Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I)
-URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319

Name:	us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Income Taxes - Additional Information (Details) - USD ($) $ in Millions	7 Months Ended	11 Months Ended
	Jul. 31, 2018	Dec. 31, 2017	Feb. 01, 2018
Income Tax Disclosure [Line Items]
Federal corporate tax rate	21.00%	34.00%
Deferred revenue	$ 301.5
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