Commitments and Contingencies (Environmental Accruals) (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Accrued expenses	$ 1.3	$ 1.7
Other liabilities	4.0	4.5
Total environmental accruals	$ 5.3	$ 6.2