Short-term and Long-term Debt - Summary of Short-term and Long-term Debt (Detail) - USD ($) $ in Millions	Dec. 28, 2019	Dec. 29, 2018	Feb. 20, 2018
Schedule Of Debt Instruments [Line Items]
Other debt	$ 199.8	$ 182.3
Long-term debt including current maturities	1,149.8	1,132.3
Less: notes payable and current maturities of long-term debt:
Commercial paper borrowings	(193.6)	(177.1)
Other notes	(9.3)	(9.2)
Notes payable and current maturities of long-term debt	(202.9)	(186.3)
Total long-term debt	$ 946.9	946.0
6.125% unsecured notes due 2021
Schedule Of Debt Instruments [Line Items]
Unsecured notes, interest rate	6.125%
Unsecured notes. noncurrent	$ 250.0	250.0
3.25% unsecured notes due 2027
Schedule Of Debt Instruments [Line Items]
Unsecured notes, interest rate	3.25%
Unsecured notes. noncurrent	$ 300.0	300.0
4.10% unsecured notes due 2048
Schedule Of Debt Instruments [Line Items]
Unsecured notes, interest rate	4.10%		4.10%
Unsecured notes. noncurrent	$ 400.0	$ 400.0