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Business Segments (Tables)

6 Months Ended

Jun. 30, 2022

Segment Reporting [Abstract]

Business Segments [Table Text Block]

			Quarter Ended									Six Months Ended
			June 30,									June 30,
			2022			2021						2022			2021
Millions
Operating Revenue
Regulated Operations
Residential			$40.6			$35.4						$96.6			$81.0
Commercial			44.4			40.7						92.7			80.4
Municipal			10.0			11.5						22.1			24.1
Industrial			150.6			139.1						298.4			268.1
Other Power Suppliers			36.9			37.3						77.9			75.7
Other			26.2			26.4						50.0			54.1
Total Regulated Operations			308.7			290.4						637.7			583.4
ALLETE Clean Energy
Long-term PSA			18.9			18.7						44.3			36.8
Other			2.3			2.9						5.1			5.7
Total ALLETE Clean Energy			21.2			21.6						49.4			42.5
Corporate and Other
Long-term Contract			21.4			21.4						44.0			43.1
Sale of Renewable Development Projects			14.5			—						14.5			—
Other			7.3			2.2						11.0			5.8
Total Corporate and Other			43.2			23.6						69.5			48.9
Total Operating Revenue			$373.1			$335.6						$756.6			$674.8
Net Income Attributable to ALLETE
Regulated Operations			$29.6			$21.5						$81.1			$66.5
ALLETE Clean Energy			5.8			5.1						22.3			12.5
Corporate and Other (a)			2.2			1.3						0.5			0.7
Total Net Income Attributable to ALLETE			$37.6			$27.9						$103.9			$79.7

(a)Net Income in 2022 includes $4.0 million after-tax of purchase price accounting adjustments and $3.0 million after-tax of transaction costs related to the acquisition of New Energy.

			June 30, 2022			December 31, 2021
Millions
Assets
Regulated Operations			$4,370.9			$4,289.4
ALLETE Clean Energy			1,834.9			1,719.4
Corporate and Other			633.2			426.2
Total Assets			$6,839.0			$6,435.0

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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 https://asc.fasb.org/extlink&oid=126901519&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 https://asc.fasb.org/extlink&oid=126901519&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 https://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 https://asc.fasb.org/extlink&oid=126901519&loc=d3e8906-108599

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- References

No definition available.

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