Consolidated Balance Sheet - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Current Assets:
Cash and cash equivalents	$ 7	$ 10
Accounts receivable - trade (less allowance for doubtful accounts)	482	600
Unbilled revenue	378	446
Miscellaneous accounts receivable	63	54
Inventories	711	667
Current regulatory assets	239	354
Investment in industrial development revenue bonds	0	240
Current collateral assets	20	142
Other current assets	119	155
Total current assets	2,019	2,668
Property, Plant, and Equipment, Net	32,351	31,262
Investments and Other Assets:
Nuclear decommissioning trust fund	1,075	958
Goodwill	411	411
Regulatory assets	1,790	1,426
Pension and other postretirement benefits	442	411
Other assets	859	768
Total investments and other assets	4,577	3,974
TOTAL ASSETS	38,947	37,904
Current Liabilities:
Current maturities of long-term debt	350	340
Short-term debt	1,329	1,070
Accounts and wages payable	719	1,159
Other current liabilities	845	797
Total current liabilities	3,243	3,366
Long-term Debt, Net	14,328	13,685
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes and tax credits, net	3,913	3,804
Regulatory liabilities	5,445	5,309
Asset retirement obligations	775	763
Other deferred credits and liabilities	417	340
Total deferred credits and other liabilities	10,550	10,216
Commitments and Contingencies
Shareholders’ Equity:
Common Stock	3	3
Other paid-in capital, principally premium on common stock	6,880	6,860
Retained earnings	3,817	3,646
Accumulated other comprehensive loss	(3)	(1)
Total shareholders’ equity	10,697	10,508
Noncontrolling Interests	129	129
Total equity	10,826	10,637
TOTAL LIABILITIES AND EQUITY	38,947	37,904
Union Electric Company
Current Assets:
Cash and cash equivalents	0	0
Unbilled revenue	248	184
Miscellaneous accounts receivable	19	18
Inventories	515	434
Current regulatory assets	144	254
Investment in industrial development revenue bonds	0	240
Current collateral assets	20	101
Other current assets	44	66
Total current assets	1,224	1,592
Property, Plant, and Equipment, Net	16,560	16,124
Investments and Other Assets:
Nuclear decommissioning trust fund	1,075	958
Regulatory assets	676	594
Pension and other postretirement benefits	111	98
Other assets	138	140
Total investments and other assets	2,000	1,790
TOTAL ASSETS	19,784	19,506
Current Liabilities:
Current maturities of long-term debt	350	240
Short-term debt	373	329
Taxes accrued	127	29
Other current liabilities	253	323
Total current liabilities	1,418	1,570
Long-term Debt, Net	5,991	5,846
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes and tax credits, net	2,015	1,982
Regulatory liabilities	2,972	2,871
Asset retirement obligations	771	759
Other deferred credits and liabilities	60	51
Total deferred credits and other liabilities	5,818	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	3,241	3,111
Total shareholders’ equity	6,557	6,427
TOTAL LIABILITIES AND EQUITY	19,784	19,506
Union Electric Company | Nonrelated Party
Current Assets:
Accounts receivable - trade (less allowance for doubtful accounts)	185	244
Current Liabilities:
Accounts and wages payable	275	606
Union Electric Company | Related Party
Current Assets:
Accounts receivable - trade (less allowance for doubtful accounts)	49	51
Current Liabilities:
Accounts and wages payable	40	43
Ameren Illinois Company
Current Assets:
Cash and cash equivalents	0	0
Unbilled revenue	130	262
Miscellaneous accounts receivable	29	23
Inventories	196	233
Current regulatory assets	88	87
Other current assets	36	98
Total current assets	770	1,056
Property, Plant, and Equipment, Net	13,955	13,353
Investments and Other Assets:
Goodwill	411	411
Regulatory assets	1,091	821
Pension and other postretirement benefits	335	318
Other assets	548	482
Total investments and other assets	2,385	2,032
TOTAL ASSETS	17,110	16,441
Current Liabilities:
Current maturities of long-term debt	0	100
Short-term debt	117	264
Customer deposits	111	87
Regulatory Liability, Current	82	64
Other current liabilities	212	232
Total current liabilities	947	1,291
Long-term Debt, Net	5,232	4,735
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes and tax credits, net	1,783	1,699
Regulatory liabilities	2,344	2,313
Other deferred credits and liabilities	309	235
Total deferred credits and other liabilities	4,436	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	3,517	3,190
Total shareholders’ equity	6,495	6,168
TOTAL LIABILITIES AND EQUITY	17,110	16,441
Ameren Illinois Company | Nonrelated Party
Current Assets:
Accounts receivable - trade (less allowance for doubtful accounts)	281	341
Current Liabilities:
Accounts and wages payable	357	451
Ameren Illinois Company | Related Party
Current Assets:
Accounts receivable - trade (less allowance for doubtful accounts)	10	12
Current Liabilities:
Accounts and wages payable	$ 68	$ 93