Consolidated Balance Sheet - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Current Assets:
Cash and cash equivalents	$ 19	$ 25
Accounts receivable - trade (less allowance for doubtful accounts)	514	494
Unbilled revenue	407	319
Miscellaneous accounts receivable	62	106
Inventories	740	733
Current regulatory assets	345	365
Other current assets	130	139
Total current assets	2,217	2,181
Property, Plant, and Equipment, Net	34,873	33,776
Investments and Other Assets:
Nuclear decommissioning trust fund	1,266	1,150
Goodwill	411	411
Regulatory assets	1,952	1,810
Pension and other postretirement benefits	566	581
Other assets	1,049	921
Total investments and other assets	5,244	4,873
TOTAL ASSETS	42,334	40,830
Current Liabilities:
Current maturities of long-term debt	799	849
Short-term debt	691	536
Accounts and wages payable	774	1,136
Interest accrued	177	147
Customer deposits	197	176
Other current liabilities	655	501
Total current liabilities	3,293	3,345
Long-term Debt, Net	16,280	15,121
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes and tax credits, net	4,325	4,176
Regulatory liabilities	5,531	5,512
Asset retirement obligations	791	772
Other deferred credits and liabilities	446	426
Total deferred credits and other liabilities	11,093	10,886
Commitments and Contingencies
Shareholders’ Equity:
Common Stock	3	3
Other paid-in capital, principally premium on common stock	7,246	7,216
Retained earnings	4,299	4,136
Accumulated other comprehensive loss	(9)	(6)
Total shareholders’ equity	11,539	11,349
Noncontrolling Interests	129	129
Total equity	11,668	11,478
TOTAL LIABILITIES AND EQUITY	42,334	40,830
Union Electric Company
Current Assets:
Cash and cash equivalents	0	0
Unbilled revenue	271	163
Miscellaneous accounts receivable	30	26
Inventories	520	508
Current regulatory assets	124	101
Other current assets	63	68
Total current assets	1,286	1,142
Property, Plant, and Equipment, Net	17,938	17,250
Investments and Other Assets:
Nuclear decommissioning trust fund	1,266	1,150
Regulatory assets	733	755
Pension and other postretirement benefits	138	157
Other assets	194	152
Total investments and other assets	2,331	2,214
TOTAL ASSETS	21,555	20,606
Current Liabilities:
Current maturities of long-term debt	0	350
Short-term debt	390	170
Borrowings from money pool	0	306
Interest accrued	82	69
Taxes accrued	132	28
Other current liabilities	234	153
Total current liabilities	1,262	1,747
Long-term Debt, Net	6,830	5,991
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes and tax credits, net	2,196	2,122
Regulatory liabilities	2,925	2,959
Asset retirement obligations	788	768
Other deferred credits and liabilities	88	56
Total deferred credits and other liabilities	5,997	5,905
Commitments and Contingencies
Shareholders’ Equity:
Common Stock	511	511
Other paid-in capital, principally premium on common stock	3,075	2,725
Preferred stock	80	80
Retained earnings	3,800	3,647
Total shareholders’ equity	7,466	6,963
TOTAL LIABILITIES AND EQUITY	21,555	20,606
Union Electric Company | Nonrelated Party
Current Assets:
Accounts receivable - trade (less allowance for doubtful accounts)	211	204
Current Liabilities:
Accounts and wages payable	366	618
Union Electric Company | Related Party
Current Assets:
Accounts receivable - trade (less allowance for doubtful accounts)	67	72
Current Liabilities:
Accounts and wages payable	58	53
Ameren Illinois Company
Current Assets:
Cash and cash equivalents	6	0
Advances to money pool	30	0
Unbilled revenue	136	156
Miscellaneous accounts receivable	5	44
Inventories	216	225
Current regulatory assets	215	252
Other current assets	55	62
Total current assets	961	1,047
Property, Plant, and Equipment, Net	15,009	14,632
Investments and Other Assets:
Goodwill	411	411
Regulatory assets	1,189	1,035
Pension and other postretirement benefits	412	394
Other assets	656	603
Total investments and other assets	2,668	2,443
TOTAL ASSETS	18,638	18,122
Current Liabilities:
Current maturities of long-term debt	300	0
Short-term debt	0	366
Borrowings from money pool	0	135
Customer deposits	161	141
Zero emission credit liabilities	64	35
Current regulatory liabilities	58	71
Other current liabilities	219	263
Total current liabilities	1,196	1,433
Long-term Debt, Net	5,551	5,232
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes and tax credits, net	1,967	1,906
Regulatory liabilities	2,466	2,418
Other deferred credits and liabilities	319	308
Total deferred credits and other liabilities	4,752	4,632
Commitments and Contingencies
Shareholders’ Equity:
Common Stock	0	0
Other paid-in capital, principally premium on common stock	3,020	3,020
Preferred stock	49	49
Retained earnings	4,070	3,756
Total shareholders’ equity	7,139	6,825
TOTAL LIABILITIES AND EQUITY	18,638	18,122
Ameren Illinois Company | Nonrelated Party
Current Assets:
Accounts receivable - trade (less allowance for doubtful accounts)	287	273
Current Liabilities:
Accounts and wages payable	297	370
Ameren Illinois Company | Related Party
Current Assets:
Accounts receivable - trade (less allowance for doubtful accounts)	11	35
Current Liabilities:
Accounts and wages payable	$ 97	$ 52