XML 59 R46.htm IDEA: XBRL DOCUMENT v3.20.2

Investments Accounted for by the Equity Method and Variable Interest Entities - DGPV Holdco Consolidation (Details) $ in Millions		9 Months Ended
	Nov. 02, 2020 USD ($) project fund MW	Sep. 30, 2020 USD ($) MW	Sep. 30, 2019 USD ($)
Schedule of Equity Method Investments [Line Items]
Cash consideration to acquire membership interests | $		$ 70	$ 0
DGPV Holdco 3
Schedule of Equity Method Investments [Line Items]
Power generation capacity, megawatts | MW		113
DGPV Holdco 3 | Subsequent Event
Schedule of Equity Method Investments [Line Items]
Cash consideration to acquire membership interests | $	$ 44
Number of tax equity funds | fund	7
Number of solar projects | project	172
Power generation capacity, megawatts | MW	286

X

- Definition

Number of Solar Projects

+ References

No definition available.

+ Details

Name:	cwen_NumberOfSolarProjects
Namespace Prefix:	cwen_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of Tax Equity Funds

+ References

No definition available.

+ Details

Name:	cwen_NumberOfTaxEquityFunds
Namespace Prefix:	cwen_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Power Generation Capacity, Megawatts

+ References

No definition available.

+ Details

Name:	cwen_PowerGenerationCapacityMegawatts
Namespace Prefix:	cwen_
Data Type:	num:powerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585

+ Details

Name:	us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

X

- Details

Name:	srt_ConsolidatedEntitiesAxis=cwen_DGPVHoldco3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: