v3.3.0.814

Employee Benefit Plans (Tables) | 9 Months Ended
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Sep. 30, 2015
Defined Benefit Plan Disclosure [Line Items] |
Employee Savings Plan Matching Contributions | The following table includes employer matching contributions, as well as the additional contribution of 4 percent of eligible pay per pay period for employees not eligible to participate in a defined benefit plan, made by Duke Energy and expensed by the Subsidiary Registrants.
|  |  | Duke |  |  |  |  | Duke |  |  | Duke |  |  | Duke |  |  | Duke |
| Duke |  |  | Energy |  |  | Progress |  |  | Energy |  |  | Energy |  |  | Energy |  |  | Energy |
(in millions) | Energy |  |  | Carolinas |  |  | Energy |  |  | Progress |  |  | Florida |  |  | Ohio |  |  | Indiana |
Three Months Ended September 30, |  |  |  |  |  |  |  |  |  |
2015 | $ | 34 |  |  | $ | 11 |  |  | $ | 10 |  |  | $ | 7 |  |  | $ | 3 |  |  | $ | — |  |  | $ | 1 |
2014 | 30 |  |  | 10 |  |  | 10 |  |  | 7 |  |  | 3 |  |  | — |  |  | 1 |
Nine Months Ended September 30, |  |  |  |  |  |  |  |  |  |
2015 | $ | 120 |  |  | $ | 40 |  |  | $ | 36 |  |  | $ | 26 |  |  | $ | 10 |  |  | $ | 2 |  |  | $ | 5 |
2014 | 110 |  |  | 36 |  |  | 33 |  |  | 23 |  |  | 10 |  |  | 2 |  |  | 5 |
Qualified Pension Plans [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Plan Contributions by Employer | The following table includes information related to the Duke Energy Registrants’ contributions to its U.S. qualified defined benefit pension plans.
| Nine Months Ended September 30, 2015
|  |  | Duke |  |  |  |  | Duke |  |  | Duke |  |  | Duke |  |  | Duke |
| Duke |  |  | Energy |  |  | Progress |  |  | Energy |  |  | Energy |  |  | Energy |  |  | Energy |
(in millions) | Energy |  |  | Carolinas |  |  | Energy |  |  | Progress |  |  | Florida |  |  | Ohio |  |  | Indiana |
Contributions | $ | 143 |  |  | $ | 42 |  |  | $ | 42 |  |  | $ | 21 |  |  | $ | 21 |  |  | $ | 4 |  |  | $ | 9 |
Duke Energy and Duke Energy Ohio made contributions of $11 million and $3 million, respectively, to their U.S. qualified defined benefit pension plans during the three months ended September 30, 2015. Duke Energy did not make any contributions to its U.S. qualified defined benefit pension plans during the nine months ended September 30, 2014.
Components of Net Periodic Pension Costs | The following tables include the components of net periodic pension costs for qualified pension plans.
| Three Months Ended September 30, 2015
|  |  | Duke |  |  |  |  | Duke |  |  | Duke |  |  | Duke |  |  | Duke |
| Duke |  |  | Energy |  |  | Progress |  |  | Energy |  |  | Energy |  |  | Energy |  |  | Energy |
(in millions) | Energy |  |  | Carolinas |  |  | Energy |  |  | Progress |  |  | Florida |  |  | Ohio |  |  | Indiana |
Service cost | $ | 40 |  |  | $ | 13 |  |  | $ | 11 |  |  | $ | 6 |  |  | $ | 5 |  |  | $ | 1 |  |  | $ | 3 |
Interest cost on projected benefit obligation | 81 |  |  | 21 |  |  | 26 |  |  | 12 |  |  | 14 |  |  | 5 |  |  | 7 |
Expected return on plan assets | (129 | ) |  | (35 | ) |  | (43 | ) |  | (20 | ) |  | (22 | ) |  | (7 | ) |  | (10 | )
Amortization of actuarial loss | 44 |  |  | 10 |  |  | 17 |  |  | 8 |  |  | 8 |  |  | 3 |  |  | 3 |
Amortization of prior service credit | (4 | ) |  | (2 | ) |  | (1 | ) |  | — |  |  | — |  |  | — |  |  | — |
Other | 2 |  |  | 1 |  |  | 1 |  |  | — |  |  | — |  |  | — |  |  | — |
Net periodic pension costs | $ | 34 |  |  | $ | 8 |  |  | $ | 11 |  |  | $ | 6 |  |  | $ | 5 |  |  | $ | 2 |  |  | $ | 3 |
| Three Months Ended September 30, 2014
|  |  | Duke |  |  |  |  | Duke |  |  | Duke |  |  | Duke |  |  | Duke |
| Duke |  |  | Energy |  |  | Progress |  |  | Energy |  |  | Energy |  |  | Energy |  |  | Energy |
(in millions) | Energy |  |  | Carolinas |  |  | Energy |  |  | Progress |  |  | Florida |  |  | Ohio |  |  | Indiana |
Service cost | $ | 34 |  |  | $ | 10 |  |  | $ | 10 |  |  | $ | 6 |  |  | $ | 5 |  |  | $ | 1 |  |  | $ | 3 |
Interest cost on projected benefit obligation | 86 |  |  | 22 |  |  | 28 |  |  | 13 |  |  | 14 |  |  | 5 |  |  | 7 |
Expected return on plan assets | (128 | ) |  | (33 | ) |  | (44 | ) |  | (21 | ) |  | (21 | ) |  | (7 | ) |  | (10 | )
Amortization of actuarial loss | 37 |  |  | 8 |  |  | 17 |  |  | 8 |  |  | 8 |  |  | 1 |  |  | 3 |
Amortization of prior service credit | (4 | ) |  | (2 | ) |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Other | 3 |  |  | 1 |  |  | 1 |  |  | — |  |  | — |  |  | — |  |  | — |
Net periodic pension costs | $ | 28 |  |  | $ | 6 |  |  | $ | 12 |  |  | $ | 6 |  |  | $ | 6 |  |  | $ | — |  |  | $ | 3 |
| Nine Months Ended September 30, 2015
|  |  | Duke |  |  |  |  | Duke |  |  | Duke |  |  | Duke |  |  | Duke |
| Duke |  |  | Energy |  |  | Progress |  |  | Energy |  |  | Energy |  |  | Energy |  |  | Energy |
(in millions) | Energy |  |  | Carolinas |  |  | Energy |  |  | Progress |  |  | Florida |  |  | Ohio |  |  | Indiana |
Service cost | $ | 119 |  |  | $ | 38 |  |  | $ | 33 |  |  | $ | 18 |  |  | $ | 15 |  |  | $ | 3 |  |  | $ | 8 |
Interest cost on projected benefit obligation | 244 |  |  | 62 |  |  | 78 |  |  | 36 |  |  | 41 |  |  | 14 |  |  | 21 |
Expected return on plan assets | (387 | ) |  | (104 | ) |  | (127 | ) |  | (61 | ) |  | (66 | ) |  | (20 | ) |  | (31 | )
Amortization of actuarial loss | 131 |  |  | 30 |  |  | 51 |  |  | 25 |  |  | 24 |  |  | 8 |  |  | 10 |
Amortization of prior service credit | (11 | ) |  | (6 | ) |  | (3 | ) |  | (1 | ) |  | (1 | ) |  | — |  |  | — |
Other | 6 |  |  | 2 |  |  | 2 |  |  | 1 |  |  | 1 |  |  | — |  |  | — |
Net periodic pension costs | $ | 102 |  |  | $ | 22 |  |  | $ | 34 |  |  | $ | 18 |  |  | $ | 14 |  |  | $ | 5 |  |  | $ | 8 |
| Nine Months Ended September 30, 2014
|  |  | Duke |  |  |  |  | Duke |  |  | Duke |  |  | Duke |  |  | Duke |
| Duke |  |  | Energy |  |  | Progress |  |  | Energy |  |  | Energy |  |  | Energy |  |  | Energy |
(in millions) | Energy |  |  | Carolinas |  |  | Energy |  |  | Progress |  |  | Florida |  |  | Ohio |  |  | Indiana |
Service cost | $ | 102 |  |  | $ | 31 |  |  | $ | 30 |  |  | $ | 16 |  |  | $ | 15 |  |  | $ | 3 |  |  | $ | 7 |
Interest cost on projected benefit obligation | 258 |  |  | 64 |  |  | 84 |  |  | 40 |  |  | 43 |  |  | 15 |  |  | 22 |
Expected return on plan assets | (383 | ) |  | (99 | ) |  | (130 | ) |  | (64 | ) |  | (64 | ) |  | (20 | ) |  | (30 | )
Amortization of actuarial loss | 111 |  |  | 26 |  |  | 51 |  |  | 24 |  |  | 24 |  |  | 3 |  |  | 9 |
Amortization of prior service credit | (11 | ) |  | (6 | ) |  | (2 | ) |  | (1 | ) |  | (1 | ) |  | — |  |  | — |
Other | 6 |  |  | 2 |  |  | 2 |  |  | 1 |  |  | 1 |  |  | — |  |  | — |
Net periodic pension costs | $ | 83 |  |  | $ | 18 |  |  | $ | 35 |  |  | $ | 16 |  |  | $ | 18 |  |  | $ | 1 |  |  | $ | 8 |
Other Pension Plan [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Components of Net Periodic Pension Costs | The following tables include the components of net periodic pension costs for non-qualified pension plans for registrants with non-qualified pension costs.
| Three Months Ended September 30, 2015
|  |  | Duke |  |  |  |  | Duke |  |  | Duke |
| Duke |  |  | Energy |  |  | Progress |  |  | Energy |  |  | Energy |
(in millions) | Energy |  |  | Carolinas |  |  | Energy |  |  | Progress |  |  | Florida |
Service cost | $ | 1 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Interest cost on projected benefit obligation | 3 |  |  | — |  |  | 1 |  |  | — |  |  | 1 |
Amortization of actuarial loss | 2 |  |  | — |  |  | 1 |  |  | — |  |  | — |
Net periodic pension costs | $ | 6 |  |  | $ | — |  |  | $ | 2 |  |  | $ | — |  |  | $ | 1 |
| Three Months Ended September 30, 2014
|  |  | Duke |  |  |  |  | Duke |  |  | Duke |
| Duke |  |  | Energy |  |  | Progress |  |  | Energy |  |  | Energy |
(in millions) | Energy |  |  | Carolinas |  |  | Energy |  |  | Progress |  |  | Florida |
Service cost | $ | 1 |  |  | $ | — |  |  | $ | — |  |  | $ | 1 |  |  | $ | — |
Interest cost on projected benefit obligation | 3 |  |  | 1 |  |  | 2 |  |  | — |  |  | — |
Amortization of actuarial loss | 1 |  |  | — |  |  | — |  |  | — |  |  | — |
Amortization of prior service credit | — |  |  | — |  |  | (1 | ) |  | — |  |  | — |
Net periodic pension costs | $ | 5 |  |  | $ | 1 |  |  | $ | 1 |  |  | $ | 1 |  |  | $ | — |
| Nine Months Ended September 30, 2015
|  |  | Duke |  |  |  |  | Duke |  |  | Duke |
| Duke |  |  | Energy |  |  | Progress |  |  | Energy |  |  | Energy |
(in millions) | Energy |  |  | Carolinas |  |  | Energy |  |  | Progress |  |  | Florida |
Service cost | $ | 2 |  |  | $ | — |  |  | $ | 1 |  |  | $ | — |  |  | $ | — |
Interest cost on projected benefit obligation | 10 |  |  | 1 |  |  | 3 |  |  | 1 |  |  | 2 |
Amortization of actuarial loss | 5 |  |  | — |  |  | 2 |  |  | — |  |  | 1 |
Net periodic pension costs | $ | 17 |  |  | $ | 1 |  |  | $ | 6 |  |  | $ | 1 |  |  | $ | 3 |
| Nine Months Ended September 30, 2014
|  |  | Duke |  |  |  |  | Duke |  |  | Duke |
| Duke |  |  | Energy |  |  | Progress |  |  | Energy |  |  | Energy |
(in millions) | Energy |  |  | Carolinas |  |  | Energy |  |  | Progress |  |  | Florida |
Service cost | $ | 2 |  |  | $ | — |  |  | $ | 1 |  |  | $ | 1 |  |  | $ | — |
Interest cost on projected benefit obligation | 10 |  |  | 1 |  |  | 4 |  |  | 1 |  |  | 1 |
Amortization of actuarial loss | 2 |  |  | — |  |  | 1 |  |  | — |  |  | — |
Amortization of prior service cost | — |  |  | — |  |  | (1 | ) |  | — |  |  | — |
Net periodic pension costs | $ | 14 |  |  | $ | 1 |  |  | $ | 5 |  |  | $ | 2 |  |  | $ | 1 |
Other Post-Retirement Benefit Plans [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Components of Net Periodic Pension Costs | The following tables include the components of net periodic other post-retirement benefit costs.
| Three Months Ended September 30, 2015
|  |  | Duke |  |  |  |  | Duke |  |  | Duke |  |  | Duke |  |  | Duke |
| Duke |  |  | Energy |  |  | Progress |  |  | Energy |  |  | Energy |  |  | Energy |  |  | Energy |
(in millions) | Energy |  |  | Carolinas |  |  | Energy |  |  | Progress |  |  | Florida |  |  | Ohio |  |  | Indiana |
Service cost | $ | 1 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Interest cost on accumulated post-retirement benefit obligation | 9 |  |  | 2 |  |  | 4 |  |  | 2 |  |  | 2 |  |  | — |  |  | 1 |
Expected return on plan assets | (3 | ) |  | (2 | ) |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Amortization of actuarial loss | 6 |  |  | — |  |  | 7 |  |  | 5 |  |  | 3 |  |  | — |  |  | — |
Amortization of prior service credit | (35 | ) |  | (4 | ) |  | (26 | ) |  | (17 | ) |  | (9 | ) |  | — |  |  | — |
Net periodic other post-retirement benefit costs | $ | (22 | ) |  | $ | (4 | ) |  | $ | (15 | ) |  | $ | (10 | ) |  | $ | (4 | ) |  | $ | — |  |  | $ | 1 |
| Three Months Ended September 30, 2014
|  |  | Duke |  |  |  |  | Duke |  |  | Duke |  |  | Duke |  |  | Duke |
| Duke |  |  | Energy |  |  | Progress |  |  | Energy |  |  | Energy |  |  | Energy |  |  | Energy |
(in millions) | Energy |  |  | Carolinas |  |  | Energy |  |  | Progress |  |  | Florida |  |  | Ohio |  |  | Indiana |
Service cost | $ | 2 |  |  | $ | — |  |  | $ | 1 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Interest cost on accumulated post-retirement benefit obligation | 13 |  |  | 3 |  |  | 6 |  |  | 3 |  |  | 3 |  |  | — |  |  | 1 |
Expected return on plan assets | (3 | ) |  | (2 | ) |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Amortization of actuarial loss | 9 |  |  | 1 |  |  | 10 |  |  | 8 |  |  | 3 |  |  | — |  |  | — |
Amortization of prior service credit | (31 | ) |  | (3 | ) |  | (24 | ) |  | (19 | ) |  | (5 | ) |  | — |  |  | — |
Net periodic other post-retirement benefit costs | $ | (10 | ) |  | $ | (1 | ) |  | $ | (7 | ) |  | $ | (8 | ) |  | $ | 1 |  |  | $ | — |  |  | $ | 1 |
| Nine Months Ended September 30, 2015
|  |  | Duke |  |  |  |  | Duke |  |  | Duke |  |  | Duke |  |  | Duke |
| Duke |  |  | Energy |  |  | Progress |  |  | Energy |  |  | Energy |  |  | Energy |  |  | Energy |
(in millions) | Energy |  |  | Carolinas |  |  | Energy |  |  | Progress |  |  | Florida |  |  | Ohio |  |  | Indiana |
Service cost | $ | 4 |  |  | $ | 1 |  |  | $ | 1 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Interest cost on accumulated post-retirement benefit obligation | 27 |  |  | 6 |  |  | 11 |  |  | 6 |  |  | 5 |  |  | 1 |  |  | 3 |
Expected return on plan assets | (9 | ) |  | (6 | ) |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Amortization of actuarial loss (gain) | 19 |  |  | (1 | ) |  | 21 |  |  | 14 |  |  | 8 |  |  | — |  |  | (1 | )
Amortization of prior service credit | (105 | ) |  | (11 | ) |  | (77 | ) |  | (50 | ) |  | (25 | ) |  | — |  |  | — |
Net periodic other post-retirement benefit costs | $ | (64 | ) |  | $ | (11 | ) |  | $ | (44 | ) |  | $ | (30 | ) |  | $ | (12 | ) |  | $ | 1 |  |  | $ | 2 |
| Nine Months Ended September 30, 2014
|  |  | Duke |  |  |  |  | Duke |  |  | Duke |  |  | Duke |  |  | Duke |
| Duke |  |  | Energy |  |  | Progress |  |  | Energy |  |  | Energy |  |  | Energy |  |  | Energy |
(in millions) | Energy |  |  | Carolinas |  |  | Energy |  |  | Progress |  |  | Florida |  |  | Ohio |  |  | Indiana |
Service cost | $ | 7 |  |  | $ | 1 |  |  | $ | 3 |  |  | $ | 1 |  |  | $ | 2 |  |  | $ | — |  |  | $ | — |
Interest cost on accumulated post-retirement benefit obligation | 38 |  |  | 9 |  |  | 17 |  |  | 8 |  |  | 9 |  |  | 1 |  |  | 4 |
Expected return on plan assets | (9 | ) |  | (6 | ) |  | — |  |  | — |  |  | — |  |  | — |  |  | (1 | )
Amortization of actuarial loss (gain) | 29 |  |  | 2 |  |  | 31 |  |  | 23 |  |  | 8 |  |  | (1 | ) |  | — |
Amortization of prior service credit | (94 | ) |  | (8 | ) |  | (71 | ) |  | (55 | ) |  | (16 | ) |  | — |  |  | — |
Net periodic other post-retirement benefit costs | $ | (29 | ) |  | $ | (2 | ) |  | $ | (20 | ) |  | $ | (23 | ) |  | $ | 3 |  |  | $ | — |  |  | $ | 3 |

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- Definition Tabular disclosure of the costs related to the various types of retirement plans including defined benefit pension plan cost, defined contribution plan cost, other postretirement benefit plan cost, and net periodic benefit cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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