Employee Benefit Plans (Expected Benefit Payments) (Details) $ in Millions	Dec. 31, 2025 USD ($)
Pension Plan
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2026	$ 596
2027	578
2028	565
2029	540
2030	514
2031-2035	2,319
Pension Plan \| Duke Energy Carolinas
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2026	157
2027	150
2028	145
2029	135
2030	126
2031-2035	540
Pension Plan \| Progress Energy
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2026	176
2027	173
2028	169
2029	165
2030	159
2031-2035	740
Pension Plan \| Duke Energy Progress
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2026	89
2027	86
2028	81
2029	77
2030	73
2031-2035	324
Pension Plan \| Duke Energy Florida
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2026	86
2027	87
2028	87
2029	87
2030	86
2031-2035	412
Pension Plan \| Duke Energy Ohio
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2026	30
2027	29
2028	29
2029	28
2030	28
2031-2035	124
Pension Plan \| Duke Energy Indiana
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2026	44
2027	43
2028	43
2029	43
2030	42
2031-2035	198
Pension Plan \| Piedmont
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2026	19
2027	18
2028	17
2029	16
2030	16
2031-2035	71
Other Post-Retirement Benefit Plans
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2026	54
2027	44
2028	38
2029	34
2030	31
2031-2035	121
Other Post-Retirement Benefit Plans \| Duke Energy Carolinas
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2026	13
2027	10
2028	8
2029	7
2030	6
2031-2035	20
Other Post-Retirement Benefit Plans \| Progress Energy
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2026	18
2027	16
2028	15
2029	14
2030	14
2031-2035	58
Other Post-Retirement Benefit Plans \| Duke Energy Progress
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2026	11
2027	10
2028	9
2029	8
2030	8
2031-2035	35
Other Post-Retirement Benefit Plans \| Duke Energy Florida
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2026	7
2027	7
2028	6
2029	6
2030	5
2031-2035	23
Other Post-Retirement Benefit Plans \| Duke Energy Ohio
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2026	3
2027	3
2028	2
2029	2
2030	2
2031-2035	6
Other Post-Retirement Benefit Plans \| Duke Energy Indiana
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2026	4
2027	3
2028	2
2029	2
2030	2
2031-2035	7
Other Post-Retirement Benefit Plans \| Piedmont
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2026	2
2027	2
2028	2
2029	2
2030	2
2031-2035	$ 6

No definition available.

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

- Definition

Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-5

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

+ Details

Name:	us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of benefit for defined benefit plan expected to be paid in fifth fiscal year following current fiscal year.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of benefit for defined benefit plan expected to be paid in fourth fiscal year following current fiscal year.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of benefit for defined benefit plan expected to be paid in third fiscal year following current fiscal year.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of benefit for defined benefit plan expected to be paid in second fiscal year following current fiscal year.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=duk_DukeEnergyCarolinasMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=duk_ProgressEnergyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=duk_DukeEnergyProgressMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=duk_DukeEnergyFloridaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=duk_DukeEnergyOhioMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=duk_DukeEnergyIndianaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=duk_PiedmontNaturalGasMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RetirementPlanTypeAxis=us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: