Amount of cash inflow for proceeds from settlement of insurance claim, classified as investing activities. Excludes insurance settlement classified as operating activities.

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Amount of other operating expense of regulated operation.

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Total costs incurred for repairs and restorations. Includes costs that were capitalized and expensed.

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Property, Plant, and Equipment - Public Service Building (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Property, plant, and equipment
Proceeds from insurance settlement		$ 41.6	$ 0.0	$ 23.2
Building \| WE
Property, plant, and equipment
Costs incurred for repairs and restorations		95.3
Proceeds from insurance settlement	$ 41.0			20.0
Costs included in other operation and maintenance				$ 12.5
Repairs and restorations to be recovered through rates		$ 21.8