Other Income and Expenses (Tables)

3 Months Ended

Mar. 31, 2021

Other Nonoperating Income (Expense) [Abstract]

The following table presents the components of “Other Income, Net” in the Ameren Companies’ statements of income for the three months ended March 31, 2021 and 2020:


	Three Months
		2021		2020
Ameren:

Allowance for equity funds used during construction		$	7	$	4
Interest income on industrial development revenue bonds		6		6
Other interest income		1		1

Non-service cost components of net periodic benefit income(a)		34		23
Miscellaneous income		4		2
Donations		(3)		(13)		(b)
Miscellaneous expense		(3)		(2)
Total Other Income, Net		$	46	$	21
Ameren Missouri:

Allowance for equity funds used during construction		$	4	$	2
Interest income on industrial development revenue bonds		6		6

Non-service cost components of net periodic benefit income(a)		14		5
Miscellaneous income		1		1
Donations		—		(8)		(b)
Miscellaneous expense		(2)		(2)
Total Other Income, Net		$	23	$	4
Ameren Illinois:

Allowance for equity funds used during construction		$	3	$	2
Interest income		1		1

Non-service cost components of net periodic benefit income		14		13
Miscellaneous income		—		1
Donations		(3)		(4)
Miscellaneous expense		(1)		(2)
Total Other Income, Net		$	14	$	11

(a)For the three months ended March 31, 2021 and 2020, the non-service cost components of net periodic benefit income were adjusted by amounts deferred of less than $(1) million and $6 million, respectively, due to a regulatory tracking mechanism for the difference between the level of such costs incurred by Ameren Missouri under GAAP and the level of such costs included in rates.

(b)Includes $8 million pursuant to Ameren Missouri’s March 2020 electric rate order. See Note 2 – Rate and Regulatory Matters under Part II, Item 8, in the Form 10-K for additional information.