Share Repurchase Program (Details) - USD ($)	1 Months Ended	12 Months Ended
	Oct. 31, 2014	Jun. 30, 2015
Equity [Abstract]
Share repurchase program, authorized amount	$ 500,000,000
Stock repurchase program term	2 years
Shares purchased (in shares)		2,995,272
Purchase of treasury stock		$ 124,500,000