Nominal or face amount used to calculate payments on the derivative asset.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5579245-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5580258-113959

Name:	us-gaap_DerivativeAssetNotionalAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

Financial Instruments Measured at Fair Value on Recurring Basis (Parenthetical) (Detail) $ in Millions, $ in Millions	Mar. 30, 2018 USD ($)	Mar. 30, 2018 CAD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2017 CAD ($)
Foreign currency forward contracts \| Fair Value, Measurements, Recurring
Fair Value Measurements at Reporting Date Using
Derivative assets, notional amount	$ 14.0	$ 0.1	$ 1.0	$ 0.6