"成本明细表" can be translated into English as "Cost Breakdown Sheet" or "Detailed Cost Statement".
"Cost Breakdown Sheet" is commonly used to refer to a document that lists and categorizes the various components of a cost, providing a detailed breakdown.
"Detailed Cost Statement" emphasizes the detailed nature of the statement, showing a comprehensive list of costs.
Both expressions are appropriate and can be used depending on the specific context and the level of detail required.