Short-Term and Long-Term Debt (Tables)

9 Months Ended

Sep. 30, 2017

Debt Disclosure [Abstract]

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

The following tables present the Company’s short-term and long-term debt as of September 30, 2017, and December 31, 2016:

September 30, 2017	Principal		Unamortized Debt Issuance Costs	Total
Millions
Short-Term Debt		$64.6	$(0.5)		$64.1
Long-Term Debt	1,454.4		(9.8)	1,444.6
Total Debt		$1,519.0	$(10.3)		$1,508.7

December 31, 2016	Principal		Unamortized Debt Issuance Costs	Total
Millions
Short-Term Debt		$188.3	$(0.6)		$187.7
Long-Term Debt	1,380.8		(10.4)	1,370.4
Total Debt		$1,569.1	$(11.0)		$1,558.1