Consolidated Statements Of Shareholders' Equity (Parenthetical) (USD $)	12 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2009
Comprehensive income:
Cumulative loss on interest rate swaps, tax benefit	$ 12,500,000	$ 21,400,000
Cumulative foreign currency translation gain/(loss)	300,000	(900,000)
Tax expense on reclassification into earnings on interest rate swaps	13,994,000	14,005,000	8,477,000
Tax benefit on periodic revaluation of interest rate swaps	$ 8,771,000	$ 6,430,000	$ 14,186,000
Common stock and Treasury stock
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	600,000,000	600,000,000
Treasury stock, Beginning Balance	123,000
Common stock outstanding, Beginning Balance	142,852,418	119,770,277	119,769,082
Repurchased, Common Stock	(13,210,972)	(123,000)
Repurchased for treasury	13,210,972	123,000
Public offering		23,000,000
Issued for stock-based compensation plans	170,303	205,141	1,195
Common stock outstanding, Ending Balance	129,811,749	142,852,418	119,770,277
Treasury stock, Ending Balance	13,333,972	123,000