Basis of Presentation (Detail) $ in Millions	12 Months Ended
Aug. 25, 2018 USD ($)
Computer Software, Intangible Asset [Member]
Prior Period Reclassification Adjustment	$ 11.6

The amount of a reclassification adjustment made to prior period financial statement amounts.

No definition available.

Name:	us-gaap_PriorPeriodReclassificationAdjustment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration