Earnings Per Share (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended			0 Months Ended	9 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012	Mar. 31, 2011	Jun. 30, 2011	Aug. 29, 2011 Bank Of America N.A. [Member]	Mar. 31, 2012 Bank Of America N.A. [Member]
Earnings Per Share [Line Items]
Anti-dilutive effect shares	600,000	1,700,000	700,000	2,000,000
Warrant's exercise price	$ 68.31	$ 68.31	$ 68.31	$ 68.31
Date of accelerated repurchase agreement			August 29, 2011
Amount paid for common stock under accelerated repurchase agreement						$ 209,700,000
Amount paid for common stock under accelerated repurchase agreement (in shares)	176,000		58,000			4,000,000
Payment amount allocated to treasury stock for accelerated share repurchase agreement	$ 346,140,000		$ 346,140,000		$ 136,631,000		$ 209,700,000
Shares to be issued under the agreement							200,000