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Debt and Credit Facilities (Tables)
12 Months Ended
Dec. 31, 2017
Debt Disclosure [Abstract]  
Schedule of Debt
The following table shows the significant components of Current maturities of Long-Term Debt on the 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

 
December 31, 2017

Unsecured Debt
 
 
 
 
 
Duke Energy (Parent)
June 2018
 
6.250
%
 
$
250

Duke Energy (Parent)
June 2018
 
2.100
%
 
500

Piedmont
December 2018
 
2.286
%
(b) 
250

First Mortgage Bonds
 
 
 
 
 
Duke Energy Carolinas
January 2018
 
5.250
%
 
400

Duke Energy Carolinas
April 2018
 
5.100
%
 
300

Duke Energy Florida
June 2018
 
5.650
%
 
500

Duke Energy Carolinas
November 2018
 
7.000
%
 
500

Other(a)
 
 
 
 
544

Current maturities of long-term debt
 
 
 
 
$
3,244


(a)
Includes capital lease obligations, amortizing debt and small bullet maturities.
(b)
Debt has a floating interest rate.
The following tables summarize outstanding debt.
 
December 31, 2017
 
Weighted

 
 
 
 
 
 
 
 
 
 
Average

 
 
Duke

 
Duke

Duke

Duke

Duke

 
 
Interest

 
Duke

Energy

Progress

Energy

Energy

Energy

Energy

 
(in millions)
Rate

 
Energy

Carolinas

Energy

Progress

Florida

Ohio

Indiana

Piedmont

Unsecured debt, maturing 2018-2073
4.17
%
 
$
20,409

$
1,150

$
3,950

$

$
550

$
900

$
411

$
2,050

Secured debt, maturing 2018-2037
3.15
%
 
4,458

450

1,757

300

1,457




First mortgage bonds, maturing 2018-2047(a)
4.51
%
 
23,529

7,959

11,801

6,776

5,025

1,100

2,669


Capital leases, maturing 2018-2051(b)
4.55
%
 
1,000

61

269

139

129

5

11


Tax-exempt bonds, maturing 2019-2041(c)
3.23
%
 
941

243

48

48


77

572


Notes payable and commercial paper(d)
1.57
%
 
2,788








Money pool/intercompany borrowings
 
 

404

955

390


54

311

364

Fair value hedge carrying value adjustment
 
 
6

6







Unamortized debt discount and premium, net(e)
 
 
1,582

(19
)
(30
)
(16
)
(10
)
(33
)
(9
)
(1
)
Unamortized debt issuance costs(f)
 
 
(271
)
(47
)
(108
)
(40
)
(56
)
(7
)
(21
)
(12
)
Total debt
4.09
%
 
$
54,442

$
10,207

$
18,642

$
7,597

$
7,095

$
2,096

$
3,944

$
2,401

Short-term notes payable and commercial paper
 
 
(2,163
)







Short-term money pool/intercompany borrowings
 
 

(104
)
(805
)
(240
)

(29
)
(161
)
(364
)
Current maturities of long-term debt(g)
 
 
(3,244
)
(1,205
)
(771
)
(3
)
(768
)
(3
)
(3
)
(250
)
Total long-term debt(g)

 
$
49,035

$
8,898

$
17,066

$
7,354

$
6,327

$
2,064

$
3,780

$
1,787

(a)
Substantially all electric utility property is mortgaged under mortgage bond indentures.
(b)
Duke Energy includes $81 million and $603 million of capital lease purchase accounting adjustments related to Duke Energy Progress and Duke Energy Florida, respectively, related to power purchase agreements that are not accounted for as capital leases in their respective financial statements because of grandfathering provisions in GAAP.
(c)
Substantially all tax-exempt bonds are secured by first mortgage bonds or letters of credit.
(d)
Includes $625 million that was classified as Long-Term Debt on the Consolidated Balance Sheets due to the existence of long-term credit facilities that backstop these commercial paper balances, along with Duke Energy’s ability and intent to refinance these balances on a long-term basis. The weighted average days to maturity for Duke Energy's commercial paper program was 14 days.
(e)
Duke Energy includes $1,509 million and $176 million in purchase accounting adjustments related to Progress Energy and Piedmont, respectively.
(f)
Duke Energy includes $47 million in purchase accounting adjustments primarily related to the merger with Progress Energy.
(g)
Refer to Note 17 for additional information on amounts from consolidated VIEs.
 
December 31, 2016
 
Weighted

 
 
 
 
 
 
 
 
 
 
Average

 
 
Duke

 
Duke

Duke

Duke

Duke

 
 
Interest

 
Duke

Energy

Progress

Energy

Energy

Energy

Energy

 
(in millions)
Rate

 
Energy

Carolinas

Energy

Progress

Florida

Ohio

Indiana

Piedmont

Unsecured debt, maturing 2017-2073
4.30
%
 
$
17,812

$
1,150

$
3,551

$

$
150

$
810

$
415

$
1,835

Secured debt, maturing 2017-2037
2.60
%
 
3,909

425

1,819

300

1,519




First mortgage bonds, maturing 2017-2046(a)
4.61
%
 
21,879

7,410

10,800

6,425

4,375

1,000

2,669


Capital leases, maturing 2018-2051(b)
4.48
%
 
1,100

22

285

142

143

7

11


Tax-exempt bonds, maturing 2017-2041(c)
2.84
%
 
1,053

355

48

48


77

572


Notes payable and commercial paper(d)
1.01
%
 
3,112








Money pool/intercompany borrowings(e)
 
 

300

1,902

150

297

41

150


Fair value hedge carrying value adjustment
 
 
6

6







Unamortized debt discount and premium, net(f)
 
 
1,753

(20
)
(31
)
(16
)
(10
)
(28
)
(9
)
(1
)
Unamortized debt issuance costs(g)
 
 
(242
)
(45
)
(104
)
(38
)
(52
)
(7
)
(22
)
(13
)
Total debt
4.07
%
 
$
50,382

$
9,603

$
18,270

$
7,011

$
6,422

$
1,900

$
3,786

$
1,821

Short-term notes payable and commercial paper
 
 
(2,487
)







Short-term money pool/intercompany borrowings
 
 


(729
)

(297
)
(16
)


Current maturities of long-term debt(h)
 
 
(2,319
)
(116
)
(778
)
(452
)
(326
)
(1
)
(3
)
(35
)
Total long-term debt(h)

 
$
45,576

$
9,487

$
16,763

$
6,559

$
5,799

$
1,883

$
3,783

$
1,786


(a)
Substantially all electric utility property is mortgaged under mortgage bond indentures.
(b)
Duke Energy includes $98 million and $670 million of capital lease purchase accounting adjustments related to Duke Energy Progress and Duke Energy Florida, respectively, related to power purchase agreements that are not accounted for as capital leases in their respective financial statements because of grandfathering provisions in GAAP.
(c)
Substantially all tax-exempt bonds are secured by first mortgage bonds or letters of credit.
(d)
Includes $625 million that was classified as Long-Term Debt on the Consolidated Balance Sheets due to the existence of long-term credit facilities that backstop these commercial paper balances, along with Duke Energy’s ability and intent to refinance these balances on a long-term basis. The weighted average days to maturity for Duke Energy and Piedmont's commercial paper programs were 14 days and eight days, respectively.
(e)
Progress Energy amount includes a $1 billion intercompany loan related to the sale of the International Disposal Group. See Note 2 for further discussion of the sale.
(f)
Duke Energy includes $1,653 million and $197 million purchase accounting adjustments related to the mergers with Progress Energy and Piedmont, respectively.
(g)
Duke Energy includes $53 million in purchase accounting adjustments primarily related to the merger with Progress Energy.
(h)
Refer to Note 17 for additional information on amounts from consolidated VIEs.
The following tables show short-term obligations classified as long-term debt.
 
December 31, 2017
 
 
 
Duke

 
Duke

 
Duke

 
Duke

 
Duke

 
Energy

 
Energy

 
Energy

 
Energy

(in millions)
Energy

 
Carolinas

 
Progress

 
Ohio

 
Indiana

Tax-exempt bonds
$
312

 
$

 
$

 
$
27

 
$
285

Commercial paper(a)
625

 
300

 
150

 
25

 
150

Total
$
937


$
300

 
$
150


$
52


$
435

 
December 31, 2016
 
 
 
Duke

 
Duke

 
Duke

 
Duke

 
Duke

 
Energy

 
Energy

 
Energy

 
Energy

(in millions)
Energy

 
Carolinas

 
Progress

 
Ohio

 
Indiana

Tax-exempt bonds
$
347

 
$
35

 
$

 
$
27

 
$
285

Commercial paper(a)
625

 
300

 
150

 
25

 
150

Total
$
972


$
335


$
150

 
$
52


$
435

(a)
Progress Energy amounts are equal to Duke Energy Progress amounts.
Schedule of Maturities of Long-term Debt
The following table shows the annual maturities of long-term debt for the next five years and thereafter. Amounts presented exclude short-term notes payable and commercial paper and money pool borrowings for the Subsidiary Registrants.
 
December 31, 2017
 
 
 
Duke

 
 
 
Duke

 
Duke

 
Duke

 
Duke

 
 
 
Duke

 
Energy

 
Progress

 
Energy

 
Energy

 
Energy

 
Energy

 
 
(in millions)
Energy(a)

 
Carolinas

 
Energy

 
Progress

 
Florida

 
Ohio

 
Indiana

 
Piedmont

2018
$
3,244

 
$
1,205

 
$
771

 
$
3

 
$
768

 
$
3

 
$
3

 
$
250

2019
3,563

 
6

 
2,191

 
903

 
490

 
548

 
61

 

2020
3,699

 
906

 
871

 
304

 
568

 

 
502

 

2021
3,760

 
502

 
1,472

 
602

 
371

 
48

 
69

 
159

2022
3,010

 
302

 
1,176

 
653

 
74

 
23

 
243

 

Thereafter
33,271

 
7,182

 
11,356

 
4,892

 
4,824

 
1,445

 
2,905

 
1,628

Total long-term debt, including current maturities
$
50,547


$
10,103


$
17,837


$
7,357


$
7,095


$
2,067


$
3,783

 
$
2,037

(a)
Excludes $1,732 million in purchase accounting adjustments related to the Progress Energy merger and the Piedmont acquisition.
Schedule of Long-term Debt Instruments
The following tables summarize significant debt issuances (in millions).
 
 
 
 
 
Year Ended December 31, 2017
 
 
 
 
 
 
 
Duke

 
Duke

 
Duke

 
Duke

 
Duke

 
Maturity
 
Interest

 
Duke

 
Energy

 
Energy

 
Energy

 
Energy

 
Energy

Issuance Date
Date
 
Rate

 
Energy

 
(Parent)

 
Carolinas

 
Progress

 
Florida

 
Ohio

Unsecured Debt
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
April 2017(a)
April 2025
 
3.364
%
 
$
420

 
$
420

 
$

 
$

 
$

 
$

June 2017(b)
June 2020
 
2.100
%
 
330

 
330

 

 

 

 

August 2017(c)
August 2022
 
2.400
%
 
500

 
500

 

 

 

 

August 2017(c)
August 2027
 
3.150
%
 
750

 
750

 

 

 

 

August 2017(c)
August 2047
 
3.950
%
 
500

 
500

 

 

 

 

December 2017(d)
December 2019
(k) 
2.100
%
 
400

 

 

 

 
400

 

Secured Debt
 
 


 


 


 


 


 


 
 
February 2017(e)
June 2034
 
4.120
%
 
587

 

 

 

 

 

August 2017(f)
December 2036
 
4.110
%
 
233

 

 

 

 

 

First Mortgage Bonds
 
 

 


 
 
 
 
 
 
 

 
 
January 2017(g)
January 2020
 
1.850
%
 
250

 

 

 

 
250

 

January 2017(g)
January 2027
 
3.200
%
 
650

 

 

 

 
650

 

March 2017(h)
June 2046
 
3.700
%
 
100

 

 

 

 

 
100

September 2017(i)
September 2020
 
1.500
%
(l) 
300

 

 

 
300

 

 

September 2017(i)
September 2047
 
3.600
%
 
500

 

 

 
500

 

 

November 2017(j)
December 2047
 
3.700
%
 
550

 

 
550

 

 

 

Total issuances
 
 
 
 
$
6,070

 
$
2,500


$
550

 
$
800

 
$
1,300

 
$
100

(a)
Proceeds were used to refinance $400 million of unsecured debt at maturity and to repay a portion of outstanding commercial paper.
(b)
Debt issued to repay a portion of outstanding commercial paper.
(c)
Debt issued to repay at maturity $700 million of unsecured debt, to repay outstanding commercial paper and for general corporate purposes.
(d)
Debt issued to fund storm restoration costs related to Hurricane Irma and for general corporate purposes.
(e)
Portfolio financing of four Texas and Oklahoma wind facilities. Duke Energy pledged substantially all of the assets of these wind facilities and is nonrecourse to Duke Energy. Proceeds were used to reimburse Duke Energy for a portion of previously funded construction expenditures.
(f)
Portfolio financing of eight solar facilities located in California, Colorado and New Mexico. Duke Energy pledged substantially all of the assets of these solar facilities and is nonrecourse to Duke Energy. Proceeds were used to reimburse Duke Energy for a portion of previously funded construction expenditures.
(g)
Debt issued to fund capital expenditures for ongoing construction and capital maintenance, to repay a $250 million aggregate principal amount of bonds at maturity and for general corporate purposes.
(h)
Proceeds were used to fund capital expenditures for ongoing construction, capital maintenance and for general corporate purposes.
(i)
Debt issued to repay at maturity a $200 million aggregate principal amount of bonds at maturity, pay down intercompany short-term debt and for general corporate purposes, including capital expenditures.
(j)
Debt issued to refinance $400 million aggregate principal amount of bonds due January 2018, pay down intercompany short-term debt and for general corporate purposes.
(k)
Principal balance will be repaid in equal quarterly installments beginning in March 2018.
(l)
Debt issuance has a floating interest rate.
 
 
 
 
 
Year Ended December 31, 2016
 
 
 
 
 
 
 
Duke

 
Duke

 
Duke

 
Duke

 
Duke

 
Duke

 
Maturity
 
Interest

 
Duke

 
Energy

 
Energy

 
Energy

 
Energy

 
Energy

 
Energy

Issuance Date
Date
 
Rate

 
Energy

 
(Parent)

 
Carolinas

 
Progress

 
Florida

 
Ohio

 
Indiana

Unsecured Debt
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
April 2016(a)
April 2023
 
2.875
%
 
$
350

 
$
350

 
$

 
$

 
$

 
$

 
$

August 2016(b)
September 2021
 
1.800
%
 
750

 
750

 

 

 

 

 

August 2016(b)
September 2026
 
2.650
%
 
1,500

 
1,500

 

 

 

 

 

August 2016(b)
September 2046
 
3.750
%
 
1,500

 
1,500

 

 

 

 

 

Secured Debt
 
 
 
 
 
 
 
 
 
 
 
 
 
 


 
 
June 2016(c)
March 2020
 
1.196
%
 
183

 

 

 

 
183

 

 

June 2016(c)
September 2022
 
1.731
%
 
150

 

 

 

 
150

 

 

June 2016(c)
September 2029
 
2.538
%
 
436

 

 

 

 
436

 

 

June 2016(c)
March 2033
 
2.858
%
 
250

 

 

 

 
250

 

 

June 2016(c)
September 2036
 
3.112
%
 
275

 

 

 

 
275

 

 

August 2016(d)
June 2034
 
2.747
%
(i) 
228

 

 

 

 

 

 

August 2016(d)
June 2020
 
2.747
%
(i) 
105

 

 

 

 

 

 

First Mortgage Bonds
 
 
 
 
 
 
 
 
 
 
 
 
 
 


 
 
March 2016(e)
March 2023
 
2.500
%
 
500

 

 
500

 

 

 

 

March 2016(e)
March 2046
 
3.875
%
 
500

 

 
500

 

 

 

 

May 2016(f)
May 2046
 
3.750
%
 
500

 

 

 

 

 

 
500

June 2016(e)
June 2046
 
3.700
%
 
250

 

 

 

 

 
250

 

September 2016(g)
October 2046
 
3.400
%
 
600

 

 

 

 
600

 

 

September 2016(e)
October 2046
 
3.700
%
 
450

 

 

 
450

 

 

 

November 2016(h)
December 2046
 
2.950
%
 
600

 

 
600

 

 

 

 

Total issuances
 
 
 
 
$
9,127

 
$
4,100


$
1,600

 
$
450


$
1,894


$
250

 
$
500

(a)
Proceeds were used to pay down outstanding commercial paper and for general corporate purposes.
(b)
Proceeds were used to finance a portion of the Piedmont acquisition. The $4.9 billion Bridge Facility was terminated following the issuance of this debt. See Note 2 for additional information on the Piedmont acquisition.
(c)
DEFPF issued nuclear-asset recovery bonds and used the proceeds to acquire nuclear-asset recovery property from its parent, Duke Energy Florida. The nuclear-asset recovery bonds are payable only from and secured by the nuclear asset-recovery property. DEFPF is consolidated for financial reporting purposes; however, the nuclear asset-recovery bonds do not constitute a debt, liability or other legal obligation of, or interest in, Duke Energy Florida or any of its affiliates other than DEFPF. The assets of DEFPF, including the nuclear-asset recovery property, are not available to pay creditors of Duke Energy Florida or any of its affiliates. Duke Energy Florida used the proceeds from the sale to repay short-term borrowings under the intercompany money pool borrowing arrangement and make an equity distribution of $649 million to the ultimate parent, Duke Energy (Parent), which repaid short-term borrowings. The nuclear-asset recovery bonds are sequential pay amortizing bonds. The maturity date above represents the scheduled final maturity date for the bonds. See Notes 4 and 17 for additional information.
(d)
Emerald State Solar, LLC, an indirect wholly owned subsidiary of Duke Energy entered into portfolio financing of approximately 22 North Carolina solar facilities. Tranche A of $228 million is secured by substantially all of the assets of the solar facilities and is nonrecourse to Duke Energy. Tranche B of $105 million is secured by an Equity Contribution Agreement with Duke Energy. Proceeds were used to reimburse Duke Energy for a portion of previously funded construction expenditures related to the Emerald State Solar, LLC portfolio. The initial interest rate on the loans was six months London Interbank Offered Rate (LIBOR) plus an applicable margin of 1.75 percent plus a 0.125 percent increase every three years thereafter. In connection with this debt issuance, Emerald State Solar, LLC entered into two interest rate swaps to convert the substantial majority of the loan interest payments from variable rates to fixed rates of approximately 1.81 percent for Tranche A and 1.38 percent for Tranche B, plus the applicable margin. See Note 14 for further information on the notional amounts of the interest rate swaps.
(e)
Proceeds were used to fund capital expenditures for ongoing construction, capital maintenance and for general corporate purposes.
(f)
Proceeds were used to repay $325 million of unsecured debt due June 2016, $150 million of first mortgage bonds due July 2016 and for general corporate purposes.
(g)
Proceeds were used to fund capital expenditures for ongoing construction, capital maintenance, to repay short-term borrowings under the intercompany money pool borrowing arrangement and for general corporate purposes.
(h)
Proceeds were used to repay at maturity $350 million aggregate principal amount of certain bonds due December 2016, as well as to fund capital expenditures for ongoing construction and capital maintenance and for general corporate purposes.
(i)
Debt issuance has a floating interest rate.

Schedule Of Line Of Credit Facilities
 
December 31, 2017
 
 
 
 
 
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

 
$
2,850

 
$
1,350

 
$
1,250

 
$
800

 
$
450

 
$
600

 
$
700

Reduction to backstop issuances
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial paper(b)
(1,799
)
 
(561
)
 
(371
)
 
(314
)
 

 
(45
)
 
(260
)
 
(248
)
Outstanding letters of credit
(63
)
 
(54
)
 
(4
)
 
(2
)
 
(1
)
 

 

 
(2
)
Tax-exempt bonds
(81
)
 

 

 

 

 

 
(81
)
 

Coal ash set-aside
(500
)
 

 
(250
)
 
(250
)
 

 

 

 

Available capacity
$
5,557


$
2,235


$
725


$
684


$
799


$
405


$
259

 
$
450


(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 Consolidated Balance Sheets.