Earnings Per Share Earnings Per Share - Reconciliation of Numerator and Denominator of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Numerator:
Net income attributable to common shareholders	$ 187,084	$ 285,345	$ 565,044	$ 832,686
Denominator:
Basic - weighted average common shares	134,809,610	138,794,789	135,675,823	144,342,288
Increase in weighted average common shares from dilutive effect of equity-based awards	1,743,159	2,395,014	1,636,025	2,284,985
Diluted - weighted average common shares, assuming exercise of equity-based awards	136,552,769	141,189,803	137,311,848	146,627,273
Basic earnings per share (in usd per share)	$ 1.39	$ 2.06	$ 4.16	$ 5.77
Diluted earnings per share (in usd per share)	$ 1.37	$ 2.02	$ 4.12	$ 5.68