CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
OPERATING ACTIVITIES
Net Income	$ 802.2	$ 1,005.7
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	833.4	787.1
Deferred Income Taxes	165.2	(113.3)
Allowance for Equity Funds Used During Construction	(57.3)	(43.6)
Mark-to-Market of Risk Management Contracts	(14.8)	40.9
Property Taxes	(88.4)	(89.2)
Deferred Fuel Over/Under-Recovery, Net	(74.5)	43.4
Change in Other Noncurrent Assets	(130.9)	(74.5)
Change in Other Noncurrent Liabilities	141.5	61.8
Changes in Certain Components of Working Capital:
Accounts Receivable, Net	(1.5)	34.9
Fuel, Materials and Supplies	138.6	104.3
Accounts Payable	6.2	(99.5)
Accrued Taxes, Net	(153.4)	(57.7)
Other Current Assets	(23.6)	(91.3)
Other Current Liabilities	(92.7)	(66.8)
Net Cash Flows from Operating Activities	1,450.0	1,442.2
INVESTING ACTIVITIES
Construction Expenditures	(2,100.2)	(1,761.7)
Purchases of Investment Securities	(602.7)	(590.0)
Sales of Investment Securities	586.5	572.5
Acquisitions of Nuclear Fuel	(35.8)	(33.7)
Proceeds from Sale of Equity Method Investment	0.0	114.0
Other Investing Activities	50.2	29.6
Net Cash Flows Used for Investing Activities	(2,102.0)	(1,669.3)
FINANCING ACTIVITIES
Issuance of Common Stock	75.4	40.6
Issuance of Long-term Debt	561.6	859.9
Issuance of Short-term Debt with Original Maturities greater than 90 Days	319.9	376.6
Change in Short-term Debt with Original Maturities less than 90 Days, Net	752.4	840.9
Retirement of Long-term Debt	(229.1)	(1,162.2)
Redemption of Short-term Debt with Original Maturities Greater than 90 Days	(250.0)	(310.1)
Principal Payments for Finance Lease Obligations	(12.5)	(17.0)
Dividends Paid on Common Stock	(501.0)	(466.9)
Other Financing Activities	(18.7)	(31.9)
Net Cash Flows from Financing Activities	698.0	129.9
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	46.0	(97.2)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	246.0	379.0
Cash, Cash Equivalents and Restricted Cash at End of Period	292.0	281.8
SUPPLEMENTARY INFORMATION
Cash Paid for Interest, Net of Capitalized Amounts	350.2	368.3
Net Cash Paid for Income Taxes	7.1	16.1
Cash Paid (Received) for Transferable Tax Credits	(17.2)	(62.0)
Noncash Acquisitions Under Finance Leases	7.9	7.0
Construction Expenditures Included in Current Liabilities as of March 31,	$ 1,040.9	$ 837.0