Summary Of Significant Accounting Policies Summary of Significant Accounting Policies (Stock Repurchase Program) (Details) (USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended			3 Months Ended		4 Months Ended
	Sep. 30, 2014	Aug. 31, 2014	Jul. 31, 2014	Sep. 30, 2014	Jun. 13, 2014	Oct. 31, 2014 Subsequent Event [Member]
Schedule of Common Stock Repurchases [Line Items]
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	2,076,000	2,781,000	3,708,000	2,076,000
Stock Repurchased Total Cost						$ 79.9
Stock Repurchased During Period, Shares	705,000	927,000	292,000	1,924,000		2,529,615
Stock Repurchased, Average Cost per Share	$ 31.67	$ 31.50	$ 32.30	$ 31.68		$ 31.57
Stock Repurchase Program, Number of Shares Authorized to be Repurchased					4,000,000