3.20.2 html 101 106 1 true 105 0 false 2 false false R1.htm 000001 - Document - Document and Entity Information Sheet http://www.American.com/20200630/role/DocumentAndEntityInformation Document and Entity Information 1 false true R2.htm 020000 - Document - Risk/Return Summary {Unlabeled} - GROWTH FUND OF AMERICA?? Sheet http://www.American.com/20200630/role/DocumentRiskReturnSummaryUnlabeledGROWTHFUNDOFAMERICA Risk/Return Summary- GROWTH FUND OF AMERICA?? 2 false false R6.htm 020004 - Disclosure - Risk/Return Detail Data {Elements} - GROWTH FUND OF AMERICA?? Sheet http://www.American.com/20200630/role/DisclosureRiskReturnDetailDataElementsGROWTHFUNDOFAMERICA Risk/Return Detail Data- GROWTH FUND OF AMERICA?? 3 false true R7.htm 020005 - Document - Risk/Return Summary {Unlabeled} - U.S. Government Securities Fund?? Sheet http://www.American.com/20200630/role/DocumentRiskReturnSummaryUnlabeledUSGovernmentSecuritiesFund Risk/Return Summary- U.S. Government Securities Fund?? 4 false false R11.htm 020009 - Disclosure - Risk/Return Detail Data {Elements} - U.S. Government Securities Fund?? Sheet http://www.American.com/20200630/role/DisclosureRiskReturnDetailDataElementsUSGovernmentSecuritiesFund Risk/Return Detail Data- U.S. Government Securities Fund?? 5 false true R12.htm 020010 - Document - Risk/Return Summary {Unlabeled} - INTERMEDIATE BOND FUND OF AMERICA?? Sheet http://www.American.com/20200630/role/DocumentRiskReturnSummaryUnlabeledINTERMEDIATEBONDFUNDOFAMERICA Risk/Return Summary- INTERMEDIATE BOND FUND OF AMERICA?? 6 false false R16.htm 020014 - Disclosure - Risk/Return Detail Data {Elements} - INTERMEDIATE BOND FUND OF AMERICA?? Sheet http://www.American.com/20200630/role/DisclosureRiskReturnDetailDataElementsINTERMEDIATEBONDFUNDOFAMERICA Risk/Return Detail Data- INTERMEDIATE BOND FUND OF AMERICA?? 7 false true R17.htm 020015 - Document - Risk/Return Summary {Unlabeled} - AMERICAN FUNDS MORTGAGE FUND?? Sheet http://www.American.com/20200630/role/DocumentRiskReturnSummaryUnlabeledAMERICANFUNDSMORTGAGEFUND Risk/Return Summary- AMERICAN FUNDS MORTGAGE FUND?? 8 false false R21.htm 020019 - Disclosure - Risk/Return Detail Data {Elements} - AMERICAN FUNDS MORTGAGE FUND?? Sheet http://www.American.com/20200630/role/DisclosureRiskReturnDetailDataElementsAMERICANFUNDSMORTGAGEFUND Risk/Return Detail Data- AMERICAN FUNDS MORTGAGE FUND?? 9 false true R22.htm 020020 - Document - Risk/Return Summary {Unlabeled} - Short-Term Bond Fund of America?? Sheet http://www.American.com/20200630/role/DocumentRiskReturnSummaryUnlabeledShortTermBondFundofAmerica Risk/Return Summary- Short-Term Bond Fund of America?? 10 false false R26.htm 020024 - Disclosure - Risk/Return Detail Data {Elements} - Short-Term Bond Fund of America?? Sheet http://www.American.com/20200630/role/DisclosureRiskReturnDetailDataElementsShortTermBondFundofAmerica Risk/Return Detail Data- Short-Term Bond Fund of America?? 11 false false R27.htm 040000 - Disclosure - Risk/Return Detail Data {Elements} Sheet http://xbrl.sec.gov/rr/role/RiskReturnDetailData Risk/Return Detail Data 12 false false All Reports Book All Reports ck0000044201-20200630.xml ck0000044201-20200630.xsd ck0000044201-20200630_cal.xml ck0000044201-20200630_def.xml ck0000044201-20200630_lab.xml ck0000044201-20200630_pre.xml http://xbrl.sec.gov/dei/2018-01-31 http://xbrl.sec.gov/rr/2018-01-31 true true