 2024	Oct. 31, 2023
Cash Equivalents and Short-term Investments [Line Items]
Total	$ 153,496	$ 152,725
Gross Unrealized Gains	523	34
Gross Unrealized Losses Less Than 12 Continuous Months	(128)	(609)
Gross Unrealized Losses 12 Continuous Months or Longer	(22)	(511)
Estimated fair value	153,869	151,639
Cash equivalents
Cash Equivalents and Short-term Investments [Line Items]
Total	877,956	13,123
Gross Unrealized Gains	1	0
Gross Unrealized Losses Less Than 12 Continuous Months	0	0
Gross Unrealized Losses 12 Continuous Months or Longer	0	0
Estimated fair value	877,957	13,123
Cash equivalents | Money market funds
Cash Equivalents and Short-term Investments [Line Items]
Total	869,972	10,129
Gross Unrealized Gains	0	0
Gross Unrealized Losses Less Than 12 Continuous Months	0	0
Gross Unrealized Losses 12 Continuous Months or Longer	0	0
Estimated fair value	869,972	10,129
Cash equivalents | U.S. Treasury, agency & T-bills
Cash Equivalents and Short-term Investments [Line Items]
Total	7,984	2,994
Gross Unrealized Gains	1	0
Gross Unrealized Losses Less Than 12 Continuous Months	0	0
Gross Unrealized Losses 12 Continuous Months or Longer	0	0
Estimated fair value	7,985	2,994
Short-term Investments | U.S. Treasury, agency & T-bills
Cash Equivalents and Short-term Investments [Line Items]
Total	19,411	15,752
Gross Unrealized Gains	44	0
Gross Unrealized Losses Less Than 12 Continuous Months	(6)	(61)
Gross Unrealized Losses 12 Continuous Months or Longer	0	(2)
Estimated fair value	19,449	15,689
Short-term Investments | Municipal bonds
Cash Equivalents and Short-term Investments [Line Items]
Total		515
Gross Unrealized Gains		0
Gross Unrealized Losses Less Than 12 Continuous Months		0
Gross Unrealized Losses 12 Continuous Months or Longer		(16)
Estimated fair value		499
Short-term Investments | Corporate debt securities
Cash Equivalents and Short-term Investments [Line Items]
Total	105,024	103,213
Gross Unrealized Gains	349	13
Gross Unrealized Losses Less Than 12 Continuous Months	(115)	(455)
Gross Unrealized Losses 12 Continuous Months or Longer	(2)	(396)
Estimated fair value	105,256	102,375
Short-term Investments | Asset-backed securities
Cash Equivalents and Short-term Investments [Line Items]
Total	29,061	33,245
Gross Unrealized Gains	130	21
Gross Unrealized Losses Less Than 12 Continuous Months	(7)	(93)
Gross Unrealized Losses 12 Continuous Months or Longer	(20)	(97)
Estimated fair value	$ 29,164	$ 33,076

Financial Assets and Liabilit_4

Financial Assets and Liabilities - Additional Information (Details) - USD ($)	1 Months Ended	12 Months Ended
	Nov. 30, 2023	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Financial Assets And Liabilities [Line Items]
Gain on sale of strategic investments	$ 55,100,000	$ 55,077,000	$ 0	$ 0
Impairment of non-marketable equity securities		$ 0	0	0
Shipments period using hedges (in months)		1 month
Gains (losses) related to discontinuation of cash flow hedges		$ 0	$ 0	$ 0
Fair values of derivative instruments not designated as hedging instruments
Financial Assets And Liabilities [Line Items]
Forward contracts terms (in months)		1 month
Cash Flow Hedging
Financial Assets And Liabilities [Line Items]
Period for hedge balance in OCI to be reclassified to statement of operations (in months)		12 months
Foreign Exchange Contracts | Fair values of derivative instruments not designated as hedging instruments
Financial Assets And Liabilities [Line Items]
Non-designated foreign exchange forward contract remaining maturity		1 year
Minimum | Foreign currency derivative contracts
Financial Assets And Liabilities [Line Items]
Derivative maturity period		2 months
Minimum | Foreign exchange forward | Cash Flow Hedging
Financial Assets And Liabilities [Line Items]
Derivative maturity period		29 months
Maximum
Financial Assets And Liabilities [Line Items]
Short-term investments, term		3 years
Maximum | Foreign currency derivative contracts
Financial Assets And Liabilities [Line Items]
Derivative maturity period		29 months
Maximum | Foreign exchange forward | Cash Flow Hedging
Financial Assets And Liabilities [Line Items]
Derivative maturity period		3 years

Financial Assets and Liabilit_5

Financial Assets and Liabilities - Schedule of Maturity for Short-Term Available for Sale Securities (Details) - USD ($) $ in Thousands	Oct. 31, 2024	Oct. 31, 2023
Amortized Cost
Less than 1 year	$ 57,022
1-5 years	92,217
5-10 years	2,518
>10 years	1,739
Total	153,496	$ 152,725
Fair Value
Less than 1 year	57,156
1-5 years	92,449
5-10 years	2,531
>10 years	1,733
Total	$ 153,869	$ 151,639

Financial Assets and Liabilit_6

Financial Assets and Liabilities - Schedule of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2021
Financial Assets And Liabilities [Abstract]
Cash and cash equivalents	$ 3,896,532	$ 1,433,966
Restricted cash included in prepaid and other current assets	1,529	1,549
Restricted cash included in other long-term assets	668	725
Cash, cash equivalents and restricted cash	3,898,729	1,436,240	$ 1,415,595
Cash, cash equivalents and restricted cash from discontinued operations	0	4,947	4,269
Total cash, cash equivalents and restricted cash, including cash from discontinued operations	$ 3,898,729	$ 1,441,187	$ 1,419,864	$ 1,435,183

Financial Assets and Liabilit_7

Financial Assets and Liabilities - Effects on Changes in Fair Values of Non-Designated Forward Contracts (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Financial Assets And Liabilities [Abstract]
Gains (losses) recorded in interest and other income (expense), net	$ (307)	$ (5,899)	$ (15,851)

Financial Assets and Liabilit_8

Financial Assets and Liabilities - Notional Amounts of Derivative Instruments (Details) - USD ($) $ in Thousands	Oct. 31, 2024	Oct. 31, 2023
Financial Assets And Liabilities [Abstract]
Total gross notional amounts	$ 1,686,341	$ 1,666,758
Net fair value	$ 1,819	$ (2,308)

Financial Assets and Liabilit_9

Financial Assets and Liabilities - Fair Values of Derivative Instrument Designated and Non-Designated as Hedging Instruments in Balance Sheet (Details) - USD ($) $ in Thousands	Oct. 31, 2024	Oct. 31, 2023
Fair values of derivative instruments designated as hedging instruments | Other current assets
Financial Assets And Liabilities [Line Items]
Fair values of derivative instruments, assets	$ 8,839	$ 12,962
Fair values of derivative instruments designated as hedging instruments | Accrued liabilities
Financial Assets And Liabilities [Line Items]
Fair values of derivative instruments, liabilities	6,918	14,665
Fair values of derivative instruments not designated as hedging instruments | Other current assets
Financial Assets And Liabilities [Line Items]
Fair values of derivative instruments, assets	12	491
Fair values of derivative instruments not designated as hedging instruments | Accrued liabilities
Financial Assets And Liabilities [Line Items]
Fair values of derivative instruments, liabilities	$ 114	$ 1,096

Financial Assets and Liabili_10

Financial Assets and Liabilities - Income Statement Location and Amount of Gains and Losses on Derivative Instrument Fair Values for Designated Hedge Instruments, Net of Tax (Details) - Foreign Exchange Contracts - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Financial Assets And Liabilities [Line Items]
Amount of gains (losses) recognized in  OCI on derivatives (effective portion)	$ 9,625	$ 24,986	$ (79,069)
Amount of gains (losses) reclassified  from OCI (effective  portion)	3,201	(25,276)	(4,894)
Revenue
Financial Assets And Liabilities [Line Items]
Amount of gains (losses) recognized in  OCI on derivatives (effective portion)	3,940	8,390	(19,755)
Amount of gains (losses) reclassified  from OCI (effective  portion)	3,089	(9,942)	10,975
Operating expenses
Financial Assets And Liabilities [Line Items]
Amount of gains (losses) recognized in  OCI on derivatives (effective portion)	5,685	16,596	(59,314)
Amount of gains (losses) reclassified  from OCI (effective  portion)	$ 112	$ (15,334)	$ (15,869)

Fair Value Measurements (Detail

Fair Value Measurements (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Oct. 31, 2024	Oct. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets	$ 1,449,636	$ 475,395
Total liabilities	393,789	312,941
Deferred compensation plan liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other long-term liabilities	386,757	297,180
Foreign currency derivative contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign currency derivative contracts	8,851	13,453
Foreign currency derivative contracts	7,032	15,761
Money market funds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents		10,129
U.S. Treasury, agency & T-bills
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents		2,994
Short-term investments		15,689
Municipal bonds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments		499
Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments		102,375
Asset-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments		33,076
Contingent consideration receivable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Contingent consideration receivable	22,202
Cash equivalents | Money market funds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	869,972
Cash equivalents | U.S. Treasury, agency & T-bills
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	7,985
Short-term Investments | U.S. Treasury, agency & T-bills
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	19,449
Short-term Investments | Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	105,256
Short-term Investments | Asset-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	29,164
Deferred compensation plan assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Deferred compensation plan assets	386,757	297,180
Quoted Prices in  Active Markets  for Identical Assets (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets	1,256,729	307,309
Total liabilities	386,757	297,180
Quoted Prices in  Active Markets  for Identical Assets (Level 1) | Deferred compensation plan liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other long-term liabilities	386,757	297,180
Quoted Prices in  Active Markets  for Identical Assets (Level 1) | Foreign currency derivative contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign currency derivative contracts	0	0
Foreign currency derivative contracts	0	0
Quoted Prices in  Active Markets  for Identical Assets (Level 1) | Money market funds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents		10,129
Quoted Prices in  Active Markets  for Identical Assets (Level 1) | U.S. Treasury, agency & T-bills
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents		0
Short-term investments		0
Quoted Prices in  Active Markets  for Identical Assets (Level 1) | Municipal bonds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments		0
Quoted Prices in  Active Markets  for Identical Assets (Level 1) | Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments		0
Quoted Prices in  Active Markets  for Identical Assets (Level 1) | Asset-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments		0
Quoted Prices in  Active Markets  for Identical Assets (Level 1) | Contingent consideration receivable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Contingent consideration receivable	0
Quoted Prices in  Active Markets  for Identical Assets (Level 1) | Cash equivalents | Money market funds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	869,972
Quoted Prices in  Active Markets  for Identical Assets (Level 1) | Cash equivalents | U.S. Treasury, agency & T-bills
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	0
Quoted Prices in  Active Markets  for Identical Assets (Level 1) | Short-term Investments | U.S. Treasury, agency & T-bills
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	0
Quoted Prices in  Active Markets  for Identical Assets (Level 1) | Short-term Investments | Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	0
Quoted Prices in  Active Markets  for Identical Assets (Level 1) | Short-term Investments | Asset-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	0
Quoted Prices in  Active Markets  for Identical Assets (Level 1) | Deferred compensation plan assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Deferred compensation plan assets	386,757	297,180
Significant Other Observable Inputs (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets	170,705	168,086
Total liabilities	7,032	15,761
Significant Other Observable Inputs (Level 2) | Deferred compensation plan liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other long-term liabilities	0	0
Significant Other Observable Inputs (Level 2) | Foreign currency derivative contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign currency derivative contracts	8,851	13,453
Foreign currency derivative contracts	7,032	15,761
Significant Other Observable Inputs (Level 2) | Money market funds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents		0
Significant Other Observable Inputs (Level 2) | U.S. Treasury, agency & T-bills
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents		2,994
Short-term investments		15,689
Significant Other Observable Inputs (Level 2) | Municipal bonds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments		499
Significant Other Observable Inputs (Level 2) | Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments		102,375
Significant Other Observable Inputs (Level 2) | Asset-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments		33,076
Significant Other Observable Inputs (Level 2) | Contingent consideration receivable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Contingent consideration receivable	0
Significant Other Observable Inputs (Level 2) | Cash equivalents | Money market funds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	0
Significant Other Observable Inputs (Level 2) | Cash equivalents | U.S. Treasury, agency & T-bills
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	7,985
Significant Other Observable Inputs (Level 2) | Short-term Investments | U.S. Treasury, agency & T-bills
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	19,449
Significant Other Observable Inputs (Level 2) | Short-term Investments | Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	105,256
Significant Other Observable Inputs (Level 2) | Short-term Investments | Asset-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	29,164
Significant Other Observable Inputs (Level 2) | Deferred compensation plan assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Deferred compensation plan assets	0	0
Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets	22,202	0
Total liabilities	0	0
Significant Unobservable Inputs (Level 3) | Deferred compensation plan liabilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other long-term liabilities	0	0
Significant Unobservable Inputs (Level 3) | Foreign currency derivative contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign currency derivative contracts	0	0
Foreign currency derivative contracts	0	0
Significant Unobservable Inputs (Level 3) | Money market funds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents		0
Significant Unobservable Inputs (Level 3) | U.S. Treasury, agency & T-bills
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents		0
Short-term investments		0
Significant Unobservable Inputs (Level 3) | Municipal bonds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments		0
Significant Unobservable Inputs (Level 3) | Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments		0
Significant Unobservable Inputs (Level 3) | Asset-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments		0
Significant Unobservable Inputs (Level 3) | Contingent consideration receivable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Contingent consideration receivable	22,202
Significant Unobservable Inputs (Level 3) | Cash equivalents | Money market funds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	0
Significant Unobservable Inputs (Level 3) | Cash equivalents | U.S. Treasury, agency & T-bills
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash equivalents	0
Significant Unobservable Inputs (Level 3) | Short-term Investments | U.S. Treasury, agency & T-bills
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	0
Significant Unobservable Inputs (Level 3) | Short-term Investments | Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	0
Significant Unobservable Inputs (Level 3) | Short-term Investments | Asset-backed securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Short-term investments	0
Significant Unobservable Inputs (Level 3) | Deferred compensation plan assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Deferred compensation plan assets	$ 0	$ 0

Bridge Commitment Letter, Ter_2

Bridge Commitment Letter, Term Loan and Revolving Credit Facilities (Details) ¥ in Millions, $ in Millions				1 Months Ended
	Jun. 30, 2025	May 14, 2024	Feb. 13, 2024 USD ($)	Jul. 31, 2018 USD ($)	Oct. 31, 2024 USD ($)	Oct. 03, 2024 USD ($)	Oct. 31, 2023 USD ($)	Jul. 31, 2018 CNY (¥)
Foreign Line of Credit
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity				$ 33				¥ 220
Debt instrument, term				12 years
Amount outstanding					$ 15.6
Borrowings, interest rate				0.74%
Term Loan Agreement | Line of Credit
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity			$ 4,300
Bridge Loan | Bridge Commitment | Line of Credit
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity					10,600	$ 10,600
Decrease in credit facility maximum borrowing capacity						$ 1,100
Unsecured Debt | Term Loan Agreement | Line of Credit
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity			4,300
Amount outstanding					0
Commitment fees percentage		0.10%
Unsecured Debt | Term Loan Agreement, Tranche One | Line of Credit
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity			$ 1,450
Debt instrument, term			2 years
Unsecured Debt | Term Loan Agreement, Tranche One | Line of Credit | Minimum | SOFR
Debt Instrument [Line Items]
Borrowings, interest rate			0.875%
Unsecured Debt | Term Loan Agreement, Tranche One | Line of Credit | Minimum | ABR
Debt Instrument [Line Items]
Borrowings, interest rate			0%
Unsecured Debt | Term Loan Agreement, Tranche One | Line of Credit | Maximum | SOFR
Debt Instrument [Line Items]
Borrowings, interest rate			1.375%
Unsecured Debt | Term Loan Agreement, Tranche One | Line of Credit | Maximum | ABR
Debt Instrument [Line Items]
Borrowings, interest rate			0.375%
Unsecured Debt | Term Loan Agreement, Tranche Two | Line of Credit
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity			$ 2,850
Debt instrument, term			3 years
Unsecured Debt | Term Loan Agreement, Tranche Two | Line of Credit | Minimum | SOFR
Debt Instrument [Line Items]
Borrowings, interest rate			1%
Unsecured Debt | Term Loan Agreement, Tranche Two | Line of Credit | Minimum | ABR
Debt Instrument [Line Items]
Borrowings, interest rate			0%
Unsecured Debt | Term Loan Agreement, Tranche Two | Line of Credit | Maximum | SOFR
Debt Instrument [Line Items]
Borrowings, interest rate			1.50%
Unsecured Debt | Term Loan Agreement, Tranche Two | Line of Credit | Maximum | ABR
Debt Instrument [Line Items]
Borrowings, interest rate			0.50%
Revolving Credit Facility | Senior Unsecured Committed Multicurrency Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity			$ 850
Revolving Credit Facility | Unsecured Uncommitted Incremental Revolving Loan Facility | Line of Credit
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity			$ 150
Revolving Credit Facility | Revolving Credit Agreement | Line of Credit
Debt Instrument [Line Items]
Amount outstanding					$ 0		$ 0
Revolving Credit Facility | Revolving Credit Agreement | Line of Credit | ABR
Debt Instrument [Line Items]
Borrowings, interest rate			0%
Revolving Credit Facility | Revolving Credit Agreement | Line of Credit | Minimum
Debt Instrument [Line Items]
Commitment fees percentage			0.09%
Revolving Credit Facility | Revolving Credit Agreement | Line of Credit | Minimum | Forecast
Debt Instrument [Line Items]
Commitment fees percentage	0.08%
Revolving Credit Facility | Revolving Credit Agreement | Line of Credit | Minimum | SOFR
Debt Instrument [Line Items]
Borrowings, interest rate			0.785%
Revolving Credit Facility | Revolving Credit Agreement | Line of Credit | Minimum | SOFR | Forecast
Debt Instrument [Line Items]
Borrowings, interest rate	0.795%
Revolving Credit Facility | Revolving Credit Agreement | Line of Credit | Minimum | ABR | Forecast
Debt Instrument [Line Items]
Borrowings, interest rate	0%
Revolving Credit Facility | Revolving Credit Agreement | Line of Credit | Maximum
Debt Instrument [Line Items]
Commitment fees percentage			0.15%
Revolving Credit Facility | Revolving Credit Agreement | Line of Credit | Maximum | Forecast
Debt Instrument [Line Items]
Commitment fees percentage	0.175%
Revolving Credit Facility | Revolving Credit Agreement | Line of Credit | Maximum | SOFR
Debt Instrument [Line Items]
Borrowings, interest rate			0.975%
Revolving Credit Facility | Revolving Credit Agreement | Line of Credit | Maximum | SOFR | Forecast
Debt Instrument [Line Items]
Borrowings, interest rate	1.20%
Revolving Credit Facility | Revolving Credit Agreement | Line of Credit | Maximum | ABR | Forecast
Debt Instrument [Line Items]
Borrowings, interest rate	0.20%

Leases - Additional Information

Leases - Additional Information (Details)	Oct. 31, 2024
Leases [Abstract]
Lessee, operating lease, renewal term	10 years

Leases - Components of Leases E

Leases - Components of Leases Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Leases [Abstract]
Operating lease expense	$ 92,222	$ 90,680	$ 85,631
Variable lease expense	23,835	20,395	11,379
Total lease expense	$ 116,057	$ 111,075	$ 97,010

Leases - Supplemental Cash Flow

Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Schedule Of Supplemental Cash Flow Information [Line Items]
Cash paid for amounts included in the measurement of operating lease liabilities	$ 99,905	$ 88,983	$ 83,858
ROU assets obtained in exchange for operating lease liabilities	100,480	101,390	168,095
Discontinued operations
Schedule Of Supplemental Cash Flow Information [Line Items]
Cash paid for amounts included in the measurement of operating lease liabilities	5,200	5,700	6,300
ROU assets obtained in exchange for operating lease liabilities	$ 2,200	$ 1,200	$ 1,600

Leases - Lease Term and Discoun

Leases - Lease Term and Discount Rate Information (Details)	Oct. 31, 2024	Oct. 31, 2023
Leases [Abstract]
Weighted-average remaining lease term (in years)	7 years 7 months 2 days	8 years 5 months 8 days
Weighted-average discount rate	2.86%	2.50%

Leases - Future Minimum Payment

Leases - Future Minimum Payments (Details) $ in Thousands	Oct. 31, 2024 USD ($)
Leases [Abstract]
2025	$ 111,332
2026	112,130
2027	109,380
2028	94,005
2029	86,579
2030 and thereafter	233,161
Total future minimum lease payments	746,587
Less: Imputed interest	77,731
Total lease liabilities	$ 668,856

Leases - Non-cancellable Operat

Leases - Non-cancellable Operating Leases (Details) $ in Thousands	Oct. 31, 2024 USD ($)
Leases [Abstract]
2025	$ 24,479
2026	25,333
2027	26,452
2028	27,245
2029	28,063
2030 and thereafter	28,429
Total	$ 160,001

Contingencies (Details)

Contingencies (Details) - Mentor patent litigation $ in Millions	Jun. 29, 2018 USD ($)
Loss Contingencies [Line Items]
Payments for legal settlements	$ 65
Patent cross-license term	7 years
Minimum
Loss Contingencies [Line Items]
Potential one-time termination charge	$ 0
Maximum
Loss Contingencies [Line Items]
Potential one-time termination charge	$ 25

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	Oct. 31, 2024	Oct. 31, 2023
Reclassification Adjustment Balance In Accumulated Other Comprehensive Income [Line Items]
Accumulated other comprehensive income (loss)	$ (180,380)	$ (196,414)
Cumulative currency translation adjustments
Reclassification Adjustment Balance In Accumulated Other Comprehensive Income [Line Items]
Accumulated other comprehensive income (loss)	(161,954)	(170,104)
Unrealized gains (losses) on derivative instruments, net of taxes
Reclassification Adjustment Balance In Accumulated Other Comprehensive Income [Line Items]
Accumulated other comprehensive income (loss)	(18,800)	(25,224)
Unrealized gains (losses) on available-for-sale securities, net of taxes
Reclassification Adjustment Balance In Accumulated Other Comprehensive Income [Line Items]
Accumulated other comprehensive income (loss)	$ 374	$ (1,086)

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income (Loss) - Reclassifications (Details) - Amount of gains (losses) reclassified  from OCI (effective  portion) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Reclassification Adjustment Balance In Accumulated Other Comprehensive Income [Line Items]
Reclassifications into net income	$ 3,201	$ (25,276)	$ (4,894)
Revenues | Unrealized gains (losses) on derivative instruments, net of taxes
Reclassification Adjustment Balance In Accumulated Other Comprehensive Income [Line Items]
Reclassifications into net income	3,089	(9,942)	10,975
Operating expenses | Unrealized gains (losses) on derivative instruments, net of taxes
Reclassification Adjustment Balance In Accumulated Other Comprehensive Income [Line Items]
Reclassifications into net income	$ 112	$ (15,334)	$ (15,869)

Stock Repurchase Program - Addi

Stock Repurchase Program - Additional Information (Details) - USD ($) $ in Millions	Oct. 31, 2024	Oct. 31, 2022
Stock Repurchase Program [Abstract]
Stock repurchase program authorized amount		$ 1,500
Remaining amount available for further repurchases	$ 194.3

Stock Repurchase Program - Stoc

Stock Repurchase Program - Stock Repurchase Activities (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	12 Months Ended
	Nov. 30, 2023	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Accelerated Share Repurchases [Line Items]
Shares repurchased (in shares)		74,000	2,992,000	3,609,000
Average purchase price (in USD per share)		$ 608.91	$ 387.92	$ 314.51
Aggregate purchase price		$ 45,000	$ 1,160,724	$ 1,135,000
Reissuance of treasury stock (in shares)		2,133,000	2,670,000	2,922,000
Equity contract settlement		$ 45,000	$ (45,000)	$ 35,000
Accelerated Share Repurchase Program November 2023
Accelerated Share Repurchases [Line Items]
Equity contract settlement (in shares)	73,903
Equity contract settlement	$ 45,000

Employee Benefit Plans - Employ

Employee Benefit Plans - Employee Stock Purchase Plan - Additional Information (Details) - $ / shares shares in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022	Apr. 12, 2022
Share-Based Payment Arrangement [Abstract]
Threshold for employee stock purchases under ESPP, maximum value	85%
ESPP offering period (in years)	2 years
Increase in number of shares authorized for issuance under plan (in shares)				2
Shares issued (in shares)	0.5	0.6	0.7
Weighted average purchase price of stock purchased (in USD per share)	$ 315.24	$ 266.82	$ 195.48
Shares reserved for future issuance under the ESPP (in shares)	12.9

Employee Benefit Plans - Equity

Employee Benefit Plans - Equity Compensation Plans - Additional Information (Details)		12 Months Ended
	Apr. 10, 2024 shares	Oct. 31, 2024 shares	Oct. 31, 2023 shares	Oct. 31, 2022 shares	Oct. 31, 2021 shares	Apr. 06, 2017 shares
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate restricted stock units outstanding (in shares)		3,899,000	4,517,000	4,638,000	4,187,000
Restricted Stock Units (RSUs), Market-based | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, (in years)		2 years
Restricted Stock Units (RSUs), Market-based | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, (in years)		3 years
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate restricted stock units outstanding (in shares)		4,000	5,000	5,000	5,000
2006 Employee Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation arrangement for options contractual term (in years)		7 years
Additional reserved for future issuance under the 2006 Employee Plan (in shares)	3,400,000
Shares available for future grant (in shares)		14,516,000	13,286,000	13,111,000	13,751,000
2006 Employee Equity Incentive Plan | Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share reserve ratio		1.70
Aggregate restricted stock units outstanding (in shares)		3,900,000
2006 Employee Equity Incentive Plan | Restricted Stock Units (RSUs) | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, (in years)		3 years
2006 Employee Equity Incentive Plan | Restricted Stock Units (RSUs) | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, (in years)		4 years
2006 Employee Equity Incentive Plan | Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, (in years)		4 years
Aggregate stock options outstanding (in shares)		1,300,000
2017 Directors Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reserved for future issuance (in shares)		365,203				450,000
2017 Directors Plan | Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate stock options outstanding (in shares)		12,792
2017 Directors Plan | Stock Option | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, (in years)		3 years
2017 Directors Plan | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate restricted stock units outstanding (in shares)		3,751
Other Assumed Stock Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Assumed shares remaining outstanding (in shares)		18,000

Employee Benefit Plans - Restri

Employee Benefit Plans - Restricted Stock Units (Details) - Restricted Stock Units (RSUs) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2021
Shares
Beginning balance (in shares)	4,517	4,638	4,187
Granted (in shares)	1,620	2,083	2,402
Vested (in shares)	(1,778)	(1,839)	(1,589)
Forfeited (in shares)	(460)	(365)	(362)
Ending balance (in shares)	3,899	4,517	4,638	4,187
Weighted Average Grant Date Fair Value
Weighted Average Grant Date Fair Value, Beginning balance (in USD per share)	$ 335.26	$ 265.76	$ 193.58
Granted (in USD per share)	543.69	394.34	323.46
Vested (in USD per share)	303.23	237.19	170.36
Forfeited (in USD per share)	395.74	283.29	228.70
Weighted Average Grant Date Fair Value, Ending balance (in USD per share)	$ 429.36	$ 335.26	$ 265.76	$ 193.58
Weighted Average Remaining Contractual Life (In Years)	1 year 4 months 6 days	1 year 4 months 28 days	1 year 3 months 25 days	1 year 4 months 20 days
Aggregate Fair Value	$ 962,127	$ 706,136	$ 529,766

Employee Benefit Plans - Stock

Employee Benefit Plans - Stock Options (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2021
Weighted-Average Exercise Price
Weighted- Average Exercise Price per Share, Options exercised (in USD per share)	$ 141.83	$ 109.83	$ 86.24
Stock Option | All Stock Plans
Shares
Options outstanding, beginning balance (in shares)	1,515	2,160	3,107
Options Outstanding, Options granted (in shares)	238	294	293
Options Outstanding, Options exercised (in shares)	(429)	(849)	(1,126)
Options Outstanding, Options canceled/forfeited/expired (in shares)	(42)	(90)	(114)
Options outstanding, ending balance (in shares)	1,282	1,515	2,160	3,107
Options outstanding, vested and expected to vest (in shares)	1,282
Options Outstanding, Exercisable (in shares)	810
Weighted-Average Exercise Price
Weighted- Average Exercise Price per Share, Beginning balance (in USD per share)	$ 208.49	$ 150.37	$ 109.51
Weighted- Average Exercise Price per Share, Options granted (in USD per share)	551.41	361.64	342.86
Weighted- Average Exercise Price per Share, Options exercised (in USD per share)	141.83	109.83	86.24
Weighted- Average Exercise Price per Share, Options canceled/forfeited/expired (in USD per share)	376.97	245.86	164.46
Weighted- Average Exercise Price per Share, Ending balance (in USD per share)	288.91	$ 208.49	$ 150.37	$ 109.51
Weighted- Average Exercise Price per Share, Vested and expected to vest (in USD per share)	288.91
Weighted- Average Exercise Price per Share, Exercisable (in USD per share)	$ 197.95
Weighted Average Remaining Contractual Life, options outstanding	3 years 7 months 17 days	3 years 8 months 12 days	3 years 6 months 25 days	3 years 9 months 21 days
Weighted Average Remaining Contractual Life, options outstanding, vested and expected to vest	3 years 7 months 17 days
Weighted-Average Remaining Contractual Life , Exercisable	2 years 6 months 14 days
Aggregate Intrinsic Value, Beginning balance	$ 376,563	$ 328,120	$ 694,921
Aggregate Intrinsic Value, ending Balance	301,781	$ 376,563	$ 328,120	$ 694,921
Aggregate Intrinsic Value, vested and expected to vest	301,781
Aggregate Intrinsic Value, Exercisable	$ 259,550

Employee Benefit Plans - Rest_2

Employee Benefit Plans - Restricted Stock Units - Additional Information (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Oct. 31, 2024 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Closing stock price (in USD per share) | $ / shares	$ 518.40
Options, RSUs and restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unamortized share-based compensation expense	$ 1,300
Weighted-average period of total compensation costs to be recognized over a period in years	2 years 3 months 18 days
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unamortized share-based compensation expense	$ 111.2
Weighted-average period of total compensation costs to be recognized over a period in years	2 years

Employee Benefit Plans - Pretax

Employee Benefit Plans - Pretax Intrinsic Value of Options Exercised and Their Average Exercise Prices (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Share-Based Payment Arrangement [Abstract]
Intrinsic value	$ 185,663	$ 241,385	$ 273,524
Average exercise price per share (in USD per share)	$ 141.83	$ 109.83	$ 86.24

Employee Benefit Plans - Stoc_2

Employee Benefit Plans - Stock Options and Restricted Stock Units Under all Equity Plans (Except 2005 Director's Plan) (Details) - 2006 Employee Equity Incentive Plan shares in Thousands	12 Months Ended
	Oct. 31, 2024 shares	Oct. 31, 2023 shares	Oct. 31, 2022 shares
Shares
Available for grant, beginning balance (in shares)	13,286	13,111	13,751
Available for Grant, Additional shares reserved (in shares)	3,400	3,300	3,000
Available for grants, ending balance (in shares)	14,516	13,286	13,111
Stock Option
Shares
Available for Grant, Options granted (in shares)	(238)	(294)	(286)
Available for Grant, Options canceled/forfeited/expired (in shares)	40	89	114
Restricted Stock Units (RSUs)
Shares
Available for Grant, Restricted stock units granted (in shares)	(2,754)	(3,540)	(4,083)
Available for Grant, Restricted stock units forfeited (in shares)	782	620	615
Share reserve ratio	1.70

Employee Benefit Plans - Summar

Employee Benefit Plans - Summary of Restricted Stock Award Activities Under 2005 Directors Plan and 2017 Directors Plan (Details) - Restricted Stock - $ / shares shares in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Shares
Beginning balance (in shares)	5	5	5
Granted (in shares)	3	5	5
Vested (in shares)	(4)	(5)	(5)
Forfeited (in shares)	0	0	0
Ending balance (in shares)	4	5	5
Weighted Average Grant Date Fair Value
Weighted Average Grant Date Fair Value, Beginning balance (in USD per share)	$ 387.79	$ 310.02	$ 261.01
Granted (in USD per share)	561.23	387.79	310.02
Vested (in USD per share)	382.88	310.02	261.01
Forfeited (in USD per share)	0	0	0
Weighted Average Grant Date Fair Value, Ending balance (in USD per share)	$ 541.51	$ 387.79	$ 310.02

Employee Benefit Plans - Valuat

Employee Benefit Plans - Valuation and Expense of Stock-Based Compensation (Details)	12 Months Ended
	Oct. 31, 2024
Restricted Stock Units (RSUs), Market-based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum potential awards (as a percent)	187.50%

Employee Benefit Plans - Stoc_3

Employee Benefit Plans - Stock Option Plans and Stock Purchase Rights Granted Under ESPP (Details) - $ / shares	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Stock Option
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items]
Expected life (in years)	4 years 1 month 6 days	4 years 1 month 6 days	4 years 1 month 6 days
Risk-free interest rate, minimum	3.62%	3.80%	1.07%
Risk-free interest rate, maximum	4.61%	4.80%	4.42%
Volatility, minimum	32.09%	32.74%	32.28%
Volatility, maximum	35.42%	36.16%	37.04%
Weighted average estimated fair value (in USD per share)	$ 178.67	$ 120.33	$ 98.07
Employee Stock Purchase Plan
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items]
Risk-free interest rate, minimum	3.88%	4.85%	0.67%
Risk-free interest rate, maximum	5.27%	5.38%	3.44%
Volatility, minimum	31.40%	28.03%	34.51%
Volatility, maximum	34.39%	35.27%	38.69%
Weighted average estimated fair value (in USD per share)	$ 179.10	$ 120.82	$ 102.63
Employee Stock Purchase Plan | Minimum
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items]
Expected life (in years)	6 months	6 months	6 months
Employee Stock Purchase Plan | Maximum
Schedule of Weighted Average Assumptions for Fair Values of Stock Options[Line Items]
Expected life (in years)	2 years	2 years	2 years

Employee Benefit Plans - Schedu

Employee Benefit Plans - Schedule of Share-Based Payment Award, Restricted Stock Units, Valuation Assumptions (Details) - Restricted Stock Units (RSUs), Market-based - $ / shares	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Expected life (in years)	2 years 10 months 20 days
Risk-free interest rate	4.41%
Risk-free interest rate, minimum		4.36%	1.33%
Risk-free interest rate, maximum		4.80%	3.46%
Volatility	34.03%
Volatility, minimum		34.79%	33.01%
Volatility, maximum		42.86%	37.80%
Granted (in USD per share)	$ 600.29
Minimum
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Expected life (in years)		10 months 24 days	1 year 1 month 28 days
Granted (in USD per share)		$ 357.29	$ 280.52
Maximum
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Expected life (in years)		2 years 8 months 12 days	1 year 8 months 8 days
Granted (in USD per share)		$ 465.79	$ 412.20

Employee Benefit Plans - Stoc_4

Employee Benefit Plans - Stock Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense before taxes	$ 692,316	$ 563,292	$ 459,029
Income tax benefit	(115,271)	(90,915)	(74,271)
Stock-based compensation expense after taxes	577,045	472,377	384,758
Continuing operations
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense before taxes	657,935	513,094	421,749
Discontinued operations
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense before taxes	34,381	50,198	37,280
Cost of products
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense before taxes	66,403	49,896	43,618
Cost of maintenance and service
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense before taxes	32,189	29,572	24,146
Research and development expense
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense before taxes	359,244	282,540	233,772
Sales and marketing expense
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense before taxes	121,524	91,082	70,607
General and administrative expense
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total stock-based compensation expense before taxes	$ 78,575	$ 60,004	$ 49,606

Employee Benefit Plans - Deferr

Employee Benefit Plans - Deferred Plan Assets and Liabilities (Details) - USD ($) $ in Thousands	Oct. 31, 2024	Oct. 31, 2023
Share-Based Payment Arrangement [Abstract]
Plan assets recorded in other long-term assets	$ 386,757	$ 297,180
Plan liabilities recorded in other long-term liabilities	$ 386,757	$ 297,180

Employee Benefit Plans - Other

Employee Benefit Plans - Other Retirement Plans - Additional Information (Details)	12 Months Ended
	Oct. 31, 2024 USD ($)	Oct. 31, 2024 CAD ($)	Oct. 31, 2023 USD ($)	Oct. 31, 2022 USD ($)
Other Retirement Plans [Line Items]
Deferred percentage of annual cash base compensation	50%	50%
Deferred percentage of variable cash compensation	100%	100%
Other Retirement Plans, Defined, Contribution Plan
Other Retirement Plans [Line Items]
Employer contribution	$ 51,300,000		$ 50,800,000	$ 44,000,000
Maximum pretax annual company contribution match per employee	$ 3,000	$ 4,000

Employee Benefit Plans - Summ_2

Employee Benefit Plans - Summary of Impact of Deferred Plan (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Share-Based Payment Arrangement [Abstract]
Increase (reduction) to cost of revenue and operating expense	$ 85,446	$ 20,196	$ (67,516)
Interest and other income (expense), net	85,446	20,196	(67,516)
Net increase (decrease) to net income	$ 0	$ 0	$ 0

Net Income Per Share (Details)

Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Numerator:
Net income from continuing operations attributed to Synopsys	$ 1,441,710	$ 1,227,045	$ 970,225
Net income from discontinued operations attributed to Synopsys	821,670	2,843	14,369
Net income attributed to Synopsys	$ 2,263,380	$ 1,229,888	$ 984,594
Denominator:
Weighted average common shares for basic net income per share (shares)	153,138	152,146	153,002
Dilutive effect of common share equivalents from equity-based compensation (shares)	2,806	3,049	3,483
Weighted average common shares for diluted net income per share (shares)	155,944	155,195	156,485
Net income per share attributed to Synopsys - basic:
Continuing operations (in USD per share)	$ 9.41	$ 8.06	$ 6.34
Discontinued operations (in USD per share)	5.37	0.02	0.10
Basic net income per share (in USD per share)	14.78	8.08	6.44
Net income per share attributed to Synopsys - diluted:
Continuing operations (in USD per share)	9.25	7.91	6.20
Discontinued operations (in USD per share)	5.26	0.01	0.09
Diluted net income per share (in USD per share)	$ 14.51	$ 7.92	$ 6.29
Anti-dilutive employee stock-based awards excluded (shares)	229	475	281

Income Taxes - Domestic and For

Income Taxes - Domestic and Foreign Components of Total Income Before Provision for Income Tax (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Income Tax Disclosure [Abstract]
United States	$ 1,333,132	$ 1,144,410	$ 1,028,829
Foreign	180,726	161,060	74,623
Income before income taxes	$ 1,513,858	$ 1,305,470	$ 1,103,452

Income Taxes - Components of Pr

Income Taxes - Components of Provision (Benefit) for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Current:
Federal	$ 345,859	$ 252,186	$ 109,030
State	19,808	23,042	23,593
Foreign	110,021	22,869	43,076
Current income tax expense (benefit), total	475,688	298,097	175,699
Deferred:
Federal	(312,677)	(191,249)	(38,901)
State	(39,164)	(219)	(1,067)
Foreign	(24,129)	(16,441)	3,654
Deferred income tax expense (benefit), total	(375,970)	(207,909)	(36,314)
Provision (benefit) for income taxes	$ 99,718	$ 90,188	$ 139,385

Income Taxes - Rate Reconciliat

Income Taxes - Rate Reconciliation Between Provision (Benefit) for Income Taxes and Taxes Computed at Statutory Federal Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Income Tax Disclosure [Abstract]
Statutory federal tax	$ 317,912	$ 274,149	$ 231,723
State tax (benefit), net of federal effect	48,393	438	(2,870)
Federal tax credits	(70,119)	(60,500)	(55,708)
Tax (benefit) on foreign earnings	3,316	(17,571)	23,709
Foreign-derived intangible income deduction	(104,835)	(80,034)	(38,816)
Tax settlements	0	(23,752)	0
Stock-based compensation	(43,419)	(39,995)	(50,469)
Changes in valuation allowance	(57,371)	29,631	19,794
Other	5,841	7,822	12,022
Provision (benefit) for income taxes	$ 99,718	$ 90,188	$ 139,385

Income Taxes - Components of De

Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Oct. 31, 2024	Oct. 31, 2023
Deferred tax assets:
Deferred revenue	$ 37,849	$ 37,641
Deferred compensation	73,869	69,824
Intangible and depreciable assets	65,489	94,299
Capitalized research and development costs	978,085	591,617
Stock-based compensation	74,934	64,326
Tax loss carryovers	37,787	36,804
Foreign tax credit carryovers	42,534	41,584
Research and other tax credit carryovers	107,643	178,416
Operating Lease Liabilities	108,235	118,679
Accruals and reserves	49,935	27,636
Gross deferred tax assets	1,576,360	1,260,826
Valuation allowance	(170,672)	(221,713)
Total deferred tax assets	1,405,688	1,039,113
Deferred tax liabilities:
Intangible assets	80,034	98,305
Operating lease Right-of-Use-Assets	84,512	94,068
Accruals and reserves	0	602
Undistributed earnings of foreign subsidiaries	8,800	8,900
Other	21,641	19,169
Total deferred tax liabilities	194,987	221,044
Net deferred tax assets	$ 1,210,701	$ 818,069

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jul. 31, 2023	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2017	May 17, 2023
Taxes [Line Items]
Decreased in valuation allowance		$ 51
Unrecognized tax benefits affecting effective tax rate		61.9	$ 64.9
Interest and penalties expense (benefit)		(1)	(10.6)	$ 0.8
The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations		1.1	$ 2.1
Foreign Tax Authority | Subsidiaries | Hungarian Tax Authority
Taxes [Line Items]
Interest and penalties expense (benefit)					$ 11
Aggregate tax assessment (refund)					$ 25	$ (39.1)
Release of unrecognized tax benefit, net of foreign tax credits	$ 23.8
Minimum
Taxes [Line Items]
Estimated potential decrease in underlying unrecognized tax benefits		0
Maximum
Taxes [Line Items]
Estimated potential decrease in underlying unrecognized tax benefits		$ 12

Income Taxes - Tax Loss and Cre

Income Taxes - Tax Loss and Credit Carryforwards Available to Offset Future Income Tax Liabilities (Details) $ in Thousands	Oct. 31, 2024 USD ($)
Federal
Net Operating Loss and Tax Credit Carryforward [Line Items]
Net operating loss carryforward	$ 69,062
Credit carryforward	6,214
Federal foreign tax credit carryforward
Net Operating Loss and Tax Credit Carryforward [Line Items]
Credit carryforward	34,217
International foreign tax credit carryforward
Net Operating Loss and Tax Credit Carryforward [Line Items]
Net operating loss carryforward	51,326
Credit carryforward	5,337
California research credit carryforward
Net Operating Loss and Tax Credit Carryforward [Line Items]
Credit carryforward	151,380
Other state research credit carryforward
Net Operating Loss and Tax Credit Carryforward [Line Items]
Credit carryforward	25,621
State net operating loss carryforward
Net Operating Loss and Tax Credit Carryforward [Line Items]
Net operating loss carryforward	$ 138,482

Income Taxes - Summary of Recon

Income Taxes - Summary of Reconciliation of Beginning and Ending Balance of Gross Unrecognized Tax Benefit (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023
Income Tax Disclosure [Abstract]
Decrease in gross unrecognized tax benefits	$ 3,000
Gross unrecognized tax benefits	61,854	$ 64,880
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Beginning balance	64,880	71,898
Increases in unrecognized tax benefits related to prior year tax positions	1,106	211
Decreases in unrecognized tax benefits related to prior year tax positions	(8,639)	(25,678)
Increases in unrecognized tax benefits related to current year tax positions	8,036	8,029
Reductions in unrecognized tax benefits due to lapse of applicable statute of limitations	(4,380)	(249)
Increases in unrecognized tax benefits acquired	161	165
Changes in unrecognized tax benefits due to foreign currency translation	690	10,504
Ending Balance	$ 61,854	$ 64,880

Interest and Other Income (Ex_3

Interest and Other Income (Expense), Net (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Nov. 30, 2023	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Other Income and Expenses [Abstract]
Interest income		$ 67,017	$ 36,674	$ 8,545
Interest expense		(35,161)	(1,178)	(1,698)
Gains (losses) on assets related to deferred compensation plan		85,446	20,196	(67,516)
Gain on sale of strategic investments	$ 55,100	55,077	0	0
Foreign currency exchange gains (losses)		6,294	(1,529)	4,694
Other, net		(20,526)	(21,932)	10,713
Total		$ 158,147	$ 32,231	$ (45,262)

Segment Disclosure - Additional

Segment Disclosure - Additional information (Details) - segment	3 Months Ended	9 Months Ended	12 Months Ended
	Jan. 31, 2024	Oct. 31, 2024	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Segment Reporting [Abstract]
Number of reportable segments	3	2
Customer Concentration Risk | Revenues | One customer
Segment Reporting Information [Line Items]
Percentage contributed by major customers			12.60%	13.50%	12.80%
Customer Concentration Risk | Accounts Receivable | One customer
Segment Reporting Information [Line Items]
Percentage contributed by major customers				12.10%

Segment Disclosure - Schedule o

Segment Disclosure - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Segment Reporting Information [Line Items]
Revenue	$ 6,127,436	$ 5,318,014	$ 4,615,714
Adjusted operating income	1,355,711	1,273,239	1,148,714
Design Automation
Segment Reporting Information [Line Items]
Revenue	4,221,122	3,775,288	3,300,173
Adjusted operating income	$ 1,631,885	$ 1,413,926	$ 1,176,101
Adjusted operating margin	39%	37%	36%
Design IP
Segment Reporting Information [Line Items]
Revenue	$ 1,906,314	$ 1,542,726	$ 1,315,541
Adjusted operating income	$ 730,174	$ 514,101	$ 403,798
Adjusted operating margin	38%	33%	31%
Operating Segments
Segment Reporting Information [Line Items]
Adjusted operating income	$ 2,362,059	$ 1,928,027	$ 1,579,899
Adjusted operating margin	39%	36%	34%

Segment Disclosure - Schedule_2

Segment Disclosure - Schedule of Segment Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Segment Reporting Information [Line Items]
Adjusted operating income	$ 1,355,711	$ 1,273,239	$ 1,148,714
Amortization of acquired intangible assets	(124,234)	(59,346)	(58,983)
Stock-based compensation expense	(692,316)	(563,292)	(459,029)
Deferred compensation plan	85,446	20,196	(67,516)
Restructuring charges	0	(53,091)	(11,221)
Continuing operations
Segment Reporting Information [Line Items]
Stock-based compensation expense	(657,935)	(513,094)	(421,749)
Operating Segments
Segment Reporting Information [Line Items]
Adjusted operating income	2,362,059	1,928,027	1,579,899
Reconciling items: | Continuing operations
Segment Reporting Information [Line Items]
Amortization of acquired intangible assets	(124,234)	(54,576)	(56,311)
Stock-based compensation expense	(657,935)	(513,094)	(421,749)
Deferred compensation plan	(85,446)	(20,196)	67,516
Restructuring charges	0	(53,091)	(11,221)
Acquisition/divestiture related items	$ (138,733)	$ (13,831)	$ (9,420)

Segment Disclosure - Revenues R

Segment Disclosure - Revenues Related to Operations by Geographic Areas (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 6,127,436	$ 5,318,014	$ 4,615,714
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	2,739,756	2,462,009	2,094,470
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	614,584	514,780	430,369
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	989,524	855,023	774,265
Korea
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	773,018	625,502	523,501
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 1,010,554	$ 860,700	$ 793,109

Segment Disclosure - Property a

Segment Disclosure - Property and Equipment By Geographic Areas (Details) - USD ($) $ in Thousands	Oct. 31, 2024	Oct. 31, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	$ 563,006	$ 549,837
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	335,306	334,272
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	$ 227,700	$ 215,565

Restructuring Charges (Details)

Restructuring Charges (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0	$ 53,091	$ 11,221
2023 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, cost incurred to date		77,000
Restructuring reserve, current	800
Restructuring reserve, noncurrent	3,800
2023 Restructuring Plan | Discontinued operations
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, cost incurred to date		23,900
Payments for restructuring charges	500	23,400
Restructuring reserve, current		500
Restructuring charges		23,900
2023 Restructuring Plan | Continuing operations
Restructuring Cost and Reserve [Line Items]
Payments for restructuring charges	$ 3,600	44,900
Restructuring reserve, current		3,700
Restructuring reserve, noncurrent		4,500
Restructuring charges		$ 53,100
2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring reserve			0
2021 Restructuring Plan | Discontinued operations
Restructuring Cost and Reserve [Line Items]
Payments for restructuring charges			2,200
Restructuring charges			900
2021 Restructuring Plan | Continuing operations
Restructuring Cost and Reserve [Line Items]
Payments for restructuring charges			24,100
Restructuring charges			$ 11,200