Equity Investments (Tables)

12 Months Ended

Dec. 31, 2019

Equity Method Investments and Joint Ventures [Abstract]

ALLETE's Investment in ATC [Table Text Block]

ALLETE’s Investment in ATC
Year Ended December 31	2019			2018
Millions
Equity Investment Beginning Balance		$128.1			$118.7
Cash Investments	6.6			6.2
Equity in ATC Earnings	21.7			17.5
Distributed ATC Earnings	(16.1		)	(15.2		)
Amortization of the Remeasurement of Deferred Income Taxes	1.3			0.9
Equity Investment Ending Balance		$141.6			$128.1

ATC Summarized Financial Data
Balance Sheet Data
As of December 31	2019		2018
Millions
Current Assets		$84.6		$87.2
Non-Current Assets	5,244.3		4,928.8
Total Assets		$5,328.9		$5,016.0
Current Liabilities		$502.6		$640.0
Long-Term Debt	2,312.8		2,014.0
Other Non-Current Liabilities	298.9		295.3
Members’ Equity	2,214.6		2,066.7
Total Liabilities and Members’ Equity		$5,328.9		$5,016.0

Income Statement Data
Year Ended December 31	2019		2018		2017
Millions
Revenue		$744.4		$690.5		$721.6
Operating Expense	373.5		358.7		344.9
Other Expense	110.5		108.3		104.1
Net Income		$260.4		$223.5		$272.6
ALLETE’s Equity in Net Income		$21.7		$17.5		$22.5