Consolidated Balance Sheet - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 13	$ 292
Accounts receivable - trade (less allowance for doubtful accounts)	445	388
Unbilled revenue	328	239
Miscellaneous accounts and notes receivable	65	98
Materials and supplies	515	538
Current regulatory assets	146	260
Other current assets	68	88
Assets of discontinued operations	14	14
Total current assets	1,594	1,917
Property and Plant, Net	19,324	18,799
Investments and Other Assets:
Nuclear decommissioning trust fund	582	556
Goodwill	411	411
Regulatory assets	1,330	1,382
Other assets	552	575
Total investments and other assets	2,875	2,924
TOTAL ASSETS	23,793	23,640
Current Liabilities:
Current maturities of long-term debt	431	395
Short-term Debt	778	301
Accounts and wages payable	499	777
Taxes accrued	124	43
Interest accrued	102	89
Customer deposits	100	100
Current regulatory liabilities	99	80
Other current liabilities	270	279
Liabilities of discontinued operations	27	29
Total current liabilities	2,430	2,093
Long-term Debt, Net	6,605	6,880
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes, net	4,028	3,885
Accumulated deferred investment tax credits	57	60
Regulatory liabilities	1,953	1,905
Asset retirement obligations	629	618
Pension and other postretirement benefits	537	580
Other deferred credits and liabilities	490	531
Total deferred credits and other liabilities	7,694	7,579
Commitments and Contingencies
Stockholders' Equity:
Common Stock	2	2
Other paid-in capital	5,545	5,616
Retained earnings	1,376	1,331
Accumulated other comprehensive income (loss)	(1)	(3)
Stockholder's equity	6,922	6,946
Noncontrolling Interest	142	142
Total equity	7,064	7,088
TOTAL LIABILITIES AND EQUITY	23,793	23,640
Union Electric Company
Current Assets:
Cash and cash equivalents	0	199
Advances to money pool	0	36
Accounts receivable - trade (less allowance for doubtful accounts)	206	174
Accounts receivable - affiliates	15	54
Unbilled revenue	226	128
Miscellaneous accounts and notes receivable	52	78
Materials and supplies	396	387
Current regulatory assets	46	89
Other current assets	33	41
Total current assets	974	1,186
Property and Plant, Net	11,242	11,183
Investments and Other Assets:
Nuclear decommissioning trust fund	582	556
Regulatory assets	536	605
Other assets	315	321
Total investments and other assets	1,433	1,482
TOTAL ASSETS	13,649	13,851
Current Liabilities:
Current maturities of long-term debt	431	266
Short-term Debt	77	0
Accounts and wages payable	204	417
Accounts payable - affiliates	40	56
Taxes accrued	113	31
Interest accrued	68	59
Current regulatory liabilities	21	28
Other current liabilities	139	120
Total current liabilities	1,093	977
Long-term Debt, Net	3,568	3,844
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes, net	2,915	2,844
Accumulated deferred investment tax credits	55	58
Regulatory liabilities	1,197	1,172
Asset retirement obligations	623	612
Pension and other postretirement benefits	195	234
Other deferred credits and liabilities	24	28
Total deferred credits and other liabilities	5,009	4,948
Commitments and Contingencies
Stockholders' Equity:
Common Stock	511	511
Other paid-in capital	1,822	1,822
Preferred stock	80	80
Retained earnings	1,566	1,669
Stockholder's equity	3,979	4,082
TOTAL LIABILITIES AND EQUITY	13,649	13,851
Ameren Illinois Company
Current Assets:
Cash and cash equivalents	0	71
Accounts receivable - trade (less allowance for doubtful accounts)	225	204
Accounts receivable - affiliates	15	22
Unbilled revenue	102	111
Miscellaneous accounts and notes receivable	12	19
Materials and supplies	119	151
Current regulatory assets	98	167
Other current assets	11	15
Total current assets	582	760
Property and Plant, Net	7,121	6,848
Investments and Other Assets:
Goodwill	411	411
Regulatory assets	786	771
Other assets	99	113
Total investments and other assets	1,296	1,295
TOTAL ASSETS	8,999	8,903
Current Liabilities:
Current maturities of long-term debt	0	129
Short-term Debt	177	0
Accounts and wages payable	212	249
Accounts payable - affiliates	43	66
Taxes accrued	9	13
Interest accrued	29	28
Customer deposits	67	69
Mark-to-market derivative liabilities	23	45
Current environmental remediation	35	28
Current regulatory liabilities	59	39
Other current liabilities	88	86
Total current liabilities	742	752
Long-term Debt, Net	2,343	2,342
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes, net	1,546	1,480
Accumulated deferred investment tax credits	2	2
Regulatory liabilities	754	732
Pension and other postretirement benefits	284	271
Environmental remediation	183	205
Other deferred credits and liabilities	207	222
Total deferred credits and other liabilities	2,976	2,912
Commitments and Contingencies
Stockholders' Equity:
Common Stock	0	0
Other paid-in capital	2,005	2,005
Preferred stock	62	62
Retained earnings	868	825
Accumulated other comprehensive income (loss)	3	5
Stockholder's equity	2,938	2,897
TOTAL LIABILITIES AND EQUITY	$ 8,999	$ 8,903