Former General Partners' Capital Account (Details) (USD $)	Jun. 30, 2012	Dec. 31, 2011	Dec. 31, 1993	May 26, 1993
Former General Partners' Capital Accounts (Textual) [Abstract]
Reallocation of former general partners' deficit capital	$ (840,229)	$ (840,229)	$ 840,229	$ 840,229

The reallocation of the former general partners' deficit capital account to the limited partners capital account.

No definition available.

Name:	zzdd_ReallocationOfFormerGeneralPartnersDeficitCapital
Namespace Prefix:	zzdd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant