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Short-term and Long-term Debt - Summary of Debt (Detail) - USD ($)
$ in Millions
Jun. 30, 2018
Dec. 30, 2017
Schedule Of Debt Instruments [Line Items]    
Current unsecured notes $ 0.0 $ 250.0
Other debt 123.0 186.8
Long-term debt including current maturities 1,073.0 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 (115.5) (151.0)
Other notes (12.1) (32.2)
Notes payable and current maturities of long-term debt (127.6) (433.2)
Long-term debt 945.4 753.6
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