Consolidated Balance Sheet - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Current Assets:
Cash and cash equivalents	$ 2	$ 5
Accounts receivable - trade (less allowance for doubtful accounts)	456	423
Unbilled revenue	302	265
Miscellaneous accounts and notes receivable	112	81
Materials and supplies	500	524
Current regulatory assets	223	295
Current accumulated deferred income taxes, net	286	352
Other current assets	95	86
Assets of discontinued operations (Note 12)	15	15
Total current assets	1,991	2,046
Property and Plant, Net	17,986	17,424
Investments and Other Assets:
Nuclear decommissioning trust fund	555	549
Goodwill	411	411
Regulatory assets	1,560	1,582
Other assets	649	664
Total investments and other assets	3,175	3,206
TOTAL ASSETS	23,152	22,676
Current Liabilities:
Current maturities of long-term debt	395	120
Short-term Debt	886	714
Accounts and wages payable	486	711
Taxes accrued	126	46
Interest accrued	98	85
Current regulatory liabilities	120	106
Other current liabilities	413	434
Liabilities of discontinued operations (Note 12)	32	33
Total current liabilities	2,556	2,249
Long-term Debt, Net	5,981	6,120
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes, net	3,931	3,923
Accumulated deferred investment tax credits	64	64
Regulatory liabilities	1,912	1,850
Asset retirement obligations	589	396
Pension and other postretirement benefits	689	705
Other deferred credits and liabilities	524	514
Total deferred credits and other liabilities	$ 7,709	$ 7,452
Commitments and Contingencies
Stockholders' Equity:
Common Stock	$ 2	$ 2
Other paid-in capital	5,606	5,617
Retained earnings	1,161	1,103
Accumulated other comprehensive income (loss)	(5)	(9)
Stockholder's equity	6,764	6,713
Noncontrolling Interest	142	142
Total equity	6,906	6,855
TOTAL LIABILITIES AND EQUITY	23,152	22,676
Union Electric Company
Current Assets:
Cash and cash equivalents	0	1
Accounts receivable - trade (less allowance for doubtful accounts)	227	190
Accounts receivable - affiliates	13	65
Unbilled revenue	213	146
Miscellaneous accounts and notes receivable	54	35
Materials and supplies	371	347
Current regulatory assets	133	163
Other current assets	89	92
Total current assets	1,100	1,039
Property and Plant, Net	11,017	10,867
Investments and Other Assets:
Nuclear decommissioning trust fund	555	549
Regulatory assets	660	695
Other assets	389	391
Total investments and other assets	1,604	1,635
TOTAL ASSETS	13,721	13,541
Current Liabilities:
Current maturities of long-term debt	266	120
Short-term Debt	38	97
Accounts and wages payable	183	405
Accounts payable - affiliates	43	56
Taxes accrued	151	32
Interest accrued	73	58
Current regulatory liabilities	58	18
Other current liabilities	124	117
Total current liabilities	936	903
Long-term Debt, Net	3,869	3,879
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes, net	2,826	2,806
Accumulated deferred investment tax credits	61	61
Regulatory liabilities	1,188	1,147
Asset retirement obligations	582	389
Pension and other postretirement benefits	275	274
Other deferred credits and liabilities	30	30
Total deferred credits and other liabilities	$ 4,962	$ 4,707
Commitments and Contingencies
Stockholders' Equity:
Common Stock	$ 511	$ 511
Other paid-in capital	1,784	1,569
Preferred stock	80	80
Retained earnings	1,579	1,892
Stockholder's equity	3,954	4,052
TOTAL LIABILITIES AND EQUITY	13,721	13,541
Ameren Illinois Company
Current Assets:
Cash and cash equivalents	0	1
Accounts receivable - trade (less allowance for doubtful accounts)	207	212
Accounts receivable - affiliates	8	22
Unbilled revenue	89	119
Miscellaneous accounts and notes receivable	11	9
Materials and supplies	129	177
Current regulatory assets	89	129
Current accumulated deferred income taxes, net	159	160
Other current assets	10	15
Total current assets	702	844
Property and Plant, Net	6,416	6,165
Investments and Other Assets:
Goodwill	411	411
Regulatory assets	893	883
Other assets	78	78
Total investments and other assets	1,382	1,372
TOTAL ASSETS	8,500	8,381
Current Liabilities:
Current maturities of long-term debt	129	0
Short-term Debt	12	32
Borrowings from money pool	25	15
Accounts and wages payable	229	207
Accounts payable - affiliates	43	50
Taxes accrued	10	17
Interest accrued	25	24
Customer deposits	73	77
Mark-to-market derivative liabilities	35	42
Current environmental remediation	43	52
Current regulatory liabilities	53	84
Other current liabilities	80	100
Total current liabilities	757	700
Long-term Debt, Net	2,112	2,241
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes, net	1,454	1,408
Regulatory liabilities	724	703
Pension and other postretirement benefits	292	277
Environmental remediation	198	199
Other deferred credits and liabilities	221	192
Total deferred credits and other liabilities	$ 2,889	$ 2,779
Commitments and Contingencies
Stockholders' Equity:
Common Stock	$ 0	$ 0
Other paid-in capital	1,980	1,980
Preferred stock	62	62
Retained earnings	694	611
Accumulated other comprehensive income (loss)	6	8
Stockholder's equity	2,742	2,661
TOTAL LIABILITIES AND EQUITY	$ 8,500	$ 8,381