Debt and Credit Facilities (Tables)

3 Months Ended

Mar. 31, 2018

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

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

				Three Months Ended March 31, 2018
						Duke		Duke
	Maturity	Interest		Duke		Energy		Energy
Issuance Date	Date	Rate		Energy		(Parent)		Carolinas
Unsecured Debt
March 2018(a)	April 2025	3.950	%	$	250	$	250	$	—
First Mortgage Bonds
March 2018(b)	March 2023	3.050	%	500		—		500
March 2018(b)	March 2048	3.950	%	500		—		500
Total issuances				$	1,250	$	250	$	1,000

(a) Debt issued to pay down short-term debt.

(b) Debt issued to repay at maturity a $300 million first mortgage bond due April 2018, pay down intercompany 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, 2018
Unsecured Debt
Duke Energy (Parent)	June 2018	6.250	%		$	250
Duke Energy (Parent)	June 2018	2.100	%		500
Piedmont	December 2018	2.821	%	(b)	250
Progress Energy	March 2019	7.050	%		450
First Mortgage Bonds
Duke Energy Carolinas	April 2018	5.100	%		300
Duke Energy Florida	June 2018	5.650	%		500
Duke Energy Carolinas	November 2018	7.000	%		500
Duke Energy Progress	January 2019	5.300	%		600
Other(a)					601
Current maturities of long-term debt					$	3,951

(a)    Includes capital lease obligations, amortizing debt and small bullet maturities.

(b)    Debt issuance has a floating interest rate.

Schedule Of Line Of Credit Facilities

The table below includes the current borrowing sublimits and available capacity under the Master Credit Facility.

	March 31, 2018
				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)	$	8,000		$	2,650		$	1,550		$	1,250		$	800		$	450		$	600		$	700
Reduction to backstop issuances
Commercial paper(b)	(2,602		)	(1,281		)	(340		)	(464		)	—			(140		)	(282		)	(95		)
Outstanding letters of credit	(59		)	(50		)	(4		)	(2		)	(1		)	—			—			(2		)
Tax-exempt bonds	(81		)	—			—			—			—			—			(81		)	—
Coal ash set-aside	(500		)	—			(250		)	(250		)	—			—			—			—
Available capacity under the Master Credit Facility	$	4,758		$	1,319		$	956		$	534		$	799		$	310		$	237		$	603

(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.