Other Income And Expenses (Tables)

6 Months Ended

Jun. 30, 2012

Other Income And Expenses

	Three Months				Six Months
	2012		2011		2012		2011
Ameren:(a)
Miscellaneous income:
Allowance for equity funds used during construction	$	8	$	9	$	17	$	15
Interest income on industrial development revenue bonds		7		7		14		14
Interest and dividend income(b)		5		1		5		2
Other		-		-		1		2
Total miscellaneous income	$	20	$	17	$	37	$	33
Miscellaneous expense:
Donations(c)	$	3	$	1	$	15	$	3
Other		4		4		7		7
Total miscellaneous expense	$	7	$	5	$	22	$	10
Ameren Missouri:
Miscellaneous income:
Allowance for equity funds used during construction	$	7	$	8	$	15	$	14
Interest income on industrial development revenue bonds		7		7		14		14
Interest and dividend income(b)		4		1		4		1
Total miscellaneous income	$	18	$	16	$	33	$	29
Miscellaneous expense:
Donations	$	3	$	1	$	5	$	2
Other		1		2		2		4
Total miscellaneous expense	$	4	$	3	$	7	$	6
Ameren Illinois:
Miscellaneous income:
Allowance for equity funds used during construction	$	1	$	1	$	2	$	1
Interest and dividend income		-		-		-		1
Other		1		-		1		1
Total miscellaneous income	$	2	$	1	$	3	$	3
Miscellaneous expense:
Donations(c)	$	-	$	-	$	10	$	-
Other		2		1		3		2
Total miscellaneous expense	$	2	$	1	$	13	$	2

(a) Includes amounts for Ameren registrant and nonregistrant subsidiaries and intercompany eliminations.

(b) Includes interest income relating to a refund of charges included in an expired power purchase agreement with Entergy. See Note 2 - Rate and Regulatory Matters for additional information.

(c) Includes Ameren Illinois’ one-time $7.5 million donation and $1 million annual donation to the Illinois Science and Energy Innovation Trust and $1 million annual donation for customer assistance programs pursuant to the IEIMA as a result of Ameren Illinois’ participation in the formula ratemaking process.

Ameren Missouri [Member]

Other Income And Expenses

	Three Months				Six Months
	2012		2011		2012		2011
Ameren:(a)
Miscellaneous income:
Allowance for equity funds used during construction	$	8	$	9	$	17	$	15
Interest income on industrial development revenue bonds		7		7		14		14
Interest and dividend income(b)		5		1		5		2
Other		-		-		1		2
Total miscellaneous income	$	20	$	17	$	37	$	33
Miscellaneous expense:
Donations(c)	$	3	$	1	$	15	$	3
Other		4		4		7		7
Total miscellaneous expense	$	7	$	5	$	22	$	10
Ameren Missouri:
Miscellaneous income:
Allowance for equity funds used during construction	$	7	$	8	$	15	$	14
Interest income on industrial development revenue bonds		7		7		14		14
Interest and dividend income(b)		4		1		4		1
Total miscellaneous income	$	18	$	16	$	33	$	29
Miscellaneous expense:
Donations	$	3	$	1	$	5	$	2
Other		1		2		2		4
Total miscellaneous expense	$	4	$	3	$	7	$	6
Ameren Illinois:
Miscellaneous income:
Allowance for equity funds used during construction	$	1	$	1	$	2	$	1
Interest and dividend income		-		-		-		1
Other		1		-		1		1
Total miscellaneous income	$	2	$	1	$	3	$	3
Miscellaneous expense:
Donations(c)	$	-	$	-	$	10	$	-
Other		2		1		3		2
Total miscellaneous expense	$	2	$	1	$	13	$	2

(a) Includes amounts for Ameren registrant and nonregistrant subsidiaries and intercompany eliminations.

(b) Includes interest income relating to a refund of charges included in an expired power purchase agreement with Entergy. See Note 2 - Rate and Regulatory Matters for additional information.

(c) Includes Ameren Illinois’ one-time $7.5 million donation and $1 million annual donation to the Illinois Science and Energy Innovation Trust and $1 million annual donation for customer assistance programs pursuant to the IEIMA as a result of Ameren Illinois’ participation in the formula ratemaking process.

Ameren Illinois Company [Member]

Other Income And Expenses

	Three Months				Six Months
	2012		2011		2012		2011
Ameren:(a)
Miscellaneous income:
Allowance for equity funds used during construction	$	8	$	9	$	17	$	15
Interest income on industrial development revenue bonds		7		7		14		14
Interest and dividend income(b)		5		1		5		2
Other		-		-		1		2
Total miscellaneous income	$	20	$	17	$	37	$	33
Miscellaneous expense:
Donations(c)	$	3	$	1	$	15	$	3
Other		4		4		7		7
Total miscellaneous expense	$	7	$	5	$	22	$	10
Ameren Missouri:
Miscellaneous income:
Allowance for equity funds used during construction	$	7	$	8	$	15	$	14
Interest income on industrial development revenue bonds		7		7		14		14
Interest and dividend income(b)		4		1		4		1
Total miscellaneous income	$	18	$	16	$	33	$	29
Miscellaneous expense:
Donations	$	3	$	1	$	5	$	2
Other		1		2		2		4
Total miscellaneous expense	$	4	$	3	$	7	$	6
Ameren Illinois:
Miscellaneous income:
Allowance for equity funds used during construction	$	1	$	1	$	2	$	1
Interest and dividend income		-		-		-		1
Other		1		-		1		1
Total miscellaneous income	$	2	$	1	$	3	$	3
Miscellaneous expense:
Donations(c)	$	-	$	-	$	10	$	-
Other		2		1		3		2
Total miscellaneous expense	$	2	$	1	$	13	$	2

(a) Includes amounts for Ameren registrant and nonregistrant subsidiaries and intercompany eliminations.

(b) Includes interest income relating to a refund of charges included in an expired power purchase agreement with Entergy. See Note 2 - Rate and Regulatory Matters for additional information.

(c) Includes Ameren Illinois’ one-time $7.5 million donation and $1 million annual donation to the Illinois Science and Energy Innovation Trust and $1 million annual donation for customer assistance programs pursuant to the IEIMA as a result of Ameren Illinois’ participation in the formula ratemaking process.