Acquisitions - Jayhawk (Details) $ in Millions	1 Months Ended
	Feb. 28, 2021 USD ($) MW	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Asset Acquisition - Allocation of Purchase Price to Assets acquired, Liabilities assumed, less Noncontrolling Interest
Net property, plant, and equipment		$ 31,581.5	$ 29,113.8
Long-term Debt		$ (16,631.1)	(15,464.2)
Jayhawk | WECI
Asset Acquisition
Ownership interest in generating facility acquired	90.00%
Capacity of generation unit | MW	190
Total purchase price	$ 119.9
Additional capital expenditures			161.3
Current project investment			$ 281.2
Duration of offtake agreement for the sale of energy produced	10 years
Percentage of tax benefits entitled to	99.00%
Number of years will receive tax benefits	10 years
Asset Acquisition - Allocation of Purchase Price to Assets acquired, Liabilities assumed, less Noncontrolling Interest
Net property, plant, and equipment	$ 145.3
Long-term liabilities	(11.8)
Long-term Debt	(7.3)
Noncontrolling interest	(6.3)
Total purchase price	$ 119.9