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Equity Investments (Tables) | 6 Months Ended
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Jun. 30, 2023
ATC [Member] |
Investment in ATC [Line Items] |
Equity Method Investments (Table Text Block) |
ALLETE’s Investment in ATC |
Millions |
Equity Investment Balance as of December 31, 2022 | $165.4 |
Cash Investments | 4.3 |
Equity in ATC Earnings | 11.6 |
Distributed ATC Earnings | (9.3) |
Amortization of the Remeasurement of Deferred Income Taxes | 0.7 |
Equity Investment Balance as of June 30, 2023 | $172.7 |
Nobles 2 [Member] |
Investment in ATC [Line Items] |
Equity Method Investments (Table Text Block) |
ALLETE’s Investment in Nobles 2 |
Millions |
Equity Investment Balance as of December 31, 2022 | $157.3 |
Equity in Nobles 2 Earnings (a) | (0.2) |
Distributed Nobles 2 Earnings | (2.3) |
Equity Investment Balance as of June 30, 2023 | $154.8 |
(a)The Company also recorded earnings from net loss attributable to non-controlling interest of $5.9 million related to its investment in Nobles 2.

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