Stockholders' Equity Dividends Paid (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Stockholders' Equity Attributable to Parent [Abstract]
Dividends, Common Stock, Cash	$ 1.8	$ 1.7	$ 3.5	$ 3.4