Debt and Credit Facilities (Tables)

3 Months Ended

Mar. 31, 2024

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

The following table summarizes significant debt issuances (in millions).

				Three Months Ended March 31, 2024
						Duke		Duke		Duke		Duke		Duke
	Maturity	Interest		Duke		Energy		Energy		Energy		Energy		Energy
Issuance Date	Date	Rate		Energy		(Parent)		Carolinas		Progress		Ohio		Indiana
Unsecured Debt
January 2024(a)	January 2027	4.85	%	$	600	$	600	$	—	$	—	$	—	$	—
January 2024(a)	January 2029	4.85	%	650		650		—		—		—		—
First Mortgage Bonds
January 2024(b)	January 2034	4.85	%	$	575	$	—	$	575	$	—	$	—	$	—
January 2024(b)	January 2054	5.40	%	425		—		425		—		—		—
March 2024(b)	March 2034	5.25	%	300		—		—		—		—		300
March 2024(c)	March 2034	5.10	%	500		—		—		500		—		—
March 2024(d)	March 2054	5.55	%	425		—		—		—		425		—
Total issuances				$	3,475	$	1,250	$	1,000	$	500	$	425	$	300

(a)Proceeds were used to repay the remaining $1 billion outstanding on Duke Energy (Parent)'s variable rate Term Loan Facility due March 2024, pay down a portion of short-term debt and for general corporate purposes. Duke Energy (Parent)'s Term Loan Facility was terminated in March 2024 in conjunction with the payoff of remaining borrowings.

(b)Proceeds were used to pay down a portion of short-term debt and for general company purposes.

(c)Proceeds were used to fund eligible green energy projects, pay down a portion of short-term debt and for general company purposes.

(d)Proceeds were used to pay down a portion of short-term debt and for general corporate purposes.

The following table shows the significant components of Current maturities of long-term debt on the Condensed Consolidated Balance Sheets. The Duke Energy Registrants currently anticipate satisfying these obligations with cash on hand and proceeds from additional borrowings.

(in millions)	Maturity Date	Interest Rate		March 31, 2024
Unsecured Debt
Duke Energy (Parent)	April 2024	3.750	%	$	1,000
Secured Debt
Duke Energy Florida(a)	April 2024	6.395	%	163
Duke Energy Florida(a)	April 2024	6.226	%	162
Duke Energy Carolinas(a)	January 2025	6.176	%	500
First Mortgage Bonds
Duke Energy Florida(b)	October 2073	4.922	%	200
Other(c)				249
Current maturities of long-term debt				$	2,274

(a)Debt has a floating interest rate. In April 2024, Duke Energy Florida repaid the $325 million in total borrowings outstanding under the DEFR accounts receivable securitization facility maturing in April 2024 and terminated the facility. See Note 12 for additional information.

(b)While final maturity is October 2073, these first mortgage bonds are classified as Current maturities of long-term debt on the Consolidated Balance Sheets, based on terms of the indenture, which could require repayment in less than 12 months if exercised by the bondholders.

(c)Includes finance lease obligations, amortizing debt, tax-exempt bonds with mandatory put options and small bullet maturities.

Schedule of Line of Credit Facilities

The table below includes the current borrowing sublimits and available capacity under these credit facilities.

	March 31, 2024
			Duke		Duke		Duke		Duke		Duke		Duke
	Duke		Energy		Energy		Energy		Energy		Energy		Energy
(in millions)	Energy		(Parent)		Carolinas		Progress		Florida		Ohio		Indiana		Piedmont
Facility size(a)	$	9,000	$	2,275	$	1,400	$	1,575	$	950	$	1,050	$	950	$	800
Reduction to backstop issuances
Commercial paper(b)	(3,759)		(1,309)		(355)		(904)		(66)		(331)		(286)		(508)
Outstanding letters of credit	(38)		(26)		(4)		(1)		(7)		—		—		—
Tax-exempt bonds	(81)		—		—		—		—		—		(81)		—
Available capacity under the Master Credit Facility	$	5,122	$	940	$	1,041	$	670	$	877	$	719	$	583	$	292

(a)Represents the sublimit of each borrower.

(b)Duke Energy issued $625 million of commercial paper and loaned the proceeds through the money pool to Duke Energy Carolinas, Duke Energy Progress, Duke Energy Ohio and Duke Energy Indiana. The balances are classified as Long-Term Debt Payable to Affiliated Companies on the Condensed Consolidated Balance Sheets.