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ACQUISITIONS (Details) - Acquistion details shares in Thousands | 12 Months Ended |  |  |  |  |  |  |
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Dec. 31, 2024 USD ($) shares | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) acquisition | May 30, 2024 USD ($) | Jan. 08, 2024 USD ($) | Oct. 02, 2023 USD ($) | Sep. 07, 2023 USD ($) | May 04, 2023 USD ($) | Aug. 31, 2022 USD ($) | Jul. 14, 2022 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Cash consideration to acquire businesses, net of cash acquired | $ 737,574,000 | $ 198,351,000 | $ 613,785,000 |  |  |  |  |  |  |
Goodwill | 2,378,671,000 | 1,535,845,000 | 1,374,268,000 |  |  |  |  |  |  |
BETA CAE |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Cash acquired |  |  |  | $ 91,300,000 |  |  |  |  |  |
Business Combination, Consideration Transferred | 1,140,000,000 |  |  |  |  |  |  |  |  |
Cash consideration to acquire businesses, net of cash acquired | $ 638,200,000 |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Acquisitions | shares | 1,740 |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable | $ 501,800,000 |  |  |  |  |  |  |  |  |
Business Combination, Separately Recognized Transactions, Assets Recognized |  |  |  | 55,800,000 |  |  |  |  |  |
Current assets |  |  |  | 118,676,000 |  |  |  |  |  |
Goodwill |  |  |  | 822,129,000 |  |  |  |  |  |
Acquired intangibles |  |  |  | 345,000,000 |  |  |  |  |  |
Other long-term assets |  |  |  | 18,198,000 |  |  |  |  |  |
Total assets acquired |  |  |  | 1,304,003,000 |  |  |  |  |  |
Current liabilities |  |  |  | 36,465,000 |  |  |  |  |  |
Long-term liabilities |  |  |  | 36,250,000 |  |  |  |  |  |
Total liabilities assumed |  |  |  | 72,715,000 |  |  |  |  |  |
Total purchase consideration |  |  |  | $ 1,231,288,000 |  |  |  |  |  |
Finite-lived Intangible Assets Acquired | $ 345,000,000 |  |  |  |  |  |  |  |  |
Acquired definite-lived intangible assets, weighted average useful life | 11 years |  |  |  |  |  |  |  |  |
BETA CAE | Existing Technology [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Finite-lived Intangible Assets Acquired | $ 140,000,000 |  |  |  |  |  |  |  |  |
Acquired definite-lived intangible assets, weighted average useful life | 6 years |  |  |  |  |  |  |  |  |
BETA CAE | Agreements and Relationship [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Finite-lived Intangible Assets Acquired | $ 190,000,000 |  |  |  |  |  |  |  |  |
Acquired definite-lived intangible assets, weighted average useful life | 15 years |  |  |  |  |  |  |  |  |
BETA CAE | Tradename Trademark and Patents [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Finite-lived Intangible Assets Acquired | $ 15,000,000 |  |  |  |  |  |  |  |  |
Acquired definite-lived intangible assets, weighted average useful life | 7 years |  |  |  |  |  |  |  |  |
Invecas |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Cash acquired |  |  |  |  | $ 23,800,000 |  |  |  |  |
Cash consideration to acquire businesses, net of cash acquired | $ 71,200,000 |  |  |  |  |  |  |  |  |
Current assets |  |  |  |  | 50,608,000 |  |  |  |  |
Goodwill |  |  |  |  | 42,209,000 |  |  |  |  |
Acquired intangibles |  |  |  |  | 15,500,000 |  |  |  |  |
Other long-term assets |  |  |  |  | 7,414,000 |  |  |  |  |
Total assets acquired |  |  |  |  | 115,731,000 |  |  |  |  |
Current liabilities |  |  |  |  | 17,114,000 |  |  |  |  |
Long-term liabilities |  |  |  |  | 3,647,000 |  |  |  |  |
Total liabilities assumed |  |  |  |  | 20,761,000 |  |  |  |  |
Total purchase consideration |  |  |  |  | 94,970,000 |  |  |  |  |
Acquired definite-lived intangible assets, weighted average useful life | 6 years 9 months 18 days |  |  |  |  |  |  |  |  |
Invecas | Agreements and Relationship [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Acquired intangibles assets with finite lives |  |  |  |  | 15,000,000.0 |  |  |  |  |
Invecas | Tradename Trademark and Patents [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Acquired intangibles assets with finite lives |  |  |  |  | $ 500,000 |  |  |  |  |
Other business combinations |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Cash consideration to acquire businesses, net of cash acquired | $ 28,300,000 |  |  |  |  |  |  |  |  |
Goodwill | 25,200,000 |  |  |  |  |  |  |  |  |
Acquired intangibles | $ 5,500,000 |  |  |  |  |  |  |  |  |
Acquired definite-lived intangible assets, weighted average useful life | 4 years 10 months 24 days |  |  |  |  |  |  |  |  |
IP Business from Rambus |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Cash consideration to acquire businesses, net of cash acquired |  | 108,600,000 |  |  |  |  |  |  |  |
Current assets |  |  |  |  |  |  | $ 1,460,000 |  |  |
Goodwill |  |  |  |  |  |  | 80,999,000 |  |  |
Acquired intangibles |  |  |  |  |  |  | 26,000,000 |  |  |
Other long-term assets |  |  |  |  |  |  | 2,798,000 |  |  |
Total assets acquired |  |  |  |  |  |  | 111,257,000 |  |  |
Current liabilities |  |  |  |  |  |  | 2,531,000 |  |  |
Long-term liabilities |  |  |  |  |  |  | 142,000 |  |  |
Total liabilities assumed |  |  |  |  |  |  | 2,673,000 |  |  |
Total purchase consideration |  |  |  |  |  |  | $ 108,584,000 |  |  |
Finite-lived Intangible Assets Acquired |  | $ 26,000,000 |  |  |  |  |  |  |  |
Acquired definite-lived intangible assets, weighted average useful life |  | 5 years 8 months 12 days |  |  |  |  |  |  |  |
IP Business from Rambus | Existing Technology [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Finite-lived Intangible Assets Acquired |  | $ 16,700,000 |  |  |  |  |  |  |  |
Acquired definite-lived intangible assets, weighted average useful life |  | 5 years |  |  |  |  |  |  |  |
IP Business from Rambus | Agreements and Relationship [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Finite-lived Intangible Assets Acquired |  | $ 9,300,000 |  |  |  |  |  |  |  |
Acquired definite-lived intangible assets, weighted average useful life |  | 7 years |  |  |  |  |  |  |  |
Pulsic. Ltd. |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Cash acquired |  |  |  |  |  |  |  | $ 3,800,000 |  |
Cash consideration to acquire businesses, net of cash acquired |  | $ 56,100,000 |  |  |  |  |  |  |  |
Current assets |  |  |  |  |  |  |  | 4,369,000 |  |
Goodwill |  |  |  |  |  |  |  | 47,448,000 |  |
Acquired intangibles |  |  |  |  |  |  |  | 12,400,000 |  |
Other long-term assets |  |  |  |  |  |  |  | 89,000 |  |
Total assets acquired |  |  |  |  |  |  |  | 64,306,000 |  |
Current liabilities |  |  |  |  |  |  |  | 1,553,000 |  |
Long-term liabilities |  |  |  |  |  |  |  | 2,885,000 |  |
Total liabilities assumed |  |  |  |  |  |  |  | 4,438,000 |  |
Total purchase consideration |  |  |  |  |  |  |  | $ 59,868,000 |  |
Finite-lived Intangible Assets Acquired |  | $ 12,400,000 |  |  |  |  |  |  |  |
Acquired definite-lived intangible assets, weighted average useful life |  | 6 years 9 months 18 days |  |  |  |  |  |  |  |
Pulsic. Ltd. | Existing Technology [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Finite-lived Intangible Assets Acquired |  | $ 8,000,000 |  |  |  |  |  |  |  |
Acquired definite-lived intangible assets, weighted average useful life |  | 6 years 2 months 12 days |  |  |  |  |  |  |  |
Pulsic. Ltd. | Agreements and Relationship [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Finite-lived Intangible Assets Acquired |  | $ 4,100,000 |  |  |  |  |  |  |  |
Acquired definite-lived intangible assets, weighted average useful life |  | 8 years |  |  |  |  |  |  |  |
Pulsic. Ltd. | Tradename Trademark and Patents [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Finite-lived Intangible Assets Acquired |  | $ 300,000 |  |  |  |  |  |  |  |
Acquired definite-lived intangible assets, weighted average useful life |  | 6 years |  |  |  |  |  |  |  |
Intrinsix |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Cash acquired |  |  |  |  |  | $ 500,000 |  |  |  |
Cash consideration to acquire businesses, net of cash acquired |  | $ 34,600,000 |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  | 31,600,000 |  |  |  |
Total assets acquired |  |  |  |  |  | $ 900,000 |  |  |  |
Finite-lived Intangible Assets Acquired |  | $ 2,600,000 |  |  |  |  |  |  |  |
Acquired definite-lived intangible assets, weighted average useful life |  | 5 years |  |  |  |  |  |  |  |
OpenEye Scientific Software, Inc. |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Cash acquired |  |  |  |  |  |  |  |  | $ 13,200,000 |
Cash consideration to acquire businesses, net of cash acquired |  |  | 461,300,000 |  |  |  |  |  |  |
Current assets |  |  |  |  |  |  |  |  | 24,890,000 |
Goodwill |  |  |  |  |  |  |  |  | 359,580,000 |
Acquired intangibles |  |  |  |  |  |  |  |  | 117,400,000 |
Other long-term assets |  |  |  |  |  |  |  |  | 6,542,000 |
Total assets acquired |  |  |  |  |  |  |  |  | 508,412,000 |
Current liabilities |  |  |  |  |  |  |  |  | 15,489,000 |
Long-term liabilities |  |  |  |  |  |  |  |  | 18,456,000 |
Total liabilities assumed |  |  |  |  |  |  |  |  | 33,945,000 |
Total purchase consideration |  |  |  |  |  |  |  |  | $ 474,467,000 |
Finite-lived Intangible Assets Acquired |  |  | $ 117,400,000 |  |  |  |  |  |  |
Acquired definite-lived intangible assets, weighted average useful life |  |  | 9 years 9 months 18 days |  |  |  |  |  |  |
OpenEye Scientific Software, Inc. | Existing Technology [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Finite-lived Intangible Assets Acquired |  |  | $ 53,900,000 |  |  |  |  |  |  |
Acquired definite-lived intangible assets, weighted average useful life |  |  | 7 years |  |  |  |  |  |  |
OpenEye Scientific Software, Inc. | Agreements and Relationship [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Finite-lived Intangible Assets Acquired |  |  | $ 61,400,000 |  |  |  |  |  |  |
Acquired definite-lived intangible assets, weighted average useful life |  |  | 12 years 3 months 18 days |  |  |  |  |  |  |
OpenEye Scientific Software, Inc. | Tradename Trademark and Patents [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Finite-lived Intangible Assets Acquired |  |  | $ 2,100,000 |  |  |  |  |  |  |
Acquired definite-lived intangible assets, weighted average useful life |  |  | 7 years |  |  |  |  |  |  |
FFG Holdings Limited ("Future Facilities") |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Cash acquired |  |  |  |  |  |  |  |  |  | $ 2,800,000
Cash consideration to acquire businesses, net of cash acquired |  |  | $ 100,100,000 |  |  |  |  |  |  |
Current assets |  |  |  |  |  |  |  |  |  | 7,992,000
Goodwill |  |  |  |  |  |  |  |  |  | 67,219,000
Acquired intangibles |  |  |  |  |  |  |  |  |  | 38,100,000
Other long-term assets |  |  |  |  |  |  |  |  |  | 2,708,000
Total assets acquired |  |  |  |  |  |  |  |  |  | 116,019,000
Current liabilities |  |  |  |  |  |  |  |  |  | 4,952,000
Long-term liabilities |  |  |  |  |  |  |  |  |  | 8,167,000
Total liabilities assumed |  |  |  |  |  |  |  |  |  | 13,119,000
Total purchase consideration |  |  |  |  |  |  |  |  |  | $ 102,900,000
Finite-lived Intangible Assets Acquired |  |  | $ 38,100,000 |  |  |  |  |  |  |
Acquired definite-lived intangible assets, weighted average useful life |  |  | 7 years 3 months 18 days |  |  |  |  |  |  |
FFG Holdings Limited ("Future Facilities") | Existing Technology [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Finite-lived Intangible Assets Acquired |  |  | $ 20,900,000 |  |  |  |  |  |  |
Acquired definite-lived intangible assets, weighted average useful life |  |  | 6 years |  |  |  |  |  |  |
FFG Holdings Limited ("Future Facilities") | Agreements and Relationship [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Finite-lived Intangible Assets Acquired |  |  | $ 15,600,000 |  |  |  |  |  |  |
Acquired definite-lived intangible assets, weighted average useful life |  |  | 9 years |  |  |  |  |  |  |
FFG Holdings Limited ("Future Facilities") | Tradename Trademark and Patents [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Finite-lived Intangible Assets Acquired |  |  | $ 1,600,000 |  |  |  |  |  |  |
Acquired definite-lived intangible assets, weighted average useful life |  |  | 8 years |  |  |  |  |  |  |
2022 Other business combination |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Cash consideration to acquire businesses, net of cash acquired |  |  | $ 53,600,000 |  |  |  |  |  |  |
Goodwill |  |  | 29,500,000 |  |  |  |  |  |  |
Acquired intangibles |  |  | $ 23,100,000 |  |  |  |  |  |  |
Acquired definite-lived intangible assets, weighted average useful life |  |  | 6 years 10 months 24 days |  |  |  |  |  |  |
Number of businesses acquired | acquisition |  |  | 3 |  |  |  |  |  |  |
Goodwill, expected to be tax deductible |  |  | $ 27,800,000 |  |  |  |  |  |  |
2022 Other business combination | Existing Technology [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Acquired intangibles assets with finite lives |  |  | 13,100,000 |  |  |  |  |  |  |
2022 Other business combination | Agreements and Relationship [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Acquired intangibles assets with finite lives |  |  | 3,100,000 |  |  |  |  |  |  |
2022 Other business combination | Tradename Trademark and Patents [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Acquired intangibles assets with finite lives |  |  | 100,000 |  |  |  |  |  |  |
2022 Other business combination | In-process technology |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Acquired intangible assets with infinite lives |  |  | $ 6,800,000 |  |  |  |  |  |  |

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