Consolidated Balance Sheet - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Current Assets:
Cash and cash equivalents	$ 42	$ 16
Accounts receivable - trade (less allowance for doubtful accounts)	456	393
Unbilled revenue	212	278
Miscellaneous accounts receivable	65	63
Inventories	471	494
Current regulatory assets	91	69
Other current assets	127	118
Total current assets	1,464	1,431
Property, Plant, and Equipment, Net	24,678	24,376
Investments and Other Assets:
Nuclear decommissioning trust fund	742	847
Goodwill	411	411
Regulatory assets	1,092	992
Other assets	885	876
Total investments and other assets	3,130	3,126
TOTAL ASSETS	29,272	28,933
Current Liabilities:
Current maturities of long-term debt	357	442
Short-term Debt	615	440
Accounts and wages payable	544	874
Current regulatory liabilities	189	164
Other current liabilities	662	585
Total current liabilities	2,367	2,505
Long-term Debt, Net	9,378	8,915
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes, net	2,948	2,919
Regulatory liabilities	4,842	4,887
Asset retirement obligations	631	638
Pension and other postretirement benefits	397	401
Other deferred credits and liabilities	482	467
Total deferred credits and other liabilities	9,300	9,312
Commitments and Contingencies
Stockholders' Equity:
Common Stock	2	2
Other paid-in capital	5,695	5,694
Retained earnings	2,404	2,380
Accumulated other comprehensive income (loss)	(16)	(17)
Shareholder's equity	8,085	8,059
Noncontrolling Interest	142	142
Total equity	8,227	8,201
TOTAL LIABILITIES AND EQUITY	29,272	28,933
Union Electric Company
Current Assets:
Cash and cash equivalents	3	9
Accounts receivable - trade (less allowance for doubtful accounts)	174	164
Accounts receivable - affiliates	34	30
Unbilled revenue	117	139
Miscellaneous accounts receivable	43	33
Inventories	391	373
Other current assets	96	66
Total current assets	858	814
Property, Plant, and Equipment, Net	12,731	12,635
Investments and Other Assets:
Nuclear decommissioning trust fund	742	847
Regulatory assets	305	285
Other assets	357	356
Total investments and other assets	1,404	1,488
TOTAL ASSETS	14,993	14,937
Current Liabilities:
Current maturities of long-term debt	7	92
Short-term Debt	130	234
Accounts and wages payable	238	465
Accounts payable - affiliates	48	52
Taxes accrued	64	24
Interest accrued	46	48
Current asset retirement obligation	53	53
Current regulatory liabilities	80	62
Other current liabilities	128	96
Total current liabilities	794	1,126
Long-term Debt, Net	4,560	4,098
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes, net	1,627	1,612
Regulatory liabilities	2,855	2,937
Asset retirement obligations	627	634
Pension and other postretirement benefits	139	141
Other deferred credits and liabilities	52	40
Total deferred credits and other liabilities	5,300	5,364
Commitments and Contingencies
Stockholders' Equity:
Common Stock	511	511
Other paid-in capital	2,027	2,027
Preferred stock	80	80
Retained earnings	1,721	1,731
Shareholder's equity	4,339	4,349
TOTAL LIABILITIES AND EQUITY	14,993	14,937
Ameren Illinois Company
Current Assets:
Cash and cash equivalents	6	0
Accounts receivable - trade (less allowance for doubtful accounts)	268	215
Accounts receivable - affiliates	15	28
Unbilled revenue	95	139
Miscellaneous accounts receivable	19	25
Inventories	80	121
Current regulatory assets	57	57
Other current assets	31	29
Total current assets	571	614
Property, Plant, and Equipment, Net	10,280	10,083
Investments and Other Assets:
Goodwill	411	411
Regulatory assets	771	694
Other assets	400	383
Total investments and other assets	1,582	1,488
TOTAL ASSETS	12,433	12,185
Current Liabilities:
Short-term Debt	60	53
Accounts and wages payable	246	299
Accounts payable - affiliates	84	82
Customer deposits	80	77
Current environmental remediation	52	42
Current regulatory liabilities	90	84
Other current liabilities	195	207
Total current liabilities	807	844
Long-term Debt, Net	3,575	3,575
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes, net	1,251	1,224
Regulatory liabilities	1,884	1,849
Pension and other postretirement benefits	212	214
Environmental remediation	75	87
Other deferred credits and liabilities	277	260
Total deferred credits and other liabilities	3,699	3,634
Commitments and Contingencies
Stockholders' Equity:
Common Stock	0	0
Other paid-in capital	2,288	2,188
Preferred stock	62	62
Retained earnings	2,002	1,882
Shareholder's equity	4,352	4,132
TOTAL LIABILITIES AND EQUITY	$ 12,433	$ 12,185