Short-term and Long-term Debt - Narratve (Detail) - USD ($)		12 Months Ended
	Apr. 27, 2020	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018	Sep. 16, 2019
Schedule Of Debt Instruments [Line Items]
Long-term debt and notes payable maturity, 2021		$ 268,500,000
Long-term debt and notes payable maturity, 2022		0
Long-term debt and notes payable maturity, 2023		0
Long-term debt and notes payable maturity, 2024		0
Long-term debt and notes payable maturity, 2025		0
Proceeds from sale of unsecured long-term notes		489,900,000	$ 0	$ 395,400,000
Notes Payable and Commercial Paper Borrowings
Schedule Of Debt Instruments [Line Items]
Average notes payable and commercial paper borrowings outstanding		$ 68,400,000	$ 175,000,000.0
Weighted-average interest rate		2.98%	2.87%
Commercial paper borrowings
Schedule Of Debt Instruments [Line Items]
Average notes payable and commercial paper borrowings outstanding		$ 41,000,000.0	$ 162,200,000
Weighted-average interest rate		1.53%	2.27%
Commercial paper outstanding balance		$ 0	$ 193,600,000
Notes Payable
Schedule Of Debt Instruments [Line Items]
Weighted-average interest rate		8.87%	2.23%
Revolving Credit Facility
Schedule Of Debt Instruments [Line Items]
Average notes payable and commercial paper borrowings outstanding		$ 13,900,000
Weighted-average interest rate		1.70%
Short-term credit facility outstanding balance		$ 0
Proceeds from Lines of Credit			$ 0
3.10% unsecured notes due 2050
Schedule Of Debt Instruments [Line Items]
Unsecured notes, interest rate		3.10%
3.10% unsecured notes due 2050 | Unsecured Debt
Schedule Of Debt Instruments [Line Items]
Debt instrument, face amount	$ 500,000,000
Unsecured notes, interest rate	3.10%
Proceeds from sale of unsecured long-term notes	$ 489,900,000
Transaction costs	$ 4,400,000
Five-year Multi-Currency Revolving Credit Facility
Schedule Of Debt Instruments [Line Items]
Revolving credit facility, amount available					$ 800,000,000
Revolving credit facility, outstanding amount		$ 0
Actual debt-to-capital ratio		0.12
Actual debt-to-income ratio		0.57
Five-year Multi-Currency Revolving Credit Facility | Maximum
Schedule Of Debt Instruments [Line Items]
Maximum limit of required debt-to-capital ratio		0.60
Maximum limit of required debt-to-income ratio		3.50
Five-year Multi-Currency Revolving Credit Facility | Maximum | Material Acquisition
Schedule Of Debt Instruments [Line Items]
Maximum limit of required debt-to-capital ratio		0.65
Maximum limit of required debt-to-income ratio		4.00