Short-Term Debt And Liquidity (Tables)

12 Months Ended

Dec. 31, 2013

Line of Credit Facility [Abstract]

Schedule Of Maximum Aggregate Amount Available On Credit Agreements

The maximum aggregate amount available to each borrower under each facility is shown in the following table (such amount being such borrower's "Borrowing Sublimit"):

		2012 Missouri Credit Agreement	2012 Illinois Credit Agreement
Ameren	$	500	$	300
Ameren Missouri		800	(a)
Ameren Illinois		(a)	800

(a) Not applicable.

Schedule of Commercial Paper

mercial Paper

The following table summarizes the borrowing activity and relevant interest rates under Ameren's commercial paper program, for the years ended December 31, 2013, and 2012:

	2013			2012
Average daily borrowings outstanding	$	54		$	49
Outstanding borrowings at period-end	368			—
Weighted-average interest rate	0.56		%	0.92		%
Peak borrowings during period	$	368		$	229
Peak interest rate	0.85		%	1.25		%