Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020		Sep. 30, 2019
Cash flows from operating activities:
Net income	$ (2.8)		$ 61.4
Adjustments to reconcile net income / (loss) to net cash from operating activities:
Depreciation and amortization	55.1		34.2
Amortization of Debt Issuance Costs	4.4		4.3
Gain (Loss) on Extinguishment of Debt	31.7		44.9
Deferred income taxes	32.3		(8.7)
Gain (Loss) on Disposition of Business, Including Discontinued Operation	(4.5)		(0.1)
Changes in certain assets and liabilities:
Accounts receivable, net	(12.7)		(18.0)
Inventories	(5.5)		3.2
Taxes applicable to subsequent years	(57.8)		(56.2)
Deferred regulatory costs, net	17.1		(2.9)
Accounts payable	(24.6)		(5.1)
Accrued taxes payable / receivable	(63.0)		(71.0)
Accrued interest	7.4		12.9
Increase (Decrease) in Obligation, Pension and Other Postretirement Benefits	(10.8)		(9.3)
Other	2.4		1.1
Net Cash Provided by (Used in) Operating Activities	81.7		136.3
Cash flows from investing activities:
Capital expenditures	(128.7)		(122.4)
Payments for Removal Costs	(1.0)		0.0
Proceeds from Sale of Productive Assets	5.1	[1]	0.0
Other investing activities, net	(0.8)		(3.5)
Net cash used in investing activities	(125.4)		(125.9)
Cash flows from financing activities:
Payments of Deferred Finance Costs	(7.8)		(9.2)
Repayments of Lines of Credit	(219.0)		(35.0)
Proceeds from Issuance of Long-term Debt	555.0		821.7
Proceeds from Lines of Credit	165.0		133.0
Retirement of long-term debt, including early payment premium	(550.8)		(978.0)
Proceeds from Contributions from Parent	98.0		0.0
Proceeds from (Payments for) Other Financing Activities	(0.1)		(0.2)
Net cash provided by / (used in) financing activities	40.3		(67.7)
Cash, cash equivalents, and restricted cash:
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect	(3.4)		(57.3)
Restricted Cash and Cash Equivalents	43.6		54.4
Supplemental cash flow information:
Interest paid, net of amounts capitalized	49.7		47.1
Non-cash financing and investing activities:
Accruals for capital expenditures	16.5		2.3
Non-cash Proceeds from Sale of Business	3.0		0.0
Non-cash capital contribution	0.0		2.7
Income Taxes Paid, Net	(51.9)		1.3
Subsidiaries [Member]
Cash flows from operating activities:
Net income	47.3		103.7
Adjustments to reconcile net income / (loss) to net cash from operating activities:
Depreciation and amortization	53.7		52.9
Amortization of Debt Issuance Costs	2.9		2.8
Deferred income taxes	(0.1)		(17.2)
Changes in certain assets and liabilities:
Accounts receivable, net	1.7		18.9
Inventories	2.1		(2.1)
Taxes applicable to subsequent years	57.7		54.3
Deferred regulatory costs, net	(17.1)		2.9
Accounts payable	(20.6)		(4.8)
Accrued taxes payable / receivable	(71.6)		(65.6)
Accrued interest	4.6		6.0
Increase (Decrease) in Obligation, Pension and Other Postretirement Benefits	(10.8)		(9.3)
Other	(0.1)		(3.6)
Net Cash Provided by (Used in) Operating Activities	49.7		138.9
Cash flows from investing activities:
Capital expenditures	(125.1)		(121.1)
Other investing activities, net	(0.7)		(3.5)
Net cash used in investing activities	(125.8)		(124.6)
Cash flows from financing activities:
Payments of Deferred Finance Costs	(1.2)		(4.6)
Repayments of Lines of Credit	(115.0)		0.0
Proceeds from Issuance of Long-term Debt	140.0		422.3
Proceeds from Lines of Credit	75.0		60.0
Retirement of long-term debt, including early payment premium	(140.0)		(436.1)
Proceeds from Contributions from Parent	150.0		0.0
Proceeds from (Payments for) Other Financing Activities	(0.1)		(0.1)
Net cash provided by / (used in) financing activities	81.0		(48.5)
Cash, cash equivalents, and restricted cash:
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect	4.9		(34.2)
Restricted Cash and Cash Equivalents	26.2		32.0
Supplemental cash flow information:
Interest paid, net of amounts capitalized	10.5		10.8
Proceeds from Income Tax Refunds	(0.1)		(19.0)
Non-cash financing and investing activities:
Accruals for capital expenditures	16.4		2.0
Payments of Ordinary Dividends, Common Stock	$ (27.7)		$ (90.0)

[1] Proceeds from sale of assets include $5.1 million of proceeds received from AES during the nine months ended September 30, 2020 related to the 2019 sale of software previously recorded on AES Ohio Generation. There was no gain or loss recorded on the transaction.