Equity (Details) - USD ($) shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2001
Share Repurchases [Abstract]
Number of Shares Authorized to be Repurchased	3,296		3,296		15,400
Treasury Stock, Shares, Acquired	0	1,773	922
Dividends, Common Stock, Cash	$ 1.7	$ 1.7	$ 5.0	$ 5.2