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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

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- Definition Amount of cash inflow for proceeds from settlement of insurance claim, classified as investing activities. Excludes insurance settlement classified as operating activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 21B -URI http://asc.fasb.org/extlink&oid=123570139&loc=SL94080549-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3179-108585 + Details
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