Earnings Per Share (Narrative) (Details) (USD $)	1 Months Ended	12 Months Ended							0 Months Ended	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010	Jul. 31, 2012	Mar. 31, 2012	Mar. 31, 2011	Jun. 30, 2012 Warrants [Member]	Aug. 29, 2011 Bank Of America [Member]	Jun. 30, 2012 Subsequent Event [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted-average common stock equivalents excluded from diluted per share computations		700,000	1,900,000	2,400,000
Notes conversion price			$ 54.65			$ 54.65	$ 54.65
Warrants exercise price								$ 68.31
Common stock to repurchase initial, value									$ 209,700,000
Common stock authorization to repurchase, shares	4,000,000	4,000,000							4,000,000
Average price per share									$ 56.51
Number of repurchase plans	2
Common stock repurchased during the period, shares	2,000,000	6,000,000								200,000
Common stock repurchased during the period		328,890,000	53,647,000	3,496,000						12,300,000
Common stock repurchased, average price per share	$ 51.43
Common stock remaining number of shares to be repurchased, shares					2,000,000
Common stock authorization to repurchase remaining, value									16,300,000
Common stock authorization to repurchase, value									$ 226,000,000