2.4.0.8 HtmlAndXml 29 94 1 true 22 0 false 2 false false R1.htm 000001 - Document - Document and Entity Information Sheet http://sunamerica.com/20130729/role/DocumentAndEntityInformation Document and Entity Information R1.xml false true R2.htm 020000 - Document - Risk/Return Summary {Unlabeled} - U.S. Government Securities Sheet http://sunamerica.com/20130729/role/DocumentRiskReturnSummaryUnlabeledUSGovernmentSecurities Risk/Return Summary - U.S. Government Securities R2.xml false false R9.htm 020007 - Disclosure - Risk/Return Detail Data {Elements} - U.S. Government Securities Sheet http://sunamerica.com/20130729/role/DisclosureRiskReturnDetailDataElementsUSGovernmentSecurities Risk/Return Detail Data - U.S. Government Securities R9.xml false true R10.htm 020008 - Document - Risk/Return Summary {Unlabeled} - GNMA Fund Sheet http://sunamerica.com/20130729/role/DocumentRiskReturnSummaryUnlabeledGNMAFund Risk/Return Summary - GNMA Fund R10.xml false false R17.htm 020015 - Disclosure - Risk/Return Detail Data {Elements} - GNMA Fund Sheet http://sunamerica.com/20130729/role/DisclosureRiskReturnDetailDataElementsGNMAFund Risk/Return Detail Data - GNMA Fund R17.xml false true R18.htm 020016 - Document - Risk/Return Summary {Unlabeled} - Strategic Bond Sheet http://sunamerica.com/20130729/role/DocumentRiskReturnSummaryUnlabeledStrategicBond Risk/Return Summary - Strategic Bond R18.xml false false R25.htm 020023 - Disclosure - Risk/Return Detail Data {Elements} - Strategic Bond Sheet http://sunamerica.com/20130729/role/DisclosureRiskReturnDetailDataElementsStrategicBond Risk/Return Detail Data - Strategic Bond R25.xml false true R26.htm 020024 - Document - Risk/Return Summary {Unlabeled} - High Yield Bond Sheet http://sunamerica.com/20130729/role/DocumentRiskReturnSummaryUnlabeledHighYieldBond Risk/Return Summary - High Yield Bond R26.xml false false R33.htm 020031 - Disclosure - Risk/Return Detail Data {Elements} - High Yield Bond Sheet http://sunamerica.com/20130729/role/DisclosureRiskReturnDetailDataElementsHighYieldBond Risk/Return Detail Data - High Yield Bond R33.xml false false R34.htm 040000 - Disclosure - Risk/Return Detail Data {Elements} Sheet http://xbrl.sec.gov/rr/role/RiskReturnDetailData Risk/Return Detail Data R34.xml true false All Reports Book All Reports ck0000795307-20130729.xml ck0000795307-20130729.xsd ck0000795307-20130729_cal.xml ck0000795307-20130729_def.xml ck0000795307-20130729_lab.xml ck0000795307-20130729_pre.xml BarChart1.jpg BarChart2.jpg BarChart3.jpg BarChart4.jpg true true