2.2.0.25truefalse00101 - Document - Document And Entity Information {Elements}truetruefalse1falsefalsefalsefalse5/1/2011 - 5/1/2011 eol_0000950123-11-041930_STD_1_20110501_0http://www.sec.gov/CIK0000899148duration2011-05-01T00:00:002011-05-01T00:00:00pureStandardhttp://www.xbrl.org/2003/instancepure02true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:3false0dei_DocumentTypedeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00485BPOSfalsefalsefalsefalsefalseOtherus-types:SECReportItemTypenaThe type of document being provided (such as 10-K, 10-Q, N-1A, etc). The document type should be limited to the same value as the supporting SEC submission type. The acceptable values are as follows: S-1, S-3, S-4, S-11, F-1, F-3, F-4, F-9, F-10, 6-K, 8-K, 10, 10-K, 10-Q, 20-F, 40-F, N-1A, 485BPOS, NCSR, N-Q, and Other.No authoritative reference available.falsefalseDocument Type4false0dei_DocumentPeriodEndDatedeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002010-12-31falsefalsetruefalsefalseOtherxbrli:dateItemTypedateThe end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements this will be the filing date. The format of the date is CCYY-MM-DD.No authoritative reference available.falsefalseDocument Period End Date5false0dei_EntityRegistrantNamedeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00RYDEX SERIES FUNDSfalsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringThe exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation 12B -Number 240 -Section 12b -Subsection 1 falsefalseRegistrant Name6false0dei_EntityCentralIndexKeydeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse000000899148falsefalsefalsefalsefalseOtherus-types:centralIndexKeyItemTypenaA unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation 12B -Number 240 -Section 12b -Subsection 1 falsefalseCentral Index Key7false0dei_AmendmentFlagdeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalsefalseOtherxbrli:booleanItemTypenaIf the value is true, then the document as an amendment to previously-filed/accepted document.No authoritative reference available.falsefalseAmendment Flag8false0dei_DocumentCreationDatedeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002011-04-29falsefalsetruefalsefalseOtherxbrli:dateItemTypedateThe date the document was made available and submitted, in CCYY-MM-DD format. The date of submission, date of acceptance by the recipient, and the document effective date are all potentially different.No authoritative reference available.falsefalseDocument Creation Date9false0dei_DocumentEffectiveDatedeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse002011-05-01falsefalsetruefalsefalseOtherxbrli:dateItemTypedateThe date when a document, upon receipt and acceptance, becomes officially effective, in CCYY-MM-DD format. Usually it is a system-assigned date time value, but it may be declared by the submitter in some cases.No authoritative reference available.falsefalseDocument Effective Date10false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.rydex-sgi.com/role/documentdocumentandentityinformation1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : SummaryS000025112-1 Member {dei_LegalEntityAxis} : S000025112 Member {rr_ProspectusShareClassAxis} : C000074748 Member 5/1/2011 - 5/1/2011 eol_0000950123-11-041930_STD_1_20110501_0_396770x-9991824_396840x-9991814_429423x-9991835http://www.sec.gov/CIK0000899148duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseLong/Short Commodities Strategy Fund (First Prospectus Summary)dei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_SummaryS000025112-1Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseLong/Short Commodities Strategy Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000025112Memberdei_LegalEntityAxisexplicitMemberfalsefalseA-Classrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_C000074748Memberrr_ProspectusShareClassAxisexplicitMemberOthernaNo definition available.No authoritative reference available.falsefalseLong/Short Commodities Strategy Fund (First Prospectus Summary) | Long/Short Commodities Strategy Fund | A-Class11true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:12false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00RYLBXfalsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol13false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.rydex-sgi.com/role/documentdocumentandentityinformation1falsefalsefalse00falsefalsefalsefalsefalse3falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : SummaryS000025112-1 Member {dei_LegalEntityAxis} : S000025112 Member {rr_ProspectusShareClassAxis} : C000074749 Member 5/1/2011 - 5/1/2011 eol_0000950123-11-041930_STD_1_20110501_0_396770x-9991824_396840x-9991814_429423x-9991834http://www.sec.gov/CIK0000899148duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseLong/Short Commodities Strategy Fund (First Prospectus Summary)dei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_SummaryS000025112-1Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseLong/Short Commodities Strategy Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000025112Memberdei_LegalEntityAxisexplicitMemberfalsefalseC-Classrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_C000074749Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseLong/Short Commodities Strategy Fund (First Prospectus Summary) | Long/Short Commodities Strategy Fund | C-Class14true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:15false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00RYLEXfalsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol16false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.rydex-sgi.com/role/documentdocumentandentityinformation1falsefalsefalse00falsefalsefalsefalsefalse4falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : SummaryS000014094-1 Member {dei_LegalEntityAxis} : S000014094 Member {rr_ProspectusShareClassAxis} : C000039064 Member 5/1/2011 - 5/1/2011 eol_0000950123-11-041930_STD_1_20110501_0_396770x-9991825_396840x-9991818_429423x-9991837http://www.sec.gov/CIK0000899148duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseManaged Futures Strategy Fund (First Prospectus Summary)dei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_SummaryS000014094-1Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseManaged Futures Strategy Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000014094Memberdei_LegalEntityAxisexplicitMemberfalsefalseA-Classrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_C000039064Memberrr_ProspectusShareClassAxisexplicitMemberOthernaNo definition available.No authoritative reference available.falsefalseManaged Futures Strategy Fund (First Prospectus Summary) | Managed Futures Strategy Fund | A-Class17true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:18false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00RYMTXfalsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol19false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.rydex-sgi.com/role/documentdocumentandentityinformation1falsefalsefalse00falsefalsefalsefalsefalse5falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : SummaryS000014094-1 Member {dei_LegalEntityAxis} : S000014094 Member {rr_ProspectusShareClassAxis} : C000039065 Member 5/1/2011 - 5/1/2011 eol_0000950123-11-041930_STD_1_20110501_0_396770x-9991825_396840x-9991818_429423x-9991836http://www.sec.gov/CIK0000899148duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseManaged Futures Strategy Fund (First Prospectus Summary)dei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_SummaryS000014094-1Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseManaged Futures Strategy Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000014094Memberdei_LegalEntityAxisexplicitMemberfalsefalseC-Classrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_C000039065Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseManaged Futures Strategy Fund (First Prospectus Summary) | Managed Futures Strategy Fund | C-Class20true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:21false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00RYMZXfalsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol22false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.rydex-sgi.com/role/documentdocumentandentityinformation1falsefalsefalse00falsefalsefalsefalsefalse6falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : SummaryS000003763-1 Member {dei_LegalEntityAxis} : S000003763 Member {rr_ProspectusShareClassAxis} : C000010439 Member 5/1/2011 - 5/1/2011 eol_0000950123-11-041930_STD_1_20110501_0_396770x-9991827_396840x-9991823_429423x-9991843http://www.sec.gov/CIK0000899148duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseMulti-Hedge Strategies Fund (First Prospectus Summary)dei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_SummaryS000003763-1Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseMulti-Hedge Strategies Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000003763Memberdei_LegalEntityAxisexplicitMemberfalsefalseArr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_C000010439Memberrr_ProspectusShareClassAxisexplicitMemberOthernaNo definition available.No authoritative reference available.falsefalseMulti-Hedge Strategies Fund (First Prospectus Summary) | Multi-Hedge Strategies Fund | A23true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:24false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00RYMQXfalsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol25false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.rydex-sgi.com/role/documentdocumentandentityinformation1falsefalsefalse00falsefalsefalsefalsefalse7falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : SummaryS000003763-1 Member {dei_LegalEntityAxis} : S000003763 Member {rr_ProspectusShareClassAxis} : C000010440 Member 5/1/2011 - 5/1/2011 eol_0000950123-11-041930_STD_1_20110501_0_396770x-9991827_396840x-9991823_429423x-9991842http://www.sec.gov/CIK0000899148duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseMulti-Hedge Strategies Fund (First Prospectus Summary)dei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_SummaryS000003763-1Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseMulti-Hedge Strategies Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000003763Memberdei_LegalEntityAxisexplicitMemberfalsefalseCrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_C000010440Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseMulti-Hedge Strategies Fund (First Prospectus Summary) | Multi-Hedge Strategies Fund | C26true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:27false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00RYMRXfalsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol28false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.rydex-sgi.com/role/documentdocumentandentityinformation1falsefalsefalse00falsefalsefalsefalsefalse8falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : SummaryS000003774-1 Member {dei_LegalEntityAxis} : S000003774 Member {rr_ProspectusShareClassAxis} : C000010464 Member 5/1/2011 - 5/1/2011 eol_0000950123-11-041930_STD_1_20110501_0_396770x-9991826_396840x-9991820_429423x-9991840http://www.sec.gov/CIK0000899148duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseCommodities Strategy Fund (First Prospectus Summary)dei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_SummaryS000003774-1Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseCommodities Strategy Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000003774Memberdei_LegalEntityAxisexplicitMemberfalsefalseArr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_C000010464Memberrr_ProspectusShareClassAxisexplicitMemberOthernaNo definition available.No authoritative reference available.falsefalseCommodities Strategy Fund (First Prospectus Summary) | Commodities Strategy Fund | A29true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:30false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00RYMEXfalsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol31false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.rydex-sgi.com/role/documentdocumentandentityinformation1falsefalsefalse00falsefalsefalsefalsefalse9falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : SummaryS000003774-1 Member {dei_LegalEntityAxis} : S000003774 Member {rr_ProspectusShareClassAxis} : C000010465 Member 5/1/2011 - 5/1/2011 eol_0000950123-11-041930_STD_1_20110501_0_396770x-9991826_396840x-9991820_429423x-9991839http://www.sec.gov/CIK0000899148duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseCommodities Strategy Fund (First Prospectus Summary)dei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_SummaryS000003774-1Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseCommodities Strategy Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000003774Memberdei_LegalEntityAxisexplicitMemberfalsefalseCrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_C000010465Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseCommodities Strategy Fund (First Prospectus Summary) | Commodities Strategy Fund | C32true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:33false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00RYMJXfalsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol34false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.rydex-sgi.com/role/documentdocumentandentityinformation1falsefalsefalse00falsefalsefalsefalsefalse10falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : SummaryS000025112-2 Member {dei_LegalEntityAxis} : S000025112 Member {rr_ProspectusShareClassAxis} : C000074750 Member 5/1/2011 - 5/1/2011 eol_0000950123-11-041930_STD_1_20110501_0_396770x-9991824_396840x-9991813_429423x-9991833http://www.sec.gov/CIK0000899148duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseLong/Short Commodities Strategy Fund (Second Prospectus Summary)dei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_SummaryS000025112-2Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseLong/Short Commodities Strategy Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000025112Memberdei_LegalEntityAxisexplicitMemberfalsefalseH-Classrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_C000074750Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseLong/Short Commodities Strategy Fund (Second Prospectus Summary) | Long/Short Commodities Strategy Fund | H-Class35true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:36false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00RYLFXfalsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol37false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.rydex-sgi.com/role/documentdocumentandentityinformation1falsefalsefalse00falsefalsefalsefalsefalse11falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : SummaryS000014094-2 Member {dei_LegalEntityAxis} : S000014094 Member {rr_ProspectusShareClassAxis} : C000038557 Member 5/1/2011 - 5/1/2011 eol_0000950123-11-041930_STD_1_20110501_0_396770x-9991825_396840x-9991817_429423x-9991838http://www.sec.gov/CIK0000899148duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseManaged Futures Strategy Fund (Second Prospectus Summary)dei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_SummaryS000014094-2Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseManaged Futures Strategy Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000014094Memberdei_LegalEntityAxisexplicitMemberfalsefalseH-Class Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_C000038557Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseManaged Futures Strategy Fund (Second Prospectus Summary) | Managed Futures Strategy Fund | H-Class Shares38true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:39false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00RYMFXfalsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol40false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.rydex-sgi.com/role/documentdocumentandentityinformation1falsefalsefalse00falsefalsefalsefalsefalse12falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : SummaryS000003763-2 Member {dei_LegalEntityAxis} : S000003763 Member {rr_ProspectusShareClassAxis} : C000010438 Member 5/1/2011 - 5/1/2011 eol_0000950123-11-041930_STD_1_20110501_0_396770x-9991827_396840x-9991822_429423x-9991844http://www.sec.gov/CIK0000899148duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseMulti-Hedge Strategies Fund (Second Prospectus Summary)dei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_SummaryS000003763-2Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseMulti-Hedge Strategies Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000003763Memberdei_LegalEntityAxisexplicitMemberfalsefalseHrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_C000010438Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseMulti-Hedge Strategies Fund (Second Prospectus Summary) | Multi-Hedge Strategies Fund | H41true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:42false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00RYMSXfalsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol43false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.rydex-sgi.com/role/documentdocumentandentityinformation1falsefalsefalse00falsefalsefalsefalsefalse13falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : SummaryS000003774-2 Member {dei_LegalEntityAxis} : S000003774 Member {rr_ProspectusShareClassAxis} : C000010463 Member 5/1/2011 - 5/1/2011 eol_0000950123-11-041930_STD_1_20110501_0_396770x-9991826_396840x-9991819_429423x-9991841http://www.sec.gov/CIK0000899148duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseCommodities Strategy Fund (Second Prospectus Summary)dei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_SummaryS000003774-2Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseCommodities Strategy Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000003774Memberdei_LegalEntityAxisexplicitMemberfalsefalseHrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_C000010463Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseCommodities Strategy Fund (Second Prospectus Summary) | Commodities Strategy Fund | H44true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:45false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00RYMBXfalsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol46false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.rydex-sgi.com/role/documentdocumentandentityinformation1falsefalsefalse00falsefalsefalsefalsefalse14falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : SummaryS000025112-3 Member {dei_LegalEntityAxis} : S000025112 Member {rr_ProspectusShareClassAxis} : C000088410 Member 5/1/2011 - 5/1/2011 eol_0000950123-11-041930_STD_1_20110501_0_396770x-9991824_396840x-9991812_429423x-9991828http://www.sec.gov/CIK0000899148duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseLong/Short Commodities Strategy Fund (Third Prospectus Summary)dei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_SummaryS000025112-3Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseLong/Short Commodities Strategy Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000025112Memberdei_LegalEntityAxisexplicitMemberfalsefalseInstitutional Class Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_C000088410Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseLong/Short Commodities Strategy Fund (Third Prospectus Summary) | Long/Short Commodities Strategy Fund | Institutional Class Shares47true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:48false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00RYITXfalsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol49false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.rydex-sgi.com/role/documentdocumentandentityinformation1falsefalsefalse00falsefalsefalsefalsefalse15falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : SummaryS000014094-3 Member {dei_LegalEntityAxis} : S000014094 Member {rr_ProspectusShareClassAxis} : C000088408 Member 5/1/2011 - 5/1/2011 eol_0000950123-11-041930_STD_1_20110501_0_396770x-9991825_396840x-9991816_429423x-9991829http://www.sec.gov/CIK0000899148duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseManaged Futures Strategy Fund (Third Prospectus Summary)dei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_SummaryS000014094-3Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseManaged Futures Strategy Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000014094Memberdei_LegalEntityAxisexplicitMemberfalsefalseInstitutional Class Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_C000088408Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseManaged Futures Strategy Fund (Third Prospectus Summary) | Managed Futures Strategy Fund | Institutional Class Shares50true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:51false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00RYIFXfalsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol52false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.rydex-sgi.com/role/documentdocumentandentityinformation1falsefalsefalse00falsefalsefalsefalsefalse16falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : SummaryS000003763-3 Member {dei_LegalEntityAxis} : S000003763 Member {rr_ProspectusShareClassAxis} : C000088407 Member 5/1/2011 - 5/1/2011 eol_0000950123-11-041930_STD_1_20110501_0_396770x-9991827_396840x-9991821_429423x-9991830http://www.sec.gov/CIK0000899148duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseMulti-Hedge Strategies Fund (Third Prospectus Summary)dei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_SummaryS000003763-3Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseMulti-Hedge Strategies Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000003763Memberdei_LegalEntityAxisexplicitMemberfalsefalseInstitutional Class Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_C000088407Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseMulti-Hedge Strategies Fund (Third Prospectus Summary) | Multi-Hedge Strategies Fund | Institutional Class Shares53true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:54false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00RYIMXfalsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol55false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.rydex-sgi.com/role/documentdocumentandentityinformation1falsefalsefalse00falsefalsefalsefalsefalse17falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : SummaryS000025112-4 Member {dei_LegalEntityAxis} : S000025112 Member {rr_ProspectusShareClassAxis} : C000087660 Member 5/1/2011 - 5/1/2011 eol_0000950123-11-041930_STD_1_20110501_0_396770x-9991824_396840x-9991811_429423x-9991831http://www.sec.gov/CIK0000899148duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseLong/Short Commodities Strategy Fund (Fourth Prospectus Summary)dei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_SummaryS000025112-4Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseLong/Short Commodities Strategy Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000025112Memberdei_LegalEntityAxisexplicitMemberfalsefalseY-Class Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_C000087660Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseLong/Short Commodities Strategy Fund (Fourth Prospectus Summary) | Long/Short Commodities Strategy Fund | Y-Class Shares56true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:57false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00RYYSXfalsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol58false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://www.rydex-sgi.com/role/documentdocumentandentityinformation1falsefalsefalse00falsefalsefalsefalsefalse18falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : SummaryS000014094-4 Member {dei_LegalEntityAxis} : S000014094 Member {rr_ProspectusShareClassAxis} : C000087659 Member 5/1/2011 - 5/1/2011 eol_0000950123-11-041930_STD_1_20110501_0_396770x-9991825_396840x-9991815_429423x-9991832http://www.sec.gov/CIK0000899148duration2011-05-01T00:00:002011-05-01T00:00:00falsefalseManaged Futures Strategy Fund (Fourth Prospectus Summary)dei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_SummaryS000014094-4Memberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalseManaged Futures Strategy Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_S000014094Memberdei_LegalEntityAxisexplicitMemberfalsefalseY-Class Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldick0000899148_C000087659Memberrr_ProspectusShareClassAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepure0OthernaNo definition available.No authoritative reference available.falsefalseManaged Futures Strategy Fund (Fourth Prospectus Summary) | Managed Futures Strategy Fund | Y-Class Shares59true0rr_RiskReturnAbstractrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNo definition available.falsefalseRisk/Return:60false0dei_TradingSymboldeifalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00RYYMXfalsefalsefalsefalsefalseOtherxbrli:normalizedStringItemTypenormalizedstringTrading symbol of an instrument as listed on an exchange.No authoritative reference available.falsefalseTrading Symbol159Document And Entity InformationUnKnownUnKnownUnKnownUnKnownfalsetrue