Other Income, Net (Tables)

12 Months Ended

Dec. 31, 2023

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, 2023, 2022, and 2021:

	2023		2022		2021
Ameren:
Other Income, Net
Allowance for equity funds used during construction	$	54	$	43	$	43
Interest income on industrial development revenue bonds	1		24		25
Other interest income	32		11		2
Non-service cost components of net periodic benefit income(a)	295		184		136
Miscellaneous income	7		10		10
Earnings related to equity method investments	1		2		12
Donations	(24)		(26)		(9)
Miscellaneous expense	(18)		(22)		(17)
Total Other Income, Net	$	348	$	226	$	202
Ameren Missouri:
Other Income, Net
Allowance for equity funds used during construction	$	30	$	24	$	26
Interest income on industrial development revenue bonds	1		24		25
Other interest income	10		4		1
Non-service cost components of net periodic benefit income(a)	97		55		55
Miscellaneous income	3		4		3
Donations	(2)		(3)		(4)
Miscellaneous expense	(9)		(9)		(7)
Total Other Income, Net	$	130	$	99	$	99
Ameren Illinois:
Other Income, Net
Allowance for equity funds used during construction	$	19	$	18	$	17
Interest income	21		7		1
Non-service cost components of net periodic benefit income	124		84		55
Miscellaneous income	4		5		6
Donations	(4)		(8)		(5)
Miscellaneous expense	(8)		(10)		(8)
Total Other Income, Net	$	156	$	96	$	66

(a)For the years ended December 31, 2023, 2022, and 2021, the non-service cost components of net periodic benefit income were adjusted by amounts deferred of $27 million, $22 million, and $(7) 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.

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, 2023, 2022, and 2021:

(In millions)	2023		2022		2021
Total Other Expense, Net
Non-service cost components of net periodic benefit income	$	8	$	3	$	1
Donations	(18)		(15)		—
Other expense, net	(1)		(1)		(1)
Total Other Expense, Net	$	(11)	$	(13)	$	—