Other Comprehensive Income (Tables)

6 Months Ended

Jun. 30, 2011

Other Comprehensive Income

Schedule of Comprehensive Income

	Three Months						Six Months
	2011			2010			2011			2010
Ameren:(a)
Net income	$	139		$	155		$	213		$	261
Unrealized net gain (loss) on derivative hedging instruments, net of taxes (benefit) of $(5), $(7), $(4), and $11, respectively		(8	)		(11	)		(6	)		17
Reclassification adjustments for derivative (gain) loss included in net income, net of taxes (benefit) of $(4), $3, $(2), and $12, respectively		7			(5	)		3			(20	)
Pension and other postretirement activity, net of income taxes (benefit) of $(1), $5, $(2), and $6, respectively		-			7			(1	)		6
Total comprehensive income, net of taxes	$	138		$	146		$	209		$	264
Less: Net income attributable to noncontrolling interests, net of taxes		1			3			4			7
Total comprehensive income attributable to Ameren Corporation, net of taxes	$	137		$	143		$	205		$	257
Ameren Illinois:
Net income	$	38		$	57		$	72		$	105
Pension and other postretirement activity, net of income taxes (benefit) of $(1), $- , $(1), and $- , respectively		(1	)		-			(2	)		(1	)
Total comprehensive income, net of taxes	$	37		$	57		$	70		$	104
Genco:
Net income	$	13		$	14		$	35		$	38
Pension and other postretirement activity, net of income taxes (benefit) of $1, $3 , $1, and $5 , respectively		-			5			1			4
Total comprehensive income, net of taxes	$	13		$	19		$	36		$	42
Less: Net income attributable to noncontrolling interest, net of taxes		-			1			1			2
Total comprehensive income attributable to Genco	$	13		$	18		$	35		$	40

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