Consolidated Balance Sheet - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Current Assets:
Cash and cash equivalents	$ 10	$ 9
Accounts receivable - trade (less allowance for doubtful accounts)	446	437
Unbilled revenue	334	295
Miscellaneous accounts and notes receivable	77	63
Inventories	512	527
Current regulatory assets	95	149
Other current assets	97	113
Total current assets	1,571	1,593
Property and Plant, Net	20,589	20,113
Investments and Other Assets:
Nuclear decommissioning trust fund	651	607
Goodwill	411	411
Regulatory assets	1,506	1,437
Other assets	526	538
Total investments and other assets	3,094	2,993
TOTAL ASSETS	25,254	24,699
Current Liabilities:
Current maturities of long-term debt	578	681
Short-term Debt	892	558
Accounts and wages payable	522	805
Taxes accrued	122	46
Interest accrued	104	93
Customer deposits	108	107
Current regulatory liabilities	141	110
Other current liabilities	298	274
Total current liabilities	2,765	2,674
Long-term Debt, Net	6,821	6,595
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes, net	4,444	4,264
Accumulated deferred investment tax credits	52	55
Regulatory liabilities	2,003	1,985
Asset retirement obligations	634	635
Pension and other postretirement benefits	758	769
Other deferred credits and liabilities	477	477
Total deferred credits and other liabilities	8,368	8,185
Commitments and Contingencies
Stockholders' Equity:
Common Stock	2	2
Other paid-in capital	5,528	5,556
Retained earnings	1,649	1,568
Accumulated other comprehensive income (loss)	(21)	(23)
Stockholder's equity	7,158	7,103
Noncontrolling Interest	142	142
Total equity	7,300	7,245
TOTAL LIABILITIES AND EQUITY	25,254	24,699
Union Electric Company
Current Assets:
Cash and cash equivalents	0	0
Advances to money pool	0	161
Accounts receivable - trade (less allowance for doubtful accounts)	212	187
Accounts receivable - affiliates	15	12
Unbilled revenue	230	154
Miscellaneous accounts and notes receivable	34	14
Inventories	399	392
Current regulatory assets	17	35
Other current assets	43	49
Total current assets	950	1,004
Property and Plant, Net	11,497	11,478
Investments and Other Assets:
Nuclear decommissioning trust fund	651	607
Regulatory assets	590	619
Other assets	317	327
Total investments and other assets	1,558	1,553
TOTAL ASSETS	14,005	14,035
Current Liabilities:
Current maturities of long-term debt	185	431
Short-term Debt	60	0
Accounts and wages payable	208	444
Accounts payable - affiliates	122	68
Taxes accrued	113	30
Interest accrued	67	54
Current regulatory liabilities	29	12
Other current liabilities	130	123
Total current liabilities	914	1,162
Long-term Debt, Net	3,781	3,563
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes, net	3,030	3,013
Accumulated deferred investment tax credits	50	53
Regulatory liabilities	1,255	1,215
Asset retirement obligations	629	629
Pension and other postretirement benefits	287	291
Other deferred credits and liabilities	16	19
Total deferred credits and other liabilities	5,267	5,220
Commitments and Contingencies
Stockholders' Equity:
Common Stock	511	511
Other paid-in capital	1,828	1,828
Preferred stock	80	80
Retained earnings	1,624	1,671
Stockholder's equity	4,043	4,090
TOTAL LIABILITIES AND EQUITY	14,005	14,035
Ameren Illinois Company
Current Assets:
Cash and cash equivalents	0	0
Accounts receivable - trade (less allowance for doubtful accounts)	219	242
Accounts receivable - affiliates	69	10
Unbilled revenue	104	141
Miscellaneous accounts and notes receivable	14	22
Inventories	114	135
Current regulatory assets	75	108
Other current assets	11	25
Total current assets	606	683
Property and Plant, Net	7,780	7,469
Investments and Other Assets:
Goodwill	411	411
Regulatory assets	907	816
Other assets	97	95
Total investments and other assets	1,415	1,322
TOTAL ASSETS	9,801	9,474
Current Liabilities:
Current maturities of long-term debt	394	250
Short-term Debt	159	51
Accounts and wages payable	236	264
Accounts payable - affiliates	55	63
Taxes accrued	7	16
Interest accrued	31	33
Customer deposits	69	69
Current environmental remediation	37	38
Current regulatory liabilities	95	78
Other current liabilities	128	109
Total current liabilities	1,211	971
Long-term Debt, Net	2,195	2,338
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes, net	1,748	1,631
Accumulated deferred investment tax credits	2	2
Regulatory liabilities	745	768
Pension and other postretirement benefits	350	346
Environmental remediation	152	162
Other deferred credits and liabilities	228	222
Total deferred credits and other liabilities	3,225	3,131
Commitments and Contingencies
Stockholders' Equity:
Common Stock	0	0
Other paid-in capital	2,005	2,005
Preferred stock	62	62
Retained earnings	1,103	967
Stockholder's equity	3,170	3,034
TOTAL LIABILITIES AND EQUITY	$ 9,801	$ 9,474