Consolidated Balance Sheet - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 18	$ 292
Accounts receivable - trade (less allowance for doubtful accounts)	543	388
Unbilled revenue	240	239
Miscellaneous accounts and notes receivable	49	98
Materials and supplies	551	538
Current regulatory assets	107	260
Other current assets	76	88
Assets of discontinued operations	15	14
Total current assets	1,599	1,917
Property and Plant, Net	19,647	18,799
Investments and Other Assets:
Nuclear decommissioning trust fund	599	556
Goodwill	411	411
Regulatory assets	1,312	1,382
Other assets	566	575
Total investments and other assets	2,888	2,924
TOTAL ASSETS	24,134	23,640
Current Liabilities:
Current maturities of long-term debt	431	395
Short-term Debt	608	301
Accounts and wages payable	513	777
Taxes accrued	159	43
Interest accrued	110	89
Customer deposits	104	100
Current regulatory liabilities	87	80
Other current liabilities	252	279
Liabilities of discontinued operations	27	29
Total current liabilities	2,291	2,093
Long-term Debt, Net	6,607	6,880
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes, net	4,255	3,885
Accumulated deferred investment tax credits	56	60
Regulatory liabilities	1,974	1,905
Asset retirement obligations	636	618
Pension and other postretirement benefits	499	580
Other deferred credits and liabilities	481	531
Total deferred credits and other liabilities	7,901	7,579
Commitments and Contingencies
Stockholders' Equity:
Common Stock	2	2
Other paid-in capital	5,550	5,616
Retained earnings	1,643	1,331
Accumulated other comprehensive income (loss)	(2)	(3)
Stockholder's equity	7,193	6,946
Noncontrolling Interest	142	142
Total equity	7,335	7,088
TOTAL LIABILITIES AND EQUITY	24,134	23,640
Union Electric Company
Current Assets:
Cash and cash equivalents	1	199
Advances to money pool	201	36
Accounts receivable - trade (less allowance for doubtful accounts)	272	174
Accounts receivable - affiliates	20	54
Unbilled revenue	144	128
Miscellaneous accounts and notes receivable	33	78
Materials and supplies	392	387
Current regulatory assets	47	89
Other current assets	37	41
Total current assets	1,147	1,186
Property and Plant, Net	11,294	11,183
Investments and Other Assets:
Nuclear decommissioning trust fund	599	556
Regulatory assets	514	605
Other assets	335	321
Total investments and other assets	1,448	1,482
TOTAL ASSETS	13,889	13,851
Current Liabilities:
Current maturities of long-term debt	431	266
Short-term Debt	0	0
Accounts and wages payable	209	417
Accounts payable - affiliates	89	56
Taxes accrued	149	31
Interest accrued	66	59
Current regulatory liabilities	11	28
Other current liabilities	116	120
Total current liabilities	1,071	977
Long-term Debt, Net	3,569	3,844
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes, net	3,003	2,844
Accumulated deferred investment tax credits	54	58
Regulatory liabilities	1,211	1,172
Asset retirement obligations	630	612
Pension and other postretirement benefits	183	234
Other deferred credits and liabilities	21	28
Total deferred credits and other liabilities	5,102	4,948
Commitments and Contingencies
Stockholders' Equity:
Common Stock	511	511
Other paid-in capital	1,824	1,822
Preferred stock	80	80
Retained earnings	1,732	1,669
Stockholder's equity	4,147	4,082
TOTAL LIABILITIES AND EQUITY	13,889	13,851
Ameren Illinois Company
Current Assets:
Cash and cash equivalents	3	71
Accounts receivable - trade (less allowance for doubtful accounts)	259	204
Accounts receivable - affiliates	13	22
Unbilled revenue	96	111
Miscellaneous accounts and notes receivable	11	19
Materials and supplies	159	151
Current regulatory assets	59	167
Other current assets	17	15
Total current assets	617	760
Property and Plant, Net	7,285	6,848
Investments and Other Assets:
Goodwill	411	411
Regulatory assets	791	771
Other assets	98	113
Total investments and other assets	1,300	1,295
TOTAL ASSETS	9,202	8,903
Current Liabilities:
Current maturities of long-term debt	0	129
Short-term Debt	157	0
Due to Related Parties, Current	54	0
Accounts and wages payable	214	249
Accounts payable - affiliates	59	66
Taxes accrued	8	13
Interest accrued	40	28
Customer deposits	68	69
Mark-to-market derivative liabilities	21	45
Current environmental remediation	35	28
Current regulatory liabilities	56	39
Other current liabilities	99	86
Total current liabilities	811	752
Long-term Debt, Net	2,344	2,342
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes, net	1,618	1,480
Accumulated deferred investment tax credits	2	2
Regulatory liabilities	761	732
Pension and other postretirement benefits	262	271
Environmental remediation	171	205
Other deferred credits and liabilities	212	222
Total deferred credits and other liabilities	3,026	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	952	825
Accumulated other comprehensive income (loss)	2	5
Stockholder's equity	3,021	2,897
TOTAL LIABILITIES AND EQUITY	$ 9,202	$ 8,903