Stock And Employee Benefit Plans (Schedule Of Information Related To Stock Option Activity) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]
Weighted-average fair value of options granted per share	$ 20.12	$ 22.18	$ 20.16
Intrinsic value of options exercised	$ 30.3	$ 20.9	$ 33.8

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration