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Revenue Recognition (Tables)
 3 Months Ended
Mar. 31, 2023
Revenue from Contract with Customer [Abstract]  
Disaggregation of Revenue
The tables below reconcile revenue disaggregation by customer class to segment revenue, as well as to revenues reflected on the Condensed Statements of Consolidated Income (unaudited):
Three Months Ended March 31, 2023
(in millions)
Gas Distribution Operations(2)
Electric OperationsCorporate and OtherTotal
Customer Revenues(1)
Residential$987.0 $150.4 $— $1,137.4 
Commercial360.6 150.9 — 511.5 
Industrial71.9 134.2 — 206.1 
Off-system17.2 — — 17.2 
Miscellaneous18.4 5.5 — 23.9 
Total Customer Revenues$1,455.1 $441.0 $— $1,896.1 
Other Revenues46.2 23.5 0.2 69.9 
Total Operating Revenues$1,501.3 $464.5 $0.2 $1,966.0 
(1)Customer revenue amounts exclude intersegment revenues. See Note 18, "Business Segment Information," for discussion of intersegment revenues.
(2)Amounts included in Gas Distributions Operations Other revenues primarily relate to weather normalization adjustments driven by warmer weather in 2023 compared to 2022.
Three Months Ended March 31, 2022
(in millions)
Gas Distribution OperationsElectric Operations
Corporate and Other(2)
Total
Customer Revenues(1)
Residential$976.9 $138.5 $— $1,115.4 
Commercial356.5 134.5 — 491.0 
Industrial67.8 129.8 — 197.6 
Off-system18.7 — — 18.7 
Miscellaneous14.0 3.6 — 17.6 
Total Customer Revenues$1,433.9 $406.4 $— $1,840.3 
Other Revenues2.8 23.7 6.5 33.0 
Total Operating Revenues$1,436.7 $430.1 $6.5 $1,873.3 
(1)Customer revenue amounts exclude intersegment revenues. See Note 18, "Business Segment Information," for discussion of intersegment revenues.
(2)Amounts associated with Corporate and Other revenues primarily relate to the Transition Services Agreement entered into in connection with the sale of the Massachusetts Business.
Customer Accounts Receivable The opening and closing balances of customer receivables for the three months ended March 31, 2023 are presented in the table below. We had no significant contract assets or liabilities during the period. Additionally, we have not incurred any significant costs to obtain or fulfill contracts.
(in millions)Customer Accounts Receivable, Billed (less reserve)Customer Accounts Receivable, Unbilled (less reserve)
Balance as of December 31, 2022$560.5 $453.0 
Balance as of March 31, 2023595.3 304.6 
Accounts Receivable, Allowance for Credit Loss A rollforward of our allowance for credit losses as of March 31, 2023 and December 31, 2022 are presented in the table below:

(in millions)
Gas Distribution OperationsElectric OperationsCorporate and OtherTotal
Balance as of January 1, 2023$17.2 $5.9 $0.8 $23.9 
Current period provisions10.4 2.0 — 12.4 
Write-offs charged against allowance(12.1)(1.5)— (13.6)
Recoveries of amounts previously written off8.5 0.2 — 8.7 
Balance as of March 31, 2023$24.0 $6.6 $0.8 $31.4 
(in millions)
Gas Distribution OperationsElectric OperationsCorporate and OtherTotal
Balance as of January 1, 2022$18.9 $3.8 $0.8 $23.5 
Current period provisions29.1 6.9 — 36.0 
Write-offs charged against allowance(52.1)(5.3)— (57.4)
Recoveries of amounts previously written off21.3 0.5 — 21.8 
Balance as of December 31, 2022$17.2 $5.9 $0.8 $23.9