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Income Taxes - Additional Information (Details) - USD ($) $ in Millions	4 Months Ended	11 Months Ended
	Apr. 30, 2018	Dec. 31, 2017	Feb. 01, 2018
Income Tax Disclosure [Line Items]
Federal corporate tax rate	21.00%	34.00%
Deferred revenue	$ 286.9
Accounting Standards Update 2014-09 | Effect of Adoption of ASU Topic 606 | Revenue Recognition
Income Tax Disclosure [Line Items]
Deferred revenue			$ (9.8)
Accounting Standards Update 2014-09 | Effect of Adoption of ASU Topic 606 | Incremental Costs of Obtaining a Contract
Income Tax Disclosure [Line Items]
Deferred commission			$ 29.4

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