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		9 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012	Mar. 31, 2011
Numerator:
Net income attributable to common shareholders	$ 312,074	$ 279,589	$ 849,858	$ 756,940
Denominator:
Basic - weighted average common shares	151,017,910	162,160,426	151,472,380	161,711,394
Increase in weighted average common shares from dilutive effect of equity-based awards	3,926,336	4,529,921	3,432,169	3,559,088
Diluted - weighted average common shares, assuming exercise of equity-based awards	154,944,246	166,690,347	154,904,549	165,270,482
Basic earnings per share	$ 2.07	$ 1.72	$ 5.61	$ 4.68
Diluted earnings per share	$ 2.01	$ 1.68	$ 5.49	$ 4.58