XML 93 R70.htm IDEA: XBRL DOCUMENT v3.25.0.1

Nature of Business (Details) customer in Millions	12 Months Ended
	Dec. 31, 2024 customer GW
Business Acquisition [Line Items]
Generation capacity (in MW) | GW	13
Residential Customer
Business Acquisition [Line Items]
Customers served	8
Retail Energy Customer
Business Acquisition [Line Items]
Customers served	6
Home
Business Acquisition [Line Items]
Customers served	2

X

- Definition

Number of Customers

+ References

No definition available.

+ Details

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Namespace Prefix:	nrg_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The generation capacity of the entity's power generation facilities as of the balance sheet date, expressed in megawatts.

+ References

No definition available.

+ Details

Name:	nrg_PowerGenerationCapacityMegawatts
Namespace Prefix:	nrg_
Data Type:	dtr-types1:powerItemType
Balance Type:	na
Period Type:	instant

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-5

+ Details

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X

- Details

Name:	srt_MajorCustomersAxis=nrg_ResidentialCustomerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MajorCustomersAxis=nrg_RetailEnergyCustomerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MajorCustomersAxis=nrg_HomeCustomerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: