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Employee Benefit Plans
9 Months Ended
Sep. 30, 2017
Retirement Benefits [Abstract]  
Employee Benefit Plans
EMPLOYEE BENEFIT PLANS
DEFINED BENEFIT RETIREMENT PLANS
Duke Energy maintains, and the Subsidiary Registrants participate in, qualified and non-qualified, non-contributory defined benefit retirement plans. Duke Energy’s policy is to fund amounts on an actuarial basis to provide assets sufficient to meet benefit payments to be paid to plan participants. The following table includes information related to the Duke Energy Registrants' contributions to its U.S. qualified defined benefit pension plans.
 
 
 
Duke

 
 
 
Duke

 
Energy

 
 
(in millions)
Energy

 
Ohio

 
Piedmont

Anticipated 2017 contributions
$
19

 
$
4

 
$
11

Contributions made during the nine months ended September 30, 2017
8

 
4

 

Remaining estimated contributions to be made in 2017
$
11

 
$

 
$
11


Duke Energy did not make any contributions to its U.S. qualified defined benefit pension plans during the nine months ended September 30, 2016.
Net periodic benefit costs disclosed in the tables below represent the cost of the respective benefit plan for the periods presented. However, portions of the net periodic benefit costs disclosed in the tables below have been capitalized as a component of property, plant and equipment. Amounts presented in the tables below for the Subsidiary Registrants represent the amounts of pension and other post-retirement benefit costs allocated by Duke Energy for employees of the Subsidiary Registrants. Additionally, the Subsidiary Registrants are allocated their proportionate share of pension and post-retirement benefit costs for employees of Duke Energy’s shared services affiliate that provides support to the Subsidiary Registrants. These allocated amounts are included in the governance and shared service costs discussed in Note 9. Duke Energy uses a December 31 measurement date for its defined benefit retirement plan assets and obligations.
QUALIFIED PENSION PLANS
The following tables include the components of net periodic pension costs for qualified pension plans.
 
Three Months Ended September 30, 2017
 
 
 
Duke

 
 
 
Duke

 
Duke

 
Duke

 
Duke

 
 
 
Duke

 
Energy

 
Progress

 
Energy

 
Energy

 
Energy

 
Energy

 
 
(in millions)
Energy

 
Carolinas

 
Energy

 
Progress

 
Florida

 
Ohio

 
Indiana

 
Piedmont

Service cost
$
40

 
$
12

 
$
12

 
$
6

 
$
5

 
$
1

 
$
2

 
$
3

Interest cost on projected benefit obligation
82

 
20

 
25

 
12

 
13

 
4

 
7

 
3

Expected return on plan assets
(136
)
 
(35
)
 
(43
)
 
(21
)
 
(21
)
 
(7
)
 
(11
)
 
(6
)
Amortization of actuarial loss
36

 
8

 
14

 
6

 
7

 
1

 
3

 
3

Amortization of prior service credit
(6
)
 
(2
)
 
(1
)
 

 

 

 

 
(1
)
Other
2

 

 
1

 

 

 

 

 

Net periodic pension costs
$
18

 
$
3

 
$
8

 
$
3

 
$
4

 
$
(1
)
 
$
1

 
$
2

 
Three Months Ended September 30, 2016
 
 
 
Duke

 
 
 
Duke

 
Duke

 
Duke

 
Duke

 
 
 
Duke

 
Energy

 
Progress

 
Energy

 
Energy

 
Energy

 
Energy

 
 
(in millions)
Energy

 
Carolinas

 
Energy

 
Progress

 
Florida

 
Ohio

 
Indiana

 
Piedmont

Service cost
$
36

 
$
12

 
$
11

 
$
6

 
$
4

 
$
1

 
$
2

 
$
3

Interest cost on projected benefit obligation
83

 
21

 
27

 
12

 
14

 
5

 
7

 
2

Expected return on plan assets
(128
)
 
(35
)
 
(42
)
 
(21
)
 
(21
)
 
(6
)
 
(10
)
 
(6
)
Amortization of actuarial loss
33

 
8

 
14

 
6

 
7

 
1

 
3

 
2

Amortization of prior service credit
(4
)
 
(2
)
 
(1
)
 

 
(1
)
 

 

 
(1
)
Other
2

 
1

 
1

 

 
1

 

 

 

Net periodic pension costs
$
22

 
$
5

 
$
10

 
$
3

 
$
4

 
$
1

 
$
2

 
$

 
Nine Months Ended September 30, 2017
 
 
 
Duke

 
 
 
Duke

 
Duke

 
Duke

 
Duke

 
 
 
Duke

 
Energy

 
Progress

 
Energy

 
Energy

 
Energy

 
Energy

 
 
(in millions)
Energy

 
Carolinas

 
Energy

 
Progress

 
Florida

 
Ohio

 
Indiana

 
Piedmont

Service cost
$
120

 
$
36

 
$
36

 
$
18

 
$
15

 
$
3

 
$
6

 
$
9

Interest cost on projected benefit obligation
246

 
60

 
75

 
36

 
39

 
14

 
21

 
9

Expected return on plan assets
(408
)
 
(106
)
 
(129
)
 
(63
)
 
(63
)
 
(21
)
 
(33
)
 
(18
)
Amortization of actuarial loss
108

 
24

 
42

 
18

 
21

 
3

 
9

 
9

Amortization of prior service credit
(18
)
 
(6
)
 
(3
)
 

 

 

 

 
(3
)
Other
6

 

 
3

 
1

 

 

 

 
1

Net periodic pension costs
$
54

 
$
8

 
$
24

 
$
10

 
$
12

 
$
(1
)
 
$
3

 
$
7

 
Nine Months Ended September 30, 2016
 
 
 
Duke

 
 
 
Duke

 
Duke

 
Duke

 
Duke

 
 
 
Duke

 
Energy

 
Progress

 
Energy

 
Energy

 
Energy

 
Energy

 
 
(in millions)
Energy

 
Carolinas

 
Energy

 
Progress

 
Florida

 
Ohio

 
Indiana

 
Piedmont

Service cost
$
109

 
$
36

 
$
32

 
$
18

 
$
14

 
$
3

 
$
6

 
$
8

Interest cost on projected benefit obligation
249

 
64

 
80

 
37

 
42

 
15

 
21

 
7

Expected return on plan assets
(386
)
 
(106
)
 
(126
)
 
(62
)
 
(63
)
 
(20
)
 
(31
)
 
(18
)
Amortization of actuarial loss
99

 
24

 
41

 
17

 
21

 
3

 
9

 
6

Amortization of prior service credit
(12
)
 
(6
)
 
(3
)
 
(1
)
 
(1
)
 

 

 
(2
)
Other
6

 
2

 
2

 
1

 
1

 

 

 

Net periodic pension costs
$
65

 
$
14

 
$
26

 
$
10

 
$
14

 
$
1

 
$
5

 
$
1

NON-QUALIFIED PENSION PLANS
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, 2017
 
 
 
Duke

 
 
 
Duke

 
Duke

 
Duke

 
Energy

 
Progress

 
Energy

 
Energy

(in millions)
Energy

 
Carolinas

 
Energy

 
Progress

 
Florida

Service cost
$

 
$

 
$

 
$

 
$

Interest cost on projected benefit obligation
4

 

 
1

 
1

 
1

Amortization of actuarial loss
2

 

 
1

 

 

Net periodic pension costs
$
6

 
$

 
$
2

 
$
1

 
$
1

 
Three Months Ended September 30, 2016
 
 
 
Duke

 
 
 
Duke

 
Duke

 
Duke

 
Energy

 
Progress

 
Energy

 
Energy

(in millions)
Energy

 
Carolinas

 
Energy

 
Progress

 
Florida

Service cost
$
1

 
$

 
$

 
$

 
$

Interest cost on projected benefit obligation
4

 

 
2

 

 

Amortization of actuarial loss
2

 

 
1

 
1

 
1

Amortization of prior service credit
(1
)
 

 

 

 

Net periodic pension costs
$
6


$


$
3


$
1


$
1

 
Nine Months Ended September 30, 2017
 
 
 
Duke

 
 
 
Duke

 
Duke

 
Duke

 
Energy

 
Progress

 
Energy

 
Energy

(in millions)
Energy

 
Carolinas

 
Energy

 
Progress

 
Florida

Service cost
$

 
$

 
$

 
$

 
$

Interest cost on projected benefit obligation
10

 
1

 
3

 
2

 
2

Amortization of actuarial loss
6

 

 
3

 

 

Net periodic pension costs
$
16

 
$
1

 
$
6

 
$
2

 
$
2

 
Nine Months Ended September 30, 2016
 
 
 
Duke

 
 
 
Duke

 
Duke

 
Duke

 
Energy

 
Progress

 
Energy

 
Energy

(in millions)
Energy

 
Carolinas

 
Energy

 
Progress

 
Florida

Service cost
$
2

 
$

 
$

 
$

 
$

Interest cost on projected benefit obligation
11

 
1

 
4

 
1

 
1

Amortization of actuarial loss
6

 

 
2

 
1

 
1

Amortization of prior service credit
(1
)
 

 

 

 

Net periodic pension costs
$
18


$
1


$
6


$
2


$
2


OTHER POST-RETIREMENT BENEFIT PLANS
Duke Energy provides, and the Subsidiary Registrants participate in, some health care and life insurance benefits for retired employees on a contributory and non-contributory basis.
The following tables include the components of net periodic other post-retirement benefit costs.
 
Three Months Ended September 30, 2017
 
 
 
Duke

 
 
 
Duke

 
Duke

 
Duke

 
Duke

 
 
 
Duke

 
Energy

 
Progress

 
Energy

 
Energy

 
Energy

 
Energy

 
 
(in millions)
Energy

 
Carolinas

 
Energy

 
Progress

 
Florida

 
Ohio

 
Indiana

 
Piedmont

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
2

 

 
5

 
3

 
2

 

 

 

Amortization of prior service credit
(29
)
 
(2
)
 
(21
)
 
(14
)
 
(8
)
 

 

 

Net periodic other post-retirement benefit costs
$
(20
)
 
$
(2
)
 
$
(12
)
 
$
(9
)
 
$
(4
)
 
$

 
$
1

 
$

 
Three Months Ended September 30, 2016
 
 
 
Duke

 
 
 
Duke

 
Duke

 
Duke

 
Duke

 
 
 
Duke

 
Energy

 
Progress

 
Energy

 
Energy

 
Energy

 
Energy

 
 
(in millions)
Energy

 
Carolinas

 
Energy

 
Progress

 
Florida

 
Ohio

 
Indiana

 
Piedmont

Service cost
$

 
$

 
$
1

 
$

 
$

 
$

 
$

 
$
1

Interest cost on accumulated post-retirement benefit obligation
9

 
2

 
4

 
2

 
3

 

 
1

 

Expected return on plan assets
(2
)
 
(2
)
 
(1
)
 

 

 

 

 

Amortization of actuarial loss (gain)
2

 

 
5

 
3

 
2

 
(1
)
 

 

Amortization of prior service credit
(35
)
 
(4
)
 
(26
)
 
(16
)
 
(8
)
 

 
(1
)
 

Net periodic other post-retirement benefit costs
$
(26
)
 
$
(4
)
 
$
(17
)
 
$
(11
)
 
$
(3
)
 
$
(1
)
 
$

 
$
1

 
Nine Months Ended September 30, 2017
 
 
 
Duke

 
 
 
Duke

 
Duke

 
Duke

 
Duke

 
 
 
Duke

 
Energy

 
Progress

 
Energy

 
Energy

 
Energy

 
Energy

 
 
(in millions)
Energy

 
Carolinas

 
Energy

 
Progress

 
Florida

 
Ohio

 
Indiana

 
Piedmont

Service cost
$
3

 
$

 
$

 
$

 
$

 
$

 
$

 
$

Interest cost on accumulated post-retirement benefit obligation
27

 
6

 
11

 
6

 
6

 

 
1

 

Expected return on plan assets
(10
)
 
(6
)
 

 

 

 

 

 

Amortization of actuarial loss (gain)
6

 
(2
)
 
15

 
9

 
6

 
(1
)
 

 

Amortization of prior service credit
(87
)
 
(6
)
 
(63
)
 
(41
)
 
(23
)
 

 

 

Net periodic other post-retirement benefit costs
$
(61
)
 
$
(8
)
 
$
(37
)
 
$
(26
)
 
$
(11
)
 
$
(1
)
 
$
1

 
$

 
Nine Months Ended September 30, 2016
 
 
 
Duke

 
 
 
Duke

 
Duke

 
Duke

 
Duke

 
 
 
Duke

 
Energy

 
Progress

 
Energy

 
Energy

 
Energy

 
Energy

 
 
(in millions)
Energy

 
Carolinas

 
Energy

 
Progress

 
Florida

 
Ohio

 
Indiana

 
Piedmont

Service cost
$
2

 
$

 
$
1

 
$

 
$

 
$

 
$

 
$
1

Interest cost on accumulated post-retirement benefit obligation
26

 
6

 
11

 
6

 
6

 
1

 
3

 
1

Expected return on plan assets
(9
)
 
(6
)
 
(1
)
 

 

 

 
(1
)
 
(1
)
Amortization of actuarial loss (gain)
5

 
(2
)
 
16

 
9

 
7

 
(2
)
 
(1
)
 

Amortization of prior service credit
(106
)
 
(10
)
 
(77
)
 
(50
)
 
(26
)
 

 
(1
)
 

Net periodic other post-retirement benefit costs
$
(82
)
 
$
(12
)
 
$
(50
)
 
$
(35
)
 
$
(13
)
 
$
(1
)
 
$

 
$
1

DEFINED CONTRIBUTION RETIREMENT PLANS
EMPLOYEE SAVINGS PLANS
Duke Energy sponsors, and the Subsidiary Registrants participate in, employee savings plans that cover substantially all U.S. employees. The following table presents employer contributions 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

 
Piedmont

Three Months Ended September 30,
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2017
$
43

 
$
14

 
$
12

 
$
9

 
$
4

 
$
1

 
$
2

 
$
2

2016
39

 
13

 
12

 
8

 
3

 
1

 
2

 
2

Nine Months Ended September 30,
 
 
 
 
 
 
 
 
 
 
 
 
2017
$
147

 
$
49

 
$
42

 
$
30

 
$
13

 
$
3

 
$
7

 
$
5

2016
130

 
44

 
39

 
27

 
11

 
3

 
6

 
5


MONEY PURCHASE PENSION PLAN
Duke Energy provides, and Piedmont participates in, the Money Purchase Pension (MPP) plan, which is a defined contribution pension plan that allows certain employees to direct investments and assume risk of investment returns. In January 2017, a $2 million contribution was made to the MPP plan.