Consolidated Balance Sheet - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Current Assets:
Cash and cash equivalents	$ 10	$ 10
Accounts receivable - trade (less allowance for doubtful accounts)	625	600
Unbilled revenue	299	446
Miscellaneous accounts receivable	62	54
Inventories	630	667
Current regulatory assets	292	354
Current collateral assets	29	142
Other current assets	115	155
Total current assets	2,062	2,668
Property, Plant, and Equipment, Net	31,735	31,262
Investments and Other Assets:
Nuclear decommissioning trust fund	1,019	958
Goodwill	411	411
Regulatory assets	1,599	1,426
Pension and other postretirement benefits	423	411
Other assets	815	768
Total investments and other assets	4,267	3,974
TOTAL ASSETS	38,064	37,904
Current Liabilities:
Current maturities of long-term debt	100	340
Short-term debt	1,248	1,070
Accounts and wages payable	664	1,159
Other current liabilities	745	797
Total current liabilities	2,757	3,366
Long-term Debt, Net	14,181	13,685
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes and tax credits, net	3,856	3,804
Regulatory liabilities	5,395	5,309
Asset retirement obligations	769	763
Other deferred credits and liabilities	370	340
Total deferred credits and other liabilities	10,390	10,216
Commitments and Contingencies
Shareholders’ Equity:
Common Stock	3	3
Other paid-in capital, principally premium on common stock	6,861	6,860
Retained earnings	3,745	3,646
Accumulated other comprehensive loss	(2)	(1)
Total shareholders’ equity	10,607	10,508
Noncontrolling Interests	129	129
Total equity	10,736	10,637
TOTAL LIABILITIES AND EQUITY	38,064	37,904
Investments in industrial development revenue bonds	0	240
Union Electric Company
Current Assets:
Cash and cash equivalents	3	0
Accounts receivable - trade (less allowance for doubtful accounts)	205	244
Accounts receivable – affiliates	70	51
Unbilled revenue	148	184
Miscellaneous accounts receivable	18	18
Inventories	475	434
Current regulatory assets	194	254
Current collateral assets	29	101
Other current assets	40	66
Total current assets	1,182	1,592
Property, Plant, and Equipment, Net	16,326	16,124
Investments and Other Assets:
Nuclear decommissioning trust fund	1,019	958
Regulatory assets	628	594
Pension and other postretirement benefits	102	98
Other assets	136	140
Total investments and other assets	1,885	1,790
TOTAL ASSETS	19,393	19,506
Current Liabilities:
Current maturities of long-term debt	0	240
Short-term debt	197	329
Accounts and wages payable	294	606
Accounts payable – affiliates	36	43
Taxes accrued	76	29
Interest accrued	50	63
Other current liabilities	187	260
Total current liabilities	840	1,570
Long-term Debt, Net	6,341	5,846
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes and tax credits, net	2,003	1,982
Regulatory liabilities	2,934	2,871
Asset retirement obligations	765	759
Other deferred credits and liabilities	55	51
Total deferred credits and other liabilities	5,757	5,663
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	3,139	3,111
Total shareholders’ equity	6,455	6,427
TOTAL LIABILITIES AND EQUITY	19,393	19,506
Investments in industrial development revenue bonds	0	240
Ameren Illinois Company
Current Assets:
Cash and cash equivalents	0	0
Accounts receivable - trade (less allowance for doubtful accounts)	406	341
Accounts receivable – affiliates	14	12
Unbilled revenue	151	262
Miscellaneous accounts receivable	32	23
Inventories	155	233
Current regulatory assets	89	87
Other current assets	36	98
Total current assets	883	1,056
Property, Plant, and Equipment, Net	13,602	13,353
Investments and Other Assets:
Goodwill	411	411
Regulatory assets	954	821
Pension and other postretirement benefits	324	318
Other assets	510	482
Total investments and other assets	2,199	2,032
TOTAL ASSETS	16,684	16,441
Current Liabilities:
Current maturities of long-term debt	100	100
Short-term debt	324	264
Accounts and wages payable	304	451
Accounts payable – affiliates	117	93
Other current liabilities	398	383
Total current liabilities	1,243	1,291
Long-term Debt, Net	4,736	4,735
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes and tax credits, net	1,744	1,699
Regulatory liabilities	2,334	2,313
Other deferred credits and liabilities	261	235
Total deferred credits and other liabilities	4,339	4,247
Commitments and Contingencies
Shareholders’ Equity:
Common Stock	0	0
Other paid-in capital, principally premium on common stock	2,929	2,929
Preferred stock	49	49
Retained earnings	3,388	3,190
Total shareholders’ equity	6,366	6,168
TOTAL LIABILITIES AND EQUITY	$ 16,684	$ 16,441