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		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Numerator:
Net income attributable to common shareholders	$ 241,305	$ 182,982	$ 451,434	$ 377,960
Denominator:
Basic - weighted average common shares			133,499,744	136,108,930
Increase in weighted average common shares from dilutive effect of equity-based awards			2,096,963	1,679,289
Diluted - weighted average common shares, assuming exercise of equity-based awards			135,596,707	137,788,219
Basic earnings per share (in usd per share)	$ 1.81	$ 1.35	$ 3.38	$ 2.78
Diluted earnings per share (in usd per share)	$ 1.78	$ 1.33	$ 3.33	$ 2.74