Other Income, Net (Tables)

12 Months Ended

Dec. 31, 2021

Other Nonoperating Income (Expense) [Abstract]

Other Income And Expenses

The following table presents the components of “Other Income, Net” in the Ameren Companies’ statements of income for the years ended December 31, 2021, 2020, and 2019:

	2021		2020			2019
Ameren:
Other Income, Net
Allowance for equity funds used during construction	$	43	$	32		$	28
Interest income on industrial development revenue bonds	25		25			25
Other interest income	2		4			8
Non-service cost components of net periodic benefit income (a)	136		116			90
Miscellaneous income	22		13			6
Donations	(9)		(25)		(b)	(12)
Miscellaneous expense	(17)		(14)			(15)
Total Other Income, Net	$	202	$	151		$	130
Ameren Missouri:
Other Income, Net
Allowance for equity funds used during construction	$	26	$	19		$	19
Interest income on industrial development revenue bonds	25		25			25
Other interest income	1		1			1
Non-service cost components of net periodic benefit income (a)	55		46			18
Miscellaneous income	3		4			5
Donations	(4)		(12)		(b)	(3)
Miscellaneous expense	(7)		(7)			(7)
Total Other Income, Net	$	99	$	76		$	58

	2021		2020		2019
Ameren Illinois:
Other Income, Net
Allowance for equity funds used during construction	$	17	$	13	$	9
Interest income	1		3		6
Non-service cost components of net periodic benefit income (a)	55		48		47
Miscellaneous income	6		6		3
Donations	(5)		(5)		(5)
Miscellaneous expense	(8)		(6)		(7)
Total Other Income, Net	$	66	$	59	$	53

(a)For the years ended December 31, 2021, 2020, and 2019, the non-service cost components of net periodic benefit income were adjusted by amounts deferred of $(7) million, $(4) million, and $29 million, respectively, due to a tracker 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.

The following table presents the components of “Total Other Expense, Net” in the Condensed Statement of Income and Comprehensive Income for the years ended December 31, 2021, 2020, and 2019:

(In millions)	2021		2020		2019
Total Other Expense, Net
Non-service cost components of net periodic benefit income	$	1	$	1	$	2
Donations	—		(8)		(3)
Other expense, net	(1)		(1)		(1)
Total Other Expense, Net	$	—	$	(8)	$	(2)