Equity and Earnings Per Share (Computation Of Basic And Diluted Earnings Per Common Share) (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended			12 Months Ended	1 Months Ended	3 Months Ended	12 Months Ended	13 Months Ended	1 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	13 Months Ended	12 Months Ended
	Jun. 30, 2013	Aug. 16, 2013	Jun. 30, 2012	Jun. 30, 2013 2012 Stock Repurchase Plan [Member]	Mar. 31, 2013 March 2013 Accelerated Share Repurchase [Member]	Sep. 30, 2013 March 2013 Accelerated Share Repurchase [Member]	Jun. 30, 2013 March 2013 Accelerated Share Repurchase [Member]	Jul. 31, 2013 March 2013 Accelerated Share Repurchase [Member]	Sep. 30, 2012 September 2012 Accelerated Share Repurchase [Member]	Mar. 31, 2013 September 2012 Accelerated Share Repurchase [Member]	Jun. 30, 2013 September 2012 Accelerated Share Repurchase [Member]	Sep. 30, 2013 Open Market Repurchases [Member]	Jun. 30, 2013 Open Market Repurchases [Member]	Jul. 31, 2013 Open Market Repurchases [Member]	Jun. 30, 2013 March Open Market Repurchases [Member]
Class of Stock [Line Items]
Stock Repurchase Program Authorized Amount				$ 200
Treasury Stock, Value, Acquired, Cost Method	197.6						50.0				50.0		97.6	100.0	50.0
Treasury Stock, Shares, Acquired					1,044,932	101,247		1,146,179	1,328,462	234,898	1,563,360	51,071	2,697,675	2,748,746
Entity Common Stock, Shares Outstanding		56,217,133
Preferred Stock, Shares Authorized	5,000,000		5,000,000
Preferred Stock, Par or Stated Value Per Share	$ 0.01		$ 0.01
Preferred Stock, Shares Outstanding	0		0
Common Stock, Shares Authorized	150,000,000		75,000,000
Common Stock, Par or Stated Value Per Share	$ 0.01		$ 0.01
Common Stock, Shares, Outstanding	56,310,582		60,147,007
Percent of advance payment under accelerated share repurchase agreement							80.00%
Treasury Stock, Value, Acquired, Average Cost Per Share							$ 38.28	$ 43.62			$ 31.98		$ 36.17	$ 36.38
Stock Repurchase Program, Remaining Authorized Repurchase Amount				$ 2.4