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Revenue Recognition (Tables)
 9 Months Ended
Sep. 30, 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 September 30, 2023
(in millions)
Gas Distribution Operations(2)
Electric Operations(3)
Corporate and OtherTotal
Customer Revenues(1)
Residential$351.7 $176.0 $— $527.7 
Commercial108.5 156.6 — 265.1 
Industrial46.3 115.9 — 162.2 
Off-system9.8 — — 9.8 
Miscellaneous8.6 29.2 — 37.8 
Total Customer Revenues$524.9 $477.7 $— $1,002.6 
Other Revenues3.6 21.0 0.2 24.8 
Total Operating Revenues$528.5 $498.7 $0.2 $1,027.4 
(1)Customer revenue amounts exclude intersegment revenues. See Note 17, "Business Segment Information," for discussion of intersegment revenues.
(2)Amounts included in Gas Distributions Operations Other revenues primarily relate to weather normalization adjustment mechanisms.
(3)Amounts included in Electric Operations Other revenues primarily relate to MISO multi-value projects and revenue from non-jurisdictional transmission assets.
Three Months Ended September 30, 2022
(in millions)
Gas Distribution Operations(2)
Electric Operations(3)
Corporate and Other(4)
Total
Customer Revenues(1)
Residential$330.1 $178.8 $— $508.9 
Commercial114.6 158.9 — 273.5 
Industrial42.6 151.9 — 194.5 
Off-system72.7 — — 72.7 
Miscellaneous7.3 1.3 — 8.6 
Total Customer Revenues$567.3 $490.9 $— $1,058.2 
Other Revenues5.1 25.4 0.8 31.3 
Total Operating Revenues$572.4 $516.3 $0.8 $1,089.5 
(1)Customer revenue amounts exclude intersegment revenues. See Note 17, "Business Segment Information," for discussion of intersegment revenues.
(2)Amounts included in Gas Distributions Operations Other revenues primarily relate to weather normalization adjustment mechanisms.
(3)Amounts included in Electric Operations Other revenues primarily relate to MISO multi-value projects and revenue from non-jurisdictional transmission assets.
(4)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.
Nine months ended September 30, 2023
(in millions)
Gas Distribution Operations(2)
Electric Operations(3)
Corporate and OtherTotal
Customer Revenues(1)
Residential$1,789.3 $449.2 $— $2,238.5 
Commercial621.2 437.6 — 1,058.8 
Industrial169.3 362.7 — 532.0 
Off-system49.9 — — 49.9 
Miscellaneous38.7 48.0 — 86.7 
Total Customer Revenues$2,668.4 $1,297.5 $— $3,965.9 
Other Revenues54.2 62.7 0.6 117.5 
Total Operating Revenues$2,722.6 $1,360.2 $0.6 $4,083.4 
(1)Customer revenue amounts exclude intersegment revenues. See Note 17, "Business Segment Information," for discussion of intersegment revenues.
(2)Amounts included in Gas Distributions Operations Other revenues primarily relate to weather normalization adjustment mechanisms.
(3)Amounts included in Electric Operations Other revenues primarily relate to MISO multi-value projects and revenue from non-jurisdictional transmission assets.
Nine months ended September 30, 2022
(in millions)
Gas Distribution Operations(2)
Electric Operations(3)
Corporate and Other(4)
Total
Customer Revenues(1)
Residential$1,772.0 $454.3 $— $2,226.3 
Commercial631.7 428.1 — 1,059.8 
Industrial158.5 420.4 — 578.9 
Off-system150.5 — — 150.5 
Miscellaneous29.9 9.6 — 39.5 
Total Customer Revenues$2,742.6 $1,312.4 $— $4,055 
Other Revenues7.6 71.1 12.3 91.0 
Total Operating Revenues$2,750.2 $1,383.5 $12.3 $4,146.0 
(1)Customer revenue amounts exclude intersegment revenues. See Note 17, "Business Segment Information," for discussion of intersegment revenues.
(2)Amounts included in Gas Distributions Operations Other revenues primarily relate to weather normalization adjustment mechanisms.
(3)Amounts included in Electric Operations Other revenues primarily relate to MISO multi-value projects and revenue from non-jurisdictional transmission assets.
(4)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 nine months ended September 30, 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 September 30, 2023336.6 198.3 
Accounts Receivable, Allowance for Credit Loss A rollforward of our allowance for credit losses as of September 30, 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 provisions22.4 4.7 — 27.1 
Write-offs charged against allowance(43.9)(4.3)— (48.2)
Recoveries of amounts previously written off12.5 0.3 — 12.8 
Balance as of September 30, 2023$8.2 $6.6 $0.8 $15.6 
(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