Equity and Earnings Per Share (Computation Of Basic And Diluted Earnings Per Common Share) (Details) (USD $)	3 Months Ended		9 Months Ended				9 Months Ended	1 Months Ended		3 Months Ended	9 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012	Apr. 30, 2013	Jun. 30, 2012	Mar. 31, 2013 2012 Stock Repurchase Plan [Member]	Mar. 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]	Mar. 31, 2013 Open Market Repurchases [Member]
Class of Stock [Line Items]
Stock Repurchase Program Authorized Amount							$ 200,000,000
Treasury Stock, Value, Acquired, Cost Method								50,000,000	50,000,000
Treasury Stock, Shares, Acquired								1,044,932	1,328,462	234,898	1,645,604
Entity Common Stock, Shares Outstanding					56,849,330
Preferred Stock, Shares Authorized	5,000,000		5,000,000			5,000,000
Preferred Stock, Par or Stated Value Per Share	$ 0.01		$ 0.01			$ 0.01
Preferred Stock, Shares Outstanding	0		0			0
Common Stock, Shares Authorized	150,000,000		150,000,000			75,000,000
Common Stock, Par or Stated Value Per Share	$ 0.01		$ 0.01			$ 0.01
Common Stock, Shares, Outstanding	57,078,056		57,078,056			60,147,007
Percent of advance payment under accelerated share repurchase agreement								80.00%
Treasury Stock, Value, Acquired, Average Cost Per Share								$ 38.28			$ 31.16
Stock Repurchase Program, Remaining Authorized Repurchase Amount							48,700,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized		5,000,000		5,000,000		2,000,000
Net income attributable to common stock	$ 29,524,000	$ 22,869,000	$ 65,931,000	$ 45,370,000
Weighted average number of shares outstanding, used in computing basic earnings per share	58,024,000	59,652,000	58,942,000	59,319,000
Dilutive common stock equivalents	1,050,000	842,000	1,063,000	953,000
Weighted average number of shares outstanding used in computing diluted earnings per share	59,074,000	60,494,000	60,005,000	60,272,000
Basic earnings per share	$ 0.51	$ 0.38	$ 1.12	$ 0.76
Diluted earnings per share	$ 0.50	$ 0.38	$ 1.10	$ 0.75
Anti-dilutive options (excluded from the calculation of diluted earnings per share)	717,000	1,869,000	396,000	2,209,000