Financial Instruments and Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2015

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:

	September 30, 2015				December 31, 2014
(dollars in millions)	Carrying Value		Fair Value		Carrying Value		Fair Value
Investment in CyrusOne	$	68.8	$	269.0	$	273.6	$	785.0
Long-term debt, including current portion*	1,181.1		1,173.3		1,686.1		1,717.4
*Excludes capital leases.