Income Taxes (Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Balance	$ 6.9	$ 7.1
Additions for tax positions taken in the current year	0.6	0.6
Reduction for expiration of statute of limitations/audits	(1.6)	(0.8)
Balance	$ 5.9	$ 6.9