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Schedule I - Condensed Financial Information Of Parent | 12 Months Ended
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Dec. 31, 2023
Condensed Financial Information Disclosure [Abstract] |
Condensed Financial Information Of Parent |
SCHEDULE I – CONDENSED FINANCIAL INFORMATION OF PARENT AMEREN CORPORATION CONDENSED STATEMENT OF INCOME AND COMPREHENSIVE INCOME For the Years Ended December 31, 2023, 2022, and 2021
(In millions) | 2023 |  | 2022 |  | 2021
Operating revenues | $ | — |  |  | $ | — |  |  | $ | — |
Operating expenses | 22 |  |  | 15 |  |  | 13 |
Operating loss | (22) |  |  | (15) |  |  | (13) |
Equity in earnings of subsidiaries | 1,245 |  |  | 1,161 |  |  | 1,039 |
Interest income from affiliates | 10 |  |  | 2 |  |  | 3 |
Total other expense, net | (11) |  |  | (13) |  |  | — |
Interest charges | (119) |  |  | (86) |  |  | (64) |
Income tax benefit | 49 |  |  | 25 |  |  | 25 |
Net Income Attributable to Ameren Common Shareholders | $ | 1,152 |  |  | $ | 1,074 |  |  | $ | 990 |
Net Income Attributable to Ameren Common Shareholders | $ | 1,152 |  |  | $ | 1,074 |  |  | $ | 990 |
Other Comprehensive Income (Loss), Net of Taxes: |  |  |  |  |
Pension and other postretirement benefit plan activity, net of income taxes (benefit) of $(2), $(4), and $4, respectively | (5) |  |  | (14) |  |  | 14 |
Comprehensive Income Attributable to Ameren Common Shareholders | $ | 1,147 |  |  | $ | 1,060 |  |  | $ | 1,004 |
SCHEDULE I – CONDENSED FINANCIAL INFORMATION OF PARENT AMEREN CORPORATION CONDENSED BALANCE SHEET
(In millions, except per share amounts) | December 31, 2023 |  | December 31, 2022
Assets: |  |  |
Cash and cash equivalents | $ | 16 |  |  | $ | — |
Advances to money pool | 598 |  |  | 68 |
Accounts receivable – affiliates | 20 |  |  | 59 |
Miscellaneous accounts and notes receivable | 31 |  |  | 11 |
Total current assets | 665 |  |  | 138 |
Investments in subsidiaries | 14,573 |  |  | 13,394 |
Accumulated deferred income taxes, net | 44 |  |  | 46 |
Other assets | 149 |  |  | 137 |
Total assets | $ | 15,431 |  |  | $ | 13,715 |
Liabilities and Shareholders’ Equity: |  |  |
Current maturities of long-term debt | $ | 450 |  |  | $ | — |
Short-term debt | — |  |  | 477 |
Accounts payable | 2 |  |  | — |
Taxes accrued | 10 |  |  | 5 |
Accounts payable – affiliates | 100 |  |  | 52 |
Other current liabilities | 45 |  |  | 41 |
Total current liabilities | 607 |  |  | 575 |
Long-term debt, net | 3,379 |  |  | 2,536 |
Pension and other postretirement benefits | 19 |  |  | 19 |
Other deferred credits and liabilities | 77 |  |  | 77 |
Total liabilities | 4,082 |  |  | 3,207 |
Commitments and Contingencies (Note 4) |  |  |
Shareholders’ Equity: |  |  |
Common stock, $.01 par value, 400.0 shares authorized – shares outstanding of 266.3 and 262.0, respectively | 3 |  |  | 3 |
Other paid-in capital, principally premium on common stock | 7,216 |  |  | 6,860 |
Retained earnings | 4,136 |  |  | 3,646 |
Accumulated other comprehensive income (loss) | (6) |  |  | (1) |
Total shareholders’ equity | 11,349 |  |  | 10,508 |
Total liabilities and shareholders’ equity | $ | 15,431 |  |  | $ | 13,715 |
SCHEDULE I – CONDENSED FINANCIAL INFORMATION OF PARENT AMEREN CORPORATION CONDENSED STATEMENT OF CASH FLOWS For the Years Ended December 31, 2023, 2022, and 2021
(In millions) |  | 2023 |  | 2022 |  | 2021
Net cash flows provided by operating activities |  | $ | 171 |  |  | $ | 44 |  |  | $ | 79 |
Cash flows from investing activities: |  |  |  |  |  |
Money pool advances, net |  | (530) |  |  | 40 |  |  | (92) |
Notes receivable – ATXI |  | — |  |  | 35 |  |  | 40 |
Investments in subsidiaries |  | (109) |  |  | (30) |  |  | (489) |
Other |  | 5 |  |  | 3 |  |  | 7 |
Net cash flows provided by (used in) investing activities |  | (634) |  |  | 48 |  |  | (534) |
Cash flows from financing activities: |  |  |  |  |  |
Dividends on common stock |  | (662) |  |  | (610) |  |  | (565) |
Short-term debt, net |  | (475) |  |  | 198 |  |  | (213) |
Issuances of long-term debt |  | 1,298 |  |  | — |  |  | 949 |
Issuances of common stock |  | 346 |  |  | 333 |  |  | 308 |
Employee payroll taxes related to stock-based compensation |  | (20) |  |  | (16) |  |  | (17) |
Debt issuance costs |  | (8) |  |  | (1) |  |  | (7) |
Net cash flows provided by (used in) financing activities |  | 479 |  |  | (96) |  |  | 455 |
Net change in cash, cash equivalents, and restricted cash |  | $ | 16 |  |  | $ | (4) |  |  | $ | — |
Cash, cash equivalents, and restricted cash at beginning of year |  | — |  |  | 4 |  |  | 4 |
Cash, cash equivalents, and restricted cash at end of year |  | $ | 16 |  |  | $ | — |  |  | $ | 4 |
Supplemental information: |  |  |  |  |  |
Cash dividends received from consolidated subsidiaries |  | $ | 173 |  |  | $ | 76 |  |  | $ | 123 |
Noncash financing activity – Issuance of common stock for stock-based compensation |  | 40 |  |  | 31 |  |  | 33 |
Noncash financing activity – Issuance of common stock under the DRPlus |  | 7 |  |  | 8 |  |  | — |
AMEREN CORPORATION (parent company only) NOTES TO CONDENSED FINANCIAL STATEMENTS December 31, 2023 NOTE 1 – BASIS OF PRESENTATION Ameren Corporation (parent company only) is a public utility holding company that conducts substantially all of its business operations through its subsidiaries. Ameren Corporation (parent company only) has accounted for its subsidiaries using the equity method. These financial statements are presented on a condensed basis. See Note 1 – Summary of Significant Accounting Policies and Note 15 – Supplemental Information under Part II, Item 8, of this report for additional information. NOTE 2 – SHORT-TERM DEBT AND LIQUIDITY Ameren, Ameren Services, and other non-state-regulated Ameren subsidiaries have the ability, subject to Ameren parent company and applicable regulatory short-term borrowing authorizations, to access funding from the Credit Agreements and the commercial paper programs through a non-state-regulated subsidiary money pool agreement. All participants may borrow from or lend to the non-state-regulated money pool. The total amount available to pool participants from the non-state-regulated subsidiary money pool at any given time is reduced by the amount of borrowings made by participants, but is increased to the extent that the pool participants advance surplus funds to the non-state-regulated subsidiary money pool or remit funds from other external sources. The non-state-regulated subsidiary money pool was established to coordinate and to provide short-term cash and working capital for the participants. Participants receiving a loan under the non-state-regulated subsidiary money pool agreement must repay the principal amount of such loan, together with accrued interest. The rate of interest depends on the composition of internal and external funds in the non-state-regulated subsidiary money pool. Interest revenues related to non-state-regulated money pool advances were $10 million in 2023 and immaterial in 2022 and 2021. Interest charges related to non-state-regulated money pool borrowings were immaterial in 2021, 2022, and 2023. See Note 4 – Short-term Debt and Liquidity under Part II, Item 8, of this report for a description and details of short-term debt and liquidity needs of Ameren Corporation (parent company only). NOTE 3 – LONG-TERM OBLIGATIONS See Note 5 – Long-term Debt and Equity Financings under Part II, Item 8, of this report for additional information on Ameren Corporation’s (parent company only) long-term debt, indenture provisions, forward sale agreements related to common stock, and ATM program. NOTE 4 – COMMITMENTS AND CONTINGENCIES See Note 14 – Commitments and Contingencies under Part II, Item 8, of this report for a description of all material contingencies of Ameren Corporation (parent company only). NOTE 5 – TOTAL OTHER EXPENSE, NET The following table presents the components of “Total Other Expense, Net” in the Condensed Statement of Income and Comprehensive Income for the years ended December 31, 2023, 2022, and 2021:
(In millions) | 2023 |  | 2022 |  | 2021
Total Other Expense, Net |  |  |  |  |
Non-service cost components of net periodic benefit income | $ | 8 |  |  | $ | 3 |  |  | $ | 1 |
Donations | (18) |  |  | (15) |  |  | — |
Other expense, net | (1) |  |  | (1) |  |  | (1) |
Total Other Expense, Net | $ | (11) |  |  | $ | (13) |  |  | $ | — |
Other Income And Expenses | The following table presents the components of “Other Income, Net” in the Ameren Companies’ statements of income for the years ended December 31, 2023, 2022, and 2021:
| 2023 |  | 2022 |  | 2021 |
Ameren: |  |  |  |  |  |
Other Income, Net |  |  |  |  |  |
Allowance for equity funds used during construction | $ | 54 |  |  | $ | 43 |  |  | $ | 43 |  |
Interest income on industrial development revenue bonds | 1 |  |  | 24 |  |  | 25 |  |
Other interest income | 32 |  |  | 11 |  |  | 2 |  |
Non-service cost components of net periodic benefit income(a) | 295 |  |  | 184 |  |  | 136 |  |
Miscellaneous income | 7 |  |  | 10 |  |  | 10 |  |
Earnings related to equity method investments | 1 |  |  | 2 |  |  | 12 |  |
Donations | (24) |  |  | (26) |  |  | (9) |  |
Miscellaneous expense | (18) |  |  | (22) |  |  | (17) |  |
Total Other Income, Net | $ | 348 |  |  | $ | 226 |  |  | $ | 202 |  |
Ameren Missouri: |  |  |  |  |  |
Other Income, Net |  |  |  |  |  |
Allowance for equity funds used during construction | $ | 30 |  |  | $ | 24 |  |  | $ | 26 |  |
Interest income on industrial development revenue bonds | 1 |  |  | 24 |  |  | 25 |  |
Other interest income | 10 |  |  | 4 |  |  | 1 |  |
Non-service cost components of net periodic benefit income(a) | 97 |  |  | 55 |  |  | 55 |  |
Miscellaneous income | 3 |  |  | 4 |  |  | 3 |  |
Donations | (2) |  |  | (3) |  |  | (4) |  |
Miscellaneous expense | (9) |  |  | (9) |  |  | (7) |  |
Total Other Income, Net | $ | 130 |  |  | $ | 99 |  |  | $ | 99 |  |
Ameren Illinois: |  |  |  |  |  |
Other Income, Net |  |  |  |  |  |
Allowance for equity funds used during construction | $ | 19 |  |  | $ | 18 |  |  | $ | 17 |  |
Interest income | 21 |  |  | 7 |  |  | 1 |  |
Non-service cost components of net periodic benefit income | 124 |  |  | 84 |  |  | 55 |  |
Miscellaneous income | 4 |  |  | 5 |  |  | 6 |  |
Donations | (4) |  |  | (8) |  |  | (5) |  |
Miscellaneous expense | (8) |  |  | (10) |  |  | (8) |  |
Total Other Income, Net | $ | 156 |  |  | $ | 96 |  |  | $ | 66 |  |
(a)For the years ended December 31, 2023, 2022, and 2021, the non-service cost components of net periodic benefit income were adjusted by amounts deferred of $27 million, $22 million, and $(7) million, respectively, due to a regulatory tracking mechanism for the difference between the level of such costs incurred by Ameren Missouri under GAAP and the level of such costs included in rates. The following table presents the components of “Total Other Expense, Net” in the Condensed Statement of Income and Comprehensive Income for the years ended December 31, 2023, 2022, and 2021:
(In millions) | 2023 |  | 2022 |  | 2021
Total Other Expense, Net |  |  |  |  |
Non-service cost components of net periodic benefit income | $ | 8 |  |  | $ | 3 |  |  | $ | 1 |
Donations | (18) |  |  | (15) |  |  | — |
Other expense, net | (1) |  |  | (1) |  |  | (1) |
Total Other Expense, Net | $ | (11) |  |  | $ | (13) |  |  | $ | — |

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- Definition The entire disclosure for condensed financial information, including the financial position, cash flows, and the results of operations of the registrant (parent company) as of the same dates or for the same periods for which audited consolidated financial statements are being presented. Alternatively, the details of this disclosure can be reported by the specific parent company taxonomy elements, indicating the appropriate date and period contexts in an instance document. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 205 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04(Schedule I)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480922/205-10-S99-6 Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Topic 810 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481231/810-10-45-11 + Details
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