v2.4.0.6

Organization and Summary of Significant Accounting Policies (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Organization and Summary of Significant Accounting Policies[Abstract]
Maximum cash balance federally insured per financial institution	$ 250,000
Total cash balance not insured by the FDIC	200,000
Value of available-for-sale securities included in company's salvage fund	700,000
Available-for-sale securities included in salvage fund maturity date	Jan. 01, 2042
Value of held-to-maturity securities included in company's salvage fund	100,000	1,100,000
Held-to-maturity securities included in salvage fund maturity date	Jun. 01, 2013
Value of capital expenditures for oil and gas properties owed to operators	40,000	40,000
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment of oil and gas properties	1,141,000	(26,000)
Percentage of cash from operations allocated to shareholders	85.00%
Percentage of cash from operations allocated to fund manager	15.00%
Percentage of available cash from dispositions allocated to shareholders	99.00%
Percentage of available cash from dispositions allocated to fund manager	1.00%
Percentage of available cash from dispositions allocated to shareholders after distributions have equaled capital contributions	85.00%
Percentage of available cash from dispositions allocated to fund manager after distributions have equaled capital contributions	15.00%
South Marsh Island 111 [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment of oil and gas properties	400,000
West Delta 68 [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment of oil and gas properties	700,000
South Marsh Island 111 and West Delta 68 [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Oil and gas properties, fair value	$ 1,700,000

Date of maturity of a debt security categorized as available-for-sale that is included in the salvage fund.

+ References

No definition available.

+ Details

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Date of maturity of a debt security categorized as held-to-maturity that is included in the salvage fund.

+ References

No definition available.

+ Details

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Namespace Prefix:	cik1295714_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The maximum cash balance that is insured by the FDIC, per financial institution.

+ References

No definition available.

+ Details

Name:	cik1295714_MaximumCashBalanceFederallyInsuredPerFinancialInstitution
Namespace Prefix:	cik1295714_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The fair value of oil and gas properties.

+ References

No definition available.

+ Details

Name:	cik1295714_OilAndGasPropertiesFairValue
Namespace Prefix:	cik1295714_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The percentage of available cash from dispositions allocated to the Fund manager until the shareholders have received total distributions equal to their capital contributions.

+ References

No definition available.

+ Details

Name:	cik1295714_PercentageOfAvailableCashFromDispositionsAllocatedToFundManager
Namespace Prefix:	cik1295714_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of available cash from dispositions allocated to the Fund manager after shareholders have received distributions equal to their capital contributions.

+ References

No definition available.

+ Details

Name:	cik1295714_PercentageOfAvailableCashFromDispositionsAllocatedToFundManagerAfterDistributionsHaveEqualedCapitalContributions
Namespace Prefix:	cik1295714_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of available cash from dispositions allocated to shareholders until the shareholders have received total distributions equal to their capital contributions.

+ References

No definition available.

+ Details

Name:	cik1295714_PercentageOfAvailableCashFromDispositionsAllocatedToShareholders
Namespace Prefix:	cik1295714_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of available cash from dispositions allocated to shareholders after shareholders have received distributions equal to their capital contributions.

+ References

No definition available.

+ Details

Name:	cik1295714_PercentageOfAvailableCashFromDispositionsAllocatedToShareholdersAfterDistributionsHaveEqualedCapitalContributions
Namespace Prefix:	cik1295714_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of cash from operations allocated to the Fund manager.

+ References

No definition available.

+ Details

Name:	cik1295714_PercentageOfCashFromOperationsAllocatedToFundManager
Namespace Prefix:	cik1295714_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of cash from operations allocated to shareholders.

+ References

No definition available.

+ Details

Name:	cik1295714_PercentageOfCashFromOperationsAllocatedToShareholders
Namespace Prefix:	cik1295714_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Value of available-for-sale securities held in the company's salvage fund.

+ References

No definition available.

+ Details

Name:	cik1295714_ValueOfAvailableForSaleSecuritiesIncludedInSalvageFund
Namespace Prefix:	cik1295714_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Value of capitalized expenditures for oil and gas properties owed to operators.

+ References

No definition available.

+ Details

Name:	cik1295714_ValueOfCapitalExpendituresForOilAndGasPropertiesOwedToOperators
Namespace Prefix:	cik1295714_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Value of held-to-maturity securities held in the company's salvage fund.

+ References

No definition available.

+ Details

Name:	cik1295714_ValueOfHeldToMaturitySecuritiesIncludedInSalvageFund
Namespace Prefix:	cik1295714_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of cash as of the balance sheet date that is not insured by the Federal Deposit Insurance Corporation.

+ References

No definition available.

+ Details

Name:	us-gaap_CashUninsuredAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

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

- Definition

The expense recorded to reduce the value of oil and gas assets consisting of proved properties and unproved properties as the estimate of future successful production from these properties is reduced.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 19

-Paragraph 27, 28, 29

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 360

-Section 35

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=6475018&loc=d3e66150-109466

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2921-110230

+ Details

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

- Details

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Data Type:	xbrli:stringItemType
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Period Type:	duration

Ridgewood Energy L Fund LLC 10-K