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Revenue Recognition (Tables)
 6 Months Ended
Jun. 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 June 30, 2023
(in millions)
Gas Distribution Operations(2)
Electric Operations(3)
Corporate and OtherTotal
Customer Revenues(1)
Residential$450.6 $122.8 $— $573.4 
Commercial152.1 130.1 — 282.2 
Industrial51.1 112.6 — 163.7 
Off-system22.9 — — 22.9 
Miscellaneous11.7 13.3 — 25.0 
Total Customer Revenues$688.4 $378.8 $— $1,067.2 
Other Revenues4.4 18.2 0.2 22.8 
Total Operating Revenues$692.8 $397.0 $0.2 $1,090.0 
(1)Customer revenue amounts exclude intersegment revenues. See Note 19, "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 June 30, 2022
(in millions)
Gas Distribution Operations(2)
Electric Operations(3)
Corporate and Other(4)
Total
Customer Revenues(1)
Residential$465.0 $137.0 $— $602.0 
Commercial160.6 134.7 — 295.3 
Industrial48.1 138.7 — 186.8 
Off-system59.1 — — 59.1 
Miscellaneous8.6 4.7 — 13.3 
Total Customer Revenues$741.4 $415.1 $— $1,156.5 
Other Revenues(0.3)22.0 5.0 26.7 
Total Operating Revenues$741.1 $437.1 $5.0 $1,183.2 
(1)Customer revenue amounts exclude intersegment revenues. See Note 19, "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.
Six months ended June 30, 2023
(in millions)
Gas Distribution Operations(2)
Electric Operations(3)
Corporate and OtherTotal
Customer Revenues(1)
Residential$1,437.6 $273.2 $— $1,710.8 
Commercial512.7 281.0 — 793.7 
Industrial123.0 246.8 — 369.8 
Off-system40.1 — — 40.1 
Miscellaneous30.1 18.8 — 48.9 
Total Customer Revenues$2,143.5 $819.8 $— $2,963.3 
Other Revenues50.6 41.7 0.4 92.7 
Total Operating Revenues$2,194.1 $861.5 $0.4 $3,056.0 
(1)Customer revenue amounts exclude intersegment revenues. See Note 19, "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.
Six months ended June 30, 2022
(in millions)
Gas Distribution Operations(2)
Electric Operations(3)
Corporate and Other(4)
Total
Customer Revenues(1)
Residential$1,441.9 $275.5 $— $1,717.4 
Commercial517.1 269.2 — 786.3 
Industrial115.9 268.5 — 384.4 
Off-system77.8 — — 77.8 
Miscellaneous22.6 8.3 — 30.9 
Total Customer Revenues$2,175.3 $821.5 $— $2,996.8 
Other Revenues2.5 45.7 11.5 59.7 
Total Operating Revenues$2,177.8 $867.2 $11.5 $3,056.5 
(1)Customer revenue amounts exclude intersegment revenues. See Note 19, "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 six months ended June 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 June 30, 2023372.9 191.5 
Accounts Receivable, Allowance for Credit Loss A rollforward of our allowance for credit losses as of June 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 provisions16.8 3.2 — 20.0 
Write-offs charged against allowance(24.0)(2.8)— (26.8)
Recoveries of amounts previously written off10.4 0.3 — 10.7 
Balance as of June 30, 2023$20.4 $6.6 $0.8 $27.8 
(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