XML 9 R3.htm IDEA: XBRL DOCUMENT v3.22.0.1
Label Element Value
Risk Return Abstract rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName CASH ACCOUNT TRUST
Prospectus Date rr_ProspectusDate Aug. 01, 2021
Document Creation Date dei_DocumentCreationDate Mar. 04, 2022