Assets Held for Sale Assets Held for Sale - Additional Information (Detail) $ in Millions	6 Months Ended
Jun. 29, 2019 USD ($)
Assets held for sale
Movement in Property, Plant and Equipment [Roll Forward]
Assets sold	$ 6

Amount of divestiture of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

No definition available.

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