Debt and Credit Facilities (Tables)

3 Months Ended

Mar. 31, 2016

Debt Disclosure [Abstract]

Schedule Of Debt

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, 2016
Unsecured Debt
Duke Energy Indiana	June 2016	6.050	%	$	325
Duke Energy (Parent)	November 2016	2.150	%	500
First Mortgage Bonds
Duke Energy Indiana	July 2016	0.937	%	150
Duke Energy Carolinas	December 2016	1.750	%	350
Duke Energy Progress	March 2017	0.836	%	250
Tax-exempt Bonds
Duke Energy Carolinas	February 2017	3.600	%	77
Duke Energy Ohio(a)	August 2027	1.266	%	50
Other				373
Current maturities of long-term debt				$	2,075

(a) Represents Duke Energy Kentucky's bonds with a mandatory put in December 2016.

Schedule Of Line Of Credit Facilities

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

	March 31, 2016
				Duke			Duke			Duke			Duke			Duke			Duke
	Duke			Energy			Energy			Energy			Energy			Energy			Energy
(in millions)	Energy			(Parent)			Carolinas			Progress			Florida			Ohio			Indiana
Facility size(a)	$	7,500		$	3,475		$	800		$	1,000		$	1,200		$	425		$	600
Reduction to backstop issuances
Commercial paper(b)	(2,980		)	(1,816		)	(300		)	(205		)	(480		)	(29		)	(150		)
Outstanding letters of credit	(79		)	(72		)	(4		)	(2		)	(1		)	—			—
Tax-exempt bonds	(116		)	—			(35		)	—			—			—			(81		)
Coal ash set-aside	(500		)	—			(250		)	(250		)	—			—			—
Available capacity	$	3,825		$	1,587		$	211		$	543		$	719		$	396		$	369

(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 in the Condensed Consolidated Balance Sheets.

Schedule of Long-term Debt Instruments [Table Text Block]

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

				Three Months Ended
				March 31, 2016
						Duke
	Maturity	Interest		Duke		Energy
Issuance Date	Date	Rate		Energy		Carolinas
First Mortgage Bonds
March 2016(a)	March 2023	2.500	%	$	500	$	500
March 2016(a)	March 2046	3.875	%	500		500
Total issuances				$	1,000	$	1,000

(a) Proceeds will be used to fund capital expenditures for ongoing construction, capital maintenance and for general corporate purposes.