Warrants (Details)	6 Months Ended
	Jan. 31, 2021 $ / shares shares
Warrants and Rights Note Disclosure [Abstract]
Warrants, Outstanding | shares	2,240,000
Warrants, Granted | shares	107,701,179
Warrants, Exercised | shares
Warrants, Forfeited and cancelled | shares	(105,000)
Warrants, Outstanding | shares	109,836,179
Warrants, Exercisable | shares	82,610,884
Weighted average exercise price, Outstanding | $ / shares	$ 0.33
Weighted average exercise price, Granted | $ / shares	0.01
Weighted average exercise price, Exercised | $ / shares
Weighted average exercise price, Forfeited and cancelled | $ / shares	0.50
Weighted average exercise price, Outstanding | $ / shares	0.02
Weighted average exercise price, Exercisable | $ / shares	$ 0.21
Weighted average remaining contractual term (years), Outstanding	1 year 7 months 10 days
Weighted average remaining contractual term (years), Granted	9 years 9 months 18 days
Weighted average remaining contractual term (years), Outstanding	9 years 7 months 17 days
Weighted average remaining contractual term (years), Exercisable	9 years 10 months 10 days