Restructuring Activities - Additional Information (Detail)						3 Months Ended		6 Months Ended
	Jul. 02, 2018 Segment	Sep. 25, 2017 Employee	Sep. 07, 2017	Jul. 17, 2017	May 03, 2017 BusinessUnit	Jul. 13, 2019 USD ($)	Jul. 14, 2018 USD ($)	Jul. 13, 2019 USD ($)	Jul. 14, 2018 USD ($)
Restructuring Cost And Reserve [Line Items]
Number of new organizational structure business units established | BusinessUnit					2
Develop Leading Capabilities
Restructuring Cost And Reserve [Line Items]
Number of operating segments | Segment	1
Launch of Project Centennial
Restructuring Cost And Reserve [Line Items]
Restructuring activities, expected completion year								2021
Launch of Project Centennial | Reduce Costs to Fuel Growth
Restructuring Cost And Reserve [Line Items]
Non-restructuring consulting costs							$ 2,200,000		$ 8,600,000
Consulting costs						$ 0		$ 0
Launch of Project Centennial | Develop Leading Capabilities
Restructuring Cost And Reserve [Line Items]
Number of new organizational structure business units established | BusinessUnit					2
Launch of Project Centennial | Employee Severance | Voluntary Employee Separation Incentive Plan
Restructuring Cost And Reserve [Line Items]
Voluntary employee separation incentive plan commencement date				Jul. 17, 2017
Election period closing date		Sep. 25, 2017
Approximate number of employees accepted offer | Employee		325
Separations beginning date			Sep. 07, 2017
Launch of Project Centennial | Employee Severance | Voluntary Employee Separation Incentive Plan | Restructuring Charges
Restructuring Cost And Reserve [Line Items]
Credit included in aggregate employee separation charge									$ 600,000