000013 - Schedule - Annual Fund Operating Expenses - calvert Preferred Securities Fund
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000023 - Schedule - Annual Fund Operating Expenses
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000011 - Document - Risk/Return Summary {Unlabeled} - calvert Preferred Securities Fund
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000012 - Schedule - Shareholder Fees - calvert Preferred Securities Fund
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000014 - Schedule - Expense Example {Transposed} - calvert Preferred Securities Fund
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000015 - Schedule - Expense Example, No Redemption {Transposed} - calvert Preferred Securities Fund
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000016 - Schedule - Annual Total Returns - calvert Preferred Securities Fund
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000017 - Schedule - Average Annual Total Returns {Transposed} - calvert Preferred Securities Fund
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000021 - Document - Risk/Return Summary {Unlabeled}
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000022 - Schedule - Shareholder Fees
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000024 - Schedule - Expense Example {Transposed}
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000025 - Schedule - Expense Example, No Redemption {Transposed}
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000026 - Schedule - Annual Total Returns
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000027 - Schedule - Average Annual Total Returns {Transposed}
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