Estimated Useful Lives (Detail)		9 Months Ended
	May 02, 2018	Sep. 30, 2018
Customer Lists and Contract Backlog
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	12 years
Minimum | Developed Software and Core Technologies
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	9 years	3 years
Minimum | Customer Lists and Contract Backlog
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life		5 years
Minimum | Trade names
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	4 years	2 years
Maximum | Developed Software and Core Technologies
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	10 years	11 years
Maximum | Customer Lists and Contract Backlog
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life		15 years
Maximum | Trade names
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life	10 years	10 years