Amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy. For classified balance sheets, represents the current amount receivable, that is amounts expected to be collected within one year or the normal operating cycle, if longer.

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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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Represents total net balance of costs to be recovered for damage to the PSB through both insurance settlement and collection through customer rates.

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Property, Plant, and Equipment - Public Service Building (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Feb. 28, 2022
Property, plant, and equipment
Proceeds from insurance settlement	$ 0.0	$ 23.2	$ 0.0
Building \| WE
Property, plant, and equipment
Costs incurred for repairs and restorations	92.4
Proceeds from insurance settlement		20.0
Costs included in other operation and maintenance		$ 12.5
Costs to be recovered for damage to the PSB	$ 59.9
Building \| WE \| Subsequent event
Property, plant, and equipment
Recovery expected as a result of an insurance settlement				$ 41.0