Consolidated Statement of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash Flows From Operating Activities:
Net income	$ 522	$ 504
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	760	703
Amortization of nuclear fuel	38	36
Amortization of debt issuance costs and premium/discounts	9	8
Deferred income taxes and investment tax credits, net	76	66
Allowance for equity funds used during construction	(25)	(23)
Stock-based compensation costs	14	14
Other	13	(19)
Changes in assets and liabilities:
Receivables	(85)	173
Inventories	(7)	(44)
Accounts and wages payable	(210)	(335)
Taxes accrued	121	93
Regulatory assets and liabilities	(105)	(81)
Assets, other	(53)	(38)
Liabilities, other	100	34
Pension and other postretirement benefits	(112)	(114)
Counterparty collateral, net	(7)	134
Net cash provided by operating activities	1,049	1,111
Cash Flows From Investing Activities:
Capital expenditures	(1,892)	(1,822)
Nuclear fuel expenditures	(37)	(50)
Purchases of securities – nuclear decommissioning trust fund	(323)	(81)
Sales and maturities of securities – nuclear decommissioning trust fund	309	65
Other	11	(1)
Net cash used in investing activities	(1,932)	(1,889)
Cash Flows From Financing Activities:
Dividends on common stock	(356)	(330)
Dividends paid to noncontrolling interest holders	(3)	(3)
Short-term debt, net	156	260
Maturities of long-term debt	(350)	(100)
Issuances of long-term debt	1,470	997
Issuances of common stock	21	16
Employee payroll taxes related to stock-based compensation	(8)	(20)
Debt issuance costs	(18)	(9)
Other	0	(3)
Net cash provided by financing activities	912	808
Net change in cash, cash equivalents, and restricted cash	29	30
Cash, cash equivalents, and restricted cash at beginning of year	272	216
Cash, cash equivalents, and restricted cash at end of period	301	246
Union Electric Company
Cash Flows From Operating Activities:
Net income	155	132
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	426	410
Amortization of nuclear fuel	38	36
Amortization of debt issuance costs and premium/discounts	3	3
Deferred income taxes and investment tax credits, net	38	10
Allowance for equity funds used during construction	(23)	(12)
Other	22	(20)
Changes in assets and liabilities:
Receivables	(121)	(9)
Inventories	(12)	(81)
Accounts and wages payable	(196)	(231)
Taxes accrued	118	103
Regulatory assets and liabilities	(31)	28
Assets, other	(30)	13
Liabilities, other	63	21
Pension and other postretirement benefits	(40)	(41)
Counterparty collateral, net	(3)	81
Net cash provided by operating activities	407	443
Cash Flows From Investing Activities:
Capital expenditures	(1,104)	(914)
Nuclear fuel expenditures	(37)	(50)
Purchases of securities – nuclear decommissioning trust fund	(323)	(81)
Sales and maturities of securities – nuclear decommissioning trust fund	309	65
Net cash used in investing activities	(1,155)	(980)
Cash Flows From Financing Activities:
Dividends on preferred stock	(2)	(2)
Short-term debt, net	220	44
Money pool borrowings, net	(306)	0
Maturities of long-term debt	(350)	0
Issuances of long-term debt	846	499
Capital contributions from parent	350	0
Debt issuance costs	(9)	(6)
Other	0	(3)
Net cash provided by financing activities	749	532
Net change in cash, cash equivalents, and restricted cash	1	(5)
Cash, cash equivalents, and restricted cash at beginning of year	10	13
Cash, cash equivalents, and restricted cash at end of period	11	8
Ameren Illinois Company
Cash Flows From Operating Activities:
Net income	340	328
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	307	271
Amortization of debt issuance costs and premium/discounts	2	2
Deferred income taxes and investment tax credits, net	37	70
Allowance for equity funds used during construction	(2)	(10)
Other	8	12
Changes in assets and liabilities:
Receivables	27	182
Inventories	9	37
Accounts and wages payable	7	(92)
Taxes accrued	55	(36)
Regulatory assets and liabilities	(70)	(105)
Assets, other	(23)	(42)
Liabilities, other	32	13
Pension and other postretirement benefits	(43)	(46)
Counterparty collateral, net	5	53
Net cash provided by operating activities	691	637
Cash Flows From Investing Activities:
Capital expenditures	(717)	(844)
Money pool advances, net	(30)	0
Other	5	(2)
Net cash used in investing activities	(742)	(846)
Cash Flows From Financing Activities:
Dividends on common stock	(25)	0
Dividends on preferred stock	(1)	(1)
Short-term debt, net	(366)	(147)
Money pool borrowings, net	(135)	0
Maturities of long-term debt	0	(100)
Issuances of long-term debt	624	498
Debt issuance costs	(7)	(3)
Net cash provided by financing activities	90	247
Net change in cash, cash equivalents, and restricted cash	39	38
Cash, cash equivalents, and restricted cash at beginning of year	234	191
Cash, cash equivalents, and restricted cash at end of period	$ 273	$ 229