Other Current Liabilities (Tables)

12 Months Ended

Dec. 31, 2016

Other Current Liabilities [Abstract]

Other current liabilities

($ in millions)	2016		2015
Deferred income	$	13.2	$	14.4
Other accrued expenses	20.3		23.1
Dividends payable	9.5		8.6
Restructuring obligations	5.9		—
Other	9.4		7.7
Total other current liabilities	$	58.3	$	53.8