Property And Plant, Net

12 Months Ended

Dec. 31, 2013

Property, Plant and Equipment [Abstract]

The following table presents property and plant, net, for each of the Ameren Companies at December 31, 2013, and 2012:



	Ameren Missouri^(a)		Ameren Illinois		Other		Ameren^(a)(b)
2013
Property and plant, at original cost:
Electric	$	15,964	$	5,426	$	336	$	21,726
Natural gas	413		1,562		—		1,975
	16,377		6,988		336		23,701
Less: Accumulated depreciation and amortization	6,766		1,627		251		8,644
	9,611		5,361		85		15,057
Construction work in progress:
Nuclear fuel in process	246		—		—		246
Other	595		228		79		902
Property and plant, net	$	10,452	$	5,589	$	164	$	16,205
2012
Property and plant, at original cost:
Electric	$	15,638	$	4,985	$	319	$	20,942
Natural gas	393		1,461		—		1,854
	16,031		6,446		319		22,796
Less: Accumulated depreciation and amortization	6,614		1,495		237		8,346
	9,417		4,951		82		14,450
Construction work in progress:
Nuclear fuel in process	317		—		—		317
Other	427		101		53		581
Property and plant, net	$	10,161	$	5,052	$	135	$	15,348

(a)

Amounts in Ameren and Ameren Missouri include two electric generation CTs under separate capital lease agreements. The gross cumulative asset value of those agreements was $228 million at December 31, 2013, and $228 million at December 31, 2012. The total accumulated depreciation associated with the two CTs was $56 million and $52 million at December 31, 2013, and 2012, respectively. In addition, Ameren Missouri has investments in debt securities, which were classified as held-to-maturity, related to the two CTs from the city of Bowling Green and Audrain County. As of December 31, 2013, and 2012, the carrying value of these debt securities was $299 million and $304 million, respectively.


(b)	Includes amounts for Ameren registrant and nonregistrant subsidiaries.

The following table provides accrued capital and nuclear fuel expenditures at December 31, 2013, 2012, and 2011, which represent noncash investing activity excluded from the accompanying statements of cash flows:



	Ameren^(a)		Ameren Missouri		Ameren Illinois
Accrued capital expenditures:
2013	$	175	$	74	$	86
2012	107		63		37
2011	97		73		18
Accrued nuclear fuel expenditures:
2013	8		8		(b)
2012	8		8		(b)
2011	36		36		(b)


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


(b)	Not applicable.

- Definition

The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures.

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