Reconciliation of Numerator and Denominator of Basic and Diluted Earnings Per Share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010
Numerator:
Net income attributable to common shareholders	$ 240,766	$ 230,180	$ 537,784	$ 477,351
Denominator:
Basic - weighted average common shares	150,960,202	161,701,219	151,699,614	161,486,878
Increase in weighted average from dilutive effect of equity-based awards	3,757,009	4,400,316	3,324,865	3,303,911
Diluted - weighted average common shares, assuming exercise of equity-based awards	154,717,211	166,101,535	155,024,479	164,790,789
Basic earnings per share	$ 1.59	$ 1.42	$ 3.55	$ 2.96
Diluted earnings per share	$ 1.56	$ 1.39	$ 3.47	$ 2.90