Long-Term Debt And Equity Financings	6 Months Ended
Jun. 30, 2021
Long-Term Debt And Equity Financings [Abstract]
LONG-TERM DEBT AND EQUITY FINANCINGS	LONG-TERM DEBT AND EQUITY FINANCINGS Ameren For the three and six months ended June 30, 2021, Ameren issued a total of 0.2 million and 0.3 million shares of common stock, respectively, under its DRPlus and 401(k) plan, and received proceeds of $12 million and $24 million, respectively. In addition, in the first quarter of 2021, Ameren issued 0.5 million shares of common stock valued at $33 million upon the vesting of stock-based compensation. In February 2021, Ameren settled the remainder of the forward sale agreement by physically delivering 1.6 million shares of common stock for cash proceeds of $113 million. The proceeds were used to fund a portion of Ameren Missouri’s wind generation investments. See Note 2 – Rate and Regulatory Matters in this report and under Part II, Item 8, in the Form 10-K for additional information about the wind generation investments. In May 2021, Ameren entered into an equity distribution sales agreement pursuant to which Ameren may offer and sell from time to time up to $750 million of its common stock through an ATM program, which includes the ability to enter into forward sales agreements. For the six months ended June 30, 2021, Ameren issued 1.4 million shares of common stock and received proceeds of $121 million, net of $1 million in compensation paid to selling agents. In March 2021, Ameren (parent) issued $450 million of 1.75% senior unsecured notes due March 2028, with interest payable semiannually on March 15 and September 15 of each year, beginning September 15, 2021. Ameren received net proceeds of $447 million, which were used for general corporate purposes, including the repayment of short-term debt. Ameren Missouri In June 2021, Ameren Missouri issued $525 million of 2.15% first mortgage bonds due 2032, with interest payable semiannually on March 15 and September 15 of each year, beginning March 15, 2022. Ameren Missouri received net proceeds of $521 million, which are expected to be used to repay short-term debt and for near-term capital expenditures. Ameren Missouri intends to allocate an amount equal to the net proceeds to sustainability projects meeting certain eligibility criteria. Ameren Missouri received capital contributions totaling $183 million from Ameren (parent) during the six months ended June 30, 2021. Ameren Illinois In March 2021, Ameren Illinois redeemed its 6.625% and 7.75% series preferred stock at par for $12 million and $1 million, respectively. The preferred stock of Ameren Illinois is reflected in “Noncontrolling Interests” on Ameren’s consolidated balance sheet. In June 2021, Ameren Illinois issued $350 million of 2.90% first mortgage bonds due 2051, with interest payable semiannually on June 15 and December 15 of each year, beginning December 15, 2021. Ameren Illinois received net proceeds of $345 million, which are expected to be used to repay short-term debt. Ameren Illinois intends to allocate an amount equal to the net proceeds to sustainability projects meeting certain eligibility criteria. In June 2021, Ameren Illinois issued $100 million of 0.375% first mortgage bonds due 2023, with interest payable semiannually on June 15 and December 15 of each year, beginning December 15, 2021. Ameren Illinois received net proceeds of $100 million, which are expected to be used to repay short-term debt. Ameren Illinois received capital contributions totaling $70 million from Ameren (parent) during the six months ended June 30, 2021. Indenture Provisions and Other Covenants See Note 5 – Long-term Debt and Equity Financings under Part II, Item 8, in the Form 10-K for a description of our indenture provisions and other covenants, as well as restrictions on the payment of dividends. At June 30, 2021, the Ameren Companies were in compliance with the provisions and covenants contained in their indentures and articles of incorporation, as applicable, and ATXI was in compliance with the provisions and covenants contained in its note purchase agreement. Off-balance-sheet Arrangements At June 30, 2021, none of the Ameren Companies had any significant off-balance-sheet financing arrangements, other than variable interest entities. See Note 1 – Summary of Significant Accounting Policies for further detail concerning variable interest entities.

For the three and six months ended June 30, 2021, Ameren issued a total of 0.2 million and 0.3 million shares of common stock, respectively, under its DRPlus and 401(k) plan, and received proceeds of $12 million and $24 million, respectively. In addition, in the first quarter of 2021, Ameren issued 0.5 million shares of common stock valued at $33 million upon the vesting of stock-based compensation.

In February 2021, Ameren settled the remainder of the forward sale agreement by physically delivering 1.6 million shares of common stock for cash proceeds of $113 million. The proceeds were used to fund a portion of Ameren Missouri’s wind generation investments. See Note 2 – Rate and Regulatory Matters in this report and under Part II, Item 8, in the Form 10-K for additional information about the wind generation investments.

In May 2021, Ameren entered into an equity distribution sales agreement pursuant to which Ameren may offer and sell from time to time up to $750 million of its common stock through an ATM program, which includes the ability to enter into forward sales agreements. For the six months ended June 30, 2021, Ameren issued 1.4 million shares of common stock and received proceeds of $121 million, net of $1 million in compensation paid to selling agents.

In March 2021, Ameren (parent) issued $450 million of 1.75% senior unsecured notes due March 2028, with interest payable semiannually on March 15 and September 15 of each year, beginning September 15, 2021. Ameren received net proceeds of $447 million, which were used for general corporate purposes, including the repayment of short-term debt.

In June 2021, Ameren Missouri issued $525 million of 2.15% first mortgage bonds due 2032, with interest payable semiannually on March 15 and September 15 of each year, beginning March 15, 2022. Ameren Missouri received net proceeds of $521 million, which are expected to be used to repay short-term debt and for near-term capital expenditures. Ameren Missouri intends to allocate an amount equal to the net proceeds to sustainability projects meeting certain eligibility criteria.

Ameren Missouri received capital contributions totaling $183 million from Ameren (parent) during the six months ended June 30, 2021.

In March 2021, Ameren Illinois redeemed its 6.625% and 7.75% series preferred stock at par for $12 million and $1 million, respectively. The preferred stock of Ameren Illinois is reflected in “Noncontrolling Interests” on Ameren’s consolidated balance sheet.

In June 2021, Ameren Illinois issued $350 million of 2.90% first mortgage bonds due 2051, with interest payable semiannually on June 15 and December 15 of each year, beginning December 15, 2021. Ameren Illinois received net proceeds of $345 million, which are expected to be used to repay short-term debt. Ameren Illinois intends to allocate an amount equal to the net proceeds to sustainability projects meeting certain eligibility criteria.

In June 2021, Ameren Illinois issued $100 million of 0.375% first mortgage bonds due 2023, with interest payable semiannually on June 15 and December 15 of each year, beginning December 15, 2021. Ameren Illinois received net proceeds of $100 million, which are expected to be used to repay short-term debt.

Ameren Illinois received capital contributions totaling $70 million from Ameren (parent) during the six months ended June 30, 2021.

See Note 5 – Long-term Debt and Equity Financings under Part II, Item 8, in the Form 10-K for a description of our indenture provisions and other covenants, as well as restrictions on the payment of dividends. At June 30, 2021, the Ameren Companies were in compliance with the provisions and covenants contained in their indentures and articles of incorporation, as applicable, and ATXI was in compliance with the provisions and covenants contained in its note purchase agreement.

At June 30, 2021, none of the Ameren Companies had any significant off-balance-sheet financing arrangements, other than variable interest entities. See Note 1 – Summary of Significant Accounting Policies for further detail concerning variable interest entities.