| 6. COMMON STOCK TRANSACTIONS (Details Narrative) (USD $) | 3 Months Ended | 6 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
| Oct. 31, 2014 | Oct. 31, 2013 | Oct. 31, 2014 | Oct. 31, 2013 | Apr. 30, 2014 | |
| Stock sold, shares issued | 200,000us-gaap_StockIssuedDuringPeriodSharesNewIssues | ||||
| Stock sold, value | $ 20,000us-gaap_StockIssuedDuringPeriodValueNewIssues | ||||
| Stock issued to satisfy all stock payables, stock issued | 17,628,000us-gaap_StockIssuedDuringPeriodSharesOther | 250,000us-gaap_StockIssuedDuringPeriodSharesOther | |||
| Stock issued to satisfy all stock payables, value | 1,574,860us-gaap_StockIssuedDuringPeriodValueOther | 45,500us-gaap_StockIssuedDuringPeriodValueOther | |||
| Stock returned, shares returned | 15,606,667us-gaap_StockRepurchasedDuringPeriodShares | ||||
| Stock returned, value | 2,153,490us-gaap_StockRepurchasedDuringPeriodValue | ||||
| Gain on stock returned | 2,183,331nvlx_GainOnSettlementOfStockRecoveries | 0nvlx_GainOnSettlementOfStockRecoveries | 2,183,331nvlx_GainOnSettlementOfStockRecoveries | 0nvlx_GainOnSettlementOfStockRecoveries | |
| Stock options issued | 25,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod | ||||
| Option expiration date | Sep. 30, 2019 | ||||
| Option exercise price | $ 0.19us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice | $ 0.19us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice | |||
| Share based compensation | 4,307,822us-gaap_ShareBasedCompensation | 0us-gaap_ShareBasedCompensation | |||
| Compensation Agreements [Member] | |||||
| Stock issued for compensation, shares issued | 1,700,000us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross / us-gaap_OtherCommitmentsAxis = nvlx_CompensationAgreementsMember | ||||
| Warrants | |||||
| Stock issued for compensation, value | 394,250us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationGross / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_WarrantMember | ||||
| Warrants converted to common stock, stock issued | 550,000us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_WarrantMember | ||||
| Warrants converted to common stock, value | 66,000us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_WarrantMember | ||||
| Officer [Member] | |||||
| Stock issued for compensation, shares issued | 300,000us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross / us-gaap_TitleOfIndividualAxis = us-gaap_OfficerMember | ||||
| Stock issued for compensation, value | 86,100us-gaap_StockIssuedDuringPeriodValueShareBasedCompensationGross / us-gaap_TitleOfIndividualAxis = us-gaap_OfficerMember | ||||
| Consultant [Member] | |||||
| Stock returned, shares returned | 335,296us-gaap_StockRepurchasedDuringPeriodShares / us-gaap_TitleOfIndividualAxis = nvlx_ConsultantMember | ||||
| Gain on stock returned | $ 29,841nvlx_GainOnSettlementOfStockRecoveries / us-gaap_TitleOfIndividualAxis = nvlx_ConsultantMember | ||||
| X | ||||||||||
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- Definition Gain on settlement of stock recoveries No definition available. 
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- Definition Expiration date of the open option contracts written on the investment, in CCYY-MM-DD format. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Net number of share options (or share units) granted during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Number of shares issued during the period as a result of the conversion of convertible securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Number of new stock issued during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Number of shares of stock issued during the period that is attributable to transactions involving issuance of stock not separately disclosed. No definition available. 
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- Definition Gross number of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP). Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans. No definition available. 
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- Definition The gross value of stock issued during the period upon the conversion of convertible securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Value of shares of stock issued during the period that is attributable to transactions involving issuance of stock not separately disclosed. No definition available. 
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- Definition Gross value of stock (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP). Stock issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans. No definition available. 
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- Definition Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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