Short-Term and Long-Term Debt Short-Term and Long-Term Debt (Tables)

9 Months Ended

Sep. 30, 2016

Debt Disclosure [Abstract]

Schedule of Short-Term and Long-Term Debt [Table Text Block]

The following tables present ALLETE’s short-term and long-term debt as of September 30, 2016 and December 31, 2015.

September 30, 2016	Principal		Unamortized Debt Issuance Costs	Total
Millions
Short-Term Debt (a)		$187.2	$(0.6)		$186.6
Long-Term Debt	1,369.7		(10.8)	1,358.9
Total Debt		$1,556.9	$(11.4)		$1,545.5

(a) Consisted of long-term debt due within one year.

December 31, 2015	Principal		Unamortized Debt Issuance Costs	Total
Millions
Short-Term Debt (a)		$37.9	$(0.6)		$37.3
Long-Term Debt	1,568.7		(12.0)	1,556.7
Total Debt		$1,606.6	$(12.6)		$1,594.0

(a) Consisted of long-term debt due within one year and notes payable.