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Unaudited Condensed Consolidated Statements of Stockholders' Equity Statement - USD ($) shares in Thousands, $ in Thousands | Total | Common Stock | Capital in Excess of Par Value | Retained Earnings | Treasury Stock | Accumulated Other Comprehensive Income (Loss) | Total Synopsys Stockholders’ Equity | Non-controlling Interest
--- | --- | --- | --- | --- | --- | --- | --- | ---
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Cumulative effect adjustment | Accounting Standards Update 2018-02 |  | $ (293) |  |  | $ (293) |  |  | $ (293) |
Balance (in shares) at Oct. 31, 2017 |  |  | 150,445 |  |  |  |  |  |
Beginning balance at Oct. 31, 2017 |  | 3,279,724 | $ 1,505 | $ 1,622,429 | 2,143,873 | $ (426,208) | $ (65,979) | 3,275,620 | $ 4,104
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Net income |  | 178,190 |  |  |  |  |  | 178,190 |
Other comprehensive income (loss), net of tax effects |  | $ (28,674) |  |  |  |  | (28,674) | (28,674) |
Purchases of treasury stock (in shares) |  | (4,411) | 4,412 |  |  |  |  |  |
Purchases of treasury stock, value |  | $ (387,000) | $ 44 | (44) |  | 387,000 |  | (387,000) |
Equity forward contract |  | $ (13,000) |  | (13,000) |  |  |  | (13,000) |
Common stock Issued, net of shares withheld for employee taxes (in shares) |  | 2,527 | 2,523 |  |  |  |  |  |
Common stock issued, net of shares withheld for employee taxes |  | $ 31,597 | $ 25 | (119,879) | (25,224) | 176,675 |  | 31,597 |
Stock-based compensation |  | 101,699 |  | 101,699 |  |  |  | 101,699 |
Non-controlling interest in an equity investment |  | 1,759 |  |  |  |  |  | 0 | 1,759
Balance (in shares) at Jul. 31, 2018 |  |  | 148,556 |  |  |  |  |  |
Ending balance at Jul. 31, 2018 |  | 3,164,002 | $ 1,486 | 1,591,293 | 2,296,546 | (636,533) | (94,653) | 3,158,139 | 5,863
Balance (in shares) at Apr. 30, 2018 |  |  | 148,961 |  |  |  |  |  |
Beginning balance at Apr. 30, 2018 |  | 3,260,397 | $ 1,490 | 1,678,921 | 2,223,287 | (585,016) | (62,389) | 3,256,293 | 4,104
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Net income |  | 79,409 |  |  | 79,409 |  |  | 79,409 |
Other comprehensive income (loss), net of tax effects |  | $ (32,264) |  |  |  |  | (32,264) | (32,264) |
Purchases of treasury stock (in shares) |  | (1,509) | 1,509 |  |  |  |  |  |
Purchases of treasury stock, value |  | $ (132,000) | $ 15 | (15) |  | 132,000 |  | (132,000) |
Equity forward contract |  | $ (33,000) |  | (33,000) |  |  |  | (33,000) |
Common stock Issued, net of shares withheld for employee taxes (in shares) |  | 1,107 | 1,104 |  |  |  |  |  |
Common stock issued, net of shares withheld for employee taxes |  | $ (17,236) | $ 11 | (91,580) | (6,150) | 80,483 |  | (17,236) |
Stock-based compensation |  | 36,937 |  | 36,937 |  |  |  | 36,937 |
Non-controlling interest in an equity investment |  | 1,759 |  |  |  |  |  | 0 | 1,759
Balance (in shares) at Jul. 31, 2018 |  |  | 148,556 |  |  |  |  |  |
Ending balance at Jul. 31, 2018 |  | 3,164,002 | $ 1,486 | 1,591,293 | 2,296,546 | (636,533) | (94,653) | 3,158,139 | 5,863
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Cumulative effect adjustment | Accounting Standards Update 2014-09 | [1] | 257,594 |  |  | 257,594 |  |  | 257,594 |
Cumulative effect adjustment | Accounting Standards Update 2016-16 | [2] | (130,544) |  |  | (130,544) |  |  | (130,544) |
Balance (in shares) at Oct. 31, 2018 |  |  | 149,265 |  |  |  |  |  |
Beginning balance at Oct. 31, 2018 |  | 3,485,015 | $ 1,493 | 1,644,830 | 2,543,688 | (597,682) | (113,177) | 3,479,152 | 5,863
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Net income |  | 371,653 |  |  | 371,653 |  |  | 371,653 |
Other comprehensive income (loss), net of tax effects |  | $ 16,524 |  |  |  |  | 16,524 | 16,524 |
Purchases of treasury stock (in shares) |  | (1,901) | 1,901 |  |  |  |  |  |
Purchases of treasury stock, value |  | $ (209,185) | $ 19 | (19) |  | 209,185 |  | (209,185) |
Equity forward contract |  | $ (20,000) |  | (20,000) |  |  |  | (20,000) |
Common stock Issued, net of shares withheld for employee taxes (in shares) |  | 3,009 | 3,009 |  |  |  |  |  |
Common stock issued, net of shares withheld for employee taxes |  | $ 54,991 | $ 30 | (140,841) | (38,961) | 234,763 |  | 54,991 |
Stock-based compensation |  | 113,621 |  | 113,621 |  |  |  | 113,621 |
Balance (in shares) at Jul. 31, 2019 |  |  | 150,373 |  |  |  |  |  |
Ending balance at Jul. 31, 2019 |  | 3,939,669 | $ 1,504 | 1,597,629 | 3,003,430 | (572,104) | (96,653) | 3,933,806 | 5,863
Balance (in shares) at Apr. 30, 2019 |  |  | 149,982 |  |  |  |  |  |
Beginning balance at Apr. 30, 2019 |  | 3,915,435 | $ 1,500 | 1,659,484 | 2,912,811 | (567,503) | (96,720) | 3,909,572 | 5,863
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Net income |  | 99,929 |  |  | 99,929 |  |  | 99,929 |
Other comprehensive income (loss), net of tax effects |  | $ 67 |  |  |  |  | 67 | 67 |
Purchases of treasury stock (in shares) |  | (775) | 775 |  |  |  |  |  |
Purchases of treasury stock, value |  | $ (100,000) | $ 8 | (8) |  | 100,000 |  | (100,000) |
Common stock Issued, net of shares withheld for employee taxes (in shares) |  | 1,166 | 1,166 |  |  |  |  |  |
Common stock issued, net of shares withheld for employee taxes |  | $ (15,209) | $ 12 | (101,310) | (9,310) | 95,399 |  | (15,209) |
Stock-based compensation |  | 39,447 |  | 39,447 |  |  |  | 39,447 |
Balance (in shares) at Jul. 31, 2019 |  |  | 150,373 |  |  |  |  |  |
Ending balance at Jul. 31, 2019 |  | $ 3,939,669 | $ 1,504 | $ 1,597,629 | $ 3,003,430 | $ (572,104) | $ (96,653) | $ 3,933,806 | $ 5,863
[1] | See Note 2. Summary of Significant Accounting Policies for additional information on the retained earnings adjustment due to adoption of Accounting Standards Codification (ASC) 606 and ASC 340.
[2] | See Note 14. Taxes for additional information on the retained earnings adjustment due to adoption of Accounting Standard Update (ASU) 2016-16.

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