Debt and Credit Facilities (Summary of Current Maturities of Long-term Debt) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Current maturities of long-term debt	$ 4,154	$ 3,387
Other
Debt Instrument [Line Items]
Current maturities of long-term debt	$ 854
Duke Energy (Parent) \| Debt Maturing April 2023, 2.875% Coupon \| Unsecured Debt
Debt Instrument [Line Items]
Interest Rate	2.875%
Current maturities of long-term debt	$ 350
Duke Energy (Parent) \| Debt Maturing June 2023, 1.938% Coupon \| Unsecured Debt
Debt Instrument [Line Items]
Interest Rate	3.469%
Current maturities of long-term debt	$ 500
Duke Energy (Parent) \| Debt Maturing October 2023, 3.950% Coupon \| Unsecured Debt
Debt Instrument [Line Items]
Interest Rate	3.95%
Current maturities of long-term debt	$ 400
Duke Energy Ohio
Debt Instrument [Line Items]
Current maturities of long-term debt	$ 475
Duke Energy Ohio \| Debt Maturing October 2023, 2.750% Coupon \| Unsecured Debt
Debt Instrument [Line Items]
Interest Rate	4.272%
Current maturities of long-term debt	$ 150
Duke Energy Ohio \| Debt Maturing September 2023, 3.800% Coupon \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest Rate	3.80%
Current maturities of long-term debt	$ 300
Duke Energy Indiana
Debt Instrument [Line Items]
Current maturities of long-term debt	$ 303	84
Duke Energy Indiana \| Debt Maturing October 2023, -% Coupon \| Unsecured Debt
Debt Instrument [Line Items]
Interest Rate	4.118%
Current maturities of long-term debt	$ 300
Duke Energy Carolinas
Debt Instrument [Line Items]
Current maturities of long-term debt	$ 1,018	362
Duke Energy Carolinas \| Debt Maturing March 2023, 2.500% Coupon \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest Rate	2.50%
Current maturities of long-term debt	$ 500
Duke Energy Carolinas \| Debt Maturing March 2023, 3.050% Coupon \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest Rate	3.05%
Current maturities of long-term debt	$ 500
Duke Energy Progress
Debt Instrument [Line Items]
Current maturities of long-term debt	$ 369	$ 556
Duke Energy Progress \| Debt Maturing September 2023, 3.375% Coupon \| First Mortgage Bonds
Debt Instrument [Line Items]
Interest Rate	3.375%
Current maturities of long-term debt	$ 300

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
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

No definition available.

+ Details

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

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19,20)
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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