2.4.0.8000200 - Disclosure - 1. Basis of Presentation and Summary of Significant Accounting Policies: Mineral Properties and Exploration Expenses (Policies)truefalsefalse1false falsefalseY13Q2http://www.sec.gov/CIK0001399306duration2013-04-01T00:00:002013-06-30T00:00:001true 1us-gaap_PolicyTextBlockAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Policies2false 2us-gaap_ExploratoryDrillingCostsCapitalizationAndImpairmentPolicyus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Mineral Properties and Exploration Expenses   Mineral properties purchased are capitalized and carried at cost. Exploration and development cost are charged to operations as incurred until such time that proven or probable ore reserves are discovered. From that time forward, the Company will capitalize all costs to the extent that future cash flow from reserves equals or exceeds the cost deferred. The deferred cost will be amortized using the unit-of-production method when a property reaches commercial production.  falsefalsefalsenonnum:textBlockItemTypenaDisclosure of accounting policy for capitalization of exploratory drilling costs, including the criteria management applies in evaluating whether costs incurred meet the criteria for initial capitalization, continued capitalization, impairment, and how often such evaluations are made.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 360 -URI http://asc.fasb.org/subtopic&trid=2145654 false0Mineral Properties and Exploration Expensesfalse1. Basis of Presentation and Summary of Significant Accounting Policies: Mineral Properties and Exploration Expenses (Policies)UnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.gridpetroleum.com/20130630/role/idr_Disclosure1BasisOfPresentationAndSummaryOfSignificantAccountingPoliciesMineralPropertiesAndExplorationExpensesPolicies12