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Debt and Credit Facilities | 9 Months Ended
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Sep. 30, 2018
Debt Disclosure [Abstract] |
Debt And Credit Facilities | DEBT AND CREDIT FACILITIES SUMMARY OF SIGNIFICANT DEBT ISSUANCES The following table summarizes significant debt issuances (in millions).
|  |  |  | Nine Months Ended September 30, 2018
|  |  |  |  |  | Duke |  |  | Duke |  |  | Duke |  |  | Duke |
| Maturity | Interest |  |  | Duke |  |  | Energy |  |  | Energy |  |  | Energy |  |  | Energy |
Issuance Date | Date | Rate |  |  | Energy |  |  | (Parent) |  |  | Carolinas |  |  | Progress |  |  | Florida |
Unsecured Debt |  |  |  |  |  |  |  |  |  |  |  |
March 2018(a) | April 2025 | 3.950 | % |  | $ | 250 |  |  | $ | 250 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
May 2018(b) | May 2021 | 2.819 | % |  | 500 |  |  | 500 |  |  | — |  |  | — |  |  | — |
September 2018(c) | September 2078 | 5.625 | % |  | 500 |  |  | 500 |  |  | — |  |  | — |  |  | — |
First Mortgage Bonds |  |  |  |  |  |  |  |  |  |  |  |
March 2018(d) | March 2023 | 3.050 | % |  | 500 |  |  | — |  |  | 500 |  |  | — |  |  | — |
March 2018(d) | March 2048 | 3.950 | % |  | 500 |  |  | — |  |  | 500 |  |  | — |  |  | — |
June 2018(e) | July 2028 | 3.800 | % |  | 600 |  |  | — |  |  | — |  |  | — |  |  | 600 |
June 2018(e) | July 2048 | 4.200 | % |  | 400 |  |  | — |  |  | — |  |  | — |  |  | 400 |
August 2018(f) | September 2023 | 3.375 | % |  | 300 |  |  | — |  |  | — |  |  | 300 |  |  | — |
August 2018(f) | September 2028 | 3.700 | % |  | 500 |  |  | — |  |  | — |  |  | 500 |  |  | — |
Total issuances |  |  |  | $ | 4,050 |  |  | $ | 1,250 |  |  | $ | 1,000 |  |  | $ | 800 |  |  | $ | 1,000 |
(a) | Debt issued to pay down short-term debt.
(b) | Debt issued to pay down short-term debt. Debt issuance has a floating interest rate.
(c) | Callable after September 2023 at par. Debt issued to pay down short-term debt and for general corporate purposes.
(d) | 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.
(e) | Debt issued to repay a portion of intercompany short-term debt under money-pool borrowing arrangement and for general corporate purposes.
(f) | Debt issued to repay short-term debt and for general corporate purposes.
CURRENT MATURITIES OF LONG-TERM 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 |  |  | September 30, 2018 |
Unsecured Debt |  |  |  |  |
Progress Energy | March 2019 |  | 7.050 | % |  | $ | 450 |
Duke Energy (Parent) | September 2019 |  | 5.050 | % |  | 500 |
Piedmont | September 2019 |  | 2.848 | % | (b) | 350 |
First Mortgage Bonds |  |  |  |  |
Duke Energy Carolinas | November 2018 |  | 7.000 | % |  | 500 |
Duke Energy Progress | January 2019 |  | 5.300 | % |  | 600 |
Duke Energy Ohio | April 2019 |  | 5.450 | % |  | 450 |
Other(a) |  |  |  |  | 605 |
Current maturities of long-term debt |  |  |  |  | $ | 3,455 |
(a) Includes capital lease obligations, amortizing debt and small bullet maturities. (b) Debt issuance has a floating interest rate. AVAILABLE CREDIT FACILITIES Master Credit Facility In January 2018, Duke Energy extended the termination date of substantially all of its existing $8 billion Master Credit Facility capacity from March 16, 2022, to March 16, 2023. In May 2018, Duke Energy completed the extension process with 100 percent of all commitments to the Master Credit Facility extending to March 16, 2023. The Duke Energy Registrants, excluding Progress Energy (Parent), have borrowing capacity under the Master Credit Facility up to a specified sublimit for each borrower. Duke Energy has the unilateral ability at any time to increase or decrease the borrowing sublimits of each borrower, subject to a maximum sublimit for each borrower. The amount available under the Master Credit Facility has been reduced to backstop issuances of commercial paper, certain letters of credit and variable-rate demand tax-exempt bonds that may be put to the Duke Energy Registrants at the option of the holder. Duke Energy Carolinas and Duke Energy Progress are also required to each maintain $250 million of available capacity under the Master Credit Facility as security to meet obligations under plea agreements reached with the U.S. Department of Justice in 2015 related to violations at North Carolina facilities with ash basins. The table below includes the current borrowing sublimits and available capacity under the Master Credit Facility.
| September 30, 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 |  |  | $ | 1,750 |  |  | $ | 1,400 |  |  | $ | 650 |  |  | $ | 450 |  |  | $ | 600 |  |  | $ | 500 |
Reduction to backstop issuances |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial paper(b) | (2,519 | ) |  | (988 | ) |  | (872 | ) |  | (150 | ) |  | — |  |  | (216 | ) |  | (293 | ) |  | — |
Outstanding letters of credit | (55 | ) |  | (47 | ) |  | (4 | ) |  | (2 | ) |  | — |  |  | — |  |  | — |  |  | (2 | )
Tax-exempt bonds | (81 | ) |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (81 | ) |  | — |
Coal ash set-aside | (500 | ) |  | — |  |  | (250 | ) |  | (250 | ) |  | — |  |  | — |  |  | — |  |  | — |
Available capacity under the Master Credit Facility | $ | 4,845 |  |  | $ | 1,615 |  |  | $ | 624 |  |  | $ | 998 |  |  | $ | 650 |  |  | $ | 234 |  |  | $ | 226 |  |  | $ | 498 |
(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.
Three-Year Revolving Credit Facility Duke Energy (Parent) has a $1.0 billion revolving credit facility (the Three Year Revolver) through June 2020. As of September 30, 2018, $500 million has been drawn under the Three Year Revolver. This balance is classified as Long-Term Debt on Duke Energy's Condensed Consolidated Balance Sheets. Any undrawn commitments can be drawn and borrowings can be prepaid, at any time throughout the term of the facility. The terms and conditions of the Three Year Revolver are generally consistent with those governing Duke Energy's Master Credit Facility. Piedmont Term Loan Facility In September 2018, Piedmont executed an amendment to its existing senior unsecured term loan (the Piedmont Term Loan). The amendment increased commitments from $250 million to $350 million and extended the maturity date to September 2019. As of September 30, 2018, the entire $350 million has been drawn under the Piedmont Term Loan. The balance is classified as Current maturities of long-term debt on Piedmont's Condensed Consolidated Balance Sheets.

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- Definition The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -URI http://asc.fasb.org/topic&trid=2208564 + Details
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