000000 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 000011 - Document - Risk/Return Summary {Unlabeled} - Calvert Income Fund - Retail link:presentationLink link:calculationLink link:definitionLink 000012 - Schedule - Shareholder Fees {- Calvert Income Fund} link:presentationLink link:calculationLink link:definitionLink 000013 - Schedule - Annual Fund Operating Expenses {- Calvert Income Fund} link:presentationLink link:calculationLink link:definitionLink 000014 - Schedule - Expense Example {Transposed} {- Calvert Income Fund} link:presentationLink link:calculationLink link:definitionLink 000015 - Schedule - Expense Example, No Redemption {Transposed} {- Calvert Income Fund} link:presentationLink link:calculationLink link:definitionLink 000016 - Schedule - Annual Total Returns - Calvert Income Fund [BarChart] link:presentationLink link:calculationLink link:definitionLink 000017 - Schedule - Average Annual Total Returns {Transposed} {- Calvert Income Fund} link:presentationLink link:calculationLink link:definitionLink 000018 - Document - Risk/Return Detail {Unlabeled} - Calvert Income Fund link:presentationLink link:calculationLink link:definitionLink 000019 - Disclosure - Risk/Return Detail Data {Elements} - Calvert Income Fund - Retail link:presentationLink link:calculationLink link:definitionLink 000021 - Document - Risk/Return Summary {Unlabeled} - Calvert Short Duration Income Fund - Retail link:presentationLink link:calculationLink link:definitionLink 000022 - Schedule - Shareholder Fees {- Calvert Short Duration Income Fund} link:presentationLink link:calculationLink link:definitionLink 000023 - Schedule - Annual Fund Operating Expenses {- Calvert Short Duration Income Fund} link:presentationLink link:calculationLink link:definitionLink 000024 - Schedule - Expense Example {Transposed} {- Calvert Short Duration Income Fund} link:presentationLink link:calculationLink link:definitionLink 000025 - Schedule - Expense Example, No Redemption {Transposed} {- Calvert Short Duration Income Fund} link:presentationLink link:calculationLink link:definitionLink 000026 - Schedule - Annual Total Returns - Calvert Short Duration Income Fund [BarChart] link:presentationLink link:calculationLink link:definitionLink 000027 - Schedule - Average Annual Total Returns {Transposed} {- Calvert Short Duration Income Fund} link:presentationLink link:calculationLink link:definitionLink 000028 - Document - Risk/Return Detail {Unlabeled} - Calvert Short Duration Income Fund link:presentationLink link:calculationLink link:definitionLink 000029 - Disclosure - Risk/Return Detail Data {Elements} - Calvert Short Duration Income Fund - Retail link:presentationLink link:calculationLink link:definitionLink 000031 - Document - Risk/Return Summary {Unlabeled} - Calvert Long-Term Income Fund - Retail link:presentationLink link:calculationLink link:definitionLink 000032 - Schedule - Shareholder Fees {- Calvert Long-Term Income Fund} link:presentationLink link:calculationLink link:definitionLink 000033 - Schedule - Annual Fund Operating Expenses {- Calvert Long-Term Income Fund} link:presentationLink link:calculationLink link:definitionLink 000034 - Schedule - Expense Example {Transposed} {- Calvert Long-Term Income Fund} link:presentationLink link:calculationLink link:definitionLink 000035 - Schedule - Expense Example, No Redemption {Transposed} {- Calvert Long-Term Income Fund} link:presentationLink link:calculationLink link:definitionLink 000036 - Schedule - Annual Total Returns - Calvert Long-Term Income Fund [BarChart] link:presentationLink link:calculationLink link:definitionLink 000037 - Schedule - Average Annual Total Returns {Transposed} {- Calvert Long-Term Income Fund} link:presentationLink link:calculationLink link:definitionLink 000038 - Document - Risk/Return Detail {Unlabeled} - Calvert Long-Term Income Fund link:presentationLink link:calculationLink link:definitionLink 000039 - Disclosure - Risk/Return Detail Data {Elements} - Calvert Long-Term Income Fund - Retail link:presentationLink link:calculationLink link:definitionLink 000041 - Document - Risk/Return Summary {Unlabeled} - Calvert Ultra-Short Income Fund - Retail link:presentationLink link:calculationLink link:definitionLink 000042 - Schedule - Shareholder Fees {- Calvert Ultra-Short Income Fund} link:presentationLink link:calculationLink link:definitionLink 000043 - Schedule - Annual Fund Operating Expenses {- Calvert Ultra-Short Income Fund} link:presentationLink link:calculationLink link:definitionLink 000044 - Schedule - Expense Example {Transposed} {- Calvert Ultra-Short Income Fund} link:presentationLink link:calculationLink link:definitionLink 000045 - Schedule - Expense Example, No Redemption {Transposed} {- Calvert Ultra-Short Income Fund} link:presentationLink link:calculationLink link:definitionLink 000046 - Schedule - Annual Total Returns - Calvert Ultra-Short Income Fund [BarChart] link:presentationLink link:calculationLink link:definitionLink 000047 - Schedule - Average Annual Total Returns {Transposed} {- Calvert Ultra-Short Income Fund} link:presentationLink link:calculationLink link:definitionLink 000048 - Document - Risk/Return Detail {Unlabeled} - Calvert Ultra-Short Income Fund link:presentationLink link:calculationLink link:definitionLink 000049 - Disclosure - Risk/Return Detail Data {Elements} - Calvert Ultra-Short Income Fund - Retail link:presentationLink link:calculationLink link:definitionLink 000051 - Document - Risk/Return Summary {Unlabeled} - Calvert Government Fund - Retail link:presentationLink link:calculationLink link:definitionLink 000052 - Schedule - Shareholder Fees {- Calvert Government Fund} link:presentationLink link:calculationLink link:definitionLink 000053 - Schedule - Annual Fund Operating Expenses {- Calvert Government Fund} link:presentationLink link:calculationLink link:definitionLink 000054 - Schedule - Expense Example {Transposed} {- Calvert Government Fund} link:presentationLink link:calculationLink link:definitionLink 000055 - Schedule - Expense Example, No Redemption {Transposed} {- Calvert Government Fund} link:presentationLink link:calculationLink link:definitionLink 000056 - Schedule - Annual Total Returns - Calvert Government Fund [BarChart] link:presentationLink link:calculationLink link:definitionLink 000057 - Schedule - Average Annual Total Returns {Transposed} {- Calvert Government Fund} link:presentationLink link:calculationLink link:definitionLink 000058 - Document - Risk/Return Detail {Unlabeled} - Calvert Government Fund link:presentationLink link:calculationLink link:definitionLink 000059 - Disclosure - Risk/Return Detail Data {Elements} - Calvert Government Fund - Retail link:presentationLink link:calculationLink link:definitionLink 000061 - Document - Risk/Return Summary {Unlabeled} - Calvert High Yield Bond Fund - Retail link:presentationLink link:calculationLink link:definitionLink 000062 - Schedule - Shareholder Fees {- Calvert High Yield Bond Fund} link:presentationLink link:calculationLink link:definitionLink 000063 - Schedule - Annual Fund Operating Expenses {- Calvert High Yield Bond Fund} link:presentationLink link:calculationLink link:definitionLink 000064 - Schedule - Expense Example {Transposed} {- Calvert High Yield Bond Fund} link:presentationLink link:calculationLink link:definitionLink 000065 - Schedule - Expense Example, No Redemption {Transposed} {- Calvert High Yield Bond Fund} link:presentationLink link:calculationLink link:definitionLink 000066 - Schedule - Annual Total Returns - Calvert High Yield Bond Fund [BarChart] link:presentationLink link:calculationLink link:definitionLink 000067 - Schedule - Average Annual Total Returns {Transposed} {- Calvert High Yield Bond Fund} link:presentationLink link:calculationLink link:definitionLink 000068 - Document - Risk/Return Detail {Unlabeled} - Calvert High Yield Bond Fund link:presentationLink link:calculationLink link:definitionLink 000069 - Disclosure - Risk/Return Detail Data {Elements} - Calvert High Yield Bond Fund - Retail link:presentationLink link:calculationLink link:definitionLink 000071 - Document - Risk/Return Summary {Unlabeled} - Calvert Income Fund - Institutional link:presentationLink link:calculationLink link:definitionLink 000072 - Schedule - Shareholder Fees {- Calvert Income Fund Class I} link:presentationLink link:calculationLink link:definitionLink 000073 - Schedule - Annual Fund Operating Expenses {- Calvert Income Fund Class I} link:presentationLink link:calculationLink link:definitionLink 000074 - Schedule - Expense Example {Transposed} {- Calvert Income Fund Class I} link:presentationLink link:calculationLink link:definitionLink 000075 - Schedule - Expense Example, No Redemption {Transposed} {- Calvert Income Fund Class I} link:presentationLink link:calculationLink link:definitionLink 000076 - Schedule - Annual Total Returns - Calvert Income Fund Class I [BarChart] link:presentationLink link:calculationLink link:definitionLink 000077 - Schedule - Average Annual Total Returns {Transposed} {- Calvert Income Fund Class I} link:presentationLink link:calculationLink link:definitionLink 000078 - Document - Risk/Return Detail {Unlabeled} - Calvert Income Fund Class I link:presentationLink link:calculationLink link:definitionLink 000079 - Disclosure - Risk/Return Detail Data {Elements} - Calvert Income Fund - Institutional link:presentationLink link:calculationLink link:definitionLink 000081 - Document - Risk/Return Summary {Unlabeled} - Calvert Short Duration Income Fund - Institutional link:presentationLink link:calculationLink link:definitionLink 000082 - Schedule - Shareholder Fees {- Calvert Short Duration Income Fund Class I} link:presentationLink link:calculationLink link:definitionLink 000083 - Schedule - Annual Fund Operating Expenses {- Calvert Short Duration Income Fund Class I} link:presentationLink link:calculationLink link:definitionLink 000084 - Schedule - Expense Example {Transposed} {- Calvert Short Duration Income Fund Class I} link:presentationLink link:calculationLink link:definitionLink 000085 - Schedule - Expense Example, No Redemption {Transposed} {- Calvert Short Duration Income Fund Class I} link:presentationLink link:calculationLink link:definitionLink 000086 - Schedule - Annual Total Returns - Calvert Short Duration Income Fund Class I [BarChart] link:presentationLink link:calculationLink link:definitionLink 000087 - Schedule - Average Annual Total Returns {Transposed} {- Calvert Short Duration Income Fund Class I} link:presentationLink link:calculationLink link:definitionLink 000088 - Document - Risk/Return Detail {Unlabeled} - Calvert Short Duration Income Fund Class I link:presentationLink link:calculationLink link:definitionLink 000089 - Disclosure - Risk/Return Detail Data {Elements} - Calvert Short Duration Income Fund - Institutional link:presentationLink link:calculationLink link:definitionLink 000091 - Document - Risk/Return Summary {Unlabeled} - Calvert Government Fund - Institutional link:presentationLink link:calculationLink link:definitionLink 000092 - Schedule - Shareholder Fees {- Calvert Government Fund Class I} link:presentationLink link:calculationLink link:definitionLink 000093 - Schedule - Annual Fund Operating Expenses {- Calvert Government Fund Class I} link:presentationLink link:calculationLink link:definitionLink 000094 - Schedule - Expense Example {Transposed} {- Calvert Government Fund Class I} link:presentationLink link:calculationLink link:definitionLink 000095 - Schedule - Expense Example, No Redemption {Transposed} {- Calvert Government Fund Class I} link:presentationLink link:calculationLink link:definitionLink 000096 - Schedule - Annual Total Returns - Calvert Government Fund Class I [BarChart] link:presentationLink link:calculationLink link:definitionLink 000097 - Schedule - Average Annual Total Returns {Transposed} {- Calvert Government Fund Class I} link:presentationLink link:calculationLink link:definitionLink 000098 - Document - Risk/Return Detail {Unlabeled} - Calvert Government Fund Class I link:presentationLink link:calculationLink link:definitionLink 000099 - Disclosure - Risk/Return Detail Data {Elements} - Calvert Government Fund - Institutional link:presentationLink link:calculationLink link:definitionLink 000101 - Document - Risk/Return Summary {Unlabeled} - Calvert High Yield Bond Fund - Institutional link:presentationLink link:calculationLink link:definitionLink 000102 - Schedule - Shareholder Fees {- Calvert High Yield Bond Fund Class I} link:presentationLink link:calculationLink link:definitionLink 000103 - Schedule - Annual Fund Operating Expenses {- Calvert High Yield Bond Fund Class I} link:presentationLink link:calculationLink link:definitionLink 000104 - Schedule - Expense Example {Transposed} {- Calvert High Yield Bond Fund Class I} link:presentationLink link:calculationLink link:definitionLink 000105 - Schedule - Expense Example, No Redemption {Transposed} {- Calvert High Yield Bond Fund Class I} link:presentationLink link:calculationLink link:definitionLink 000106 - Schedule - Annual Total Returns - Calvert High Yield Bond Fund Class I [BarChart] link:presentationLink link:calculationLink link:definitionLink 000107 - Schedule - Average Annual Total Returns {Transposed} {- Calvert High Yield Bond Fund Class I} link:presentationLink link:calculationLink link:definitionLink 000108 - Document - Risk/Return Detail {Unlabeled} - Calvert High Yield Bond Fund Class I link:presentationLink link:calculationLink link:definitionLink 000109 - Disclosure - Risk/Return Detail Data {Elements} - Calvert High Yield Bond Fund - Institutional link:presentationLink link:calculationLink link:definitionLink 000111 - Document - Risk/Return Summary {Unlabeled} - Calvert Income Fund - Class R link:presentationLink link:calculationLink link:definitionLink 000112 - Schedule - Shareholder Fees {- Calvert Income Fund Class R} link:presentationLink link:calculationLink link:definitionLink 000113 - Schedule - Annual Fund Operating Expenses {- Calvert Income Fund Class R} link:presentationLink link:calculationLink link:definitionLink 000114 - Schedule - Expense Example {Transposed} {- Calvert Income Fund Class R} link:presentationLink link:calculationLink link:definitionLink 000115 - Schedule - Expense Example, No Redemption {Transposed} {- Calvert Income Fund Class R} link:presentationLink link:calculationLink link:definitionLink 000116 - Schedule - Annual Total Returns - Calvert Income Fund Class R [BarChart] link:presentationLink link:calculationLink link:definitionLink 000117 - Schedule - Average Annual Total Returns {Transposed} {- Calvert Income Fund Class R} link:presentationLink link:calculationLink link:definitionLink 000118 - Document - Risk/Return Detail {Unlabeled} - Calvert Income Fund Class R link:presentationLink link:calculationLink link:definitionLink 000119 - Disclosure - Risk/Return Detail Data {Elements} - Calvert Income Fund - Class R link:presentationLink link:calculationLink link:definitionLink