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Short-Term Debt And Liquidity | 6 Months Ended
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Jun. 30, 2022
Debt Disclosure [Abstract] |
SHORT-TERM DEBT AND LIQUIDITY | SHORT-TERM DEBT AND LIQUIDITY The liquidity needs of the Ameren Companies are typically supported through the use of available cash, drawings under committed credit agreements, commercial paper issuances, and, in the case of Ameren Missouri and Ameren Illinois, short-term affiliate borrowings. See Note 4 – Short-term Debt and Liquidity under Part II, Item 8, in the Form 10-K for a description of our indebtedness provisions and other covenants as well as a description of money pool arrangements. Short-term Borrowings The Missouri Credit Agreement and the Illinois Credit Agreement are available to support issuances under Ameren (parent)’s, Ameren Missouri’s, and Ameren Illinois’ commercial paper programs, respectively, subject to borrowing sublimits, and the issuance of letters of credit. As of June 30, 2022, based on commercial paper outstanding and letters of credit issued under the Credit Agreements, along with cash and cash equivalents, the net liquidity available to Ameren (parent), Ameren Missouri, and Ameren Illinois, collectively, was $1.3 billion. The Ameren Companies were in compliance with the covenants in their Credit Agreements as of June 30, 2022. As of June 30, 2022, the ratios of consolidated indebtedness to consolidated total capitalization, calculated in accordance with the provisions of the Credit Agreements, were 59%, 51%, and 44% for Ameren, Ameren Missouri, and Ameren Illinois, respectively. The following table presents commercial paper outstanding, net of issuance discounts, as of June 30, 2022, and December 31, 2021. There were no borrowings outstanding under the Credit Agreements as of June 30, 2022, or December 31, 2021.
| June 30, 2022 |  |  | December 31, 2021
Ameren (parent) | $ | 595 |  |  |  | $ | 277 |
Ameren Missouri | 285 |  |  |  | 165 |
Ameren Illinois | 141 |  |  |  | 103 |
Ameren consolidated | $ | 1,021 |  |  |  | $ | 545 |
The following table summarizes the activity and relevant interest rates for Ameren (parent)’s, Ameren Missouri’s, and Ameren Illinois’ commercial paper issuances and borrowings under the Credit Agreements in the aggregate for the six months ended June 30, 2022 and 2021:
|  | Ameren (parent) |  | Ameren Missouri |  | Ameren Illinois |  | Ameren Consolidated |
2022 |  |  |  |  |  |  |  |  |
Average daily amount outstanding |  | $ | 374 |  |  | $ | 271 |  |  | $ | 57 |  |  | $ | 702 |  |
Weighted-average interest rate |  | 0.87 | % |  | 0.65 | % |  | 0.47 | % |  | 0.75 | % |
Peak amount outstanding during period(a) |  | $ | 595 |  |  | $ | 539 |  |  | $ | 142 |  |  | $ | 1,101 |  |
Peak interest rate |  | 2.05 | % |  | 2.05 | % |  | 2.05 | % |  | 2.05 | % |
2021 |  |  |  |  |  |  |  |  |
Average daily amount outstanding |  | $ | 388 |  |  | $ | 183 |  |  | $ | 211 |  |  | $ | 782 |  |
Weighted-average interest rate |  | 0.24 | % |  | 0.22 | % |  | 0.22 | % |  | 0.23 | % |
Peak amount outstanding during period(a) |  | $ | 650 |  |  | $ | 546 |  |  | $ | 485 |  |  | $ | 1,134 |  |
Peak interest rate |  | 0.33 | % |  | 0.25 | % |  | 0.25 | % |  | 0.33 | % |
(a)The timing of peak outstanding commercial paper issuances and borrowings under the Credit Agreements varies by company. Therefore, the sum of individual company peak amounts may not equal the Ameren consolidated peak for the period. Money Pools Ameren has money pool agreements with and among its subsidiaries to coordinate and provide for certain short-term cash and working capital requirements. The average interest rate for borrowings under the utility money pool for the three and six months ended June 30, 2022, was 0.98% and 0.69%, respectively (2021 – 0.22% and 0.22%, respectively). See Note 8 – Related-party Transactions for the amount of interest income and expense from the utility money pool arrangements recorded by Ameren Missouri and Ameren Illinois for the three and six months ended June 30, 2022 and 2021.

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- Definition The entire disclosure for short-term debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -URI http://asc.fasb.org/topic&trid=2208564 + Details
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