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SEGMENT INFORMATION (Tables)

9 Months Ended

Sep. 30, 2020

Segment Reporting [Abstract]

Financial information of reportable segments

The following tables show summarized financial information related to our reportable segments for the three and nine months ended September 30, 2020 and 2019:

						Utility Operations
(in millions)						Wisconsin						Illinois						Other States						Total Utility Operations						Electric Transmission						Non-Utility Energy Infrastructure						Corporate and Other						Reconciling Eliminations						WEC Energy Group Consolidated
Three Months Ended
September 30, 2020
External revenues						$	1,366.3					$	221.9					$	48.3					$	1,636.5					$	—					$	13.9					$	0.6					$	—					$	1,651.0
Intersegment revenues						—						—						—						—						—						109.6						—						(109.6)						—
Other operation and maintenance						363.8						109.2						20.4						493.4						—						5.9						1.0						(1.6)						498.7
Depreciation and amortization						169.7						49.9						8.5						228.1						—						24.5						6.5						(14.1)						245.0
Operating income (loss)						349.0						24.5						(2.0)						371.5						—						91.3						(6.9)						(85.7)						370.2
Equity in earnings of transmission affiliates						—						—						—						—						40.1						—						—						—						40.1
Interest expense						139.1						15.6						2.7						157.4						4.9						15.0						30.4						(85.7)						122.0

						Utility Operations
(in millions)						Wisconsin						Illinois						Other States						Total Utility Operations						Electric Transmission						Non-Utility Energy Infrastructure						Corporate and Other						Reconciling Eliminations						WEC Energy Group Consolidated
Three Months Ended
September 30, 2019
External revenues						$	1,339.3					$	198.0					$	48.9					$	1,586.2					$	—					$	20.5					$	1.3					$	—					$	1,608.0
Intersegment revenues						—						—						—						—						—						98.9						—						(98.9)						—
Other operation and maintenance						400.2						101.8						22.0						524.0						—						3.9						1.3						—						529.2
Depreciation and amortization						155.6						45.7						6.8						208.1						—						23.3						6.0						(3.6)						233.8
Operating income (loss)						290.8						24.8						(2.2)						313.4						—						90.3						(6.0)						(86.8)						310.9
Equity in earnings of transmission affiliates						—						—						—						—						38.7						—						—						—						38.7
Interest expense						142.9						14.7						2.3						159.9						3.0						15.5						35.9						(88.5)						125.8

						Utility Operations
(in millions)						Wisconsin						Illinois						Other States						Total Utility Operations						Electric Transmission						Non-Utility Energy Infrastructure						Corporate and Other						Reconciling Eliminations						WEC Energy Group Consolidated
Nine Months Ended
September 30, 2020
External revenues						$	4,071.4					$	930.7					$	261.4					$	5,263.5					$	—					$	42.8					$	2.0					$	—					$	5,308.3
Intersegment revenues						—						—						—						—						—						335.6						—						(335.6)						—
Other operation and maintenance						1,044.0						306.5						62.5						1,413.0						—						18.7						2.9						(7.1)						1,427.5
Depreciation and amortization						502.7						146.0						24.6						673.3						—						73.4						19.0						(39.1)						726.6
Operating income (loss)						1,053.4						245.6						41.4						1,340.4						—						274.2						(20.1)						(258.9)						1,335.6
Equity in earnings of transmission affiliates						—						—						—						—						132.8						—						—						—						132.8
Interest expense						422.2						47.7						7.4						477.3						14.6						45.4						98.1						(259.6)						375.8

						Utility Operations
(in millions)						Wisconsin						Illinois						Other States						Total Utility Operations						Electric Transmission						Non-Utility Energy Infrastructure						Corporate and Other						Reconciling Eliminations						WEC Energy Group Consolidated
Nine Months Ended
September 30, 2019
External revenues						$	4,226.0					$	977.4					$	302.9					$	5,506.3					$	—					$	65.4					$	3.9					$	—					$	5,575.6
Intersegment revenues						—						—						—						—						—						305.1						—						(305.1)						—
Other operation and maintenance						1,156.8						337.0						73.0						1,566.8						—						14.5						2.1						—						1,583.4
Depreciation and amortization						459.5						135.2						20.0						614.7						—						68.8						18.4						(11.8)						690.1
Operating income (loss)						922.8						205.3						43.9						1,172.0						—						274.3						(17.0)						(261.0)						1,168.3
Equity in earnings of transmission affiliates						—						—						—						—						111.7						—						—						—						111.7
Interest expense						429.0						43.4						6.5						478.9						8.3						46.7						107.5						(267.1)						374.3

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- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 25
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8813-108599

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599

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- References

No definition available.

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