Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases

At December 31, 2015, future minimum rental payments under non-cancelable operating leases were:

Year	($ in millions)
2016	$	9.6
2017	7.3
2018	5.8
2019	4.1
2020	3.5
Thereafter	27.9
Total	$	58.2