Accounting Policies (Narrative III) (Detail) - USD ($) $ in Millions	3 Months Ended
Sep. 30, 2015	Sep. 30, 2014
Accounting Policies [Abstract]
Allowance for Doubtful Accounts Receivable, Period Increase (Decrease)	$ 2.8	$ 1.8

Amount of increase (decrease) in the allowance for doubtful accounts.

No definition available.

Name:	us-gaap_AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration