v3.8.0.1

Organization and Limited Liability Company Matters (Narrative) (Details) - USD ($)		230 Months Ended
	Nov. 30, 2000	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Organization and Limited Liability Company Matters [Abstract]
Business cessation date		Dec. 31, 2019
Contributions received	$ 135,700,000
Contributions Units received	13,570,188
Contributions of capital, initial member	$ 500
Members capital account, Units issued		13,560,188	13,560,188
Members capital account, Units outstanding		13,560,188	13,560,188	13,560,188
Capital investment, AFS	$ 100

Number of common units issued of limited liability company (LLC).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

+ Details

Name:	us-gaap_CommonUnitIssued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of common units of ownership outstanding of a limited liability company (LLC).

+ References

No definition available.

+ Details

Name:	us-gaap_CommonUnitOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Date the limited liability company (LLC) or limited partnership (LP) will cease to exist, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

+ Details

Name:	us-gaap_LimitedLiabilityCompanyOrLimitedPartnershipBusinessCessationDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash inflow associated with the amount received by a corporation from a shareholder during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585

+ Details

Name:	us-gaap_ProceedsFromContributedCapital
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Capital Contributions, Additions

+ References

No definition available.

+ Details

Name:	zzhjb_CapitalContributionsAdditions
Namespace Prefix:	zzhjb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Capital Contributions, Initial.

+ References

No definition available.

+ Details

Name:	zzhjb_CapitalContributionsInitial
Namespace Prefix:	zzhjb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Units contributed by members during the year. Units represent shares of ownership in the Limited Liability Company.

+ References

No definition available.

+ Details

Name:	zzhjb_MembersCapitalAccountUnitsContributed
Namespace Prefix:	zzhjb_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

ATEL CAPITAL EQUIPMENT FUND VIII LLC 10-Q