XML 145 R98.htm IDEA: XBRL DOCUMENT v3.20.1

Income Taxes (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($)
AMT credit carryforwards
Tax Credit Carryforward [Line Items]
Tax refund	$ 572

X

- Definition

Reclassification of Alternative Minimum Taxes, Noncurrent Deferred Tax Liability to Current Receivable

+ References

No definition available.

+ Details

Name:	duk_ReclassificationofAlternativeMinimumTaxesNoncurrentDeferredTaxLiabilitytoCurrentReceivable
Namespace Prefix:	duk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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_TaxCreditCarryforwardLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_TaxCreditCarryforwardAxis=duk_AMTCreditCarryforwardMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: