Employee Benefit Plans (Tables) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Other Pension Plan [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	$ 0.3	$ 0.4
Interest cost	0.1	0.1
Pension cost	0.4	0.5
Pension Plan [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	1.7	1.9
Interest cost	2.2	2.7
Expected return on plan assets	(2.5)	(2.6)
Defined Benefit Plan, Amortization of Gains (Losses)	1.7	2.7
Pension cost	$ 3.1	$ 4.7