Stockholders' Equity Fiscal Year 2014 Share Repurchase Plan (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended	5 Months Ended	12 Months Ended
	Mar. 31, 2016	Oct. 31, 2014	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014	Jun. 02, 2014
PercentOfSharesReceivedUnderASR	80.00%			80.00%
Treasury Stock, Value, Acquired, Cost Method					$ 197.6
FiscalYear2014StockRepurchasePlan [Member] [Member]
Stock Repurchase Program, Authorized Amount						$ 150.0
Accelerated Share Repurchases, Initial Price Paid Per Share		$ 57.03		$ 52.52
Treasury Stock, Value, Acquired, Cost Method				$ 150.0
Treasury Stock, Shares, Acquired		2.6	0.3	2.3