Stockholders' Equity Fiscal Year 2017 ASR (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended		5 Months Ended	9 Months Ended
	Mar. 20, 2017	Jun. 30, 2017	Mar. 31, 2017	Mar. 31, 2017	Mar. 31, 2017	Mar. 31, 2016	Oct. 26, 2016
Class of Stock [Line Items]
Forward Contract Indexed to Issuer's Equity, Classification		40	40
Unrealized Gain (Loss) on Derivatives and Commodity Contracts					$ 20.7
FY2017StockRepurchasePlan [Member] [Domain] [Domain]
Class of Stock [Line Items]
Stock Repurchase Program, Authorized Amount							$ 200.0
Accelerated Share Repurchases, Initial Price Paid Per Share					$ 57.51
Accelerated Share Repurchase Program, Adjustment			$ 19.3
Treasury Stock, Shares, Acquired	0.3			3.1		2.8
Accelerated Share Repurchases, Final Price Paid Per Share			$ 64.04