Equity (Details) - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Sep. 30, 2001
Share Repurchases [Abstract]
Stock Repurchase Shares Authorized					15,400
Number of Shares Authorized to be Repurchased	3,296		3,296
Treasury Stock, Shares, Acquired	0	0	922
Dividends, Common Stock, Cash	$ 1.7	$ 1.8	$ 3.3	$ 3.5