Debt (Tables)

12 Months Ended

Dec. 31, 2015

Debt Disclosure [Abstract]

Schedule of Maturities of Long-term Debt [Table Text Block]

The scheduled maturities of the Company's long-term debt obligations for the next five years as of December 31, 2015, are as follows:

Year	Dollars (in millions)
2016	329.5
2017	20.0
2018	4.8
2019	402.0
2020	—

Schedule of Long-term Debt Instruments [Table Text Block]

Debt consisted of the following at December 31,

(dollars in millions)	2015			2014
Commercial paper payable through 2015	$	329.5		$	317.3
6.8% notes payable in 2019	400.0			400.0
4.5% notes payable in 2021	400.0			400.0
Notes payable in 2022	200.0			200.0
Other debt, including debt from subsidiaries	30.5			—
Interest rate swap of 2021 notes (See Note 8)	5.2			1.0
Unamortized discounts and debt issuance costs	(5.5		)	(6.7		)
Total debt	1,359.7			1,311.6
Less current portion	5.8			—
Total long-term debt	$	1,353.9		$	1,311.6