Other Expense (Tables)

3 Months Ended

Mar. 31, 2014

Other Income and Expenses [Abstract]

Schedule of Other Expense

Other expense consists of:

	Three Months Ended March 31,
($ in millions)	2014			2013
Development income	$	(0.4	)	$	(0.3	)
Acquisition-related contingencies	0.4			—
Foreign exchange and other	0.7			0.5
	$	0.7		$	0.2