Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
CASH FLOWS FROM (USED IN) OPERATING ACTIVITIES:
Net income	$ 125.8	$ 145.7
Adjustments to reconcile income to net cash from operating activities:
Depreciation and amortization	276.1	263.4
Amortization of nuclear fuel	15.7	15.1
Amortization of deferred refueling outage	4.6	4.6
Amortization of corporate-owned life insurance	7.5	7.0
Stock compensation	3.9	4.8
Net deferred income taxes and credits	(11.0)	2.7
Allowance for equity funds used during construction	(3.2)	(2.7)
Payments for asset retirement obligations	(4.4)	(2.6)
Equity in earnings of equity method investees, net of income taxes	(1.8)	(1.9)
Income from corporate-owned life insurance	(7.5)	(8.6)
Other	0.3	0.3
Changes in working capital items:
Accounts receivable	66.2	93.5
Accounts receivable pledged as collateral	(20.0)	(6.0)
Fuel inventory and supplies	(24.4)	(51.0)
Prepaid expenses and other current assets	(20.2)	0.3
Accounts payable	(152.9)	(197.8)
Accrued taxes	119.3	107.8
Other current liabilities	(37.1)	(3.2)
Changes in other assets	(10.4)	0.4
Changes in other liabilities	(9.2)	(8.9)
Cash Flows from Operating Activities	317.3	362.9
CASH FLOWS FROM (USED IN) INVESTING ACTIVITIES:
Additions to property, plant and equipment	(618.6)	(527.7)
Purchase of securities - trusts	(19.5)	(11.0)
Sale of securities - trusts	14.8	7.6
Investment in corporate-owned life insurance	(4.1)	(3.8)
Proceeds from investment in corporate-owned life insurance	41.5	42.1
Other investing activities	2.7	(4.1)
Cash Flows used in Investing Activities	(583.2)	(496.9)
CASH FLOWS FROM (USED IN) FINANCING ACTIVITIES:
Short-term debt, net	139.7	214.2
Collateralized short-term borrowings, net	20.0	6.0
Proceeds from long-term debt	326.1	393.7
Retirements of long-term debt	0.0	(300.0)
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	(29.4)	(32.5)
Cash dividends paid	(147.7)	(140.7)
Other financing activities	(5.7)	(4.1)
Cash Flows from Financing Activities	303.6	137.2
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	37.7	3.2
CASH, CASH EQUIVALENTS AND RESTRICTED CASH:
Beginning of period	27.7	25.2
End of period	$ 65.4	$ 28.4