Financial Instruments and Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2016

Fair Value Disclosures [Abstract]

Fair Value, by Balance Sheet Grouping [Table Text Block]

The carrying and fair values of these financial instruments are as follows:

	June 30, 2016				December 31, 2015
(dollars in millions)	Carrying Value		Fair Value		Carrying Value		Fair Value
Investment in CyrusOne	$	27.4	$	209.4	$	55.5	$	257.9
Long-term debt, including current portion*	1,074.2		1,081.5		1,178.0		1,155.6
*Excludes capital leases and note issuance costs.