Quarterly Results (Parenthetical) (Detail) - USD ($) $ in Millions	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019
Dogfish Head Transaction [Member]
Quarterly Financial Information [Line Items]
Business combination non-reoccurring transaction fees	$ 2.1	$ 5.9	$ 1.9

Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

No definition available.

Name:	us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant