Consolidated Statement Of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Cash Flows From Operating Activities:
Net income	$ 1,461	$ 1,187	$ 1,157
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,612	1,524	1,432
Amortization of nuclear fuel	56	81	68
Amortization of debt issuance costs and premium/discounts	19	19	16
Deferred income taxes and production and investment tax credits, net	253	127	229
Allowance for equity funds used during construction	88	76	54
Stock-based compensation costs	28	28	26
Other	63	87	16
Changes in assets and liabilities:
Receivables	(272)	(91)	144
Inventories	(12)	(31)	(67)
Accounts and wages payable	42	4	(104)
Taxes accrued	190	34	(4)
Regulatory assets and liabilities	65	99	(165)
Assets, other	(36)	(34)	(109)
Liabilities, other	104	22	115
Pension and other postretirement benefits	(152)	(216)	(283)
Counterparty collateral, net	20	(1)	147
Net cash provided by operating activities	3,353	2,763	2,564
Cash Flows From Investing Activities:
Capital expenditures	(4,128)	(4,319)	(3,597)
Nuclear fuel expenditures	(46)	(91)	(174)
Purchases of securities – nuclear decommissioning trust fund	(440)	(584)	(266)
Proceeds from sales and maturities	416	564	240
Other	53	(26)	(1)
Net cash used in investing activities	(4,145)	(4,456)	(3,798)
Cash Flows From Financing Activities:
Dividends on common stock	(768)	(714)	(662)
Dividends paid to noncontrolling interest holders	(5)	(5)	(5)
Short-term debt, net	(499)	607	(533)
Maturities and extinguishment of long-term debt	(341)	(893)	(100)
Issuances of long-term debt	1,960	2,535	2,295
Issuances of common stock	574	273	346
Employee payroll taxes related to stock-based compensation	(13)	(8)	(20)
Debt issuance costs	(24)	(31)	(21)
Other	0	(15)	(10)
Net cash provided by financing activities	884	1,749	1,290
Net change in cash, cash equivalents, and restricted cash	92	56	56
Cash, cash equivalents, and restricted cash at beginning of year	328	272	216
Cash Paid (Refunded) During the Year:
Interest (net of amounts capitalized, respectively)	755	611	546
Income Taxes Paid, Net	(312)	(92)	(24)
Ameren Missouri
Cash Flows From Operating Activities:
Net Income Attributable to Ameren Common Shareholders	750	562	548
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	903	851	827
Amortization of nuclear fuel	56	81	68
Amortization of debt issuance costs and premium/discounts	9	7	7
Deferred income taxes and production and investment tax credits, net	185	(29)	28
Allowance for equity funds used during construction	56	58	30
Other	24	74	(8)
Changes in assets and liabilities:
Receivables	(98)	(26)	39
Inventories	22	(6)	(74)
Accounts and wages payable	10	17	(8)
Taxes accrued	215	60	(17)
Regulatory assets and liabilities	(213)	51	(7)
Assets, other	18	0	(25)
Liabilities, other	27	18	3
Pension and other postretirement benefits	(56)	(76)	(106)
Counterparty collateral, net	7	(3)	96
Net cash provided by operating activities	1,803	1,523	1,341
Cash Flows From Investing Activities:
Capital expenditures	(2,502)	(2,712)	(1,760)
Nuclear fuel expenditures	(46)	(91)	(174)
Purchases of securities – nuclear decommissioning trust fund	(440)	(584)	(266)
Proceeds from sales and maturities	416	564	240
Money pool advances, net	43
Money pool advances, net		(43)	0
Other	0	(32)	0
Net cash used in investing activities	(2,529)	(2,898)	(1,960)
Cash Flows From Financing Activities:
Dividends on common stock	(196)	0	(9)
Dividends on preferred stock	(3)	(3)	(3)
Short-term debt, net	471	(170)	(159)
Money pool borrowings, net	0	(306)	306
Maturities and extinguishment of long-term debt	(17)	(350)	0
Issuances of long-term debt	500	1,771	499
Debt issuance costs	(6)	(21)	(8)
Capital contribution from parent	28	476	0
Other	0	(15)	(10)
Net cash provided by financing activities	777	1,382	616
Net change in cash, cash equivalents, and restricted cash	51	7	(3)
Cash, cash equivalents, and restricted cash at beginning of year	17	10	13
Cash Paid (Refunded) During the Year:
Interest (net of amounts capitalized, respectively)	312	244	225
Income Taxes Paid, Net	(359)	(136)	(19)
Ameren Illinois
Cash Flows From Operating Activities:
Net Income Attributable to Ameren Common Shareholders	737	622	609
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	652	619	557
Amortization of debt issuance costs and premium/discounts	6	6	5
Deferred income taxes and production and investment tax credits, net	70	188	177
Allowance for equity funds used during construction	30	17	19
Other	45	41	40
Changes in assets and liabilities:
Receivables	(168)	(70)	129
Inventories	(35)	(21)	7
Accounts and wages payable	30	1	(107)
Taxes accrued	(33)	55	(73)
Regulatory assets and liabilities	270	53	(152)
Assets, other	(53)	(33)	(123)
Liabilities, other	62	2	106
Pension and other postretirement benefits	(67)	(88)	(112)
Counterparty collateral, net	12	11	54
Net cash provided by operating activities	1,498	1,369	1,098
Cash Flows From Investing Activities:
Capital expenditures	(1,481)	(1,467)	(1,731)
Other	(3)	1	(2)
Net cash used in investing activities	(1,484)	(1,466)	(1,733)
Cash Flows From Financing Activities:
Dividends on common stock	(265)	(110)	(41)
Dividends on preferred stock	(2)	(2)	(2)
Short-term debt, net	(71)	(277)	102
Money pool borrowings, net	(37)	(98)	135
Maturities and extinguishment of long-term debt	(300)	0	(100)
Issuances of long-term debt	711	624	498
Debt issuance costs	(10)	(8)	(5)
Capital contribution from parent	2	36	91
Net cash provided by financing activities	28	165	678
Net change in cash, cash equivalents, and restricted cash	42	68	43
Cash, cash equivalents, and restricted cash at beginning of year	302	234	191
Cash Paid (Refunded) During the Year:
Interest (net of amounts capitalized, respectively)	242	213	195
Income Taxes Paid, Net	$ 118	$ (46)	$ 102

AMEREN CORP 10-K