Consolidated Statement of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Cash Flows From Operating Activities:
Net income	$ 1,208	$ 979
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,199	1,142
Amortization of nuclear fuel	39	59
Amortization of debt issuance costs and premium/discounts	14	14
Deferred income taxes and tax credits, net	255	145
Allowance for equity funds used during construction	(60)	(48)
Stock-based compensation costs	21	22
Other	29	84
Changes in assets and liabilities:
Receivables	(356)	(183)
Inventories	(41)	(60)
Accounts and wages payable	(244)	(239)
Taxes accrued	307	176
Regulatory assets and liabilities	97	86
Assets, other	(29)	(59)
Liabilities, other	72	(4)
Pension and other postretirement benefits	(114)	(168)
Net cash provided by operating activities	2,397	1,946
Cash Flows From Investing Activities:
Capital expenditures	(3,118)	(3,029)
Nuclear fuel expenditures	(20)	(57)
Purchases of securities – nuclear decommissioning trust fund	(373)	(499)
Sales and maturities of securities – nuclear decommissioning trust fund	348	480
Other	51	(1)
Net cash used in investing activities	(3,112)	(3,106)
Cash Flows From Financing Activities:
Dividends on common stock	(576)	(535)
Dividends paid to noncontrolling interest holders	(4)	(4)
Short-term debt, net	(239)	1,002
Maturities and extinguishment of long-term debt	(324)	(849)
Issuances of long-term debt	1,960	1,610
Issuances of common stock	35	30
Employee payroll taxes related to stock-based compensation	(13)	(8)
Debt issuance costs	(17)	(19)
Other	0	(15)
Net cash provided by financing activities	822	1,212
Net change in cash, cash equivalents, and restricted cash	107	52
Cash, cash equivalents, and restricted cash at beginning of year	328	272
Cash, cash equivalents, and restricted cash at end of period	435	324
Union Electric Company
Cash Flows From Operating Activities:
Net income	713	537
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	673	641
Amortization of nuclear fuel	39	59
Amortization of debt issuance costs and premium/discounts	7	5
Deferred income taxes and tax credits, net	167	2
Allowance for equity funds used during construction	(37)	(38)
Other	7	69
Changes in assets and liabilities:
Receivables	(245)	(178)
Inventories	3	(21)
Accounts and wages payable	(240)	(223)
Taxes accrued	336	218
Regulatory assets and liabilities	(155)	(5)
Assets, other	21	(20)
Liabilities, other	26	10
Pension and other postretirement benefits	(42)	(59)
Net cash provided by operating activities	1,273	997
Cash Flows From Investing Activities:
Capital expenditures	(1,873)	(1,839)
Nuclear fuel expenditures	(20)	(57)
Purchases of securities – nuclear decommissioning trust fund	(373)	(499)
Sales and maturities of securities – nuclear decommissioning trust fund	348	480
Money pool advances, net	43
Money pool advances, net		(9)
Other	0	(8)
Net cash used in investing activities	(1,875)	(1,932)
Cash Flows From Financing Activities:
Dividends on common stock	(125)	0
Dividends on preferred stock	(3)	(3)
Short-term debt, net	259	406
Money pool borrowings, net	51	(289)
Maturities and extinguishment of long-term debt	0	(350)
Issuances of long-term debt	500	846
Capital contributions from parent	0	350
Debt issuance costs	(4)	(10)
Other	0	(15)
Net cash provided by financing activities	678	935
Net change in cash, cash equivalents, and restricted cash	76	0
Cash, cash equivalents, and restricted cash at beginning of year	17	10
Cash, cash equivalents, and restricted cash at end of period	93	10
Ameren Illinois Company
Cash Flows From Operating Activities:
Net income	522	454
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	484	461
Amortization of debt issuance costs and premium/discounts	3	3
Deferred income taxes and tax credits, net	30	72
Allowance for equity funds used during construction	(21)	(10)
Other	24	32
Changes in assets and liabilities:
Receivables	(129)	(23)
Inventories	(45)	(35)
Accounts and wages payable	(1)	(8)
Taxes accrued	26	118
Regulatory assets and liabilities	255	96
Assets, other	(49)	(32)
Liabilities, other	68	5
Pension and other postretirement benefits	(50)	(66)
Net cash provided by operating activities	1,117	1,067
Cash Flows From Investing Activities:
Capital expenditures	(1,127)	(1,091)
Money pool advances, net	(51)	0
Other	(3)	1
Net cash used in investing activities	(1,181)	(1,090)
Cash Flows From Financing Activities:
Dividends on common stock	(185)	(50)
Dividends on preferred stock	(1)	(1)
Short-term debt, net	(88)	(349)
Money pool borrowings, net	(37)	(135)
Maturities and extinguishment of long-term debt	(300)	0
Issuances of long-term debt	711	624
Debt issuance costs	(8)	(7)
Net cash provided by financing activities	92	82
Net change in cash, cash equivalents, and restricted cash	28	59
Cash, cash equivalents, and restricted cash at beginning of year	302	234
Cash, cash equivalents, and restricted cash at end of period	$ 330	$ 293