Consolidated Balance Sheet - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Current Assets:
Cash and cash equivalents	$ 11	$ 10
Accounts receivable - trade (less allowance for doubtful accounts)	605	445
Unbilled revenue	260	323
Miscellaneous accounts and notes receivable	84	70
Inventories	525	522
Current regulatory assets	72	144
Other current assets	83	98
Total current assets	1,640	1,612
Property, Plant, and Equipment, Net	22,379	21,466
Investments and Other Assets:
Nuclear decommissioning trust fund	752	704
Goodwill	411	411
Regulatory assets	1,130	1,230
Other assets	647	522
Total investments and other assets	2,940	2,867
TOTAL ASSETS	26,959	25,945
Current Liabilities:
Current maturities of long-term debt	649	841
Short-term Debt	521	484
Accounts and wages payable	591	902
Taxes accrued	154	52
Interest accrued	108	99
Contract with Customer, Liability, Current	126	108
Current regulatory liabilities	114	128
Other current liabilities	317	326
Total current liabilities	2,580	2,940
Long-term Debt, Net	7,614	7,094
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes, net	2,692	2,506
Accumulated Deferred Investment Tax Credit	45	49
Regulatory Liability, Noncurrent	4,652	4,387
Asset retirement obligations	640	638
Pension and other postretirement benefits	529	545
Other deferred credits and liabilities	409	460
Total deferred credits and other liabilities	8,967	8,585
Commitments and Contingencies
Stockholders' Equity:
Common Stock	2	2
Other paid-in capital	5,598	5,540
Retained earnings	2,073	1,660
Accumulated other comprehensive loss	(17)	(18)
Stockholder's equity	7,656	7,184
Noncontrolling Interest	142	142
Total equity	7,798	7,326
TOTAL LIABILITIES AND EQUITY	26,959	25,945
Union Electric Company
Current Assets:
Cash and cash equivalents	0	0
Due from Related Parties, Current	28	0
Accounts receivable - trade (less allowance for doubtful accounts)	331	200
Accounts receivable - affiliates	16	11
Unbilled revenue	153	165
Miscellaneous accounts and notes receivable	61	35
Inventories	385	388
Current regulatory assets	28	56
Other current assets	40	50
Total current assets	1,042	905
Property, Plant, and Equipment, Net	11,933	11,751
Investments and Other Assets:
Nuclear decommissioning trust fund	752	704
Regulatory assets	351	395
Other assets	305	288
Total investments and other assets	1,408	1,387
TOTAL ASSETS	14,383	14,043
Current Liabilities:
Current maturities of long-term debt	336	384
Short-term Debt	0	39
Accounts and wages payable	246	475
Accounts payable - affiliates	90	60
Taxes accrued	138	30
Interest accrued	62	54
Current regulatory liabilities	48	19
Other current liabilities	115	103
Total current liabilities	1,035	1,164
Long-term Debt, Net	3,668	3,577
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes, net	1,636	1,650
Accumulated Deferred Investment Tax Credit	44	48
Regulatory Liability, Noncurrent	2,799	2,664
Asset retirement obligations	636	634
Pension and other postretirement benefits	204	213
Other deferred credits and liabilities	5	12
Total deferred credits and other liabilities	5,324	5,221
Commitments and Contingencies
Stockholders' Equity:
Common Stock	511	511
Other paid-in capital	1,858	1,858
Preferred stock	80	80
Retained earnings	1,907	1,632
Stockholder's equity	4,356	4,081
TOTAL LIABILITIES AND EQUITY	14,383	14,043
Ameren Illinois Company
Current Assets:
Cash and cash equivalents	0	0
Accounts receivable - trade (less allowance for doubtful accounts)	251	234
Accounts receivable - affiliates	36	9
Unbilled revenue	107	158
Miscellaneous accounts and notes receivable	33	35
Inventories	140	134
Current regulatory assets	44	87
Other current assets	18	15
Total current assets	629	672
Property, Plant, and Equipment, Net	8,969	8,293
Investments and Other Assets:
Goodwill	411	411
Regulatory assets	743	822
Other assets	258	147
Total investments and other assets	1,412	1,380
TOTAL ASSETS	11,010	10,345
Current Liabilities:
Current maturities of long-term debt	313	457
Short-term Debt	108	62
Due to Related Parties, Current	45	0
Accounts and wages payable	275	337
Accounts payable - affiliates	44	70
Taxes accrued	15	19
Interest accrued	39	33
Contract with Customer, Liability, Current	84	69
Current environmental remediation	50	42
Current regulatory liabilities	48	92
Other current liabilities	161	177
Total current liabilities	1,182	1,358
Long-term Debt, Net	2,801	2,373
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes, net	1,081	1,021
Regulatory Liability, Noncurrent	1,732	1,629
Pension and other postretirement benefits	284	285
Environmental remediation	113	134
Other deferred credits and liabilities	207	235
Total deferred credits and other liabilities	3,417	3,304
Commitments and Contingencies
Stockholders' Equity:
Common Stock	0	0
Other paid-in capital	2,093	2,013
Preferred stock	62	62
Retained earnings	1,455	1,235
Stockholder's equity	3,610	3,310
TOTAL LIABILITIES AND EQUITY	$ 11,010	$ 10,345