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Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2021

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) for the three months ended March 31, 2021 and March 31, 2020:

Three Months Ended March 31, 2021 (in millions)			Gas Distribution Operations						Electric Operations						Corporate and Other(2)						Total
Customer Revenues(1)
Residential			$	773.5					$	129.2					$	—					$	902.7
Commercial			271.4						122.9						—						394.3
Industrial			57.9						122.9						—						180.8
Off-system			14.4						—						—						14.4
Miscellaneous			9.9						4.2						0.2						14.3
Total Customer Revenues			$	1,127.1					$	379.2					$	0.2					$	1,506.5
Other Revenues			8.7						23.3						7.1						39.1
Total Operating Revenues			$	1,135.8					$	402.5					$	7.3					$	1,545.6

(1) Customer revenue amounts exclude intersegment revenues. See Note 20, "Business Segment Information," for discussion of intersegment revenues.

(2) Other revenues related to the Transition Services Agreement entered into in connection with the sale of the Massachusetts Business.

Three Months Ended March 31, 2020 (in millions)			Gas Distribution Operations						Electric Operations						Corporate and Other						Total
Customer Revenues(1)
Residential			$	796.5					$	119.2					$	—					$	915.7
Commercial			269.4						120.2						—						389.6
Industrial			74.2						109.1						—						183.3
Off-system			18.7						—						—						18.7
Miscellaneous			12.5						5.9						0.2						18.6
Total Customer Revenues			$	1,171.3					$	354.4					$	0.2					$	1,525.9
Other Revenues			56.7						22.9						—						79.6
Total Operating Revenues			$	1,228.0					$	377.3					$	0.2					$	1,605.5

(1) Customer revenue amounts exclude intersegment revenues. See Note 20, "Business Segment Information," for discussion of intersegment revenues.

Customer Accounts Receivable

The opening and closing balances of customer receivables for the three months ended March 31, 2021 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, 2020			$	400.0					$	327.2
Balance as of March 31, 2021			507.4						244.3
Increase (Decrease)			$	107.4					$	(82.9)

Financing Receivable, Allowance for Credit Loss

A rollforward of our allowance for credit losses for the three months ended March 31, 2021 are presented in the table below:

Three Months Ended March 31, 2021 (in millions)			Gas Distribution Operations						Electric Operations						Corporate and Other						Total
Beginning balance			$	41.8					$	9.7					$	0.8					$	52.3
Current period provisions			5.9						2.9						—						8.8
Write-offs charged against allowance			(9.0)						(2.4)						—						(11.4)
Recoveries of amounts previously written off			4.1						0.1						—						4.2
Ending balance of the allowance for credit losses			$	42.8					$	10.3					$	0.8					$	53.9

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
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-Publisher FASB
-Name Accounting Standards Codification
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