Perpetual Industries Inc. - Statements of Operations (USD $)	3 Months Ended	9 Months Ended
Apr. 30, 2015	Apr. 30, 2014	Apr. 30, 2015	Apr. 30, 2014
Income Statement
Revenues	$ 27,553us-gaap_Revenues		$ 27,533us-gaap_Revenues	$ 157,211us-gaap_Revenues
Operating Expenses
Related party expenses	(80,220)fil_RelatedPartyExpenses	(86,258)fil_RelatedPartyExpenses	(357,789)fil_RelatedPartyExpenses	(254,452)fil_RelatedPartyExpenses
Other operating expenses	(89,802)us-gaap_OtherCostAndExpenseOperating	(56,830)us-gaap_OtherCostAndExpenseOperating	(767,147)us-gaap_OtherCostAndExpenseOperating	(243,456)us-gaap_OtherCostAndExpenseOperating
Total operating expenses	(170,022)us-gaap_OperatingExpenses	(143,088)us-gaap_OperatingExpenses	(1,124,936)us-gaap_OperatingExpenses	(497,908)us-gaap_OperatingExpenses
Operating loss	(142,469)us-gaap_OperatingIncomeLoss	(143,088)us-gaap_OperatingIncomeLoss	(1,097,383)us-gaap_OperatingIncomeLoss	(340,697)us-gaap_OperatingIncomeLoss
Other Income (Expense)
Interest income, related party	10,775us-gaap_InterestIncomeRelatedParty	(5,177)us-gaap_InterestIncomeRelatedParty	5,186us-gaap_InterestIncomeRelatedParty	10,721us-gaap_InterestIncomeRelatedParty
Interest expense, related party	(17,192)us-gaap_InterestExpenseRelatedParty	(13,445)us-gaap_InterestExpenseRelatedParty	(65,288)us-gaap_InterestExpenseRelatedParty	(38,290)us-gaap_InterestExpenseRelatedParty
Interest expense, non-related party	(22,173)us-gaap_InterestExpense	(1,445)us-gaap_InterestExpense	(38,642)us-gaap_InterestExpense	(2,627)us-gaap_InterestExpense
Stock option issuance expense			(678,303)fil_StockOptionIssuanceExpense
Warrant issuance expense				(184,408)
Other	(5,176)us-gaap_OtherGeneralExpense	(3,572)us-gaap_OtherGeneralExpense	(5,839)us-gaap_OtherGeneralExpense	2,896us-gaap_OtherGeneralExpense
Net Loss	$ (176,235)us-gaap_NetIncomeLoss	$ (166,727)us-gaap_NetIncomeLoss	$ (1,880,269)us-gaap_NetIncomeLoss	$ (552,405)us-gaap_NetIncomeLoss
Basic and Diluted Loss Per Share	$ (0.01)us-gaap_EarningsPerShareBasicAndDiluted	$ (0.01)us-gaap_EarningsPerShareBasicAndDiluted	$ (0.06)us-gaap_EarningsPerShareBasicAndDiluted	$ (0.02)us-gaap_EarningsPerShareBasicAndDiluted
Basic and Diluted Weighted Average Common Shares Outstanding	34,266,000	32,470,000	33,977,104	32,470,000

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