XML 64 R52.htm IDEA: XBRL DOCUMENT
v3.21.2

Acquisitions and Dispositions - Measurement Period Adjustment (Details) - Direct Energy $ in Millions | 3 Months Ended
--- | ---
Sep. 30, 2021 USD ($)
Assets |
Goodwill | $ 11
Intangible assets, net | (32)
Total decrease in assets | (21)
Liabilities |
Accounts payable | (270)
Accrued expenses and other current liabilities | 248
Deferred income taxes | (1)
Other non-current liabilities | 2
Total decrease in liabilities | $ (21)

X
- Definition Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accounts Payable + References No definition available. + Details
Name: | nrg_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAccountsPayable
Namespace Prefix: | nrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accrued Expenses And Other Current Liabilities + References No definition available. + Details
Name: | nrg_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAccruedExpensesAndOtherCurrentLiabilities
Namespace Prefix: | nrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Assets + References No definition available. + Details
Name: | nrg_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentAssets
Namespace Prefix: | nrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deferred Tax Liability + References No definition available. + Details
Name: | nrg_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentDeferredTaxLiability
Namespace Prefix: | nrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Goodwill + References No definition available. + Details
Name: | nrg_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentGoodwill
Namespace Prefix: | nrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Liabilities + References No definition available. + Details
Name: | nrg_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentLiabilities
Namespace Prefix: | nrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Liabilities, Noncurrent + References No definition available. + Details
Name: | nrg_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentOtherLiabilitiesNoncurrent
Namespace Prefix: | nrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to intangibles acquired in connection with a business combination for which the initial accounting was incomplete. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 4A -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123413009&loc=SL65897772-128472 + Details
Name: | us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentIntangibles
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=nrg_DirectEnergyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |