Line of Credit Facility, Increase in Borrowing Capacity

No definition available.

Name:	nrg_LineOfCreditFacilityIncreaseInBorrowingCapacity
Namespace Prefix:	nrg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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Balance Type:	na
Period Type:	instant

- 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

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+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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+ Details

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Balance Type:	credit
Period Type:	instant

- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Balance Type:
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- Details

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Long-term Debt and Finance Leases - Revolving Credit Facility, Bilateral Letter of Credit Facilities, Receivables Securitization Facilities and Dunkirk Bonds (Details) - USD ($)	Oct. 17, 2023	May 30, 2023	May 19, 2023	Mar. 13, 2023	Feb. 14, 2023	Oct. 31, 2023	Sep. 30, 2023	Jun. 22, 2023	Jun. 21, 2023	Apr. 03, 2023	Dec. 31, 2022
Line of Credit Facility [Line Items]
Borrowings outstanding							$ 11,863,000,000				$ 8,100,000,000
Bilateral Credit Facilities \| Secured Debt
Line of Credit Facility [Line Items]
Increase to existing revolving commitments		$ 100,000,000	$ 25,000,000
Bilateral Credit Facilities \| Subsequent Event \| Secured Debt
Line of Credit Facility [Line Items]
Increase to existing revolving commitments	$ 50,000,000
Dunkirk Bonds
Line of Credit Facility [Line Items]
Borrowings outstanding										$ 59,000,000
Interest rate, stated percentage										4.25%
Revolving Credit Facility \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Increase to existing revolving commitments				$ 45,000,000	$ 600,000,000
Outstanding borrowing							300,000,000
Revolving Credit Facility \| Revolving Credit Facility \| Subsequent Event
Line of Credit Facility [Line Items]
Outstanding borrowing						$ 100,000,000
Revolving Credit Facility \| Receivables Facility
Line of Credit Facility [Line Items]
Outstanding borrowing							$ 0
Revolving credit commitments								$ 1,400,000,000	$ 1,000,000,000
Letter of Credit \| Bilateral Credit Facilities \| Subsequent Event \| Secured Debt
Line of Credit Facility [Line Items]
Revolving credit commitments	$ 850,000,000