XML 10 R4.htm IDEA: XBRL DOCUMENT v3.10.0.1
Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName CASH ACCOUNT TRUST
Prospectus Date rr_ProspectusDate Aug. 01, 2018
Document Creation Date dei_DocumentCreationDate Dec. 06, 2018