Income Taxes (Unrecognized Tax Benefits) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Balance	$ 6.8	$ 6.3
Additions for tax positions taken in the current year	1.7	0.7
Reduction for expiration of statute of limitations/audits	(1.4)	(0.2)
Balance	$ 7.1	$ 6.8