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Other Income And Expenses (Tables)
12 Months Ended
Dec. 31, 2017
Other Nonoperating Income (Expense) [Abstract]  
Other Income And Expenses
The following table presents the components of “Other Income and Expenses” in the Ameren Companies’ statements of income for the years ended December 31, 2017, 2016, and 2015:
 
2017
 
2016
 
2015
 
Ameren:(a)
 
 
 
 
 
 
Miscellaneous income:
 
 
 
 
 
 
Allowance for equity funds used during construction
$
24

 
$
27

 
$
30

 
Interest income on industrial development revenue bonds
26

 
27

 
27

 
Interest income(b)
8

  
13

  
14

 
Other
1

 
7

 
3

 
Total miscellaneous income
$
59

 
$
74

 
$
74

 
Miscellaneous expense:
 
 
 
 
 
 
Donations
$
8

 
$
16

 
$
15

 
Other
13

 
16

 
15

 
Total miscellaneous expense
$
21

 
$
32

 
$
30

 
Ameren Missouri:
 
 
 
 
 
 
Miscellaneous income:
 
 
 
 
 
 
Allowance for equity funds used during construction
$
21

 
$
23

 
$
22

 
Interest income on industrial development revenue bonds
26

 
27

 
27

 
Interest income
1

 
1

 
1

 
Other

 
1

 
2

 
Total miscellaneous income
$
48

 
$
52

 
$
52

 
Miscellaneous expense:
 
 
 
 
 
 
Donations
$
2

 
$
4

 
$
5

 
Other
6

 
6

 
6

 
Total miscellaneous expense
$
8

 
$
10

 
$
11

 
Ameren Illinois:
 
 
 
 
 
 
Miscellaneous income:
 
 
 
 
 
 
Allowance for equity funds used during construction
$
3

 
$
4

 
$
8

 
Interest income(b)
7

  
12

  
12

 
Other
1

 
5

 
1

 
Total miscellaneous income
$
11

 
$
21

 
$
21

 
Miscellaneous expense:
 
 
 
 
 
 
Donations
$
5

 
$
6

 
$
5

 
Other
5

 
6

 
7

 
Total miscellaneous expense
$
10

 
$
12

 
$
12

 
(a)
Includes amounts for Ameren registrant and nonregistrant subsidiaries and intercompany eliminations.
(b)
Includes Ameren Illinois’ interest income on the IEIMA revenue requirement reconciliation adjustment regulatory assets.