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Segments Of Business
 12 Months Ended
Dec. 31, 2020
Segment Reporting [Abstract]  
Segments Of Business Segments of Business
At December 31, 2020, our operations are divided into two primary reportable segments, the Gas Distribution Operations and the Electric Operations segment. The remainder of our operations, which are not significant enough on a stand-alone basis to warrant treatment as an operating segment, are presented as "Corporate and Other" and primarily are comprised of interest expense on holding company debt, and unallocated corporate costs and activities. Refer to Note 3, "Revenue Recognition," for additional information on our segments and their sources of revenues. The following table provides information about our reportable segments. We use operating income as our primary measurement for each of the reported segments and make decisions on finance, dividends and taxes at the corporate level on a consolidated basis. Segment revenues include intersegment sales to affiliated subsidiaries, which are eliminated in consolidation. Affiliated sales are recognized on the basis of prevailing market, regulated prices or at levels provided for under contractual agreements. Operating income is derived from revenues and expenses directly associated with each segment.
Year Ended December 31, (in millions)
202020192018
Operating Revenues
Gas Distribution Operations
Unaffiliated $3,128.1 $3,509.7 $3,406.4 
Intersegment12.1 13.1 13.1 
Total3,140.2 3,522.8 3,419.5 
Electric Operations
Unaffiliated1,535.9 1,698.4 1,707.4 
Intersegment0.7 0.8 0.8 
Total1,536.6 1,699.2 1,708.2 
Corporate and Other
Unaffiliated 17.7 0.8 0.7 
Intersegment449.8 468.1 517.6 
Total467.5 468.9 518.3 
Eliminations(462.6)(482.0)(531.5)
Consolidated Operating Revenues$4,681.7 $5,208.9 $5,114.5 
Year Ended December 31, (in millions)
202020192018
Operating Income (Loss)
Gas Distribution Operations(1)
$199.1 $675.4 $(254.1)
Electric Operations348.8 406.8 386.1 
Corporate and Other(2)
2.9 (191.5)(7.3)
Consolidated Operating Income$550.8 $890.7 $124.7 
Depreciation and Amortization
Gas Distribution Operations$363.1 $403.2 $301.0 
Electric Operations321.3 277.3 262.9 
Corporate and Other41.5 36.9 35.7 
Consolidated Depreciation and Amortization$725.9 $717.4 $599.6 
Assets
Gas Distribution Operations$13,433.0 $14,224.5 $13,527.0 
Electric Operations6,443.1 6,027.6 5,735.2 
Corporate and Other2,164.4 2,407.7 2,541.8 
Consolidated Assets$22,040.5 $22,659.8 $21,804.0 
Capital Expenditures(3)
Gas Distribution Operations$1,266.9 $1,380.3 $1,315.3 
Electric Operations422.8 468.9 499.3 
Corporate and Other31.1 18.6 — 
Consolidated Capital Expenditures$1,720.8 $1,867.8 $1,814.6 
(1)In 2020, Gas Distribution Operations reflects the loss of $412.4 million on the sale of the Massachusetts Business. For additional information, see Note 1, "Nature of Operations and Summary of Significant Accounting Policies".
(2)In 2019, Corporate and Other reflects an impairment charge of $204.8 million for goodwill related to Columbia of Massachusetts. For additional information, see Note 7, "Goodwill and Other Intangible Assets."
(3)Amounts differ from those presented on the Statements of Consolidated Cash Flows primarily due to the inclusion of capital expenditures in current liabilities, the capitalized portion of the Corporate Incentive Plan payout, and AFUDC Equity.