Short-term and Long-term Debt - Short-term and Long-term Debt (Detail) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 30, 2017
Schedule Of Debt Instruments [Line Items]
Current unsecured notes	$ 0.0	$ 250.0
Other debt	141.5	186.8
Long-term debt including current maturities	1,091.5	1,186.8
Less: notes payable and current maturities of long-term debt:
Current maturities of long-term debt	0.0	(250.0)
Commercial paper borrowings	(132.0)	(151.0)
Other notes	(13.2)	(32.2)
Notes payable and current maturities of long-term debt	(145.2)	(433.2)
Long-term debt	946.3	753.6
4.25% unsecured notes due 2018
Schedule Of Debt Instruments [Line Items]
Current unsecured notes	0.0	250.0
Less: notes payable and current maturities of long-term debt:
Current maturities of long-term debt	0.0	(250.0)
6.70% unsecured notes due 2019
Schedule Of Debt Instruments [Line Items]
Noncurrent unsecured notes	0.0	200.0
6.125% unsecured notes due 2021
Schedule Of Debt Instruments [Line Items]
Noncurrent unsecured notes	250.0	250.0
3.25% unsecured notes due 2027
Schedule Of Debt Instruments [Line Items]
Noncurrent unsecured notes	300.0	300.0
4.10% unsecured notes due 2048
Schedule Of Debt Instruments [Line Items]
Noncurrent unsecured notes	$ 400.0	$ 0.0