Commitments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Commitments [Abstract]
Operating Leases, Rent Expense	$ 105.1	$ 106.1	$ 114.0
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Operating Leases, Future Minimum Payments Due, Current	97.2
Operating Leases, Future Minimum Payments, Due in Two Years	75.9
Operating Leases, Future Minimum Payments, Due in Three Years	57.6
Operating Leases, Future Minimum Payments, Due in Four Years	40.1
Operating Leases, Future Minimum Payments, Due in Five Years	27.5
Operating Leases, Future Minimum Payments, Due Thereafter	42.1
Operating Leases, Future Minimum Payments Due	$ 340.4