XML 38 R23.htm IDEA: XBRL DOCUMENT
v3.21.2

Segment Information | 9 Months Ended
--- | ---
Sep. 30, 2021
Segment Reporting [Abstract] |
Segment Information | Segment Infor mation - MGE Energy and MGE. MGE Energy operates in the following business segments: electric utility, gas utility, nonregulated energy, transmission investment, and all other. See the 2020 Annual Report on Form 10-K for additional discussion of each of these segments.
(In thousands) |  |  |  |  |  | Nonregulated |  | Transmission |  | All |  | Consolidation/ |  | Consolidated
MGE Energy |  | Electric |  | Gas |  | Energy |  | Investment |  | Others |  | Elimination |  | Total
Three Months Ended September 30, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues from external customers |  | $121,639 |  | $24,020 |  | $214 |  | $— |  | $— |  | $— |  | $145,873
Interdepartmental revenues |  | 89 |  | 6,689 |  | 10,224 |  | — |  | — |  | (17,002) |  | —
Total operating revenues |  | 121,728 |  | 30,709 |  | 10,438 |  | — |  | — |  | (17,002) |  | 145,873
Equity in earnings of investments |  | — |  | — |  | — |  | 2,532 |  | — |  | — |  | 2,532
Net income (loss) |  | 27,833 |  | (218) |  | 5,386 |  | 1,842 |  | 74 |  | — |  | 34,917
Three Months Ended September 30, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues from external customers |  | $116,354 |  | $18,643 |  | $214 |  | $— |  | $— |  | $— |  | $135,211
Interdepartmental revenues |  | 209 |  | 3,494 |  | 10,102 |  | — |  | — |  | (13,805) |  | —
Total operating revenues |  | 116,563 |  | 22,137 |  | 10,316 |  | — |  | — |  | (13,805) |  | 135,211
Equity in earnings of investments |  | — |  | — |  | — |  | 2,353 |  | — |  | — |  | 2,353
Net income (loss) |  | 24,761 |  | 221 |  | 5,251 |  | 1,710 |  | (149) |  | — |  | 31,794
Nine Months Ended September 30, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues from external customers |  | $324,110 |  | $119,944 |  | $464 |  | $— |  | $— |  | $— |  | $444,518
Interdepartmental revenues |  | 316 |  | 14,377 |  | 30,595 |  | — |  | — |  | (45,288) |  | —
Total operating revenues |  | 324,426 |  | 134,321 |  | 31,059 |  | — |  | — |  | (45,288) |  | 444,518
Equity in earnings of investments |  | — |  | — |  | — |  | 7,440 |  | — |  | — |  | 7,440
Net income (loss) |  | 59,979 |  | 11,615 |  | 15,935 |  | 5,413 |  | (241) |  | — |  | 92,701
Nine Months Ended September 30, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating revenues from external customers |  | $303,090 |  | $98,568 |  | $466 |  | $— |  | $— |  | $— |  | $402,124
Interdepartmental revenues |  | 584 |  | 9,300 |  | 30,248 |  | — |  | — |  | (40,132) |  | —
Total operating revenues |  | 303,674 |  | 107,868 |  | 30,714 |  | — |  | — |  | (40,132) |  | 402,124
Equity in earnings of investments |  | — |  | — |  | — |  | 7,780 |  | — |  | — |  | 7,780
Net income (loss) |  | 46,439 |  | 9,216 |  | 15,536 |  | 5,659 |  | (228) |  | — |  | 76,622
(In thousands) |  |  |  |  |  | Nonregulated |  | Consolidation/ |  | Consolidated
MGE |  | Electric |  | Gas |  | Energy |  | Elimination |  | Total
Three Months Ended September 30, 2021 |  |  |  |  |  |  |  |  |  |
Operating revenues from external customers |  | $121,639 |  | $24,020 |  | $214 |  | $— |  | $145,873
Interdepartmental revenues |  | 89 |  | 6,689 |  | 10,224 |  | (17,002) |  | —
Total operating revenues |  | 121,728 |  | 30,709 |  | 10,438 |  | (17,002) |  | 145,873
Net income (loss) attributable to MGE |  | 27,833 |  | (218) |  | 5,386 |  | (5,627) |  | 27,374
Three Months Ended September 30, 2020 |  |  |  |  |  |  |  |  |  |
Operating revenues from external customers |  | $116,354 |  | $18,643 |  | $214 |  | $— |  | $135,211
Interdepartmental revenues |  | 209 |  | 3,494 |  | 10,102 |  | (13,805) |  | —
Total operating revenues |  | 116,563 |  | 22,137 |  | 10,316 |  | (13,805) |  | 135,211
Net income attributable to MGE |  | 24,761 |  | 221 |  | 5,251 |  | (5,493) |  | 24,740
Nine Months Ended September 30, 2021 |  |  |  |  |  |  |  |  |  |
Operating revenues from external customers |  | $324,110 |  | $119,944 |  | $464 |  | $— |  | $444,518
Interdepartmental revenues |  | 316 |  | 14,377 |  | 30,595 |  | (45,288) |  | —
Total operating revenues |  | 324,426 |  | 134,321 |  | 31,059 |  | (45,288) |  | 444,518
Net income attributable to MGE |  | 59,979 |  | 11,615 |  | 15,935 |  | (16,755) |  | 70,774
Nine Months Ended September 30, 2020 |  |  |  |  |  |  |  |  |  |
Operating revenues from external customers |  | $303,090 |  | $98,568 |  | $466 |  | $— |  | $402,124
Interdepartmental revenues |  | 584 |  | 9,300 |  | 30,248 |  | (40,132) |  | —
Total operating revenues |  | 303,674 |  | 107,868 |  | 30,714 |  | (40,132) |  | 402,124
Net income attributable to MGE |  | 46,439 |  | 9,216 |  | 15,536 |  | (16,754) |  | 54,437

X
- References No definition available. + Details
Name: | us-gaap_SegmentReportingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8924-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8981-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9031-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8844-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9054-108599 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8657-108599 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8721-108599 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -URI http://asc.fasb.org/topic&trid=2134510 + Details
Name: | us-gaap_SegmentReportingDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration