Consolidated Balance Sheet - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Current Assets:
Cash and cash equivalents	$ 7	$ 8
Accounts receivable - trade (less allowance for doubtful accounts)	560	434
Unbilled revenue	283	301
Miscellaneous accounts receivable	87	85
Inventories	520	592
Mark-to-market derivative assets	137	66
Current regulatory assets	244	319
Current collateral assets	110	66
Other current assets	83	97
Total current assets	2,031	1,968
Property, Plant, and Equipment, Net	29,578	29,261
Investments and Other Assets:
Nuclear decommissioning trust fund	1,094	1,159
Goodwill	411	411
Regulatory assets	1,377	1,289
Pension and other postretirement benefits	772	756
Other assets	934	891
Total investments and other assets	4,588	4,506
TOTAL ASSETS	36,197	35,735
Current Liabilities:
Current maturities of long-term debt	505	505
Short-term debt	1,101	545
Accounts and wages payable	690	1,095
Current regulatory liabilities	219	113
Other current liabilities	630	568
Total current liabilities	3,145	2,826
Long-term Debt, Net	12,563	12,562
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes and tax credits, net	3,550	3,499
Regulatory liabilities	5,841	5,848
Asset retirement obligations	769	757
Other deferred credits and liabilities	394	414
Total deferred credits and other liabilities	10,554	10,518
Commitments and Contingencies
Shareholders’ Equity:
Common Stock	3	3
Other paid-in capital, principally premium on common stock	6,507	6,502
Retained earnings	3,282	3,182
Accumulated other comprehensive income	14	13
Total shareholders’ equity	9,806	9,700
Noncontrolling Interests	129	129
Total equity	9,935	9,829
TOTAL LIABILITIES AND EQUITY	36,197	35,735
Union Electric Company
Current Assets:
Cash and cash equivalents	1	0
Accounts receivable - trade (less allowance for doubtful accounts)	190	190
Accounts receivable – affiliates	47	44
Unbilled revenue	134	142
Miscellaneous accounts receivable	57	71
Inventories	414	419
Current regulatory assets	141	127
Current collateral assets	110	66
Other current assets	86	76
Total current assets	1,180	1,135
Property, Plant, and Equipment, Net	15,434	15,296
Investments and Other Assets:
Nuclear decommissioning trust fund	1,094	1,159
Regulatory assets	582	523
Pension and other postretirement benefits	212	208
Other assets	418	401
Total investments and other assets	2,306	2,291
TOTAL ASSETS	18,920	18,722
Current Liabilities:
Current maturities of long-term debt	55	55
Short-term debt	528	165
Accounts and wages payable	342	631
Accounts payable – affiliates	36	46
Taxes accrued	80	34
Mark-to-market derivative liabilities	109	53
Current regulatory liabilities	101	58
Other current liabilities	159	175
Total current liabilities	1,410	1,217
Long-term Debt, Net	5,564	5,564
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes and tax credits, net	1,866	1,852
Regulatory liabilities	3,278	3,354
Asset retirement obligations	765	753
Other deferred credits and liabilities	76	71
Total deferred credits and other liabilities	5,985	6,030
Commitments and Contingencies
Shareholders’ Equity:
Common Stock	511	511
Other paid-in capital, principally premium on common stock	2,725	2,725
Preferred stock	80	80
Retained earnings	2,645	2,595
Total shareholders’ equity	5,961	5,911
TOTAL LIABILITIES AND EQUITY	18,920	18,722
Ameren Illinois Company
Current Assets:
Cash and cash equivalents	0	0
Accounts receivable - trade (less allowance for doubtful accounts)	356	228
Accounts receivable – affiliates	12	24
Unbilled revenue	149	159
Miscellaneous accounts receivable	12	1
Inventories	106	173
Mark-to-market derivative assets	79	28
Current regulatory assets	93	180
Other current assets	26	30
Total current assets	833	823
Property, Plant, and Equipment, Net	12,396	12,223
Investments and Other Assets:
Goodwill	411	411
Regulatory assets	780	752
Pension and other postretirement benefits	435	427
Other assets	436	399
Total investments and other assets	2,062	1,989
TOTAL ASSETS	15,291	15,035
Current Liabilities:
Current maturities of long-term debt	400	400
Short-term debt	107	103
Accounts and wages payable	286	361
Accounts payable – affiliates	80	64
Current regulatory liabilities	118	54
Other current liabilities	251	251
Total current liabilities	1,242	1,233
Long-term Debt, Net	3,993	3,992
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes and tax credits, net	1,593	1,558
Regulatory liabilities	2,442	2,374
Other deferred credits and liabilities	212	238
Total deferred credits and other liabilities	4,247	4,170
Commitments and Contingencies
Shareholders’ Equity:
Common Stock	0	0
Other paid-in capital, principally premium on common stock	2,914	2,914
Preferred stock	49	49
Retained earnings	2,846	2,677
Total shareholders’ equity	5,809	5,640
TOTAL LIABILITIES AND EQUITY	$ 15,291	$ 15,035