Valuation Assumptions and Weighted-Average Useful Life (Details)		12 Months Ended
	May 02, 2018	Dec. 31, 2019	Nov. 01, 2019	Feb. 01, 2019
Developed Software and Core Technologies
Finite-lived intangible asset, useful life		10 years
Trade Names
Finite-lived intangible asset, useful life		10 years
Customer Lists
Finite-lived intangible asset, useful life		15 years
Livermore Software Technology Corporation | Developed Software and Core Technologies
Royalty Rate			50.00%
Discount Rate			10.00%
Livermore Software Technology Corporation | Trade Names
Royalty Rate			2.00%
Discount Rate			10.00%
Livermore Software Technology Corporation | Customer Lists
Discount Rate			11.00%
Attrition Rate			10.00%
Granta Design | Developed Software and Core Technologies
Discount Rate				12.50%
Granta Design | Trade Names
Royalty Rate				2.00%
Discount Rate				14.00%
Granta Design | Customer Lists
Discount Rate				12.50%
Attrition Rate				10.00%
Granta Design | Minimum | Developed Software and Core Technologies
Royalty Rate				8.00%
Granta Design | Maximum | Developed Software and Core Technologies
Royalty Rate				10.00%
OPTIS | Developed Software and Core Technologies
Finite-lived intangible asset, useful life	10 years
OPTIS | Trade Names
Finite-lived intangible asset, useful life	9 years
OPTIS | Customer Lists
Finite-lived intangible asset, useful life	12 years