Earnings Per Share and Capital Structure Stock Repurchase Plan (Details) (USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended	2 Months Ended	3 Months Ended	12 Months Ended	0 Months Ended
	Mar. 31, 2014	Mar. 07, 2014	Mar. 31, 2014	Mar. 07, 2014	Mar. 09, 2013 March 8, 2013 Share Repurchase Program [Member]	Feb. 07, 2014 February 7, 2014 Share Repurchase Program [Member]
Stock Repurchase Program, Authorized Amount					$ 50	$ 50
Stock Repurchased and Retired During Period, Shares (in ones)	0	75,203		720,595
Stock Repurchased and Retired During Period, Value		2.9		29.9
Stock Repurchase Program, Remaining Authorized Repurchase Amount			$ 50.0