Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income	$ 145.7	$ 125.6
Adjustments to reconcile income to net cash from operating activities:
Depreciation and amortization	263.4	229.0
Amortization of nuclear fuel	15.1	15.8
Amortization of deferred refueling outage	4.6	6.3
Amortization of corporate-owned life insurance	7.0	6.7
Non-cash compensation	4.8	4.5
Net deferred income taxes and credits	2.7	0.4
Allowance for equity funds used during construction	(2.7)	(7.4)
Payments for asset retirement obligations	(2.6)	(1.3)
Equity in earnings of equity method investees, net of income taxes	(1.9)	(2.1)
Income from corporate-owned life insurance	(8.6)	(0.7)
Other	0.3	0.3
Changes in working capital items:
Accounts receivable	93.5	29.8
Accounts receivable pledged as collateral	(6.0)	(19.0)
Fuel inventory and supplies	(51.0)	(45.8)
Prepaid expenses and other current assets	0.3	(48.0)
Accounts payable	(197.8)	(157.2)
Accrued taxes	107.8	108.7
Other current liabilities	(3.2)	(13.7)
Changes in other assets	0.4	13.9
Changes in other liabilities	(8.9)	19.3
Cash Flows from Operating Activities	362.9	265.1
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Additions to property, plant and equipment	(527.7)	(524.7)
Purchase of securities - trusts	(11.0)	(12.6)
Sale of securities - trusts	7.6	8.7
Investment in corporate-owned life insurance	(3.8)	(2.9)
Proceeds from investment in corporate-owned life insurance	42.1	1.1
Other investing activities	(4.1)	(0.9)
Cash Flows used in Investing Activities	(496.9)	(531.3)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short-term debt, net	214.2	(267.1)
Proceeds from term loan facility	0.0	500.0
Collateralized short-term borrowings, net	6.0	19.0
Proceeds from long-term debt	393.7	247.4
Retirements of long-term debt	(300.0)	(100.0)
Borrowings against cash surrender value of corporate-owned life insurance	0.6	0.6
Repayment of borrowings against cash surrender value of corporate-owned life insurance	(32.5)	0.0
Cash dividends paid	(140.7)	(131.3)
Other financing activities	(4.1)	(6.4)
Cash Flows from Financing Activities	137.2	262.2
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	3.2	(4.0)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	25.2	26.2
End of period	$ 28.4	$ 22.2