Schedule I - Condensed Financial Information Of Parent

12 Months Ended

Dec. 31, 2020

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, 2020, 2019, and 2018
(In millions)	2020		2019		2018
Operating revenues	$	—	$	—	$	—
Operating expenses	12		15		11
Operating loss	(12)		(15)		(11)
Equity in earnings of subsidiaries	908		850		857
Interest income from affiliates	4		5		3
Total other expense, net	(8)		(2)		(12)
Interest charges	(57)		(39)		(34)
Income tax benefit	36		29		12
Net Income Attributable to Ameren Common Shareholders	$	871	$	828	$	815
Net Income Attributable to Ameren Common Shareholders	$	871	$	828	$	815
Other Comprehensive Income (Loss), Net of Taxes:
Pension and other postretirement benefit plan activity, net of income taxes (benefit) of $5, $1, and $(1), respectively	16		5		(4)
Comprehensive Income Attributable to Ameren Common Shareholders	$	887	$	833	$	811

SCHEDULE I – CONDENSED FINANCIAL INFORMATION OF PARENT AMEREN CORPORATION CONDENSED BALANCE SHEET
(In millions, except per share amounts)	December 31, 2020		December 31, 2019
Assets:
Cash and cash equivalents	$	—	$	—
Advances to money pool	16		102
Accounts receivable – affiliates	12		73
Miscellaneous accounts and notes receivable	15		4
Other current assets	4		3
Total current assets	47		182
Investments in subsidiaries	10,872		9,108
Note receivable – ATXI	75		75
Accumulated deferred income taxes, net	42		49
Other assets	167		145
Total assets	$	11,203	$	9,559
Liabilities and Shareholders’ Equity:
Current maturities of long-term debt	$	—	$	350
Short-term debt	490		153
Borrowings from money pool	—		24
Accounts payable – affiliates	41		39
Other current liabilities	34		23
Total current liabilities	565		589
Long-term debt	1,588		794
Pension and other postretirement benefits	27		37
Other deferred credits and liabilities	85		80
Total liabilities	2,265		1,500
Commitments and Contingencies (Note 5)
Shareholders’ Equity:
Common stock, $.01 par value, 400.0 shares authorized – shares outstanding of 253.3 and 246.2, respectively	3		2
Other paid-in capital, principally premium on common stock	6,179		5,694
Retained earnings	2,757		2,380
Accumulated other comprehensive loss	(1)		(17)
Total shareholders’ equity	8,938		8,059
Total liabilities and shareholders’ equity	$	11,203	$	9,559

SCHEDULE I – CONDENSED FINANCIAL INFORMATION OF PARENT AMEREN CORPORATION CONDENSED STATEMENT OF CASH FLOWS For the Years Ended December 31, 2020, 2019, and 2018
(In millions)	2020		2019		2018
Net cash flows provided by operating activities	$	147	$	491	$	550
Cash flows from investing activities:
Money pool advances, net	86		(26)		(63)
Investments in subsidiaries	(956)		(142)		(208)
Other	8		5		5
Net cash flows used in investing activities	(862)		(163)		(266)
Cash flows from financing activities:
Dividends on common stock	(494)		(472)		(451)
Short-term debt, net	337		(317)		87
Money pool borrowings, net	(24)		(22)		18
Maturities of long-term debt	(350)		—		—
Issuances of long-term debt	798		450		—
Issuances of common stock	476		68		74
Employee payroll taxes related to stock-based compensation	(20)		(29)		(19)
Debt issuance costs	(7)		(4)		—
Net cash flows provided by (used in) financing activities	716		(326)		(291)
Net change in cash, cash equivalents, and restricted cash	$	1	$	2	$	(7)
Cash, cash equivalents, and restricted cash at beginning of year	3		1		8
Cash, cash equivalents, and restricted cash at end of year	$	4	$	3	$	1
Supplemental information:
Cash dividends received from consolidated subsidiaries	$	105	$	445	$	450
Noncash financing activity – Issuance of common stock for stock-based compensation	38		54		35

AMEREN CORPORATION (parent company only)

NOTES TO CONDENSED FINANCIAL STATEMENTS December 31, 2020

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 under Part II, Item 8, of this report for additional information. See Note 13 – Related-party Transactions under Part II, Item 8, of this report for information on the tax allocation agreement between Ameren Corporation (parent company only) and its subsidiaries.

NOTE 2 – CASH AND CASH EQUIVALENTS

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the balance sheet and the statement of cash flows as of December 31, 2020 and 2019:

(In millions)	2020		2019
Cash and cash equivalents	$	—	$	—
Restricted cash included in “Other current assets”	4		3
Total cash, cash equivalents, and restricted cash	$	4	$	3

See Note 1 – Summary of Significant Accounting Policies under Part II, Item 8, of this report for additional information.

NOTE 3 – 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 and interest charges related to non-state-regulated money pool advances and borrowings were immaterial in 2018, 2019, and 2020.

Ameren Corporation (parent company only) had a total of $3 million in guarantees outstanding, primarily for ATXI, that were not recorded on its December 31, 2020 balance sheet. The ATXI guarantees were issued to local governments as assurance for potential remediation of damage caused by ATXI construction.

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 4 – 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, and forward sale agreement related to common stock.

NOTE 5 – 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 6 – OTHER EXPENSE, NET

The following table presents the components of “Other Expense, Net” in the Condensed Statement of Income and Comprehensive Income for the years ended December 31, 2020, 2019, and 2018:

(In millions)	2020		2019		2018
Other Expense, Net
Non-service cost components of net periodic benefit income	$	1	$	2	$	2
Donations	(8)		(3)		(13)
Other expense, net	(1)		(1)		(1)
Total Other Expense, Net	$	(8)	$	(2)	$	(12)

Schedule of Cash and Cash Equivalents Including Restricted Cash

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the balance sheets and the statements of cash flows as of December 31, 2020 and 2019:

	December 31, 2020						December 31, 2019
	Ameren		Ameren Missouri		Ameren Illinois		Ameren		Ameren Missouri		Ameren Illinois
Cash and cash equivalents	$	139	$	136	$	—	$	16	$	9	$	—
Restricted cash included in “Other current assets”	17		5		6		14		4		5
Restricted cash included in “Other assets”	141		—		141		120		—		120
Restricted cash included in “Nuclear decommissioning trust fund”	4		4		—		26		26		—
Total cash, cash equivalents, and restricted cash	$	301	$	145	$	147	$	176	$	39	$	125

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the balance sheet and the statement of cash flows as of December 31, 2020 and 2019:

(In millions)	2020		2019
Cash and cash equivalents	$	—	$	—
Restricted cash included in “Other current assets”	4		3
Total cash, cash equivalents, and restricted cash	$	4	$	3

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, 2020, 2019, and 2018:

	2020			2019		2018
Ameren:
Other Income, Net
Allowance for equity funds used during construction	$	32		$	28	$	36
Interest income on industrial development revenue bonds	25			25		26
Other interest income	4			8		7
Non-service cost components of net periodic benefit income (a)	116			90		70
Miscellaneous income	13			6		8
Donations	(25)		(b)	(12)		(33)
Miscellaneous expense	(14)			(15)		(12)
Total Other Income, Net	$	151		$	130	$	102
Ameren Missouri:
Other Income, Net
Allowance for equity funds used during construction	$	19		$	19	$	27
Interest income on industrial development revenue bonds	25			25		26
Other interest income	1			1		2
Non-service cost components of net periodic benefit income (a)	46			18		17
Miscellaneous income	4			5		4
Donations	(12)		(b)	(3)		(14)
Miscellaneous expense	(7)			(7)		(6)
Total Other Income, Net	$	76		$	58	$	56
Ameren Illinois:
Other Income, Net
Allowance for equity funds used during construction	$	13		$	9	$	9
Interest income	3			6		6
Non-service cost components of net periodic benefit income (a)	48			47		34
Miscellaneous income	6			3		3
Donations	(5)			(5)		(6)
Miscellaneous expense	(6)			(7)		(4)
Total Other Income, Net	$	59		$	53	$	42

(a)For the years ended December 31, 2020, 2019, and 2018, the non-service cost components of net periodic benefit income were adjusted by amounts deferred of $(4) million, $29 million, and $17 million, respectively, due to a tracker for the difference between the level of such costs incurred by Ameren Missouri under GAAP and the level of such costs included in rates.

(b)Includes $8 million pursuant to Ameren Missouri’s March 2020 electric rate order. See Note 2 – Rate and Regulatory Matters for additional information.

The following table presents the components of “Other Expense, Net” in the Condensed Statement of Income and Comprehensive Income for the years ended December 31, 2020, 2019, and 2018:

(In millions)	2020		2019		2018
Other Expense, Net
Non-service cost components of net periodic benefit income	$	1	$	2	$	2
Donations	(8)		(3)		(13)
Other expense, net	(1)		(1)		(1)
Total Other Expense, Net	$	(8)	$	(2)	$	(12)