CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
OPERATING ACTIVITIES
Net Income	$ 2,975.8	$ 2,212.6	$ 2,305.6
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	3,289.9	3,090.4	3,202.8
Deferred Income Taxes	58.3	185.1	(137.2)
Loss on the Expected Sale of the Kentucky Operations	0.0	0.0	363.3
Loss on the Sale of the Competitive Contracted Renewables Portfolio	0.0	92.7	0.0
Asset Impairments and Other Related Charges	142.5	85.6	48.8
Impairment of Equity Method Investment	0.0	19.0	188.0
Allowance for Equity Funds Used During Construction	(211.0)	(174.9)	(133.7)
Mark-to-Market of Risk Management Contracts	(80.4)	8.8	15.5
Amortization of Nuclear Fuel	102.9	96.6	82.9
Property Taxes	(45.4)	(41.1)	(41.2)
Deferred Fuel Over/Under-Recovery, Net	277.0	892.8	(319.2)
Gain on the Sale of Mineral Rights	0.0	0.0	(116.3)
Establishment of 2017-2019 Virginia Triennial Review Regulatory Asset	0.0	0.0	(37.0)
Change in Regulatory Assets	(174.3)	(315.8)	(46.7)
Change in Other Noncurrent Assets	(347.6)	(465.1)	(187.7)
Change in Other Noncurrent Liabilities	306.3	29.0	337.8
Changes in Certain Components of Working Capital:
Accounts Receivable, Net	(156.0)	236.5	(681.7)
Fuel, Materials and Supplies	171.6	(504.0)	(313.9)
Accounts Payable	85.1	(253.2)	489.2
Accrued Taxes, Net	240.2	22.5	105.4
Other Current Assets	(13.2)	(43.9)	109.0
Other Current Liabilities	182.6	(161.4)	54.3
Net Cash Flows from Operating Activities	6,804.3	5,012.2	5,288.0
INVESTING ACTIVITIES
Construction Expenditures	(7,630.7)	(7,378.3)	(6,671.7)
Purchases of Investment Securities	(2,922.5)	(2,863.6)	(2,784.2)
Sales of Investment Securities	2,878.0	2,795.1	2,743.8
Acquisitions of Nuclear Fuel	(139.9)	(128.2)	(100.7)
Acquisitions of Renewable Energy Facilities	(399.5)	(155.2)	(1,207.3)
Proceeds from Sales of Assets	362.2	1,341.4	218.0
Proceeds from Sale of Equity Method Investment	114.0	0.0	0.0
Other Investing Activities	141.9	122.1	50.3
Net Cash Flows Used for Investing Activities	(7,596.5)	(6,266.7)	(7,751.8)
FINANCING ACTIVITIES
Issuance of Common Stock, Net	552.1	999.6	826.5
Issuance of Long-term Debt	5,117.0	5,462.8	4,649.7
Issuance of Short-term Debt with Original Maturities greater than 90 Days	723.8	1,069.9	833.9
Change in Short-term Debt with Original Maturities less than 90 Day, Net	(159.1)	(1,223.1)	1,650.4
Retirement of Long-term Debt	(2,685.0)	(2,196.1)	(2,345.4)
Redemption of Short-term Debt with Original Maturities greater than 90 Days	(871.1)	(1,128.8)	(986.1)
Principal Payments for Finance Lease Obligations	(64.8)	(68.3)	(309.5)
Dividends Paid on Common Stock	(1,903.9)	(1,760.4)	(1,645.2)
Other Financing Activities	(49.8)	(78.6)	(105.4)
Net Cash Flows from Financing Activities	659.2	1,077.0	2,568.9
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	(133.0)	(177.5)	105.1
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	379.0	556.5	451.4
Cash, Cash Equivalents and Restricted Cash at End of Period	$ 246.0	$ 379.0	$ 556.5