Other Income, Net (Tables)

12 Months Ended

Dec. 31, 2018

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, 2018, 2017, and 2016:

	2018				2017			2016
Ameren:
Other Income, Net
Allowance for equity funds used during construction	$	36			$	24		$	27
Interest income on industrial development revenue bonds	26				26			27
Other interest income	7				8			13
Non-service cost components of net periodic benefit income	70			(a)	44			56
Other income	8				5			10
Donations	(33		)		(8		)	(16		)
Other expense	(12		)		(13		)	(16		)
Total Other Income, Net	$	102			$	86		$	101
Ameren Missouri:
Other Income, Net
Allowance for equity funds used during construction	$	27			$	21		$	23
Interest income on industrial development revenue bonds	26				26			27
Other interest income	2				1			1
Non-service cost components of net periodic benefit income	17			(a)	22			18
Other income	4				3			3
Donations	(14		)		(2		)	(4		)
Other expense	(6		)		(6		)	(6		)
Total Other Income, Net	$	56			$	65		$	62
Ameren Illinois:
Other Income, Net
Allowance for equity funds used during construction	$	9			$	3		$	4
Interest income	6				7			12
Non-service cost components of net periodic benefit income	34				10			24
Other income	3				2			6
Donations	(6		)		(5		)	(6		)
Other expense	(4		)		(5		)	(6		)
Total Other Income, Net	$	42			$	12		$	34

.

(a) For the year ended December 31, 2018, the non-service cost components of net periodic benefit income were partially offset by a $17 million deferral 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 “Other Income (Expense), Net” in the Condensed Statement of Income and Comprehensive Income for the years ended December 31, 2018, 2017, and 2016:

	2018			2017		2016
Other Income (Expense), Net
Non-service cost components of net periodic benefit income	$	2		$	2	$	5
Donations	(13		)	—		(5		)
Other expense, net	(1		)	—		—
Total Other Income (Expense), Net	$	(12	)	$	2	$	—