Document and Entity Information	3 Months Ended
	Mar. 31, 2012	Apr. 30, 2012
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q1
Trading Symbol	ZZHJA
Entity Registrant Name	ATEL CAPITAL EQUIPMENT FUND VII LP
Entity Central Index Key	0001019542
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Entity Units Outstanding		14,985,550