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, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Numerator:
Net income attributable to common shareholders	$ 182,982	$ 267,252	$ 377,960	$ 547,341
Denominator:
Basic - weighted average common shares	135,373,356	145,493,247	136,108,930	147,116,038
Increase in weighted average common shares from dilutive effect of equity-based awards	1,692,091	2,689,530	1,679,289	2,347,242
Diluted - weighted average common shares, assuming exercise of equity-based awards	137,065,447	148,182,777	137,788,219	149,463,280
Basic earnings per share (in usd per share)	$ 1.35	$ 1.84	$ 2.78	$ 3.72
Diluted earnings per share (in usd per share)	$ 1.33	$ 1.80	$ 2.74	$ 3.66