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Other Income and Expenses, Net (Tables)
12 Months Ended
Dec. 31, 2018
Component Of Other Income Expense Nonoperating [Line Items]  
Schedule of Other Income and Expenses, Net
The components of Other income and expenses, net on the Consolidated Statements of Operations are as follows.
 
Year Ended December 31, 2018
 
 
 
Duke

 
 
 
Duke

 
Duke

 
Duke

 
Duke

 
 
 
Duke

 
Energy

 
Progress

 
Energy

 
Energy

 
Energy

 
Energy

 
 
(in millions)
Energy

 
Carolinas

 
Energy

 
Progress

 
Florida

 
Ohio

 
Indiana

 
Piedmont

Interest income
$
20

 
$
1

 
$
18

 
$
1

 
$
18

 
$
7

 
$
9

 
$
1

AFUDC equity
221

 
73

 
104

 
57

 
47

 
11

 
32

 

Post in-service equity returns
15

 
9

 
5

 
5

 

 
1

 

 

Nonoperating income, other
143

 
70

 
38

 
24

 
21

 
4

 
4

 
13

Other income and expense, net
$
399

 
$
153

 
$
165

 
$
87

 
$
86

 
$
23

 
$
45

 
$
14

 
Year Ended December 31, 2017
 
 
 
Duke

 
 
 
Duke

 
Duke

 
Duke

 
Duke

 
 
 
Duke

 
Energy

 
Progress

 
Energy

 
Energy

 
Energy

 
Energy

 
 
(in millions)
Energy

 
Carolinas

 
Energy

 
Progress

 
Florida

 
Ohio

 
Indiana

 
Piedmont

Interest income
$
13

 
$
2

 
$
6

 
$
2

 
$
5

 
$
6

 
$
8

 
$

AFUDC equity
237

 
106

 
92

 
47

 
45

 
11

 
28

 

Post in-service equity returns
40

 
28

 
12

 
12

 

 

 

 

Nonoperating income, other
218

 
63

 
99

 
54

 
46

 
6

 
11

 
(11
)
Other income and expense, net
$
508

 
$
199

 
$
209

 
$
115

 
$
96

 
$
23

 
$
47

 
$
(11
)
 
Year Ended December 31, 2016
 
 
 
Duke

 
 
 
Duke

 
Duke

 
Duke

 
Duke

 
Duke

 
Energy

 
Progress

 
Energy

 
Energy

 
Energy

 
Energy

(in millions)
Energy

 
Carolinas

 
Energy

 
Progress

 
Florida

 
Ohio

 
Indiana

Interest income
$
21

 
$
4

 
$
4

 
$
3

 
$
2

 
$
5

 
$
6

AFUDC equity
200

 
102

 
76

 
50

 
26

 
6

 
16

Post in-service equity returns
67

 
55

 
12

 
12

 

 

 

Nonoperating income, other
175

 
53

 
94

 
67

 
35

 

 
4

Other income and expense, net(a)
$
463

 
$
214

 
$
186

 
$
132

 
$
63

 
$
11

 
$
26


(a)
Amounts for Piedmont for the two months ended December 31, 2016, and for the year ended October 31, 2016, were not material.