Consolidated Balance Sheet - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Current Assets:
Cash and cash equivalents	$ 29	$ 10
Accounts receivable - trade (less allowance for doubtful accounts)	560	445
Unbilled revenue	371	323
Miscellaneous accounts and notes receivable	74	70
Inventories	475	522
Current regulatory assets	104	144
Other current assets	72	98
Total current assets	1,685	1,612
Property, Plant, and Equipment, Net	21,998	21,466
Investments and Other Assets:
Nuclear decommissioning trust fund	714	704
Goodwill	411	411
Regulatory assets	1,205	1,230
Other assets	626	522
Total investments and other assets	2,956	2,867
TOTAL ASSETS	26,639	25,945
Current Liabilities:
Current maturities of long-term debt	847	841
Short-term Debt	506	484
Accounts and wages payable	565	902
Taxes accrued	139	52
Interest accrued	109	99
Customer deposits	114	108
Current regulatory liabilities	133	128
Other current liabilities	298	326
Total current liabilities	2,711	2,940
Long-term Debt, Net	7,613	7,094
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes, net	2,584	2,506
Accumulated Deferred Investment Tax Credit	46	49
Regulatory Liability, Noncurrent	4,540	4,387
Asset retirement obligations	641	638
Pension and other postretirement benefits	545	545
Other deferred credits and liabilities	431	460
Total deferred credits and other liabilities	8,787	8,585
Commitments and Contingencies
Stockholders' Equity:
Common Stock	2	2
Other paid-in capital	5,576	5,540
Retained earnings	1,827	1,660
Accumulated other comprehensive loss	(19)	(18)
Stockholder's equity	7,386	7,184
Noncontrolling Interest	142	142
Total equity	7,528	7,326
TOTAL LIABILITIES AND EQUITY	26,639	25,945
Union Electric Company
Current Assets:
Cash and cash equivalents	17	0
Due from Related Parties, Current	66	0
Accounts receivable - trade (less allowance for doubtful accounts)	285	200
Accounts receivable - affiliates	23	11
Unbilled revenue	256	165
Miscellaneous accounts and notes receivable	55	35
Inventories	380	388
Current regulatory assets	48	56
Other current assets	42	50
Total current assets	1,172	905
Property, Plant, and Equipment, Net	11,835	11,751
Investments and Other Assets:
Nuclear decommissioning trust fund	714	704
Regulatory assets	367	395
Other assets	304	288
Total investments and other assets	1,385	1,387
TOTAL ASSETS	14,392	14,043
Current Liabilities:
Current maturities of long-term debt	534	384
Short-term Debt	0	39
Accounts and wages payable	226	475
Accounts payable - affiliates	125	60
Taxes accrued	110	30
Interest accrued	69	54
Current regulatory liabilities	50	19
Other current liabilities	107	103
Total current liabilities	1,221	1,164
Long-term Debt, Net	3,668	3,577
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes, net	1,614	1,650
Accumulated Deferred Investment Tax Credit	45	48
Regulatory Liability, Noncurrent	2,754	2,664
Asset retirement obligations	637	634
Pension and other postretirement benefits	209	213
Other deferred credits and liabilities	7	12
Total deferred credits and other liabilities	5,266	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	1,788	1,632
Stockholder's equity	4,237	4,081
TOTAL LIABILITIES AND EQUITY	14,392	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	21	9
Unbilled revenue	115	158
Miscellaneous accounts and notes receivable	29	35
Inventories	95	134
Current regulatory assets	55	87
Other current assets	10	15
Total current assets	576	672
Property, Plant, and Equipment, Net	8,716	8,293
Investments and Other Assets:
Goodwill	411	411
Regulatory assets	822	822
Other assets	246	147
Total investments and other assets	1,479	1,380
TOTAL ASSETS	10,771	10,345
Current Liabilities:
Current maturities of long-term debt	313	457
Short-term Debt	0	62
Due to Related Parties, Current	31	0
Accounts and wages payable	291	337
Accounts payable - affiliates	44	70
Taxes accrued	15	19
Interest accrued	30	33
Customer deposits	75	69
Current environmental remediation	43	42
Current regulatory liabilities	65	92
Other current liabilities	150	177
Total current liabilities	1,057	1,358
Long-term Debt, Net	2,800	2,373
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes, net	1,045	1,021
Regulatory Liability, Noncurrent	1,689	1,629
Pension and other postretirement benefits	292	285
Environmental remediation	123	134
Other deferred credits and liabilities	218	235
Total deferred credits and other liabilities	3,367	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	1,392	1,235
Stockholder's equity	3,547	3,310
TOTAL LIABILITIES AND EQUITY	$ 10,771	$ 10,345