Earnings Per Share And Shareholders' Equity (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Repurchase of shares			2,900,000
Repurchase of shares, average price per share			13.46
Purchase of treasury shares			38.7	24.9
Additional common shares authorized to repurchase			1,800,000
Stock Repurchase Program, Authorized Amount			200
Junior Subordinated Convertible Debentures [Member]
Antidilutive securities excluded from diluted EPS	0		0
Aggregate principal amount convertible debentures	125.0		125.0
Interest rate on unsecured senior notes	5.75%		5.75%
Maturity date			Sep. 15, 2029
Junior subordinated convertible debentures convertible conversion price	12.07		12.07
Junior subordinated convertible debentures convertible equity instruments in conversion			82.82
Debt Instrument, Convertible, Terms of Conversion Feature			1000
Stock Options [Member]
Antidilutive securities excluded from diluted EPS	3,900,000	5,800,000	3,900,000	5,800,000