Short-term and Long-term Debt - Summary of Short-term and Long-term Debt (Detail) - USD ($)	Jan. 02, 2021	Apr. 27, 2020	Dec. 28, 2019
Schedule Of Debt Instruments [Line Items]
Long-term debt, gross	$ 1,450,600,000		$ 1,149,800,000
Less: notes payable and current maturities of long-term debt:
Current maturities of long-term debt	(250,000,000.0)		0
Current maturities of long-term debt	(268,500,000)		(202,900,000)
Long-term debt	1,182,100,000		946,900,000
Commercial paper borrowings
Less: notes payable and current maturities of long-term debt:
Commercial paper borrowings and other notes	0		(193,600,000)
Other notes*
Less: notes payable and current maturities of long-term debt:
Commercial paper borrowings and other notes	(18,500,000)		(9,300,000)
Other Debt
Schedule Of Debt Instruments [Line Items]
Long-term debt, gross	$ 600,000		199,800,000
6.125% unsecured notes due 2021
Schedule Of Debt Instruments [Line Items]
Unsecured notes, interest rate	6.125%
6.125% unsecured notes due 2021 | Unsecured Debt
Schedule Of Debt Instruments [Line Items]
Long-term debt, gross	$ 250,000,000.0		250,000,000.0
3.25% unsecured notes due 2027
Schedule Of Debt Instruments [Line Items]
Unsecured notes, interest rate	3.25%
3.25% unsecured notes due 2027 | Unsecured Debt
Schedule Of Debt Instruments [Line Items]
Long-term debt, gross	$ 300,000,000.0		300,000,000.0
4.10% unsecured notes due 2048
Schedule Of Debt Instruments [Line Items]
Unsecured notes, interest rate	4.10%
4.10% unsecured notes due 2048 | Unsecured Debt
Schedule Of Debt Instruments [Line Items]
Long-term debt, gross	$ 400,000,000.0		400,000,000.0
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]
Unsecured notes, interest rate		3.10%
Long-term debt, gross	$ 500,000,000.0		$ 0