Earnings Per Share And Shareholders' Equity (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended	3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended
	Sep. 30, 2012	Jun. 30, 2012	Jun. 30, 2012	Jun. 30, 2012 Stock Options [Member]	Jun. 30, 2011 Stock Options [Member]	Jun. 30, 2012 Stock Options [Member]	Jun. 30, 2011 Stock Options [Member]	Jun. 30, 2012 Restricted Stock Units (RSUs) [Member]	Jun. 30, 2012 Restricted Stock Units (RSUs) [Member]	Jun. 30, 2012 Convertible Debt Securities [Member]	Jun. 30, 2012 Convertible Debt Securities [Member]	Jun. 30, 2012 5.75% Junior Subordinated Convertible Debentures [Member]
Antidilutive securities excluded from diluted EPS				1,900,000	3,900,000	1,900,000	3,900,000	1,700,000	1,800,000	1,900,000	1,900,000
Aggregate principal amount convertible debentures												$ 125,000,000
Interest rate on unsecured senior notes												5.75%
Maturity date												Sep. 15, 2029
Junior subordinated convertible debentures convertible conversion price												$ 12.07
Junior subordinated convertible debentures convertible equity instruments in conversion												82.82
Debt Instrument, Convertible, Terms of Conversion Feature												1000
Stock Repurchased During Period, Shares	400,000	4,800,000	4,900,000
Repurchase of shares, average price per share	$ 14.47	$ 13,920,000	$ 13,910,000
Stock repurchased but not settled in cash			4,000,000
Stock Repurchased During Period, Value	5,300,000	67,700,000	68,600,000
Stock Repurchase Program, Authorized Amount	250,000,000
Remaining Authorized Repurchase Amount			94,100,000
Dividends, Common Stock, Cash	$ 0	$ 0.05