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Other Commitments And Contingencies (Tables) | 6 Months Ended
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Jun. 30, 2021
Commitments and Contingencies Disclosure [Abstract] |
Schedule of Restructuring Reserve by Type of Cost | A rollforward of the one-time employee separation benefits accrual for the six months ended June 30, 2021 is presented below:
(in millions) | Balance as of January 1, 2021 | Changes Attributable to Costs Incurred(1) | Costs Paid | Adjustments | Balance as of June 30, 2021(2)
One-time Employee Separation Benefits | 11.1 |  | 7.2 |  | (12.4) |  | — |  | 5.9 |
(1)This activity is presented within "Operation and maintenance" in our Condensed Statements of Consolidated Income (Loss) (unaudited). (2)This activity is presented within "Accrued compensation and employee benefits" in our Condensed Consolidated Balance Sheets (unaudited).

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- Definition Tabular disclosure of an entity's restructuring reserve that occurred during the period associated with the exit from or disposal of business activities or restructurings for each major type of cost. This element may also include a description of any reversal and other adjustment made during the period to the amount of an accrued liability for restructuring activities. This element may be used to encapsulate the roll forward presentations of an entity's restructuring reserve by type of cost and in total, and explanation of changes that occurred in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)(2)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
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