Derivative Liabilities - Summary of (Loss) Gain on Derivative Liability (Details)	3 Months Ended
Jul. 31, 2018 USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Day-one loss due to derivative liabilities on convertible notes payable and warrants	$ 634,536
Gain on change in fair value of the derivative	(608,699)
Loss on change in fair value of derivative liabilities	$ 25,837

Day-one loss due to derivative liabilities on convertible notes payable and warrants.

No definition available.

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- Definition

Amount of increase in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959

+ Details

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- References

No definition available.

+ Details

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- Definition

Amount of decrease in the fair value of derivatives recognized in the income statement.

+ References

+ Details

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