CONDENSED 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
Balance (in shares) at Oct. 31, 2022			152,375
Beginning 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	271,242	271,536			271,536			(294)
Other comprehensive income (loss), net of tax effects	$ 91,944	91,944					91,944
Purchases of treasury stock (in shares)	(806)		(806)
Purchases of treasury stock	$ (260,724)	(260,724)	$ (8)	8		(260,724)
Equity forward contract, net	$ (45,000)	(45,000)		(45,000)
Common stock issued, net of shares withheld for employee taxes (in shares)	811		811
Common stock issued, net of shares withheld for employee taxes	$ (69,513)	(69,513)	$ 8	(282,020)		212,499
Stock-based compensation	134,227	132,786		132,786				1,441
Balance (in shares) at Jan. 31, 2023			152,380
Ending balance at Jan. 31, 2023	$ 5,642,702	5,636,754	$ 1,524	1,292,900	5,805,843	(1,321,180)	(142,333)	5,948
Balance (in shares) at Oct. 31, 2023	152,053		152,053
Beginning 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	448,468	449,112			449,112			(644)
Other comprehensive income (loss), net of tax effects	$ 33,190	33,190					33,190
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)	557		557
Common stock issued, net of shares withheld for employee taxes	$ (137,201)	(137,201)	$ 5	(318,516)		181,310
Stock-based compensation	180,652	179,338		179,338				1,314
Adjustments to redeemable non-controlling interest	(2,261)	(2,261)			(2,261)
Recognition of non-controlling interest upon issuance of subsidiary stock	$ (532)	1,498		1,498				(2,030)
Balance (in shares) at Jan. 31, 2024	152,536		152,536
Ending balance at Jan. 31, 2024	$ 6,675,574	$ 6,670,984	$ 1,525	$ 1,183,473	$ 7,188,550	$ (1,539,340)	$ (163,224)	$ 4,590