Earnings Per Share And Shareholders' Equity (Narrative) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended			9 Months Ended		3 Months Ended					12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Stock Options [Member]	Sep. 30, 2012 Stock Options [Member]	Sep. 30, 2013 Restricted Stock Units (RSUs) [Member] 2013 Performance grants [Domain]	Sep. 30, 2013 Restricted Stock Units (RSUs) [Member] 2012 Performance Grants [Member]	Sep. 30, 2013 5.75% Junior Subordinated Convertible Debentures [Member]	Dec. 31, 2009 5.75% Junior Subordinated Convertible Debentures [Member]
Antidilutive securities excluded from diluted EPS						0.7	1.4	0.3	0.3
Aggregate principal amount convertible debentures										$ 125.0
Interest rate on unsecured senior notes										5.75%
Junior subordinated convertible debentures convertible conversion price										$ 11.84	$ 12.07
Maturity date										Sep. 15, 2029
Junior subordinated convertible debentures convertible equity instruments in conversion										84.46	82.82
Debt Instrument, Convertible, Terms of Conversion Feature										1000	1000
Incremental Common Shares Attributable to Conversion of Debt Securities		4.0	2.4	4.0	0
Stock Repurchased During Period, Shares	0.9	2.1		5.8
Repurchase of shares, average price per share	$ 0	$ 18.76		$ 17.36
Stock repurchased but not settled in cash		3.5
Stock Repurchased During Period, Value	17.7	39.4		100.0
Remaining Authorized Repurchase Amount		$ 152.3
Common Stock, Dividends, Per Share, Declared	$ 0.06	$ 0.06	$ 0.05	$ 0.18	$ 0.10